2022/02/26 更新

写真a

イシノ ヒロカズ
石野 宏和
ISHINO Hirokazu
所属
自然科学学域 教授
職名
教授
外部リンク

学位

  • 博士(理学) ( 東京大学 )

研究分野

  • 自然科学一般 / 素粒子、原子核、宇宙線、宇宙物理にする実験

学歴

  • 東京大学    

    1994年4月 - 1999年3月

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    国名: 日本国

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  • 東京工業大学   School of Science   Dept. of Physics

    1990年4月 - 1994年3月

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    国名: 日本国

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経歴

  • 岡山大学   学術研究院 自然科学学域   教授

    2021年4月 - 現在

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    国名:日本国

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  • 岡山大学   自然科学研究科   教授

    2017年1月 - 2021年3月

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  • - Professor,Graduate School of Natural Science and Technology,Okayama University

    2017年

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  • 岡山大学   自然科学研究科   准教授

    2008年4月 - 2016年12月

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  • Associate Professor,Graduate School of Natural Science and Technology,Okayama University

    2008年 - 2016年

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  • 東京工業大学   大学院理工学研究科   助教

    2007年4月 - 2008年3月

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  • 東京工業大学   大学院理工学研究科   助手

    2000年4月 - 2007年3月

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  • 日本学術振興会   特別研究員PD

    1999年4月 - 2000年3月

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  • 日本学術振興会   特別研究員DC2

    1997年4月 - 1999年3月

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▼全件表示

所属学協会

委員歴

  • 高エネルギー委員会将来計画委員  

    2015年9月 - 2017年8月   

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    団体区分:その他

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  • 日本学術振興会特別研究員等審査会専門委員(書面担当)及び国際事業委員会書面審査委員  

    2013年8月 - 2015年7月   

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    団体区分:政府

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  • 内閣府科学・技術関係予算に係る優先度判定の調査・検討会(個別施策ヒアリング)外部専門委員  

    2010年   

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    団体区分:政府

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論文

  • Search for tens of MeV neutrinos associated with gamma-ray bursts in Super-Kamiokande 査読

    A Orii, K Abe, C Bronner, Y Hayato, M Ikeda, S Imaizumi, H Ito, J Kameda, Y Kataoka, Y Kato, Y Kishimoto, M Miura, S Moriyama, T Mochizuki, Y Nagao, M Nakahata, Y Nakajima, S Nakayama, T Okada, K Okamoto, G Pronost, H Sekiya, M Shiozawa, Y Sonoda, Y Suzuki, A Takeda, Y Takemoto, A Takenaka, H Tanaka, T Yano, S Han, T Kajita, K Okumura, T Tashiro, R Wang, J Xia, G D Megias, D Bravo-Berguño, L Labarga, Ll Marti, B Zaldivar, F, d M Blaszczyk, E Kearns, J L Raaf, J L Stone, L Wan, T Wester, B W Pointon, J Bian, N J Griskevich, W R Kropp, S Locke, S Mine, M B Smy, H W Sobel, V Takhistov, P Weatherly, K S Ganezer, J Hill, J Y Kim, I T Lim, R G Park, B Bodur, K Scholberg, C W Walter, L Bernard, A Coffani, O Drapier, S El Hedri, A Giampaolo, M Gonin, Th A Mueller, P Paganini, B Quilain, T Ishizuka, T Nakamura, J S Jang, J G Learned, S Matsuno, L H V Anthony, R P Litchfield, A A Sztuc, Y Uchida, V Berardi, M G Catanesi, E Radicioni, N F Calabria, L N Machado, G De Rosa, G Collazuol, F Iacob, M Lamoureux, N Ospina, L Ludovici, Y Nishimura, S Cao, M Friend, T Hasegawa, T Ishida, T Kobayashi, M Jakkapu, T Matsubara, T Nakadaira, K Nakamura, Y Oyama, K Sakashita, T Sekiguchi, T Tsukamoto, T Boschi, F Di Lodovico, S Molina Sedgwick, M Taani, S Zsoldos, M Hasegawa, Y Isobe, H Miyabe, Y Nakano, T Shiozawa, T Sugimoto, A T Suzuki, Y Takeuchi, S Yamamoto, A Ali, Y Ashida, J Feng, S Hirota, M Jiang, A K Ichikawa, T Kikawa, M Mori, K E Nakamura, T Nakaya, R A Wendell, K Yasutome, P Fernandez, N McCauley, P Mehta, A Pritchard, K M Tsui, Y Fukuda, Y Itow, H Menjo, T Niwa, K Sato, M Tsukada, P Mijakowski, K Frankiewicz, C K Jung, C Vilela, M J Wilking, C Yanagisawa, D Fukuda, M Harada, K Hagiwara, T Horai, H Ishino, S Ito, Y Koshio, W Ma, N Piplani, S Sakai, M Sakuda, Y Takahira, C Xu, Y Kuno, G Barr, D Barrow, L Cook, A Goldsack, S Samani, C Simpson, D Wark, F Nova, J Y Yang, S J Jenkins, M Malek, J M McElwee, O Stone, M D Thiesse, L F Thompson, H Okazawa, Y Choi, S B Kim, I Yu, K Nishijima, M Koshiba, K Iwamoto, N Ogawa, M Yokoyama, K Martens, M R Vagins, S Izumiyama, M Kuze, M Tanaka, T Yoshida, M Inomoto, M Ishitsuka, R Matsumoto, K Ohta, M Shinoki, J F Martin, C M Nantais, H A Tanaka, T Towstego, R Akutsu, M Hartz, A Konaka, P de Perio, N W Prouse, S Chen, B D Xu, M Posiadala-Zezula, B Richards, B Jamieson, J Walker, A Minamino, K Okamoto, G Pintaudi, R Sasaki

    Progress of Theoretical and Experimental Physics   2021 ( 10 )   1 - 19   2021年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1093/ptep/ptab081

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    その他リンク: http://academic.oup.com/ptep/article-pdf/2021/10/103F01/40665506/ptab081.pdf

  • Simulations of systematic effects arising from cosmic rays in the LiteBIRD space telescope, and effects on the measurements of CMB B-modes 査読

    S.L. Stever, T. Ghigna, M. Tominaga, G. Puglisi, M. Tsujimoto, M. Zeccoli Marazzini, M. Baratto, M. Tomasi, Y. Minami, S. Sugiyama, A. Kato, T. Matsumura, H. Ishino, G. Patanchon, M. Hazumi

    Journal of Cosmology and Astroparticle Physics   09 ( 013 )   1 - 22   2021年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1088/1475-7516/2021/09/013

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    その他リンク: https://iopscience.iop.org/article/10.1088/1475-7516/2021/09/013/pdf

  • Design of a frequency-independent optic axis Pancharatnam-based achromatic half-wave plate 査読

    Kunimoto Komatsu, Hirokazu Ishino, Nobuhiko Katayama, Tomotake Matsumura, Yuki Sakurai

    Journal of Astronomical Telescopes, Instruments, and Systems   7 ( 03 )   1 - 13   2021年8月

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    担当区分:責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1117/1.jatis.7.3.034005

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  • LiteBIRD satellite: JAXA's new strategic L-class mission for all-sky surveys of cosmic microwave background polarization 査読

    Masashi Hazumi, Peter A. Ade, Alexandre Adler, Erwan Allys, Kam Arnold, Didier Auguste, Jonathan Aumont, Ragnhild Aurlien, Jason Austermann, Carlo Baccigalupi, Anthony J. Banday, R. Banjeri, Rita B. Barreiro, Soumen Basak, Jim Beall, Dominic Beck, Shawn Beckman, Juan Bermejo, Paolo de Bernardis, Marco Bersanelli, Julien Bonis, Julian Borrill, Francois Boulanger, Sophie Bounissou, Maksym Brilenkov, Michael Brown, Martin Bucher, Erminia Calabrese, Paolo Campeti, Alessandro Carones, Francisco J. Casas, Anthony Challinor, Victor Chan, Kolen Cheung, Yuji Chinone, Jean F. Cliche, Loris Colombo, Fabio Columbro, Javier Cubas, Ari Cukierman, David Curtis, Giuseppe D'Alessandro, Nadia Dachlythra, Marco De Petris, Clive Dickinson, Patricia Diego-Palazuelos, Matt Dobbs, Tadayasu Dotani, Lionel Duband, Shannon Duff, Jean M. Duval, Ken Ebisawa, Tucker Elleflot, Hans K. Eriksen, Josquin Errard, Thomas Essinger-Hileman, Fabio Finelli, Raphael Flauger, Cristian Franceschet, Unni Fuskeland, Mathew Galloway, Ken Ganga, Jian R. Gao, Ricardo Genova-Santos, Martina Gerbino, Massimo Gervasi, Tommaso Ghigna, Eirik Gjerløw, Marcin L. Gradziel, Julien Grain, Frank Grupp, Alessandro Gruppuso, Jon E. Gudmundsson, Tijmen de Haan, Nils W. Halverson, Peter Hargrave, Takashi Hasebe, Masaya Hasegawa, Makoto Hattori, Sophie Henrot-Versillé, Daniel Herman, Diego Herranz, Charles A. Hill, Gene Hilton, Yukimasa Hirota, Eric Hivon, Renee A. Hlozek, Yurika Hoshino, Elena de la Hoz, Johannes Hubmayr, Kiyotomo Ichiki, Teruhito Iida, Hiroaki Imada, Kosei Ishimura, Hirokazu Ishino, Greg Jaehnig, Tooru Kaga, Shingo Kashima, Nobuhiko Katayama, Akihiro Kato, Takeo Kawasaki, Reijo Keskitalo, Theodore Kisner, Yohei Kobayashi, Nozomu Kogiso, Alan Kogut, Kazunori Kohri, Eiichiro Komatsu, Kunimoto Komatsu, Kuniaki Konishi, Nicoletta Krachmalnicoff, Ingo Kreykenbohm, Chao-Lin L. Kuo, Akihiro Kushino, Luca Lamagna, Jeff V. Lanen, Massimiliano Lattanzi, Adrian T. Lee, Clément Leloup, François Levrier, Eric Linder, Thibaut Louis, Gemma Luzzi, Thierry Maciaszek, Bruno Maffei, Davide Maino, Muneyoshi Maki, Stefano Mandelli, Enrique Martinez-Gonzalez, Silvia Masi, Tomotake Matsumura, Aniello Mennella, Marina Migliaccio, Yuto Minami, Kazuhisa Mitsuda, Joshua Montgomery, Ludovic Montier, Gianluca Morgante, Baptiste Mot, Yasuhiro Murata, John A. Murphy, Makoto Nagai, Yuya Nagano, Taketo Nagasaki, Ryo Nagata, Shogo Nakamura, Toshiya Namikawa, Paolo Natoli, Simran Nerval, Toshiyuki Nishibori, Haruki Nishino, Fabio Noviello, Créidhe O'Sullivan, Hideo Ogawa, Hiroyuki Ogawa, Shugo Oguri, Hiroyuki Ohsaki, Izumi S. Ohta, Norio Okada, Nozomi Okada, Luca Pagano, Alessandro Paiella, Daniela Paoletti, Guillaume Patanchon, Julien Peloton, Francesco Piacentini, Giampaolo Pisano, Gianluca Polenta, Davide Poletti, Thomas Prouvé, Giuseppe Puglisi, Damien Rambaud, Christopher Raum, Sabrina Realini, Martin Reinecke, Mathieu Remazeilles, Alessia Ritacco, Gilles Roudil, Jose A. Rubino-Martin, Megan Russell, Haruyuki Sakurai, Yuki Sakurai, Maura Sandri, Manami Sasaki, Giorgio Savini, Douglas Scott, Joseph Seibert, Yutaro Sekimoto, Blake Sherwin, Keisuke Shinozaki, Maresuke Shiraishi, Peter Shirron, Giovanni Signorelli, Graeme Smecher, Samantha Stever, Radek Stompor, Hajime Sugai, Shinya Sugiyama, Aritoki Suzuki, Junichi Suzuki, Trygve L. Svalheim, Eric Switzer, Ryota Takaku, Hayato Takakura, Satoru Takakura, Yusuke Takase, Youichi Takeda, Andrea Tartari, Ellen Taylor, Yutaka Terao, Harald Thommesen, Keith L. Thompson, Ben Thorne, Takayuki Toda, Maurizio Tomasi, Mayu Tominaga, Neil Trappe, Matthieu Tristram, Masatoshi Tsuji, Masahiro Tsujimoto, Carole Tucker, Joe Ullom, Gerard Vermeulen, Patricio Vielva, Fabrizio Villa, Michael Vissers, Nicola Vittorio, Ingunn Wehus, Jochen Weller, Benjamin Westbrook, Joern Wilms, Berend Winter, Edward J. Wollack, Noriko Y. Yamasaki, Tetsuya Yoshida, Junji Yumoto, Mario Zannoni, Andrea Zonca

    Space Telescopes and Instrumentation 2020: Optical, Infrared, and Millimeter Wave   11443 ( 114432F )   1 - 20   2020年12月

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)  

    DOI: 10.1117/12.2563050

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  • Concept design of low frequency telescope for CMB B-mode polarization satellite LiteBIRD 査読

    Yutaro Sekimoto, Peter Ade, Alexandre Adler, Erwan Allys, Kam Arnold, Didier Auguste, Jonathan Aumont, Ragnhild Aurlien, Jason Austermann, Carlo Baccigalupi, Anthony Banday, Ranajoy Banerji, Rita Barreiro, Soumen Basak, Jim Beall, Dominic Beck, Shawn Beckman, Juan Bermejo, Paolo de Bernardis, Marco Bersanelli, Julien Bonis, Julian Borrill, Francois Boulanger, Sophie Bounissou, Maksym Brilenkov, Michael Brown, Martin Bucher, Erminia Calabrese, Paolo Campeti, Alessandro Carones, Francisco Casas, Anthony Challinor, Victor Chan, Kolen Cheung, Yuji Chinone, Jean Cliche, Loris Colombo, Fabio Columbro, Javier Cubas, Ari Cukierman, David Curtis, Giuseppe D'Alessandro, Nadia Dachlythra, Marco De Petris, Clive Dickinson, Patricia Diego-Palazuelos, Matt Dobbs, Tadayasu Dotani, Lionel Duband, Shannon Duff, Jean Duval, Ken Ebisawa, Tucker Elleflot, Hans Eriksen, Josquin Errard, Thomas Essinger-Hileman, Fabio Finelli, Raphael Flauger, Cristian Franceschet, Unni Fuskeland, Mathew Galloway, Ken Ganga, Jian Gao, Ricardo Genova-Santos, Martina Gerbino, Massimo Gervasi, Tommaso Ghigna, Eirik Gjerløw, Marcin Gradziel, Julien Grain, Frank Grupp, Alessandro Gruppuso, Jon Gudmundsson, Tijmen de Haan, Nils Halverson, Peter Hargrave, Takashi Hasebe, Masaya Hasegawa, Makoto Hattori, Masashi Hazumi, Sophie Henrot-Versillé, Daniel Herman, Diego Herranz, Charles Hill, Gene Hilton, Yukimasa Hirota, Eric hivon, Renee Hlozek, Yurika Hoshino, Elena de la Hoz, Johannes Hubmayr, Kiyotomo Ichiki, Teruhito iida, Hiroaki Imada, Kosei Ishimura, Hirokazu Ishino, Greg Jaehnig, Tooru Kaga, Shingo Kashima, Nobuhiko Katayama, Akihiro Kato, Takeo Kawasaki, Reijo Keskitalo, Theodore Kisner, Yohei Kobayashi, Nozomu Kogiso, Alan Kogut, Kazunori Kohri, Eiichiro Komatsu, Kunimoto Komatsu, Kuniaki Konishi, Nicoletta Krachmalnicoff, Ingo Kreykenbohm, Chao-Lin Kuo, Akihiro Kushino, Luca Lamagna, Jeff Lanen, Massimiliano Lattanzi, Adrien Lee, Clément Leloup, François Levrier, Eric Linder, Thibaut Louis, Gemma Luzzi, Thierry Maciaszek, Bruno Maffei, Davide Maino, Muneyoshi Maki, Stefano Mandelli, Enrique Martinez-Gonzalez, Silvia Masi, Tomotake Matsumura, Aniello Mennella, Marina Migliaccio, Yuto Minanmi, Kazuhisa Mitsuda, Josua Montgomery, Ludovic Montier, Gianluca Morgante, Baptise Mot, Yasuhiro Murata, John Murphy, Makoto Nagai, Yuya Nagano, Takeo Nagasaki, Ryo Nagata, Shogo Nakamura, Toshiya Namikawa, Paolo Natoli, Simran Nerval, Toshiyuki Nishibori, Haruki Nishino, Créidhe O'Sullivan, Hideo Ogawa, Hiroyuki Ogawa, Shogo Oguri, Hiroyuki Osaki, Izumi Ohta, Norio Okada, Nozomi Okada, Luca Pagano, Alessandro Paiella, Daniela Paoletti, Guillaume Patanchon, Julien Peloton, Francesco Piacentini, Giampaolo Pisano, Gianluca Polenta, Davide Poletti, Thomas Prouvé, Giuseppe Puglisi, Damien Tambaud, Christopher Raum, Sabrina Realini, Martin Reinecke, Mathieu Remazeilles, Alessa Ritacco, Gilles Roudil, Jose Rubino-Martin, Megan Russell, Haruyuki Sakurai, Yuki Sakurai, Maura Sandri, Manami Sasaki, Giorgio Savini, Douglas Scott, Joseph Seibert, Blake Sherwin, Keisuke Shinozaki, Maresuke Shiraishi, Peter Shirron, Giovanni Signorelli, Graeme Smecher, Samantha Stever, Radek Stompor, Hajime Sugai, Shinya Sugiyama, aritoki Suzuki, Junichi Suzuki, Trygve Svalheim, Eric Switzer, Ryota Takaku, hayato Takakura, satoru Takakura, Yusuke Takase, Youichi Takeda, Andrea Tartari, Ellen Taylor, Yutaka Terao, Harald Thommesen, Keith L. Thompson, Ben Thorne, Takayuki Toda, Maurizio Tomasi, Mayu Tominaga, Neil Trappe, Matthieu Tristram, Masatoshi Tsuji, Masahiro Tsujimoto, Carole Tucker, Joe Ullom, Gerard Vermeulen, Patricio Vielva, Fabrizio Villa, Michael Vissers, Nicola Vittorio, Ingunn Wehus, Jochen Weller, Benjamin Westbrook, Joern Wilms, Berend Winter, Edward Wollack, Noriko Y. Yamasaki, Tetsuya Yoshida, Junji Yumoto, Mario Zannoni, Andrea Zonca

    Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X   11453 ( 1145310 )   1 - 21   2020年12月

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)  

    DOI: 10.1117/12.2561841

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  • Demonstration of anti-reflective structures over a large area for CMB polarization experiments 査読

    Ryota Takaku, Shaul Hanany, Yurika Hoshino, Hiroaki Imada, Hirokazu Ishino, Nobuhiko Katayama, Kunimoto Komatsu, Kuniaki Konishi, Makoto Kuwata Gonokami, Tomotake Matsumura, Kazuhisa Mitsuda, Haruyuki Sakurai, Yuki Sakurai, Qi Wen, Noriko Yamasaki, Karl Young, Junji Yumoto

    Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X   11453 ( 114531A )   1 - 12   2020年12月

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)  

    DOI: 10.1117/12.2562028

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  • Broadband, millimeter-wave anti-reflective structures on sapphire ablated with femto-second laser 査読

    R. Takaku, S. Hanany, H. Imada, H. Ishino, N. Katayama, K. Komatsu, K. Konishi, M. Kuwata-Gonokami, T. Matsumura, K. Mitsuda, H. Sakurai, Y. Sakurai, Q. Wen, N. Y. Yamasaki, K. Young, J. Yumoto

    Journal of Applied Physics   128 ( 225302 )   1 - 11   2020年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1063/5.0022765

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  • Search for proton decay via p -> e(+)pi(0) and p -> mu(+)pi(0) with an enlarged fiducial volume in Super-Kamiokande I-IV

    A. Takenaka, K. Abe, C. Bronner, Y. Hayato, M. Ikeda, S. Imaizumi, H. Ito, J. Kameda, Y. Kataoka, Y. Kato, Y. Kishimoto, Ll Marti, M. Miura, S. Moriyama, T. Mochizuki, Y. Nagao, M. Nakahata, Y. Nakajima, S. Nakayama, T. Okada, K. Okamoto, A. Orii, G. Pronost, H. Sekiya, M. Shiozawa, Y. Sonoda, Y. Suzuki, A. Takeda, Y. Takemoto, H. Tanaka, T. Yano, R. Akutsu, S. Han, T. Kajita, K. Okumura, T. Tashiro, R. Wang, J. Xia, D. Bravo-Berguno, L. Labarga, P. Fernandez, B. Zaldivar, F. D. M. Blaszczyk, E. Kearns, J. L. Raaf, J. L. Stone, L. Wan, T. Wester, B. W. Pointon, J. Bian, N. J. Griskevich, W. R. Kropp, S. Locke, S. Mine, M. B. Smy, H. W. Sobel, Takhistov, V, P. Weatherly, K. S. Ganezer, J. Hill, J. Y. Kim, I. T. Lim, R. G. Park, B. Bodur, K. Scholberg, C. W. Walter, A. Coffani, O. Drapier, S. El Hedri, A. Giampaolo, M. Gonin, Th A. Mueller, P. Paganini, B. Quilain, T. Ishizuka, T. Nakamura, J. S. Jang, J. G. Learned, S. Matsuno, L. H. Anthony, R. P. Litchfield, A. A. Sztuc, Y. Uchida, Berardi, V, M. G. Catanesi, E. Radicioni, N. F. Calabria, L. N. Machado, G. De Rosa, G. Collazuol, F. Iacob, M. Lamoureux, N. Ospina, L. Ludovici, Y. Nishimura, S. Cao, M. Friend, T. Hasegawa, T. Ishida, M. Jakkapu, T. Kobayashi, T. Matsubara, T. Nakadaira, K. Nakamura, Y. Oyama, K. Sakashita, T. Sekiguchi, T. Tsukamoto, M. Hasegawa, Y. Isobe, H. Miyabe, Y. Nakano, T. Shiozawa, T. Sugimoto, A. T. Suzuki, Y. Takeuchi, S. Yamamoto, A. Ali, Y. Ashida, J. Feng, S. Hirota, A. K. Ichikawa, M. Jiang, T. Kikawa, M. Mori, K. E. Nakamura, T. Nakaya, R. A. Wendell, K. Yasutome, N. McCauley, P. Mehta, A. Pritchard, K. M. Tsui, Y. Fukuda, Y. Itow, H. Menjo, T. Niwa, K. Sato, M. Taani, M. Tsukada, P. Mijakowski, K. Frankiewicz, C. K. Jung, G. Santucci, C. Vilela, M. J. Wilking, C. Yanagisawa, D. Fukuda, M. Harada, K. Hagiwara, T. Horai, H. Ishino, S. Ito, Y. Koshio, K. Ma, N. Piplani, S. Sakai, M. Sakuda, Y. Takahira, C. Xu, Y. Kuno, G. Barr, D. Barrow, L. Cook, C. Simpson, D. Wark, F. Nova, T. Boschi, F. Di Lodovico, S. Molina Segwick, S. Zsoldos, J. Y. Yang, S. J. Jenkins, J. M. McElwee, M. D. Thiesse, L. F. Thompson, H. Okazawa, Y. Choi, S. B. Kim, Yu, I, K. Nishijima, M. Koshiba, K. Iwamoto, N. Ogawa, M. Yokoyama, A. Goldsack, K. Martens, M. R. Vagins, M. Kuze, M. Tanaka, T. Yoshida, M. Inomoto, M. Ishitsuka, R. Matsumoto, K. Ohta, M. Shinoki, J. F. Martin, C. M. Nantais, H. A. Tanaka, T. Towstego, M. Hartz, A. Konaka, P. de Perio, N. W. Prouse, S. Chen, B. D. Xu, M. Posiadala-Zezula, B. Richards, B. Jamieson, J. Walker, A. Minamino, K. Okamoto, G. Pintaudi, R. Sasaki

    PHYSICAL REVIEW D   102 ( 11 )   2020年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We have searched for proton decay via p -> e(+)pi(0) and p -> mu(+)pi(0) modes with the enlarged fiducial volume data of Super-Kamiokande from April 1996 to May 2018, which corresponds to 450 kton . years exposure. We have accumulated about 25% more livetime and enlarged the fiducial volume of the SuperKamiokande detector from 22.5 kton to 27.2 kton for this analysis, so that 144 kton . years of data, including 78 kton . years of additional fiducial volume data, has been newly analyzed. No candidates have been found for p -> e(+)pi(0) and one candidate remains for p -> mu(+)pi(0) in the conventional 22.5 kton fiducial volume and it is consistent with the atmospheric neutrino background prediction. We set lower limits on the partial lifetime for each of these modes: tau/B(p -> e(+)pi(0)) > 2.4 x 10(34) years and tau/B(p -> mu(+)pi(0))> 1.6 x 10(34) years at 90% confidence level.

    DOI: 10.1103/PhysRevD.102.112011

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  • Requirements for future CMB satellite missions: photometric and band-pass response calibration 査読

    T. Ghigna, T. Matsumura, G. Patanchon, H. Ishino, M. Hazumi

    Journal of Cosmology and Astroparticle Physics   11 ( 030 )   1 - 23   2020年11月

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    担当区分:責任著者   記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1088/1475-7516/2020/11/030

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    その他リンク: https://iopscience.iop.org/article/10.1088/1475-7516/2020/11/030

  • Indirect search for dark matter from the Galactic Center and halo with the Super-Kamiokande detector 査読

    K. Abe, C. Bronner, Y. Haga, Y. Hayato, M. Ikeda, S. Imaizumi, H. Ito, K. Iyogi, J. Kameda, Y. Kataoka, Y. Kato, Y. Kishimoto, Ll. Marti, M. Miura, S. Moriyama, T. Mochizuki, Y. Nagao, M. Nakahata, Y. Nakajima, T. Nakajima, S. Nakayama, T. Okada, K. Okamoto, A. Orii, G. Pronost, H. Sekiya, M. Shiozawa, Y. Sonoda, A. Takeda, A. Takenaka, H. Tanaka, S. Tasaka, T. Tomura, K. Ueno, T. Yano, T. Yokozawa, R. Akutsu, S. Han, T. Irvine, T. Kajita, I. Kametani, K. P. Lee, T. McLachlan, K. Okumura, E. Richard, T. Tashiro, R. Wang, J. Xia, D. Bravo-Berguño, L. Labarga, P. Fernandez, F. d. M. Blaszczyk, J. Gustafson, C. Kachulis, E. Kearns, J. L. Raaf, J. L. Stone, L. R. Sulak, S. Sussman, L. Wan, T. Wester, S. Berkman, S. Tobayama, J. Bian, G. Carminati, M. Elnimr, N. J. Griskevich, W. R. Krop, S. Locke, S. Mine, A. Renshaw, M. B. Smy, H. W. Sobel, V. Takhistov, P. Weatherly, B. L. Hartfiel, J. Hill, W. E. Keig, N. Hong, J. Y. Kim, I. T. Lim, R. G. Park, T. Akiri, B. Bodur, A. Himmel, Z. Li, E. O’Sullivan, K. Scholberg, C. W. Walter, T. Wongjirad, A. Coffani, O. Drapier, S. El Hedri, A. Giampaolo, M. Gonin, J. Imber, Th. A. Mueller, P. Paganini, B. Quilain, T. Ishizuka, T. Nakamura, J. S. Jang, K. Choi, J. G. Learned, S. Matsuno, S. N. Smith, J. Amey, L. H. V. Anthony, R. P. Litchfield, W. Y. Ma, A. A. Sztuc, Y. Uchida, M. O. Wascko, V. Berardi, M. G. Catanesi, R. A. Intonti, E. Radicioni, N. F. Calabria, L. N. Machado, G. De Rosa, G. Collazuol, F. Iacob, M. Lamoureux, N. Ospina, L. Ludovici, T. Boschi, F. Di Lodovico, S. Molina Sedgwick, S. Zsoldos, Y. Nishimura, S. Cao, M. Friend, T. Hasegawa, T. Ishida, T. Ishii, T. Kobayashi, T. Nakadaira, K. Nakamura, Y. Oyama, K. Sakashita, T. Sekiguchi, T. Tsukamoto, KE. Abe, M. Hasegawa, Y. Isobe, H. Miyabe, Y. Nakano, T. Shiozawa, T. Sugimoto, A. T. Suzuki, Y. Takeuchi, S. Yamamoto, A. Ali, Y. Ashida, T. Hayashino, T. Hiraki, S. Hirota, K. Huang, K. Ieki, M. Jiang, T. Kikawa, M. Mori, A. Murakami, KE. Nakamura, T. Nakaya, N. D. Patel, K. Suzuki, S. Takahashi, K. Tateishi, R. A. Wendell, N. McCauley, P. Mehta, A. Pritchard, K. M. Tsui, Y. Fukuda, Y. Itow, H. Menjo, G. Mitsuka, M. Murase, F. Muto, T. Niwa, K. Sato, T. Suzuki, M. Taani, M. Tsukada, P. Mijakowski, K. Frankiewicz, J. Hignight, C. K. Jung, X. Li, J. L. Palomino, G. Santucci, C. Vilela, M. J. Wilking, C. Yanagisawa, D. Fukuda, K. Hagiwara, M. Harada, T. Horai, H. Ishino, S. Ito, T. Kayano, A. Kibayashi, Y. Koshio, W. Ma, T. Mori, H. Nagata, N. Piplani, M. Sakuda, S. Seiya, Y. Takahira, C. Xu, R. Yamaguchi, Y. Kuno, G. Barr, D. Barrow, L. Cook, C. Simpson, D. Wark, F. Nova, R. Tacik, J. Y. Yang, A. Cole, S. J. Jenkins, J. McElwee, M. Thiesse, L. Thompson, H. Okazawa, S. B. Kim, Y. Choi, K. Ito, K. Nishijima, K. Iwamoto, M. Koshiba, Y. Suda, M. Yokoyama, R. G. Calland, A. Goldsack, K. Martens, M. Murdoch, Y. Suzuki, M. R. Vagins, D. Hamabe, M. Kuze, Y. Okajima, M. Tanaka, T. Yoshida, M. Inomoto, M. Ishitsuka, R. Matsumoto, K. Ohta, M. Shinoki, J. F. Martin, C. M. Nantais, H. A. Tanaka, T. Towstego, M. Hartz, A. Konaka, P. de Perio, N. W. Prouse, S. Chen, B. D. Xu, Y. Zhang, B. Richards, K. Connolly, R. J. Wilkes, B. Jamieson, J. Walker, P. Giorgio, A. Minamino, K. Okamoto, G. Pintaudi

    Physical Review D   102 ( 072002 )   1 - 14   2020年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/physrevd.102.072002

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    その他リンク: http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevD.102.072002/fulltext

  • Updated Design of the CMB Polarization Experiment Satellite LiteBIRD 査読

    H. Sugai, P. A. R. Ade, Y. Akiba, D. Alonso, K. Arnold, J. Aumont, J. Austermann, C. Baccigalupi, A. J. Banday, R. Banerji, R. B. Barreiro, S. Basak, J. Beall, S. Beckman, M. Bersanelli, J. Borrill, F. Boulanger, M. L. Brown, M. Bucher, A. Buzzelli, E. Calabrese, F. J. Casas, A. Challinor, V. Chan, Y. Chinone, J.-F. Cliche, F. Columbro, A. Cukierman, D. Curtis, P. Danto, P. de Bernardis, T. de Haan, M. De Petris, C. Dickinson, M. Dobbs, T. Dotani, L. Duband, A. Ducout, S. Duff, A. Duivenvoorden, J.-M. Duval, K. Ebisawa, T. Elleflot, H. Enokida, H. K. Eriksen, J. Errard, T. Essinger-Hileman, F. Finelli, R. Flauger, C. Franceschet, U. Fuskeland, K. Ganga, J.-R. Gao, R. Génova-Santos, T. Ghigna, A. Gomez, M. L. Gradziel, J. Grain, F. Grupp, A. Gruppuso, J. E. Gudmundsson, N. W. Halverson, P. Hargrave, T. Hasebe, M. Hasegawa, M. Hattori, M. Hazumi, S. Henrot-Versille, D. Herranz, C. Hill, G. Hilton, Y. Hirota, E. Hivon, R. Hlozek, D.-T. Hoang, J. Hubmayr, K. Ichiki, T. Iida, H. Imada, K. Ishimura, H. Ishino, G. C. Jaehnig, M. Jones, T. Kaga, S. Kashima, Y. Kataoka, N. Katayama, T. Kawasaki, R. Keskitalo, A. Kibayashi, T. Kikuchi, K. Kimura, T. Kisner, Y. Kobayashi, N. Kogiso, A. Kogut, K. Kohri, E. Komatsu, K. Komatsu, K. Konishi, N. Krachmalnicoff, C. L. Kuo, N. Kurinsky, A. Kushino, M. Kuwata-Gonokami, L. Lamagna, M. Lattanzi, A. T. Lee, E. Linder, B. Maffei, D. Maino, M. Maki, A. Mangilli, E. Martínez-González, S. Masi, R. Mathon, T. Matsumura, A. Mennella, M. Migliaccio, Y. Minami, K. Mistuda, D. Molinari, L. Montier, G. Morgante, B. Mot, Y. Murata, J. A. Murphy, M. Nagai, R. Nagata, S. Nakamura, T. Namikawa, P. Natoli, S. Nerval, T. Nishibori, H. Nishino, Y. Nomura, F. Noviello, C. O’Sullivan, H. Ochi, H. Ogawa, H. Ogawa, H. Ohsaki, I. Ohta, N. Okada, N. Okada, L. Pagano, A. Paiella, D. Paoletti, G. Patanchon, F. Piacentini, G. Pisano, G. Polenta, D. Poletti, T. Prouvé, G. Puglisi, D. Rambaud, C. Raum, S. Realini, M. Remazeilles, G. Roudil, J. A. Rubiño-Martín, M. Russell, H. Sakurai, Y. Sakurai, M. Sandri, G. Savini, D. Scott, Y. Sekimoto, B. D. Sherwin, K. Shinozaki, M. Shiraishi, P. Shirron, G. Signorelli, G. Smecher, P. Spizzi, S. L. Stever, R. Stompor, S. Sugiyama, A. Suzuki, J. Suzuki, E. Switzer, R. Takaku, H. Takakura, S. Takakura, Y. Takeda, A. Taylor, E. Taylor, Y. Terao, K. L. Thompson, B. Thorne, M. Tomasi, H. Tomida, N. Trappe, M. Tristram, M. Tsuji, M. Tsujimoto, C. Tucker, J. Ullom, S. Uozumi, S. Utsunomiya, J. Van Lanen, G. Vermeulen, P. Vielva, F. Villa, M. Vissers, N. Vittorio, F. Voisin, I. Walker, N. Watanabe, I. Wehus, J. Weller, B. Westbrook, B. Winter, E. Wollack, R. Yamamoto, N. Y. Yamasaki, M. Yanagisawa, T. Yoshida, J. Yumoto, M. Zannoni, A. Zonca

    Journal of Low Temperature Physics   199 ( 3-4 )   1107 - 1117   2020年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Springer Science and Business Media LLC  

    <title>Abstract</title>Recent developments of transition-edge sensors (TESs), based on extensive experience in ground-based experiments, have been making the sensor techniques mature enough for their application on future satellite cosmic microwave background (CMB) polarization experiments. LiteBIRD is in the most advanced phase among such future satellites, targeting its launch in Japanese Fiscal Year 2027 (2027FY) with JAXA’s H3 rocket. It will accommodate more than 4000 TESs in focal planes of reflective low-frequency and refractive medium-and-high-frequency telescopes in order to detect a signature imprinted on the CMB by the primordial gravitational waves predicted in cosmic inflation. The total wide frequency coverage between 34 and 448 GHz enables us to extract such weak spiral polarization patterns through the precise subtraction of our Galaxy’s foreground emission by using spectral differences among CMB and foreground signals. Telescopes are cooled down to 5 K for suppressing thermal noise and contain polarization modulators with transmissive half-wave plates at individual apertures for separating sky polarization signals from artificial polarization and for mitigating from instrumental 1/<italic>f</italic> noise. Passive cooling by using V-grooves supports active cooling with mechanical coolers as well as adiabatic demagnetization refrigerators. Sky observations from the second Sun–Earth Lagrangian point, L2, are planned for 3 years. An international collaboration between Japan, the USA, Canada, and Europe is sharing various roles. In May 2019, the Institute of Space and Astronautical Science, JAXA, selected LiteBIRD as the strategic large mission No. 2.

    DOI: 10.1007/s10909-019-02329-w

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  • Evaluation of gadolinium’s action on water Cherenkov detector systems with EGADS 査読

    Ll. Marti, M. Ikeda, Y. Kato, Y. Kishimoto, M. Nakahata, Y. Nakajima, Y. Nakano, S. Nakayama, Y. Okajima, A. Orii, G. Pronost, H. Sekiya, M. Shiozawa, H. Tanaka, K. Ueno, S. Yamada, T. Yano, T. Yokozawa, M. Murdoch, J. Schuemann, M.R. Vagins, K. Bays, G. Carminati, N.J. Griskevich, W.R. Kropp, S. Locke, A. Renshaw, M.B. Smy, P. Weatherly, S. Ito, H. Ishino, A. Kibayashi, Y. Koshio, T. Mori, M. Sakuda, R. Yamaguchi, P. Fernandez, L. Labarga, I. Bandac, J. Perez, J. Amey, R.P. Litchfield, A. Sztuc, Y. Uchida, W.Y. Ma, A. Goldsack, C. Simpson, D. Wark, L.H.V. Anthony, N. McCauley, A. Pritchard, F. Di Lodovico, B. Richards, A. Cole, M. Thiesse, L. Thompson, J. Imber, S.V. Cao, K. Ito, Y. Takeuchi, R. Akutsu, Y. Nishimura, K. Okumura, S. Hirota, F. Muto, M. Yokoyama, Y. Suda, H. Zhang

    Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   959 ( 163549 )   1 - 10   2020年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.nima.2020.163549

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  • Search for proton decay into three charged leptons in 0.37 megaton-years exposure of the Super-Kamiokande

    M. Tanaka, K. Abe, C. Bronner, Y. Hayato, M. Ikeda, S. Imaizumi, H. Ito, J. Kameda, Y. Kataoka, Y. Kato, Y. Kishimoto, Ll Marti, M. Miura, S. Moriyama, T. Mochizuki, M. Nakahata, Y. Nakajima, S. Nakayama, T. Okada, K. Okamoto, A. Orii, G. Pronost, H. Sekiya, M. Shiozawa, Y. Sonoda, A. Takeda, A. Takenaka, H. Tanaka, T. Yano, R. Akutsu, T. Kajita, K. Okumura, R. Wang, J. Xia, D. Bravo-Berguno, L. Labarga, P. Fernandez, F. D. M. Blaszczyk, E. Kearns, J. L. Raaf, J. L. Stone, L. Wan, T. Wester, J. Bian, N. J. Griskevich, W. R. Kropp, S. Locke, S. Mine, M. B. Smy, H. W. Sobel, Takhistov, V, P. Weatherly, J. Hill, J. Y. Kim, I. T. Lim, R. G. Park, B. Bodur, K. Scholberg, C. W. Walter, A. Coffani, O. Drapier, S. El Hedri, M. Gonin, Th A. Mueller, P. Paganini, T. Ishizuka, T. Nakamura, J. S. Jang, J. G. Learned, S. Matsuno, R. P. Litchfield, A. A. Sztuc, Y. Uchida, Berardi, V, M. G. Catanesi, E. Radicioni, N. F. Calabria, G. De Rosa, G. Collazuol, F. Iacob, L. Ludovici, Y. Nishimura, S. Cao, M. Friend, T. Hasegawa, T. Ishida, T. Kobayashi, T. Nakadaira, K. Nakamura, Y. Oyama, K. Sakashita, T. Sekiguchi, T. Tsukamoto, M. Hasegawa, Y. Isobe, H. Miyabe, Y. Nakano, T. Shiozawa, T. Sugimoto, A. T. Suzuki, Y. Takeuchi, A. Ali, Y. Ashida, S. Hirota, M. Jiang, T. Kikawa, M. Mori, Ke Nakamura, T. Nakaya, R. A. Wendell, L. H. Anthony, N. McCauley, P. Mehta, A. Pritchard, K. M. Tsui, Y. Fukuda, Y. Itow, T. Niwa, M. Taani, M. Tsukada, P. Mijakowski, K. Frankiewicz, C. K. Jung, C. Vilela, M. J. Wilking, C. Yanagisawa, D. Fukuda, M. Harada, K. Hagiwara, T. Horai, H. Ishino, S. Ito, Y. Koshio, M. Sakuda, Y. Takahira, C. Xu, Y. Kuno, D. Barrow, L. Cook, C. Simpson, D. Wark, F. Nova, T. Boschi, F. Di Lodovico, S. Molina Sedgwick, S. Zsoldos, S. B. Kim, J. Y. Yang, M. Thiesse, L. Thompson, H. Okazawa, Y. Choi, K. Nishijima, M. Koshiba, M. Yokoyama, A. Goldsack, K. Martens, B. Quilain, Y. Suzuki, M. R. Vagins, M. Kuze, T. Yoshida, M. Ishitsuka, R. Matsumoto, K. Ohta, J. F. Martin, C. M. Nantais, H. A. Tanaka, T. Towstego, M. Hartz, A. Konaka, P. de Perio, N. W. Prouse, S. Chen, B. D. Xu, B. Richards, B. Jamieson, J. Walker, A. Minamino, G. Pintaudi

    PHYSICAL REVIEW D   101 ( 5 )   2020年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    A search for proton decay into three charged leptons has been performed by using 0.37 Mton . years of data collected in Super-Kamiokande. All possible combinations of electrons, muons, and their antiparticles consistent with charge conservation were considered as decay modes. No significant excess of events has been found over the background, and lower limits on the proton lifetime divided by the branching ratio have been obtained. The limits range between 9.2 x 10(33) and 3.4 x 10(34) years at 90% confidence level, improving by more than an order of magnitude upon limits from previous experiments. A first limit has been set for the p -> mu(-)e(+)e(+) mode.

    DOI: 10.1103/PhysRevD.101.052011

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  • Demonstration of the broadband half-wave plate using the nine-layer sapphire for the cosmic microwave background polarization experiment 査読

    Kunimoto Komatsu, Tomotake Matsumura, Hiroaki Imada, Hirokazu Ishino, Nobuhiko Katayama, Yuki Sakurai

    JOURNAL OF ASTRONOMICAL TELESCOPES INSTRUMENTS AND SYSTEMS   5 ( 4 )   1 - 14   2019年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1117/1.JATIS.5.4.044008

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  • Demonstration of broadband anti-reflection coating on sapphire based on mm-wave sub-wavelength structures

    R. Takaku, T. Matsumura, H. Sakurai, K. Konishi, H. Imada, S. Hanany, K. Young, Q. Wen, Y. Sakurai, N. Katayama, K. Mitsuda, N. Yamasaki, K. Komatsu, H. Ishino, J. Yumoto, M. Kuwata-Gonokami

    International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz   2019-September ( 19079854 )   1 - 2   2019年9月

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)  

    DOI: 10.1109/IRMMW-THz.2019.8873910

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  • Bandpass mismatch error for satellite CMB experiments II: correcting for the spurious signal 査読

    Banerji Ranajoy, Patanchon Guillaume, Delabrouille Jacques, Hazumi Masashi, Due Thuong Hoang, Ishino Hirokazu, Matsumura Tomotake

    JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS   07 ( 043 )   1 - 27   2019年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1088/1475-7516/2019/07/043

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  • Atmospheric neutrino oscillation analysis with improved event reconstruction in Super-Kamiokande IV 査読

    M Jiang, K Abe, C Bronner, Y Hayato, M Ikeda, K Iyogi, J Kameda, Y Kato, Y Kishimoto, L l Marti, M Miura, S Moriyama, T Mochizuki, M Nakahata, Y Nakajima, Y Nakano, S Nakayama, T Okada, K Okamoto, A Orii, G Pronost, H Sekiya, M Shiozawa, Y Sonoda, A Takeda, A Takenaka, H Tanaka, T Yano, R Akutsu, T Kajita, Y Nishimura, K Okumura, R Wang, J Xia, L Labarga, P Fernandez, F, d M Blaszczyk, C Kachulis, E Kearns, J L Raaf, J L Stone, S Sussman, S Berkman, J Bian, N J Griskevich, W R Kropp, S Locke, S Mine, P Weatherly, M B Smy, H W Sobel, V Takhistov, K S Ganezer, J Hill, J Y Kim, I T Lim, R G Park, B Bodur, K Scholberg, C W Walter, M Gonin, J Imber, Th A Mueller, T Ishizuka, T Nakamura, J S Jang, K Choi, J G Learned, S Matsuno, R P Litchfield, Y Uchida, M O Wascko, N F Calabria, M G Catanesi, R A Intonti, E Radicioni, G De Rosa, A Ali, G Collazuol, F Iacob, L Ludovici, S Cao, M Friend, T Hasegawa, T Ishida, T Kobayashi, T Nakadaira, K Nakamura, Y Oyama, K Sakashita, T Sekiguchi, T Tsukamoto, K E Abe, M Hasegawa, Y Isobe, H Miyabe, T Sugimoto, A T Suzuki, Y Takeuchi, Y Ashida, T Hayashino, S Hirota, T Kikawa, M Mori, K E Nakamura, T Nakaya, R A Wendell, L H V Anthony, N McCauley, A Pritchard, K M Tsui, Y Fukuda, Y Itow, M Murrase, P Mijakowski, K Frankiewicz, C K Jung, X Li, J L Palomino, G Santucci, C Vilela, M J Wilking, C Yanagisawa, D Fukuda, K Hagiwara, H Ishino, S Ito, Y Koshio, M Sakuda, Y Takahira, C Xu, Y Kuno, C Simpson, D Wark, F Di Lodovico, B Richards, S Molina Sedgwick, R Tacik, S B Kim, M Thiesse, L Thompson, H Okazawa, Y Choi, K Nishijima, M Koshiba, M Yokoyama, A Goldsack, K Martens, M Murdoch, B Quilain, Y Suzuki, M R Vagins, M Kuze, Y Okajima, T Yoshida, M Ishitsuka, J F Martin, C M Nantais, H A Tanaka, T Towstego, M Hartz, A Konaka, P de Perio, S Chen, L Wan, A Minamino

    Progress of Theoretical and Experimental Physics   5 ( 053F01 )   1 - 39   2019年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1093/ptep/ptz015

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  • LiteBIRD: A Satellite for the Studies of B-Mode Polarization and Inflation from Cosmic Background Radiation Detection 査読

    Hazumi M, Ade P. A. R, Akiba Y, Alonso D, Arnold K, Aumont J, Baccigalupi C, Barron D, Basak S, Beckman S, Borrill J, Boulanger F, Bucher M, Calabrese E, Chinone Y, Cho S, Cukierman A, Curtis D. W, de Haan T, Dobbs M, Dominjon A, Dotani T, Duband L, Ducout A, Dunkley J, Duval J. M, Elleflot T, Eriksen H. K, Errard J, Fischer J, Fujino T, Funaki T, Fuskeland U, Ganga K, Goeckner-Wald N, Grain J, Halverson N. W, Hamada T, Hasebe T, Hasegawa M, Hattori K, Hattori M, Hayes L, Hidehira N, Hill C. A, Hilton G, Hubmayr J, Ichiki K, Iida T, Imada H, Inoue M, Inoue Y, Irwin K. D, Ishino H, Jeong O, Kanai H, Kaneko D, Kashima S, Katayama N, Kawasaki T, Kernasovskiy S. A, Keskitalo R, Kibayashi A, Kida Y, Kimura K, Kisner T, Kohri K, Komatsu E, Komatsu K, Kuo C. L, Kurinsky N. A, Kusaka A, Lazarian A, Lee A. T, Li D, Linder E, Maffei B, Mangilli A, Maki M, Matsumura T, Matsuura S, Meilhan D, Mima S, Minami Y, Mitsuda K, Montier L, Nagai M, Nagasaki T, Nagata R, Nakajima M, Nakamura S, Namikawa T, Naruse M, Nishino H, Nitta T, Noguchi T, Ogawa H, Oguri S, Okada N, Okamoto A, Okamura T, Otani C, Patanchon G, Pisano G, Rebeiz G, Remazeilles M, Richards P. L, Sakai S, Sakurai Y, Sato Y, Sato N, Sawada M, Segawa Y, Sekimoto Y, Seljak U, Sherwin B. D, Shimizu T, Shinozaki K, Stompor R, Sugai H, Sugita H, Suzuki A, Suzuki J, Tajima O, Takada S, Takaku R, Takakura S, Takatori S, Tanabe D, Taylor E, Thompson K. L, Thorne B, Tomaru T, Tomida T, Tomita N, Tristram M, Tucker C, Turin P, Tsujimoto M, Uozumi S, Utsunomiya S, Uzawa Y, Vansyngel F, Wehus I. K, Westbrook B, Willer M, Whitehorn N, Yamada Y, Yamamoto R, Yamasaki N, Yamashita T, Yoshida M

    JOURNAL OF LOW TEMPERATURE PHYSICS   194 ( 5-6 )   443 - 452   2019年3月

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  • Measurement of the neutrino-oxygen neutral-current quasielastic cross section using atmospheric neutrinos at Super-Kamiokande 査読

    L. Wan, K. Abe, C. Bronner, Y. Hayato, M. Ikeda, K. Iyogi, J. Kameda, Y. Kato, Y. Kishimoto, Ll. Marti, M. Miura, S. Moriyama, T. Mochizuki, M. Nakahata, Y. Nakajima, Y. Nakano, S. Nakayama, T. Okada, K. Okamoto, A. Orii, G. Pronost, H. Sekiya, M. Shiozawa, Y. Sonoda, A. Takeda, A. Takenaka, H. Tanaka, T. Yano, R. Akutsu, T. Kajita, Y. Nishimura, K. Okumura, R. Wang, J. Xia, L. Labarga, P. Fernandez, F. d. M. Blaszczyk, C. Kachulis, E. Kearns, J. L. Raaf, J. L. Stone, S. Sussman, S. Berkman, J. Bian, N. J. Griskevich, W. R. Krop, S. Locke, S. Mine, P. Weatherly, M. B. Smy, H. W. Sobel, V. Takhistov, K. S. Ganezer, J. Hill, J. Y. Kim, I. T. Lim, R. G. Park, B. Bodur, K. Scholberg, C. W. Walter, M. Gonin, J. Imber, Th. A. Mueller, T. Ishizuka, T. Nakamura, J. S. Jang, K. Choi, J. G. Learned, S. Matsuno, R. P. Litchfield, Y. Uchida, M. O. Wascko, N. F. Calabria, M. G. Catanesi, R. A. Intonti, E. Radicioni, G. De Rosa, A. Ali, G. Collazuol, F. Iacob, L. Ludovici, S. Cao, M. Friend, T. Hasegawa, T. Ishida, T. Kobayashi, T. Nakadaira, K. Nakamura, Y. Oyama, K. Sakashita, T. Sekiguchi, T. Tsukamoto, KE. Abe, M. Hasegawa, Y. Isobe, H. Miyabe, T. Sugimoto, A. T. Suzuki, Y. Takeuchi, Y. Ashida, T. Hayashino, S. Hirota, M. Jiang, T. Kikawa, M. Mori, KE. Nakamura, T. Nakaya, R. A. Wendell, L. H. V. Anthony, N. McCauley, A. Pritchard, K. M. Tsui, Y. Fukuda, Y. Itow, M. Murrase, P. Mijakowski, K. Frankiewicz, C. K. Jung, X. Li, J. L. Palomino, G. Santucci, C. Vilela, M. J. Wilking, C. Yanagisawa, D. Fukuda, K. Hagiwara, H. Ishino, S. Ito, Y. Koshio, M. Sakuda, Y. Takahira, C. Xu, Y. Kuno, C. Simpson, D. Wark, F. Di Lodovico, B. Richards, S. Molina Sedgwick, R. Tacik, S. B. Kim, M. Thiesse, L. Thompson, H. Okazawa, Y. Choi, K. Nishijima, M. Koshiba, M. Yokoyama, A. Goldsack, K. Martens, M. Murdoch, B. Quilain, Y. Suzuki, M. R. Vagins, M. Kuze, Y. Okajima, T. Yoshida, M. Ishitsuka, J. F. Martin, C. M. Nantais, H. A. Tanaka, T. Towstego, M. Hartz, A. Konaka, P. de Perio, S. Chen, A. Minamino

    Physical Review D   99 ( 032005 )   1 - 11   2019年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/physrevd.99.032005

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    arXiv

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    その他リンク: http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevD.99.032005/fulltext

  • 等間隔共振周波数を目指した ニオブ製集中定数型力学インダクタンス検出器の設計と製作の改善 査読

    喜田 洋介, 石野 宏和, 山森 弘毅, 平山 文紀, 神代 暁, 樹林 敦子, 佐藤 伸明

    低温工学   54 ( 1 )   33 - 36   2019年1月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.2221/jcsj.54.33

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  • Measurement of the tau neutrino cross section in atmospheric neutrino oscillations with Super-Kamiokande 査読

    Li, Z, Abe, K, Bronner, C, Hayato, Y, Ikeda, M, Iyogi, K, Kameda, J, Kato, Y, Kishimoto, Y, Marti, Ll, Miura, M, Moriyama, S, Nakahata, M, Nakajima, Y, Nakano, Y, Nakayama, S, Orii, A, Pronost, G, Sekiya, H, Shiozawa, M, Sonoda, Y, Takeda, A, Takenaka, A, Tanaka, H, Tasaka, S, Tomura, T, Akutsu, R, Kajita, T, Nishimura, Y, Okumura, K, Tsui, K.M, Fernandez, P, Labarga, L, Blaszczyk, F.d. M, Gustafson, J, Kachulis, C, Kearns, E, Raaf, J.L, Stone, J.L, Sulak, L.R, Berkman, S, Tobayama, S, Elnimr, M, Kropp, W.R, Locke, S, Mine, S, Weatherly, P, Smy, M.B, Sobel, H.W, Takhistov, V, Ganezer, K.S, Hill, J, Kim, J.Y, Lim, I.T, Park, R.G, Himmel, A, O'Sullivan, E, Scholberg, K, Walter, C.W, Ishizuka, T, Nakamura, T, Jang, J.S, Choi, K, Learned, J.G, Matsuno, S, Smith, S.N, Amey, J, Litchfield, R.P, Y, W., Ma, Uchida, Y, Wascko, M.O, Cao, S, Friend, M, Hasegawa, T, Ishida, T, Ishii, T, Kobayashi, T, Nakadaira, T, Nakamura, K, Oyama, Y, Sakashita, K, Sekiguchi, T, Tsukamoto, T, Abe, KE, Hasegawa, M, Suzuki, A.T, Takeuchi, Y, Yano, T, Hayashino, T, Hiraki, T, Hirota, S, Huang, K, Jiang, M, Mori, M, Nakamura, KE, Nakaya, T, Patel, N.D, Wendell, R.A, Anthony, L.H. V, McCauley, N, Pritchard, A, Fukuda, Y, Itow, Y, Murase, M, Muto, F, Mijakowski, P, Frankiewicz, K, Jung, C.K, Li, X, Palomino, J.L, Santucci, G, Vilela, C, Wilking, M.J, Yanagisawa, C, Yang, G, Ito, S, Fukuda, D, Ishino, H, Kibayashi, A, Koshio, Y, Nagata, H, Sakuda, M, Xu, C, Kuno, Y, Wark, D, Di Lodovico, F, Richards, B, Sedgwick, S.M, Tacik, R, Kim, S, B, Cole, A, Thompson, L, Okazawa, H, Choi, Y, Ito, K, Nishijima, K, Koshiba, M, Suda, Y, Yokoyama, M, Calland, R.G, Hartz, M, Martens, K, Murdoch, M, Quilain, B, Simpson, C, Suzuki, Y, Vagins, M.R, Hamabe, D, Kuze, M, Okajima, Y, Yoshida, T, Ishitsuka, M, Martin, J.F, Nantais, C.M, Tanaka, H.A, Towstego, T, Konaka, A, Chen, S, Wan, L, Zhang, Y, Minamino, A, Wilkes, R.J

    Physical Review D   98 ( 052006 )   1 - 16   2018年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.98.052006

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  • Search for Boosted Dark Matter Interacting With Electrons in Super-Kamiokande 査読

    Kachulis, C., Abe, K., Bronner, C., Hayato, Y., Ikeda, M., Iyogi, K., Kameda, J., Kato, Y., Kishimoto, Y., Marti, Ll., Miura, M., Moriyama, S., Nakahata, M., Nakano, Y., Nakayama, S., Okajima, Y., Orii, A., Pronost, G., Sekiya, H., Shiozawa, M., Sonoda, Y., Takeda, A., Takenaka, A., Tanaka, H., Tasaka, S., Tomura, T., Akutsu, R., Kajita, T., Kaneyuki, K., Nishimura, Y., Okumura, K., Tsui, K.M., Labarga, L., Fernandez, P., Blaszczyk, F.d. M., Gustafson, J., Kearns, E., Raaf, J.L., Stone, J.L., Sulak, L.R., Berkman, S., Tobayama, S., Goldhaber, M., Elnimr, M., Kropp, W.R., Mine, S., Locke, S., Weatherly, P., Smy, M.B., Sobel, H.W., Takhistov, V., Ganezer, K.S., Hill, J., Kim, J.Y., Lim, I.T., Park, R.G., Himmel, A., Li, Z., O'Sullivan, E., Scholberg, K., Walter, C.W., Ishizuka, T., Nakamura, T., Jang, J.S., Choi, K., Learned, J.G., Matsuno, S., Smith, S.N., Amey, J., Litchfield, R.P., Y., W., Ma., Uchida, Y., Wascko, M.O., Cao, S., Friend, M., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Abe, KE., Hasegawa, M., Suzuki, A.T., Takeuchi, Y., Yano, T., Hayashino, T., Hiraki, T., Hirota, S., Huang, K., Jiang, M., Nakamura, KE., Nakaya, T., Quilain, B., Patel, N.D., Wendell, R.A., Anthony, L.H. V., McCauley, N., Pritchard, A., Fukuda, Y., Itow, Y., Murase, M., Muto, F., Mijakowski, P., Frankiewicz, K., Jung, C.K., Li, X., Palomino, J.L., Santucci, G., Vilela, C., Wilking, M.J., Yanagisawa, C., Ito, S., Fukuda, D., Ishino, H., Kibayashi, A., Koshio, Y., Nagata, H., Sakuda, M., Xu, C., Kuno, Y., Wark, D., Di Lodovico, F., Richards, B., Tacik, R., Kim, S.B., Cole, A., Thompson, L., Okazawa, H., Choi, Y., Ito, K., Nishijima, K., Koshiba, M., Totsuka, Y., Suda, Y., Yokoyama, M., Calland, R.G., Hartz, M., Martens, K., Simpson, C., Suzuki, Y., Vagins, M.R., Hamabe, D., Kuze, M., Yoshida, T., Ishitsuka, M., Martin, J.F., Nantais, C.M., Tanaka, H.A., Konaka, A., Chen, S., Wan, L., Zhang, Y., Wilkes, R.J., Minamino, A.

    Phys.Rev.Lett.   120 ( 22 )   221301 - 221301   2018年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevLett.120.221301

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  • Concept Study of Optical Configurations for High-Frequency Telescope for LiteBIRD 査読

    T. Hasebe, S. Kashima, P. A.R. Ade, Y. Akiba, D. Alonso, K. Arnold, J. Aumont, C. Baccigalupi, D. Barron, S. Basak, S. Beckman, J. Borrill, F. Boulanger, M. Bucher, E. Calabrese, Y. Chinone, H. M. Cho, A. Cukierman, D. W. Curtis, T. de Haan, M. Dobbs, A. Dominjon, T. Dotani, L. Duband, A. Ducout, J. Dunkley, J. M. Duval, T. Elleflot, H. K. Eriksen, J. Errard, J. Fischer, T. Fujino, T. Funaki, U. Fuskeland, K. Ganga, N. Goeckner-Wald, J. Grain, N. W. Halverson, T. Hamada, M. Hasegawa, K. Hattori, M. Hattori, L. Hayes, M. Hazumi, N. Hidehira, C. A. Hill, G. Hilton, J. Hubmayr, K. Ichiki, T. Iida, H. Imada, M. Inoue, Y. Inoue, K. D. Irwin, H. Ishino, O. Jeong, H. Kanai, D. Kaneko, N. Katayama, T. Kawasaki, S. A. Kernasovskiy, R. Keskitalo, A. Kibayashi, Y. Kida, K. Kimura, T. Kisner, K. Kohri, E. Komatsu, K. Komatsu, C. L. Kuo, N. A. Kurinsky, A. Kusaka, A. Lazarian, A. T. Lee, D. Li, E. Linder, B. Maffei, A. Mangilli, M. Maki, T. Matsumura, S. Matsuura, D. Meilhan, S. Mima, Y. Minami, K. Mitsuda, L. Montier, M. Nagai, T. Nagasaki, R. Nagata, M. Nakajima, S. Nakamura, T. Namikawa, M. Naruse, H. Nishino, T. Nitta, T. Noguchi, H. Ogawa, S. Oguri, N. Okada, A. Okamoto, T. Okamura, C. Otani, G. Patanchon, G. Pisano, G. Rebeiz, M. Remazeilles, P. L. Richards, S. Sakai, Y. Sakurai, Y. Sato, N. Sato, M. Sawada, Y. Segawa, Y. Sekimoto, U. Seljak, B. D. Sherwin, T. Shimizu, K. Shinozaki, R. Stompor, H. Sugai, H. Sugita, A. Suzuki, J. Suzuki, O. Tajima, S. Takada, R. Takaku, S. Takakura, S. Takatori, D. Tanabe, E. Taylor, K. L. Thompson, B. Thorne, T. Tomaru, T. Tomida, N. Tomita, M. Tristram, C. Tucker, P. Turin, M. Tsujimoto, S. Uozumi, S. Utsunomiya, Y. Uzawa, F. Vansyngel, I. K. Wehus, B. Westbrook, M. Willer, N. Whitehorn, Y. Yamada, R. Yamamoto, N. Yamasaki, T. Yamashita, M. Yoshida

    Journal of Low Temperature Physics   193 ( 5-6 )   1 - 10   2018年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Springer New York LLC  

    The high-frequency telescope for LiteBIRD is designed with refractive and reflective optics. In order to improve sensitivity, this paper suggests the new optical configurations of the HFT which have approximately 7 times larger focal planes than that of the original design. The sensitivities of both the designs are compared, and the requirement of anti-reflection (AR) coating on the lens for the refractive option is derived. We also present the simulation result of a sub-wavelength AR structure on both surfaces of silicon, which shows a band-averaged reflection of 1.1–3.2% at 101–448 GHz.

    DOI: 10.1007/s10909-018-1915-2

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  • The LiteBIRD Satellite Mission: Sub-Kelvin Instrument 査読

    A. Suzuki, P. A.R. Ade, Y. Akiba, D. Alonso, K. Arnold, J. Aumont, C. Baccigalupi, D. Barron, S. Basak, S. Beckman, J. Borrill, F. Boulanger, M. Bucher, E. Calabrese, Y. Chinone, S. Cho, B. Crill, A. Cukierman, D. W. Curtis, T. de Haan, M. Dobbs, A. Dominjon, T. Dotani, L. Duband, A. Ducout, J. Dunkley, J. M. Duval, T. Elleflot, H. K. Eriksen, J. Errard, J. Fischer, T. Fujino, T. Funaki, U. Fuskeland, K. Ganga, N. Goeckner-Wald, J. Grain, N. W. Halverson, T. Hamada, T. Hasebe, M. Hasegawa, K. Hattori, M. Hattori, L. Hayes, M. Hazumi, N. Hidehira, C. A. Hill, G. Hilton, J. Hubmayr, K. Ichiki, T. Iida, H. Imada, M. Inoue, Y. Inoue, K. D. Irwin, H. Ishino, O. Jeong, H. Kanai, D. Kaneko, S. Kashima, N. Katayama, T. Kawasaki, S. A. Kernasovskiy, R. Keskitalo, A. Kibayashi, Y. Kida, K. Kimura, T. Kisner, K. Kohri, E. Komatsu, K. Komatsu, C. L. Kuo, N. A. Kurinsky, A. Kusaka, A. Lazarian, A. T. Lee, D. Li, E. Linder, B. Maffei, A. Mangilli, M. Maki, T. Matsumura, S. Matsuura, D. Meilhan, S. Mima, Y. Minami, K. Mitsuda, L. Montier, M. Nagai, T. Nagasaki, R. Nagata, M. Nakajima, S. Nakamura, T. Namikawa, M. Naruse, H. Nishino, T. Nitta, T. Noguchi, H. Ogawa, S. Oguri, N. Okada, A. Okamoto, T. Okamura, C. Otani, G. Patanchon, G. Pisano, G. Rebeiz, M. Remazeilles, P. L. Richards, S. Sakai, Y. Sakurai, Y. Sato, N. Sato, M. Sawada, Y. Segawa, Y. Sekimoto, U. Seljak, B. D. Sherwin, T. Shimizu, K. Shinozaki, R. Stompor, H. Sugai, H. Sugita, J. Suzuki, O. Tajima, S. Takada, R. Takaku, S. Takakura, S. Takatori, D. Tanabe, E. Taylor, K. L. Thompson, B. Thorne, T. Tomaru, T. Tomida, N. Tomita, M. Tristram, C. Tucker, P. Turin, M. Tsujimoto, S. Uozumi, S. Utsunomiya, Y. Uzawa, F. Vansyngel, I. K. Wehus, B. Westbrook, M. Willer, N. Whitehorn, Y. Yamada, R. Yamamoto, N. Yamasaki, T. Yamashita, M. Yoshida

    Journal of Low Temperature Physics   193 ( 5-6 )   1 - 9   2018年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Springer New York LLC  

    Inflation is the leading theory of the first instant of the universe. Inflation, which postulates that the universe underwent a period of rapid expansion an instant after its birth, provides convincing explanation for cosmological observations. Recent advancements in detector technology have opened opportunities to explore primordial gravitational waves generated by the inflation through “B-mode” (divergent-free) polarization pattern embedded in the cosmic microwave background anisotropies. If detected, these signals would provide strong evidence for inflation, point to the correct model for inflation, and open a window to physics at ultra-high energies. LiteBIRD is a satellite mission with a goal of detecting degree-and-larger-angular-scale B-mode polarization. LiteBIRD will observe at the second Lagrange point with a 400 mm diameter telescope and 2622 detectors. It will survey the entire sky with 15 frequency bands from 40 to 400 GHz to measure and subtract foregrounds. The US LiteBIRD team is proposing to deliver sub-Kelvin instruments that include detectors and readout electronics. A lenslet-coupled sinuous antenna array will cover low-frequency bands (40–235 GHz) with four frequency arrangements of trichroic pixels. An orthomode-transducer-coupled corrugated horn array will cover high-frequency bands (280–402 GHz) with three types of single frequency detectors. The detectors will be made with transition edge sensor (TES) bolometers cooled to a 100 milli-Kelvin base temperature by an adiabatic demagnetization refrigerator. The TES bolometers will be read out using digital frequency multiplexing with Superconducting QUantum Interference Device (SQUID) amplifiers. Up to 78 bolometers will be multiplexed with a single SQUID amplifier. We report on the sub-Kelvin instrument design and ongoing developments for the LiteBIRD mission.

    DOI: 10.1007/s10909-018-1947-7

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  • Frequency-Domain Multiplexing Readout with a Self-Trigger System for Pulse Signals from Kinetic Inductance Detectors 査読

    Y. Yamada, H. Ishino, A. Kibayashi, Y. Kida, N. Hidehira, K. Komatsu, M. Hazumi, N. Sato, K. Sakai, H. Yamamori, F. Hirayama, S. Kohjiro

    Journal of Low Temperature Physics   193 ( 3-4 )   1 - 7   2018年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Springer New York LLC  

    We present the development of a frequency-domain multiplexing readout of kinetic inductance detectors (KIDs) for pulse signals with a self-trigger system. The KIDs consist of an array of superconducting resonators that have different resonant frequencies individually, allowing us to read out multiple channels in the frequency domain with a single wire using a microwave-frequency comb. The energy deposited to the resonators break Cooper pairs, changing the kinetic inductance and, hence, the amplitude and the phase of the probing microwaves. For some applications such as X-ray detections, the deposited energy is detected as a pulse signal shaped by the time constants of the quasiparticle lifetime, the resonator quality factor, and the ballistic phonon lifetime in the substrate, ranging from microseconds to milliseconds. A readout system commonly used converts the frequency-domain data to the time-domain data. For the short pulse signals, the data rate may exceed the data transfer bandwidth, as the short time constant pulses require us to have a high sampling rate. In order to overcome this circumstance, we have developed a KID readout system that contains a self-trigger system to extract relevant signal data and reduces the total data rate with a commercial off-the-shelf FPGA board. We have demonstrated that the system can read out pulse signals of 15 resonators simultaneously with about 10 Hz event rate by irradiating (Formula presented.) particles from (Formula presented.)Am to the silicon substrate on whose surface aluminum KID resonators are formed.

    DOI: 10.1007/s10909-018-1911-6

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  • Search for Neutrinos in Super-Kamiokande Associated with the GW170817 Neutron-star Merger 査読

    Hayato, Y., Ikeda, M., Iyogi, K., Kameda, J., Kato, Y., Kishimoto, Y., Marti, Ll., Miura, M., Moriyama, S., Nakahata, M., Nakajima, Y., Nakano, Y., Nakayama, S., Orii, A., Pronost, G., Sekiya, H., Shiozawa, M., Sonoda, Y., Takeda, A., Takenaka, A., Tanaka, H., Tasaka, S., Yano, T., Akutsu, R., Kajita, T., Nishimura, Y., Okumura, K., Tsui, K.M., Labarga, L., Fernandez, P., Blaszczyk, F.d.M., Kachulis, C., Kearns, E., Raaf, J.L., Stone, J.L., Sulak, L.R., Berkman, S., Tobayama, S., Bian, J., Elnimr, M., Kropp, W.R., Locke, S., Mine, S., Weatherly, P., Smy, M.B., Sobel, H.W., Takhistov, V., Ganezer, K.S., Hill, J., Kim, J.Y., Lim, I.T., Park, R.G., Li, Z., O'Sullivan, E., Scholberg, K., Walter, C.W., Gonin, M., Imber, J., Mueller, Th.A., Ishizuka, T., Nakamura, T., Jang, J.S., Choi, K., Learned, J.G., Matsuno, S., Amey, J., Litchfield, R.P., Ma, W.Y., Uchida, Y., Wascko, M.O., Catanesi, M.G., Intonti, R.A., Radicioni, E., De Rosa, G., Ali, A., Collazuol, G., Ludovici, L., Cao, S., Friend, M., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Abe, KE., Hasegawa, M., Suzuki, A.T., Takeuchi, Y., Hayashino, T., Hirota, S., Jiang, M., Mori, M., Nakamura, KE., Nakaya, T., Wendell, R.A., Anthony, L.H.V., McCauley, N., Pritchard, A., Fukuda, Y., Itow, Y., Murase, M., Muto, F., Mijakowski, P., Frankiewicz, K., Jung, C.K., Li, X., Palomino, J.L., Santucci, G., Viela, C., Wilking, M.J., Yanagisawa, C., Fukuda, D., Ishino, H., Ito, S., Kibayashi, A., Koshio, Y., Nagata, H., Sakuda, M., Xu, C., Kuno, Y., Wark, D., Di Lodovico, F., Richards, B., Molina Sedgwick, S., Tacik, R., Kim, S.B., Cole, A., Thompson, L., Okazawa, H., Choi, Y., Ito, K., Nishijima, K., Koshiba, M., Suda, Y., Yokoyama, M., Calland, R.G., Hartz, M., Martens, K., Murdoch, M., Quilain, B., Simpson, C., Suzuki, Y., Vagins, M.R., Hamabe, D., Kuze, M., Okajima, Y., Yoshida, T., Ishitsuka, M., Martin, J.F., Nantais, C.M., Tanaka, H.A., Towstego, T., Konaka, A., Chen, S., Wan, L., Minamino, A.

    Astrophys.J.   857 ( 1 )   1 - 6   2018年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.3847/2041-8213/aabaca

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  • Atmospheric neutrino oscillation analysis with external constraints in Super-Kamiokande I-IV 査読

    Abe, K., Bronner, C., Haga, Y., Hayato, Y., Ikeda, M., Iyogi, K., Kameda, J., Kato, Y., Kishimoto, Y., Marti, Ll., Miura, M., Moriyama, S., Nakahata, M., Nakajima, T., Nakano, Y., Nakayama, S., Okajima, Y., Orii, A., Pronost, G., Sekiya, H., Shiozawa, M., Sonoda, Y., Takeda, A., Takenaka, A., Tanaka, H., Tasaka, S., Tomura, T., Akutsu, R., Irvine, T., Kajita, T., Kametani, I., Kaneyuki, K., Nishimura, Y., Okumura, K., Richard, E., Tsui, K.M., Labarga, L., Fernandez, P., Blaszczyk, F.d. M., Gustafson, J., Kachulis, C., Kearns, E., Raaf, J.L., Stone, J.L., Sulak, L.R., Berkman, S., Tobayama, S., Goldhaber, M., Carminati, G., Elnimr, M., Kropp, W.R., Mine, S., Locke, S., Renshaw, A., Smy, M.B., Sobel, H.W., Takhistov, V., Weatherly, P., Ganezer, K.S., Hartfiel, B.L., Hill, J., Hong, N., Kim, J.Y., Lim, I.T., Park, R.G., Akiri, T., Himmel, A., Li, Z., O'Sullivan, E., Scholberg, K., Walter, C.W., Wongjirad, T., Ishizuka, T., Nakamura, T., Jang, J.S., Choi, K., Learned, J.G., Matsuno, S., Smith, S.N., Amey, J., Litchfield, R.P., Y., W., Ma., Uchida, Y., Wascko, M.O., Cao, S., Friend, M., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Abe, KE., Hasegawa, M., Suzuki, A.T., Takeuchi, Y., Yano, T., Hayashino, T., Hirota, S., Huang, K., Ieki, K., Jiang, M., Kikawa, T., Nakamura, KE., Nakaya, T., Patel, N.D., Suzuki, K., Takahashi, S., Wendell, R.A., Anthony, L.H. V., McCauley, N., Pritchard, A., Fukuda, Y., Itow, Y., Mitsuka, G., Murase, M., Muto, F., Suzuki, T., Mijakowski, P., Frankiewicz, K., Hignight, J., Imber, J., Jung, C.K., Li, X., Palomino, J.L., Santucci, G., Vilela, C., Wilking, M.J., Yanagisawa, C., Ito, S., Fukuda, D., Ishino, H., Kayano, T., Kibayashi, A., Koshio, Y., Mori, T., Nagata, H., Sakuda, M., Xu, C., Kuno, Y., Wark, D., Di Lodovico, F., Richards, B., Tacik, R., Kim, S.B., Cole, A., Thompson, L., Okazawa, H., Choi, Y., Ito, K., Nishijima, K., Koshiba, M., Totsuka, Y., Suda, Y., Yokoyama, M., Calland, R.G., Hartz, M., Martens, K., Quilain, B., Simpson, C., Suzuki, Y., Vagins, M.R., Hamabe, D., Kuze, M., Yoshida, T., Ishitsuka, M., Martin, J.F., Nantais, C.M., de Perio, P., Tanaka, H.A., Konaka, A., Chen, S., Wan, L., Zhang, Y., Wilkes, R.J., Minamino, A.

    Phys.Rev.D   97 ( 7 )   072001 - 072001   2018年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.97.072001

    Web of Science

    arXiv

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  • Prototype design and evaluation of the nine-layer achromatic half-wave plate for the LiteBIRD low frequency telescope

    Kunimoto Komatsu, Tomotake Matsumura, Masashi Hazumi, Hiroaki Imada, Hirokazu Ishino, Nobuhiko Katayama, Yuki Sakurai, Hajime Sugai, Ryota Takaku

    MILLIMETER, SUBMILLIMETER, AND FAR-INFRARED DETECTORS AND INSTRUMENTATION FOR ASTRONOMY IX   10708 ( 1070847 )   1 - 17   2018年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:SPIE-INT SOC OPTICAL ENGINEERING  

    LiteBIRD is a satellite project to measure the polarization of the CMB with an unprecedented accuracy. LiteBIRD observes all sky for three years at the sun-earth second Lagrange point. The goal of LiteBIRD is to observe the B-mode polarization at large angular scales and to measure the tensor-to-scaler ratio r with an accuracy less than 0.001, exploring the energy scale of the inflation. In order to mitigate the system 1/f noise and systematics, we plan to use continuous rotating half-wave plates (HWPs) as a polarization modulator at each aperture of two telescopes. One of the telescopes, called a low frequency telescope (LFT), covers the frequency range from 34 to 270 GHz, requiring the HWP to have a high modulation efficiency in the wide bandwidth. We employ a Pancharatnam-type achromatic HWP (AHWP) to achieve the broadband coverage. The AHWP consists of nine layer stacked HWPs with the optic axes mutually rotated by the angles optimized for the LFT bandwidth. In this paper, we report our development status of the nine layer AHWP and measurement results on the modulation efficiency and the phase as a function of frequency.

    DOI: 10.1117/12.2312431

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  • The optical design and physical optics analysis of a cross-Dragonian telescope for LiteBIRD

    Hiroaki Imada, Tadayasu Dotani, Takashi Hasebe, Masashi Hazumi, Junji Inatani, Hirokazu Ishino, Shingo Kashima, Nobuhiko Katayama, Kimihiro Kimura, Tomotake Matsumura, Ryo Nagata, Yutaro Sekimoto, Hajime Sugai, Aritoki Suzuki, Shin Utsunomiya

    SPACE TELESCOPES AND INSTRUMENTATION 2018: OPTICAL, INFRARED, AND MILLIMETER WAVE   10698   2018年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:SPIE-INT SOC OPTICAL ENGINEERING  

    The Lite satellite for the studies of B-mode polarization and Inflation from the cosmic microwave background (CMB) Radiation Detection (LiteBIRD) is a next generation CMB satellite dedicated to probing the inflationary universe. It has two telescopes, Low Frequency Telescope (LFT) and High Frequency Telescope (HFT) to cover wide observational bands from 34 GHz to 448 GHz. In this presentation, we report the optical design and characterization of the LFT. We have used the CODE-V to obtain the LFT optical design based on a cross-Dragonian telescope. It is an image-space telecentric system with an F number of 3.5 and 20 x 10 degrees(2) field of view. The main, near and far side lobes at far-field have been calculated by using a combination of HFSS and GRASP 10. It is revealed that the LFT telescope has good main lobe properties to satisfy the requirements. On the other hand, the side lobes are affected by the stray light that stems from the triple reflection and the direct path from feed. In order to avoid the stray light, the way to block these paths is now under study.

    DOI: 10.1117/12.2312185

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  • Prototype demonstration of the broadband anti-reflection coating on sapphire using a sub-wavelength structure

    T. Matsumura, R. Takaku, S. Hanany, H. Imada, H. Ishino, N. Katayama, Y. Kobayashi, K. Komatsu, K. Konishi, M. Kuwata-Gonokami, S. Nakamura, H. Sakurai, Y. Sakurai, Q. Wen, K. Young, J. Yumoto

    2018 29th IEEE International Symposium on Space Terahertz Technology, ISSTT 2018   54 - 60   2018年

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    掲載種別:研究論文(国際会議プロシーディングス)  

    © 2018 29th IEEE International Symposium on Space Terahertz Technology, ISSTT 2018.All Rights Reserved. We report the development of the broadband antireflection (AR) coating on sapphire using a sub-wavelength structure for a cosmic microwave background (CMB) polarization experiment. One of the challenges in the CMB polarization experiment is to disentangle the sources of the polarized emission among the CMB and the galactic emissions from our Galaxy. This leads a need of a cryogenically compatible broadband AR coating on a millimeter wave optical element used in a CMB telescope. We design and fabricate the AR subwavelength structure using a laser machining on a sapphire plate, which is a commonly used material as a half-wave plate at millimeter wavelength. We fabricate a prototype sample and evaluate the transmittance of an SWS AR sapphire for the fractional bandwidth of about 1.5. We show the agreement between the measured transmittance and the prediction based on the fabricated shape. The projected transmittance based on the measurement achieves above 90% above 50 GHz. We finally discuss the room of the improvement and the applicability for this technology for a future CMB polarization experiment.

    Scopus

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  • Current design of the electrical architecture for the payload module of LiteBIRD

    M. Tsujimoto, H. Nishino, M. Hazumi, Y. Sekimoto, T. Dotani, H. Ishino, A. Kibayashi, Y. Sakurai, T. Matsumura, M. Dobbs, J. F. Cliche, G. Smecher, A. Suzuki, A. T. Lee, K. Arnold, L. Montier, B. Mot, G. Signorelli, P. De Bernardis

    Proceedings of SPIE - The International Society for Optical Engineering   10698   2018年

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    掲載種別:研究論文(国際会議プロシーディングス)  

    © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only. LiteBIRD is a space-borne project for mapping the anisotropy of the linear polarization of the cosmic microwave background (CMB). The project aims to measure the B-mode pattern in a large angular scale to test the cosmic inflation theory. It is currently in the design phase lead by an international team of Japan, US, Canada, and Europe. We report the current status of the design of the electrical architecture of the payload module of the satellite, which is based on the heritages of other cryogenic space science missions using bolometers or microcalorimeters.

    DOI: 10.1117/12.2311579

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  • Bandpass mismatch error for satellite CMB experiments I: estimating the spurious signal 査読

    Duc Thuong Hoang, Guillaume Patanchon, Martin Bucher, Tomotake Matsumura, Ranajoy Banerji, Hirokazu Ishino, Masashi Hazumi, Jacques Delabrouille

    JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS   11 ( 11 )   1 - 26   2017年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:IOP PUBLISHING LTD  

    Future Cosmic Microwave Background (CMB) satellite missions aim to use the B mode polarization to measure the tensor-to-scalar ratio r with a sensitivity sigma(r) less than or similar to 10(-3). Achieving this goal will not only require sufficient detector array sensitivity but also unprecedented control of all systematic errors inherent to CMB polarization measurements. Since polarization measurements derive from differences between observations at different times and from different sensors, detector response mismatches introduce leakages from intensity to polarization and thus lead to a spurious B mode signal. Because the expected primordial B mode polarization signal is dwarfed by the known unpolarized intensity signal, such leakages could contribute substantially to the final error budget for measuring r. Using simulations we estimate the magnitude and angular spectrum of the spurious B mode signal resulting from bandpass mismatch between different detectors. It is assumed here that the detectors are calibrated, for example using the CMB dipole, so that their sensitivity to the primordial CMB signal has been perfectly matched. Consequently the mismatch in the frequency bandpass shape between detectors introduces difference in the relative calibration of galactic emission components. We simulate using a range of scanning patterns being considered for future satellite missions. We find that the spurious contribution to r from reionization bump on large angular scales (l < 10) is approximate to 107 assuming large detector arrays and 20 percent of the sky masked. We show how the amplitude of the leakage depends on the angular coverage per pixels that results from the scan pattern.

    DOI: 10.1088/1475-7516/2017/12/015

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  • Search for an Excess of Events in the Super-Kamiokande Detector in the Directions of the Astrophysical Neutrinos Reported by the IceCube Collaboration 査読

    K. Abe e, l, Super-Kamiokande Collaboration

    ASTROPHYSICAL JOURNAL   850 ( 2 )   1 - 7   2017年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.3847/1538-4357/aa951b

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    その他リンク: http://stacks.iop.org/0004-637X/850/i=2/a=166?key=crossref.c64db4937abe8276009dfe862bde6fe0

  • Search for nucleon decay into charged antilepton plus meson in 0.316 megaton$\cdot$years exposure of the Super-Kamiokande water Cherenkov detector 査読

    Abe, K., Hayato, Y., Ikeda, M., Iyogi, K., Kameda, J., Kishimoto, Y., Marti, Ll., Miura, M., Moriyama, S., Nakahata, M., Nakayama, S., Okajima, Y., Orii, A., Sekiya, H., Shiozawa, M., Sonoda, Y., Takeda, A., Tanaka, H., Tasaka, S., Tomura, T., Akutsu, R., Kajita, T., Kaneyuki, K., Nishimura, Y., Okumura, K., Tsui, K.M., Labarga, L., Fernandez, P., Blaszczyk, F.d.M., Gustafson, J., Kachulis, C., Kearns, E., Raaf, J.L., Stone, J.L., Sulak, L.R., Berkman, S., Tobayama, S., Goldhaber, M., Elnimr, M., Kropp, W.R., Mine, S., Locke, S., Weatherly, P., Smy, M.B., Sobel, H.W., Takhistov, V., Ganezer, K.S., Hill, J., Kim, J.Y., Lim, I.T., Park, R.G., Himmel, A., Li, Z., O'Sullivan, E., Scholberg, K., Walter, C.W., Ishizuka, T., Nakamura, T., Jang, J.S., Choi, K., Learned, J.G., Matsuno, S., Smith, S.N., Friend, M., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Nakano, Y., Suzuki, A.T., Takeuchi, Y., Yano, T., Cao, S.V., Hayashino, T., Hiraki, T., Hirota, S., Huang, K., Jiang, M., Minamino, A., Nakaya, T., Quilain, B., Patel, N.D., Wendell, R.A., Fukuda, Y., Itow, Y., Muto, F., Mijakowski, P., Frankiewicz, K., Jung, C.K., Li, X., Palomino, J.L., Santucci, G., Vilela, C., Wilking, M.J., Yanagisawa, C., Fukuda, D., Ishino, H., Kibayashi, A., Koshio, Y., Nagata, H., Sakuda, M., Xu, C., Kuno, Y., Tacik, R., Kim, S.B., Okazawa, H., Choi, Y., Ito, K., Nishijima, K., Koshiba, M., Totsuka, Y., Suda, Y., Yokoyama, M., Bronner, C., Calland, R.G., Hartz, M., Martens, K., Suzuki, Y., Vagins, M.R., Martin, J.F., Nantais, C.M., Tanaka, H.A., Konaka, A., Chen, S., Wan, L., Zhang, Y., Wilkes, R.J.

    Phys.Rev.D   96 ( 1 )   012003 - 012003   2017年7月

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.96.012003

    arXiv

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  • Development of an Optical Coupling with Ground-Side Absorption for Antenna-Coupled Kinetic Inductance Detectors 査読

    Hiroki Watanabe, Satoru Mima, Shugo Oguri, Mitsuhiro Yoshida, Masashi Hazumi, Hirokazu Ishino, Hikaru Ishitsuka, Atsuko Kibayashi, Chiko Otani, Nobuaki Sato, Osamu Tajima, Nozomu Tomita

    IEICE TRANSACTIONS ON ELECTRONICS   E100C ( 3 )   298 - 304   2017年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG  

    Antenna-coupled kinetic inductance detectors (KIDs) have recently shown great promise as microwave detection systems with a large number of channels. However, this technique, still has difficulties in eliminating the radiation loss of the resonator signals. To solve this problem, we propose a design in which the absorption area connected to an antenna is located on the ground-side of a coplanar waveguide. Thereby, radiation loss due to leakage from the resonator to the antenna can be considerably reduced. This simple design also enables the use of a contact aligner for fabrication. We have developed KIDs with this design, named as the ground-side absorption (GSA)-KIDs and demonstrated that they have higher quality factors than those of the existing KIDs, while maintaining a good total sensitivity.

    DOI: 10.1587/transele.E100.C.298

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  • Development of an Optical Coupling with Ground-Side Absorption for Antenna-Coupled Kinetic Inductance Detectors 査読

    WATANABE Hiroki, SATO Nobuaki, TAJIMA Osamu, TOMITA Nozomu, MIMA Satoru, OGURI Shugo, YOSHIDA Mitsuhiro, HAZUMI Masashi, ISHINO Hirokazu, ISHITSUKA Hikaru, KIBAYASHI Atsuko, OTANI Chiko

    IEICE Transactions on Electronics   100 ( 3 )   298 - 304   2017年

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    記述言語:英語   出版者・発行元:一般社団法人 電子情報通信学会  

    <p>Antenna-coupled kinetic inductance detectors (KIDs) have recently shown great promise as microwave detection systems with a large number of channels. However, this technique, still has difficulties in eliminating the radiation loss of the resonator signals. To solve this problem, we propose a design in which the absorption area connected to an antenna is located on the ground-side of a coplanar waveguide. Thereby, radiation loss due to leakage from the resonator to the antenna can be considerably reduced. This simple design also enables the use of a contact aligner for fabrication. We have developed KIDs with this design, named as the ground-side absorption (GSA)-KIDs and demonstrated that they have higher quality factors than those of the existing KIDs, while maintaining a good total sensitivity.</p>

    DOI: 10.1587/transele.E100.C.298

    CiNii Article

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  • SEARCH for NEUTRINOS in SUPER-KAMIOKANDE ASSOCIATED with GRAVITATIONAL-WAVE EVENTS GW150914 and GW151226 査読

    K. Abe, K. Haga, Y. Hayato, M. Ikeda, K. Iyogi, J. Kameda, Y. Kishimoto, M. Miura, S. Moriyama, M, Nakahata,T, Nakajima, Y. Nakano, S. Nakayama, A. Orii, H. Sekiya, M. Shiozawa, A. Takeda, H. Tanaka, S. Tasaka, T. Tomura, R. Akutsu, T. Kajita, K. Kaneyuki, Y. Nishimura,E. Rich

    Astrophysical Journal Letters   830 ( 1 )   1 - 6   2016年10月

  • Solar Neutrino Measurements in Super-Kamiokande-IV 査読

    Abe, K., Haga, Y., Hayato, Y., Ikeda, M., Iyogi, K., Kameda, J., Kishimoto, Y., Marti, Ll., Miura, M., Moriyama, S., Nakahata, M., Nakajima, T., Nakayama, S., Orii, A., Sekiya, H., Shiozawa, M., Sonoda, Y., Takeda, A., Tanaka, H., Takenaga, Y., Tasaka, S., Tomura, T., Ueno, K., Yokozawa, T., Akutsu, R., Irvine, T., Kaji, H., Kajita, T., Kametani, I., Kaneyuki, K., Lee, K.P., Nishimura, Y., McLachlan, T., Okumura, K., Richard, E., Labarga, L., Fernandez, P., Blaszczyk, F.d.M., Gustafson, J., Kachulis, C., Kearns, E., Raaf, J.L., Stone, J.L., Sulak, L.R., Berkman, S., Tobayama, S., Goldhaber, M., Bays, K., Carminati, G., Griskevich, N.J., Kropp, W.R., Mine, S., Renshaw, A., Smy, M.B., Sobel, H.W., Takhistov, V., Weatherly, P., Ganezer, K.S., Hartfiel, B.L., Hill, J., Keig, W.E., Hong, N., Kim, J.Y., Lim, I.T., Park, R.G., Akiri, T., Albert, J.B., Himmel, A., Li, Z., O'Sullivan, E., Scholberg, K., Walter, C.W., Wongjirad, T., Ishizuka, T., Nakamura, T., Jang, J.S., Choi, K., Learned, J.G., Matsuno, S., Smith, S.N., Friend, M., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nishikawa, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Nakano, Y., Suzuki, A.T., Takeuchi, Y., Yano, T., Cao, S.V., Hayashino, T., Hiraki, T., Hirota, S., Huang, K., Ieki, K., Jiang, M., Kikawa, T., Minamino, A., Murakami, A., Nakaya, T., Patel, N.D., Suzuki, K., Takahashi, S., Wendell, R.A., Fukuda, Y., Itow, Y., Mitsuka, G., Muto, F., Suzuki, T., Mijakowski, P., Frankiewicz, K., Hignight, J., Imber, J., Jung, C.K., Li, X., Palomino, J.L., Santucci, G., Taylor, I., Vilela, C., Wilking, M.J., Yanagisawa, C., Fukuda, D., Ishino, H., Kayano, T., Kibayashi, A., Koshio, Y., Mori, T., Sakuda, M., Takeuchi, J., Yamaguchi, R., Kuno, Y., Tacik, R., Kim, S.B., Okazawa, H., Choi, Y., Ito, K., Nishijima, K., Koshiba, M., Totsuka, Y., Suda, Y., Yokoyama, M., Bronner, C., Calland, R.G., Hartz, M., Martens, K., Obayashi, Y., Suzuki, Y., Vagins, M.R., Nantais, C.M., Martin, J.F., de Perio, P., Tanaka, H.A., Konaka, A., Chen, S., Sui, H., Wan, L., Yang, Z., Zhang, H., Zhang, Y., Connolly, K., Dziomba, M., Wilkes, R.J.

    Phys.Rev.D   94 ( 5 )   052010 - 052010   2016年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.94.052010

    arXiv

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  • Measurements of the atmospheric neutrino flux by Super-Kamiokande: energy spectra, geomagnetic effects, and solar modulation 査読

    Richard, E., Okumura, K., Abe, K., Haga, Y., Hayato, Y., Ikeda, M., Iyogi, K., Kameda, J., Kishimoto, Y., Miura, M., Moriyama, S., Nakahata, M., Nakajima, T., Nakano, Y., Nakayama, S., Orii, A., Sekiya, H., Shiozawa, M., Takeda, A., H. A. Tanaka, Tomura, T., Wendell, R.A., Akutsu, R., Irvine, T., Kajita, T., Kaneyuki, K., Nishimura, Y., Luis Labarga, Fernandez, P., Gustafson, J., Kachulis, C., Kearns, E., Raaf, J.L., Stone, J.L., Sulak, L.R., Berkman, S., Nantais, C.M., H. A. Tanaka, Tobayama, S., Goldhaber, M., Kropp, W.R., Mine, S., Weatherly, P., Smy, M.B., Sobel, H.W., Takhistov, V., Ganezer, K.S., Hartfiel, B.L., Hill, J., Hong, N., Kim, J.Y., Lim, I.T., Park, R.G., Alexander Himmel, Li, Z., O'Sullivan, E., Scholberg, K., Walter, C.W., Wongjirad, T., Ishizuka, T., Tasaka, S., Jang, J.S., Learned, J.G., Matsuno, S., Smith, S.N., Friend, M., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Suzuki, A.T., Takeuchi, Y., Yano, T., Cao, S.V., Hiraki, T., Hirota, S., Huang, K., Kikawa, T., Minamino, A., Nakaya, T., Suzuki, K., Fukuda, Y., Choi, K., Itow, Y., Suzuki, T., Mijakowski, P., Frankiewicz, K., Hignight, J., Imber, J., Jung, C.K., Li, X., Palomino, J.L., Wilking, M.J., Yanagisawa, C., Fukuda, D., Ishino, H., Kayano, T., Kibayashi, A., Koshio, Y., Mori, T., Sakuda, M., Xu, C., Kuno, Y., Tacik, R., Kim, S.B., Okazawa, H., Choi, Y., Nishijima, K., Koshiba, M., Totsuka, Y., Suda, Y., Masashi Yokoyama, Bronner, C., Hartz, M., Martens, K., Marti, Ll., Suzuki, Y., Vagins, M.R., Martin, J.F., Konaka, A., Chen, S., Yang Zhang, Wilkes, R.J.

    Phys.Rev.D   94 ( 5 )   052001 - 052001   2016年9月

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.94.052001

    arXiv

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  • Measurements of the atmospheric neutrino flux by Super-Kamiokande: Energy spectra, geomagnetic effects, and solar modulation 査読

    E. Richard, K. Okumura, K. Abe, Y. Haga, Y. Hayato, M. Ikeda, K. Iyogi, J. Kameda, Y. Kishimoto, M. Miura, S. Moriyama, M. Nakahata, T. Nakajima, Y. Nakano, S. Nakayama, A. Orii, H. Sekiya, M. Shiozawa, A. Takeda, H. Tanaka, T. Tomura, R. A. Wendell, R. Akutsu, T. Irvine, T. Kajita, K. Kaneyuki, Y. Nishimura, L. Labarga, P. Fernandez, J. Gustafson, C. Kachulis, E. Kearns, J. L. Raaf, J. L. Stone, L. R. Sulak, S. Berkman, C. M. Nantais, H. A. Tanaka, S. Tobayama, M. Goldhaber, W. R. Kropp, S. Mine, P. Weatherly, M. B. Smy, H. W. Sobel, V. Takhistov, K. S. Ganezer, B. L. Hartfiel, J. Hill, N. Hong, J. Y. Kim, I. T. Lim, R. G. Park, A. Himmel, Z. Li, E. O'Sullivan, K. Scholberg, C. W. Walter, T. Wongjirad, T. Ishizuka, S. Tasaka, J. S. Jang, J. G. Learned, S. Matsuno, S. N. Smith, M. Friend, T. Hasegawa, T. Ishida, T. Ishii, T. Kobayashi, T. Nakadaira, K. Nakamura, Y. Oyama, K. Sakashita, T. Sekiguchi, T. Tsukamoto, A. T. Suzuki, Y. Takeuchi, T. Yano, S. V. Cao, T. Hiraki, S. Hirota, K. Huang, T. Kikawa, A. Minamino, T. Nakaya, K. Suzuki, Y. Fukuda, K. Choi, Y. Itow, T. Suzuki, P. Mijakowski, K. Frankiewicz, J. Hignight, J. Imber, C. K. Jung, X. Li, J. L. Palomino, M. J. Wilking, C. Yanagisawa, D. Fukuda, H. Ishino, T. Kayano, A. Kibayashi, Y. Koshio, T. Mori, M. Sakuda, C. Xu, Y. Kuno, R. Tacik, S. B. Kim, H. Okazawa, Y. Choi, K. Nishijima, M. Koshiba, Y. Totsuka, Y. Suda, M. Yokoyama, C. Bronner, M. Hartz, K. Martens, Ll. Marti, Y. Suzuki, M. R. Vagins, J. F. Martin, A. Konaka, S. Chen, Y. Zhang, R. J. Wilkes

    PHYSICAL REVIEW D   94 ( 5 )   1 - 31   2016年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    A comprehensive study of the atmospheric neutrino flux in the energy region from sub-GeV up to several TeV using the Super-Kamiokande (SK) water Cherenkov detector is presented in this paper. The energy and azimuthal spectra, and variation over time, of the atmospheric nu(e) + (nu) over bar (e) and nu(mu) + (nu) over bar (mu) fluxes are measured. The energy spectra are obtained using an iterative unfolding method by combining various event topologies with differing energy responses. The azimuthal spectra depending on energy and zenith angle, and their modulation by geomagnetic effects, are also studied. A predicted east-west asymmetry is observed in both the nu(e) and nu(mu) samples at 8.0 sigma and 6.0 sigma significance, respectively, and an indication that the asymmetry dipole angle changes depending on the zenith angle was seen at the 2.2 sigma level. The measured energy and azimuthal spectra are consistent with the current flux models within the estimated systematic uncertainties. A study of the long-term correlation between the atmospheric neutrino flux and the solar magnetic activity cycle is performed, and a weak preference for a correlation was seen at the 1.1 sigma level, using SK-I-SK-IV data spanning a 20-year period. For several particularly strong solar activity periods, corresponding to Forbush decrease events, no theoretical prediction is available but a deviation below the typical neutrino event rate is seen at the 2.4 sigma level. The seasonal modulation of the neutrino flux is also examined, but the change in flux at the SK site is predicted to be negligible, and, as expected, no evidence for a seasonal correlation is seen.

    DOI: 10.1103/PhysRevD.94.052001

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  • Radiation Tolerance of Aluminum Microwave Kinetic Inductance Detector 査読

    K. Karatsu, A. Dominjon, T. Fujino, T. Funaki, M. Hazumi, F. Irie, H. Ishino, Y. Kida, T. Matsumura, K. Mizukami, M. Naruse, T. Nitta, T. Noguchi, N. Oka, S. Sekiguchi, Y. Sekimoto, M. Sekine, S. Shu, Y. Yamada, T. Yamashita

    JOURNAL OF LOW TEMPERATURE PHYSICS   184 ( 3-4 )   540 - 546   2016年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:SPRINGER/PLENUM PUBLISHERS  

    Microwave kinetic inductance detector (MKID) is one of the candidates of focal plane detector for future satellite missions such as LiteBIRD. For the space use of MKIDs, the radiation tolerance is one of the challenges to be characterized prior to the launch. Aluminum (Al) MKIDs with 50 nm thickness on silicon substrate and on sapphire substrate were irradiated with a proton beam of 160 MeV at the heavy ion medical accelerator in Chiba. The total water-equivalent absorbed dose was 10 krad which should simulate the worst radiation absorption of 5 years observation at the Lagrange point L2. We measured characteristics of these MKIDs before and after the irradiation. We found no significant changes on resonator quality factor, responsivity, and recombination time of quasi-particles. The change on electrical noise equivalent power was also evaluated, and no significant increase was found at the noise level of W/root Hz.

    DOI: 10.1007/s10909-016-1523-y

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  • LiteBIRD: Mission Overview and Focal Plane Layout 査読

    T. Matsumura, Y. Akiba, K. Arnold, J. Borrill, R. Chendra, Y. Chinone, A. Cukierman, T. de Haan, M. Dobbs, A. Dominjon, T. Elleflot, J. Errard, T. Fujino, H. Fuke, N. Goeckner-wald, N. Halverson, P. Harvey, M. Hasegawa, K. Hattori, M. Hattori, M. Hazumi, C. Hill, G. Hilton, W. Holzapfel, Y. Hori, J. Hubmayr, K. Ichiki, J. Inatani, M. Inoue, Y. Inoue, F. Irie, K. Irwin, H. Ishino, H. Ishitsuka, O. Jeong, K. Karatsu, S. Kashima, N. Katayama, I. Kawano, B. Keating, A. Kibayashi, Y. Kibe, Y. Kida, K. Kimura, N. Kimura, K. Kohri, E. Komatsu, C. L. Kuo, S. Kuromiya, A. Kusaka, A. Lee, E. Linder, H. Matsuhara, S. Matsuoka, S. Matsuura, S. Mima, K. Mitsuda, K. Mizukami, H. Morii, T. Morishima, M. Nagai, T. Nagasaki, R. Nagata, M. Nakajima, S. Nakamura, T. Namikawa, M. Naruse, K. Natsume, T. Nishibori, K. Nishijo, H. Nishino, T. Nitta, A. Noda, T. Noguchi, H. Ogawa, S. Oguri, I. S. Ohta, C. Otani, N. Okada, A. Okamoto, A. Okamoto, T. Okamura, G. Rebeiz, P. Richards, S. Sakai, N. Sato, Y. Sato, Y. Segawa, S. Sekiguchi, Y. Sekimoto, M. Sekine, U. Seljak, B. Sherwin, K. Shinozaki, S. Shu, R. Stompor, H. Sugai, H. Sugita, T. Suzuki, A. Suzuki, O. Tajima, S. Takada, S. Takakura, K. Takano, Y. Takei, T. Tomaru, N. Tomita, P. Turin, S. Utsunomiya, Y. Uzawa, T. Wada, H. Watanabe, B. Westbrook, N. Whitehorn, Y. Yamada, N. Yamasaki, T. Yamashita, M. Yoshida, T. Yoshida, Y. Yotsumoto

    JOURNAL OF LOW TEMPERATURE PHYSICS   184 ( 3-4 )   824 - 831   2016年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:SPRINGER/PLENUM PUBLISHERS  

    LiteBIRD is a proposed CMB polarization satellite project to probe the inflationary B-mode signal. The satellite is designed to measure the tensor-to-scalar ratio with a 68 % confidence level uncertainty of , including statistical, instrumental systematic, and foreground uncertainties. LiteBIRD will observe the full sky from the second Lagrange point for 3 years. We have a focal plane layout for observing frequency coverage that spans 40-402 GHz to characterize the galactic foregrounds. We have two detector candidates, transition-edge sensor bolometers and microwave kinetic inductance detectors. In both cases, a telecentric focal plane consists of approximately superconducting detectors. We will present the mission overview of LiteBIRD, the project status, and the TES focal plane layout.

    DOI: 10.1007/s10909-016-1542-8

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  • Real-Time Supernova Neutrino Burst Monitor at Super-Kamiokande 査読

    Abe, K., Haga, Y., Hayato, Y., Ikeda, M., Iyogi, K., Kameda, J., Kishimoto, Y., Miura, M., Moriyama, S., Nakahata, M., Nakano, Y., Nakayama, S., Sekiya, H., Shiozawa, M., Suzuki, Y., Takeda, A., Tanaka, H., Tomura, T., Ueno, K., Wendell, R.A., Yokozawa, T., Irvine, T., Kajita, T., Kametani, I., Kaneyuki, K., Lee, K.P., McLachlan, T., Nishimura, Y., Richard, E., Okumura, K., Luis Labarga, Fernandez, P., Berkman, S., H. A. Tanaka, Tobayama, S., Gustafson, J., Kearns, E., Raaf, J.L., Stone, J.L., Sulak, L.R., Goldhaber, M., Carminati, G., Kropp, W.R., Mine, S., Weatherly, P., Renshaw, A., Smy, M.B., Sobel, H.W., Takhistov, V., Ganezer, K.S., Hartfiel, B.L., Hill, J., Keig, W.E., Hong, N., Kim, J.Y., Lim, I.T., Akiri, T., Alexander Himmel, Scholberg, K., Walter, C.W., Wongjirad, T., Ishizuka, T., Tasaka, S., Jang, J.S., Learned, J.G., Matsuno, S., Smith, S.N., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Suzuki, A.T., Takeuchi, Y., Bronner, C., Hirota, S., Huang, K., Ieki, K., Kikawa, T., Minamino, A., Murakami, A., Nakaya, T., Suzuki, K., Takahashi, S., Tateishi, K., Fukuda, Y., Choi, K., Itow, Y., Mitsuka, G., Mijakowski, P., Hignight, J., Imber, J., Jung, C.K., Yanagisawa, C., Wilking, M.J., Ishino, H., Kibayashi, A., Koshio, Y., Mori, T., Sakuda, M., Yamaguchi, R., Yano, T., Kuno, Y., Tacik, R., Kim, S.B., Okazawa, H., Choi, Y., Nishijima, K., Koshiba, M., Suda, Y., Totsuka, Y., Masashi Yokoyama, Martens, K., Marti, Ll., Vagins, M.R., Martin, J.F., de Perio, P., Konaka, A., Chen, S., Yang Zhang, Connolly, K., Wilkes, R.J.

    Astropart.Phys.   81   39 - 48   2016年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.astropartphys.2016.04.003

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    arXiv

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  • Millimeter-wave broadband antireflection coatings using laser ablation of subwavelength structures 査読

    Tomotake Matsumura, Karl Young, Qi Wen, Shaul Hanany, Hirokazu Ishino, Yuki Inoue, Masashi Hazumi, Juergen Koch, Oliver Suttman, Viktor Schuetz

    APPLIED OPTICS   55 ( 13 )   3502 - 3509   2016年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:OPTICAL SOC AMER  

    We report on the first use of laser ablation to make submillimeter, broadband, antireflection coatings (ARCs) based on subwavelength structures (SWSs) on alumina and sapphire. We used a 515 nm laser to produce pyramid-shaped structures with a pitch of about 320 mu m and a total height of near 800 mu m. Transmission measurements between 70 and 140 GHz are in agreement with simulations using electromagnetic propagation software. The simulations indicate that SWS-ARCs with the fabricated shape should have a fractional bandwidth response of Delta nu/nu(center) = 0.55 centered on 235 GHz for which reflections are below 3%. Extension of the bandwidth to both lower and higher frequencies, between a few tens of gigahertz and a few terahertz, should be straightforward with appropriate adjustment of laser ablation parameters. (C) 2016 Optical Society of America

    DOI: 10.1364/AO.55.003502

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    PubMed

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  • First measurement of radioactive isotope production through cosmic-ray muon spallation in Super-Kamiokande IV 査読

    Y. Zhang, K. Abe, Y. Haga, Y. Hayato, M. Ikeda, K. Iyogi, J. Kameda, Y. Kishimoto, M. Miura, S. Moriyama, M. Nakahata, T. Nakajima, Y. Nakano, S. Nakayama, A. Orii, H. Sekiya, M. Shiozawa, A. Takeda, H. Tanaka, T. Tomura, R. A. Wendell, T. Irvine, T. Kajita, I. Kametani, K. Kaneyuki, Y. Nishimura, E. Richard, K. Okumura, L. Labarga, P. Fernandez, J. Gustafson, C. Kachulis, E. Kearns, J. L. Raaf, J. L. Stone, L. R. Sulak, S. Berkman, C. M. Nantais, H. A. Tanaka, S. Tobayama, M. Goldhaber, G. Carminati, N. J. Griskevich, W. R. Kropp, S. Mine, A. Renshaw, M. B. Smy, H. W. Sobel, V. Takhistov, P. Weatherly, K. S. Ganezer, B. L. Hartfiel, J. Hill, N. Hong, J. Y. Kim, I. T. Lim, A. Himmel, Z. Li, K. Scholberg, C. W. Walter, T. Wongjirad, T. Ishizuka, S. Tasaka, J. S. Jang, J. G. Learned, S. Matsuno, S. N. Smith, M. Friend, T. Hasegawa, T. Ishida, T. Ishii, T. Kobayashi, T. Nakadaira, K. Nakamura, Y. Oyama, K. Sakashita, T. Sekiguchi, T. Tsukamoto, A. T. Suzuki, Y. Takeuchi, T. Yano, S. Hirota, K. Huang, K. Ieki, T. Kikawa, A. Minamino, T. Nakaya, K. Suzuki, S. Takahashi, Y. Fukuda, K. Choi, Y. Itow, T. Suzuki, P. Mijakowski, K. Frankiewicz, J. Hignight, J. Imber, C. K. Jung, X. Li, J. L. Palomino, M. J. Wilking, C. Yanagisawa, H. Ishino, T. Kayano, A. Kibayashi, Y. Koshio, T. Mori, M. Sakuda, Y. Kuno, R. Tacik, S. B. Kim, H. Okazawa, Y. Choi, K. Nishijima, M. Koshiba, Y. Suda, Y. Totsuka, M. Yokoyama, C. Bronner, M. Hartz, K. Martens, Ll. Marti, Y. Suzuki, M. R. Vagins, J. F. Martin, P. de Perio, A. Konaka, S. Chen, R. J. Wilkes

    PHYSICAL REVIEW D   93 ( 1 )   012004 - 012004   2016年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    Cosmic-ray-muon spallation-induced radioactive isotopes with beta decays are one of the major backgrounds for solar, reactor, and supernova relic neutrino experiments. Unlike in scintillator, production yields for cosmogenic backgrounds in water have not been exclusively measured before, yet they are becoming more and more important in next generation neutrino experiments designed to search for rare signals. We have analyzed the low-energy trigger data collected at Super-Kamiokande IV in order to determine the production rates of B-12, N-12, N-16, Be-11, Li-9, He-8, C-9, Li-8, B-8, and C-15. These rates were extracted from fits to time differences between parent muons and subsequent daughter beta's by fixing the known isotope lifetimes. Since 9Li can fake an inverse-beta-decay reaction chain via a beta + n cascade decay, producing an irreducible background with detected energy up to a dozen MeV, a dedicated study is needed for evaluating its impact on future measurements; the application of a neutron tagging technique using correlated triggers was found to improve this Li-9 measurement. The measured yields were generally found to be comparable with theoretical calculations, except the cases of the isotopes Li-8/B-8 and Li-9.

    DOI: 10.1103/PhysRevD.93.012004

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  • LiteBIRD

    Hirokazu Ishino

    PROCEEDINGS OF THE 12TH INTERNATIONAL SYMPOSIUM ON COSMOLOGY AND PARTICLE ASTROPHYSICS (COSPA 2015)   43   1 - 8   2016年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:WORLD SCIENTIFIC PUBL CO PTE LTD  

    We present LiteBIRD, a satellite project dedicated for the detection of the CMB B-mode polarization. The purpose of LiteBIRD is to measure the tensor-to-scalar ratio r with a precision of sigma(r) < 0.001 to test large-single-field slow-roll inflation models by scanning all the sky area for three years at the sun-earth L2 with the sensitivity of 3.2 mu K.arcmin. We report an overview and the status of the project, including the ongoing detector and systematic studies.

    DOI: 10.1142/S2010194516601927

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  • Optical Designing of LiteBIRD

    Hajime Sugai, Shingo Kashima, Kimihiro Kimura, Tomotake Matsumura, Masanori Inoue, Makoto Ito, Toshiyuki Nishibori, Yutaro Sekimoto, Hirokazu Ishino, Yuki Sakurai, Hiroaki Imada, Takenori Fujii

    SPACE TELESCOPES AND INSTRUMENTATION 2016: OPTICAL, INFRARED, AND MILLIMETER WAVE   9904   2016年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:SPIE-INT SOC OPTICAL ENGINEERING  

    LiteBIRD aims to detect the footprint of the primordial gravitational wave on the Cosmic Microwave Background (CMB) in a form of polarization pattern called B mode. In order to separate CMB from the Galactic emission, our measurements cover 35 GHz to 450 GHz. The LiteBIRD optics consists of two telescopes: a crossed Dragone type for lower frequencies, which provides a compact configuration with a wide field of view, and a refractor type for higher frequencies. The whole optical system is cooled down to around 5 K to minimize the thermal emission. We use two kinds of approaches of designing calculations as well as the experimental confirmation particularly for the lower frequency telescope.

    DOI: 10.1117/12.2232008

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  • Search for Nucleon and Dinucleon Decays with an Invisible Particle and a Charged Lepton in the Final State at the Super-Kamiokande Experiment 査読

    Takhistov, V., Abe, K., Haga, Y., Hayato, Y., Ikeda, M., Iyogi, K., Kameda, J., Kishimoto, Y., Miura, M., Moriyama, S., Nakahata, M., Nakajima, T., Nakano, Y., Nakayama, S., Orii, A., Sekiya, H., Shiozawa, M., Takeda, A., Tanaka, H., Tomura, T., Wendell, R.A., Irvine, T., Kajita, T., Kametani, I., Kaneyuki, K., Nishimura, Y., Richard, E., Okumura, K., Labarga, L., Fernandez, P., Gustafson, J., Kachulis, C., Kearns, E., Raaf, J.L., Stone, J.L., Sulak, L.R., Berkman, S., Nantais, C.M., Tanaka, H.A., Tobayama, S., Goldhaber, M., Carminati, G., Kropp, W.R., Mine, S., Weatherly, P., Renshaw, A., Smy, M.B., Sobel, H.W., Ganezer, K.S., Hartfiel, B.L., Hill, J., Hong, N., Kim, J.Y., Lim, I.T., Himmel, A., Li, Z., Scholberg, K., Walter, C.W., Wongjirad, T., Ishizuka, T., Tasaka, S., Jang, J.S., Learned, J.G., Matsuno, S., Smith, S.N., Friend, M., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Suzuki, A.T., Takeuchi, Y., Yano, T., Hirota, S., Huang, K., Ieki, K., Kikawa, T., Minamino, A., Nakaya, T., Suzuki, K., Takahashi, S., Fukuda, Y., Choi, K., Itow, Y., Suzuki, T., Mijakowski, P., Frankiewicz, K., Hignight, J., Imber, J., Jung, C.K., Li, X., Palomino, J.L., Wilking, M.J., Yanagisawa, C., Ishino, H., Kayano, T., Kibayashi, A., Koshio, Y., Mori, T., Sakuda, M., Kuno, Y., Tacik, R., Kim, S.B., Okazawa, H., Choi, Y., Nishijima, K., Koshiba, M., Suda, Y., Totsuka, Y., Yokoyama, M., Bronner, C., Hartz, M., Martens, K., Marti, Ll., Suzuki, Y., Vagins, M.R., Martin, J.F., de Perio, P., Konaka, A., Chen, S., Zhang, Y., Wilkes, R.J.

    Phys.Rev.Lett.   115 ( 12 )   121803 - 121803   2015年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevLett.115.121803

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    arXiv

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  • SOIKID, SOI pixel detector combined with superconducting detector KID

    H. Ishino, A. Kibayashi, Y. Kida, Y. Yamada

    arXiv:1507.01326   2015年7月

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    記述言語:英語  

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  • Search for dinucleon decay into pions at Super-Kamiokande 査読

    Gustafson, J., Abe, K., Haga, Y., Hayato, Y., Ikeda, M., Iyogi, K., Kameda, J., Kishimoto, Y., Miura, M., Moriyama, S., Nakahata, M., Nakajima, T., Nakano, Y., Nakayama, S., Orii, A., Sekiya, H., Shiozawa, M., Takeda, A., Tanaka, H., Tomura, T., Wendell, R.A., Irvine, T., Kajita, T., Kametani, I., Kaneyuki, K., Nishimura, Y., Richard, E., Okumura, K., Labarga, L., Fernandez, P., Berkman, S., Tanaka, H.A., Tobayama, S., Kearns, E., Raaf, J.L., Stone, J.L., Sulak, L.R., Goldhaber, M., Carminati, G., Kropp, W.R., Mine, S., Weatherly, P., Renshaw, A., Smy, M.B., Sobel, H.W., Takhistov, V., Ganezer, K.S., Hartfiel, B.L., Hill, J., Hong, N., Kim, J.Y., Lim, I.T., Akiri, T., Himmel, A., Scholberg, K., Walter, C.W., Wongjirad, T., Ishizuka, T., Tasaka, S., Jang, J.S., Learned, J.G., Matsuno, S., Smith, S.N., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Suzuki, A.T., Takeuchi, Y., Yano, T., Hirota, S., Huang, K., Ieki, K., Kikawa, T., Minamino, A., Nakaya, T., Suzuki, K., Takahashi, S., Fukuda, Y., Choi, K., Itow, Y., Mitsuka, G., Suzuki, T., Mijakowski, P., Hignight, J., Imber, J., Jung, C.K., Palomino, J.L., Yanagisawa, C., Ishino, H., Kayano, T., Kibayashi, A., Koshio, Y., Mori, T., Sakuda, M., Kuno, Y., Tacik, R., Kim, S.B., Okazawa, H., Choi, Y., Nishijima, K., Koshiba, M., Suda, Y., Totsuka, Y., Yokoyama, M., Bronner, C., Martens, K., Marti, Ll., Suzuki, Y., Vagins, M.R., Martin, J.F., de Perio, P., Konaka, A., Wilking, M.J., Chen, S., Zhang, Y., Wilkes, R.J.

    Phys.Rev.D   91 ( 7 )   072009 - 072009   2015年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.91.072009

    arXiv

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  • The Search for $n-\bar{n}$ oscillation in Super-Kamiokande I 査読

    Abe, K., Hayato, Y., Iida, T., Ishihara, K., Kameda, J., Koshio, Y., Minamino, A., Mitsuda, C., Miura, M., Moriyama, S., Nakahata, M., Obayashi, Y., Ogawa, H., Sekiya, H., Shiozawa, M., Suzuki, Y., Takeda, A., Takeuchi, Y., Ueshima, K., Watanabe, H., Higuchi, I., Ishihara, C., Ishitsuka, M., Kajita, T., Kaneyuki, K., Mitsuka, G., Nakayama, S., Nishino, H., Okumura, K., Saji, C., Takenaga, Y., Clark, S., Desai, S., Dufour, F., Herfurth, A., Kearns, E., Likhoded, S., Litos, M., Raaf, J. L., Stone, J.L., Sulak, L. R., Wang, W., Goldhaber, M., Casper, D., Cravens, J.P., Dunmore, J., Griskevich, J., Kropp, W.R., Liu, D.W., Mine, S., Regis, C., Smy, M. B., Sobel, H.W., Vagins, M. R., Ganezer, K. S., Hartfiel, B., Hill, J., Keig, W. E., Jang, J. S., Jeoung, I. S., Kim, J. Y., Lim, I. T., Scholberg, K., Tanimoto, N., Walter, C.W., Wendell, R., Ellsworth, R. W., Tasaka, S., Guillian, G., Learned, J. G., Matsuno, S., Messier, M.D., Ichikawa, A. K., Ishida, T., Ishii, T., Iwashita, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nishikawa, K., Nitta, K., Oyama, Y., Suzuki, A. T., Hasegawa, M., Maesaka, H., Nakaya, T., Sasaki, T., Sato, H., Tanaka, H., Yamamoto, S., Yokoyama, M., Haines, T. J., Dazeley, S., Hatakeyama, S., Svoboda, R., Sullivan, G. W., Gran, R., Habig, A., Fukuda, Y., Itow, Y., Koike, T., Jung, C. K., Kato, T., Kobayashi, K., McGrew, C., Sarrat, A., Terri, R., Yanagisawa, C., Tamura, N., Ikeda, M., Sakuda, M., Kuno, Y., Yoshida, M., Kim, S. B., Yang, B. S., Ishizuka, T., Okazawa, H., Choi, Y., Seo, H.K., Gando, Y., Hasegawa, T., Inoue, K., Ishii, H., Nishijima, K., Ishino, H., Watanabe, Y., Koshiba, M., Totsuka, Y., Chen, S., Deng, Z., Liu, Y., Kielczewska, D., Berns, H. G., Shiraishi, K. K., Thrane, E., Washburn, K., Wilkes, R.J.

    Phys.Rev.D   91 ( 072006 )   072006 - 072006   2015年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.91.072006

    Web of Science

    arXiv

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  • Search for neutrinos from annihilation of captured low-mass dark matter particles in the Sun by Super-Kamiokande 査読

    Koun Choi, Abe, K., Haga, Y., Hayato, Y., Iyogi, K., Kameda, J., Kishimoto, Y., Miura, M., Moriyama, S., Nakahata, M., Nakano, Y., Nakayama, S., Sekiya, H., Shiozawa, M., Suzuki, Y., Takeda, A., Tomura, T., Wendell, R.A., Irvine, T., Kajita, T., Kametani, I., Kaneyuki, K., Lee, K.P., Nishimura, Y., Okumura, K., McLachlan, T., Labarga, L., Kearns, E., Raaf, J.L., Stone, J.L., Sulak, L.R., Berkman, S., Tanaka, H.A., Tobayama, S., Goldhaber, M., Carminati, G., Kropp, W.R., Mine, S., Renshaw, A., Smy, M.B., Sobel, H.W., Ganezer, K.S., Hill, J., Hong, N., Kim, J.Y., Lim, I.T., Akiri, T., Himmel, A., Scholberg, K., Walter, C.W., Wongjirad, T., Ishizuka, T., Tasaka, S., Jang, J.S., Learned, J.G., Matsuno, S., Smith, S.N., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Suzuki, A.T., Takeuchi, Y., Bronner, C., Hirota, S., Huang, K., Ieki, K., Ikeda, M., Kikawa, T., Minamino, A., Nakaya, T., Suzuki, K., Takahashi, S., Fukuda, Y., Itow, Y., Mitsuka, G., Mijakowski, P., Hignight, J., Imber, J., Jung, C.K., Yanagisawa, C., Ishino, H., Kibayashi, A., Koshio, Y., Mori, T., Sakuda, M., Yano, T., Kuno, Y., Tacik, R., Kim, S.B., Okazawa, H., Choi, Y., Nishijima, K., Koshiba, M., Totsuka, Y., Yokoyama, M., Martens, K., Marti, Ll., Vagins, M.R., Martin, J.F., de Perio, P., Konaka, A., Wilking, M.J., Chen, S., Zhang, Y., Wilkes, R.J.

    Phys.Rev.Lett.   114 ( 14 )   141301 - 141301   2015年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevLett.114.141301

    DOI: 10.1038/nphys3334

    arXiv

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  • Limits on sterile neutrino mixing using atmospheric neutrinos in Super-Kamiokande 査読

    Abe, K., Haga, Y., Hayato, Y., Ikeda, M., Iyogi, K., Kameda, J., Kishimoto, Y., Miura, M., Moriyama, S., Nakahata, M., Nakano, Y., Nakayama, S., Sekiya, H., Shiozawa, M., Suzuki, Y., Takeda, A., Tanaka, H., Tomura, T., Ueno, K., Wendell, R.A., Yokozawa, T., Irvine, T., Kajita, T., Kametani, I., Kaneyuki, K., Lee, K.P., McLachlan, T., Nishimura, Y., Richard, E., Okumura, K., Labarga, L., Fernandez, P., Gustafson, J., Kearns, E., Raaf, J. L., Stone, J. L., Sulak, L. R., Berkman, S., Tanaka, H. A., Tobayama, S., Goldhaber, M., Carminati, G., Kropp, W.R., Mine, S., Weatherly, P., Renshaw, A., Smy, M.B., Sobel, H.W., Takhistov, V., Ganezer, K.S., Hartfiel, B.L., Hill, J., Keig, W.E., Hong, N., Kim, J.Y., Lim, I.T., Akiri, T., Himmel, A., Scholberg, K., Walter, C.W., Wongjirad, T., Ishizuka, T., Tasaka, S., Jang, J.S., Learned, J.G., Matsuno, S., Smith, S.N., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Suzuki, A.T., Takeuchi, Y., Bronner, C., Hirota, S., Huang, K., Ieki, K., Kikawa, T., Minamino, A., Murakami, A., Nakaya, T., Suzuki, K., Takahashi, S., Tateishi, K., Fukuda, Y., Choi, K., Itow, Y., Mitsuka, G., Mijakowski, P., Hignight, J., Imber, J., Jung, C.K., Yanagisawa, C., Ishino, H., Kibayashi, A., Koshio, Y., Mori, T., Sakuda, M., Yamaguchi, R., Yano, T., Kuno, Y., Tacik, R., Kim, S.B., Okazawa, H., Choi, Y., Nishijima, K., Koshiba, M., Suda, Y., Totsuka, Y., Yokoyama, M., Martens, K., Marti, Ll., Vagins, M.R., Martin, J.F., de Perio, P., Konaka, A., Wilking, M.J., Chen, S., Zhang, Y., Connolly, K., Wilkes, R.J.

    Phys.Rev.D   91 ( 052019 )   052019 - 052019   2015年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.91.052019

    arXiv

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  • Test of Lorentz invariance with atmospheric neutrinos 査読

    Abe, K., Haga, Y., Hayato, Y., Ikeda, M., Iyogi, K., Kameda, J., Kishimoto, Y., Miura, M., Moriyama, S., Nakahata, M., Nakano, Y., Nakayama, S., Sekiya, H., Shiozawa, M., Suzuki, Y., Takeda, A., Tanaka, H., Tomura, T., Ueno, K., Wendell, R.A., Yokozawa, T., Irvine, T., Kajita, T., Kametani, I., Kaneyuki, K., Lee, K.P., McLachlan, T., Nishimura, Y., Richard, E., Okumura, K., Labarga, L., Fernandez, P., Gustafson, J., Kearns, E., Raaf, J.L., Stone, J.L., Sulak, L.R., Berkman, S., Tanaka, H.A., Tobayama, S., Goldhaber, M., Carminati, G., Kropp, W.R., Mine, S., Weatherly, P., Renshaw, A., Smy, M.B., Sobel, H.W., Takhistov, V., Ganezer, K.S., Hartfiel, B.L., Hill, J., Keig, W.E., Hong, N., Kim, J.Y., Lim, I.T., Akiri, T., Himmel, A., Scholberg, K., Walter, C.W., Wongjirad, T., Ishizuka, T., Tasaka, S., Jang, J.S., Learned, J.G., Matsuno, S., Smith, S.N., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Suzuki, A.T., Takeuchi, Y., Bronner, C., Hirota, S., Huang, K., Ieki, K., Kikawa, T., Minamino, A., Murakami, A., Nakaya, T., Suzuki, K., Takahashi, S., Tateishi, K., Fukuda, Y., Choi, K., Itow, Y., Mitsuka, G., Mijakowski, P., Hignight, J., Imber, J., Jung, C.K., Yanagisawa, C., Ishino, H., Kibayashi, A., Koshio, Y., Mori, T., Sakuda, M., Yamaguchi, R., Yano, T., Kuno, Y., Tacik, R., Kim, S.B., Okazawa, H., Choi, Y., Nishijima, K., Koshiba, M., Suda, Y., Totsuka, Y., Yokoyama, M., Martens, K., Marti, Ll., Vagins, M.R., Martin, J.F., de Perio, P., Konaka, A., Wilking, M.J., Chen, S., Zhang, Y., Connolly, K., Wilkes, R.J.

    Phys.Rev.D   91 ( 5 )   052003 - 052003   2015年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.91.052003

    Web of Science

    arXiv

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  • Development of Microwave Kinetic Inductance Detector for Cosmological Observations 査読

    Kenichi Karatsu, Satoru Mima, Shugo Oguri, Jihoon Choi, R. M. Thushara Damayanthi, Agnes Dominjon, Noboru Furukawa, Hirokazu Ishino, Hikaru Ishitsuka, Atsuko Kibayashi, Yoshiaki Kibe, Hitoshi Kiuchi, Kensuke Koga, Masato Naruse, Tom Nitta, Takashi Noguchi, Takashi Okada, Chiko Otani, Shigeyuki Sekiguchi, Yutaro Sekimoto, Masakazu Sekine, Shibo Shu, Osamu Tajima, Kenta Takahashi, Nozomu Tomita, Hiroki Watanabe, Mitsuhiro Yoshida

    IEICE TRANSACTIONS ON ELECTRONICS   E98C ( 3 )   207 - 218   2015年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG  

    A precise measurement of Cosmic Microwave Background (CMB) provides us rich information about the universe. In particular, its asymmetric polarization patterns, B-modes, are smoking gun signature of inflationary universe. Magnitude of the B-modes is order of 10 nK. Its measurement requires a high sensitive millimeter-wave telescope with a large number of superconducting detectors on its focal plane. Microwave Kinetic Inductance Detector (MKID) is appropriate detector for this purpose. MKID camera has been developed in cooperation of National Astronomical Observatory of Japan (NAOJ), Institute of Physical and Chemical Research (RIKEN), High Energy Accelerator Research Organization (KEK), and Okayama University. Our developments of MKID include: fabrication of high-quality superconducting film; optical components for a camera use; and readout electronics. For performance evaluation of total integrated system of our MKID camera, a calibration system was also developed. The system was incorporated in a 0.1 K dilution refrigerator with modulated polarization source. These developed technologies are applicable to other types of detectors.

    DOI: 10.1587/transele.E98.C.207

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  • Supernova Relic Neutrino search with neutron tagging at Super-Kamiokande-IV

    H. Zhang, K. Abe, Y. Hayato, K. Iyogi, J. Kameda, Y. Kishimoto, M. Miura, S. Moriyama, M. Nakahata, Y. Nakano, S. Nakayama, H. Sekiya, M. Shiozawa, Y. Suzuki, A. Takeda, Y. Takenaga, T. Tomura, K. Ueno, T. Yokozawa, R. A. Wendell, H. Kaji, T. Kajita, K. Kaneyuki, K. P. Lee, Y. Nishimura, K. Okumura, T. McLachlan, L. Labarga, S. Barkman, T. S. Tanaka, S. Tobayama, E. Kearns, J. L. Raaff, J. L. Stone, L. R. Sulak, M. Goldhaber, K. Bays, G. Carminati, W. R. Kropp, S. Mine, A. Renshaw, M. B. Smy, H. W. Sobel, K. S. Ganezer, J. Hill, W. E. Keig, J. S. Jang, J. Y. Kim, I. T. Lim, T. Akiri, K. Scholberg, C. W. Walter, T. Wongjirad, T. Ishizuka, S. Tasaka, J. G. Learned, S. Matsuno, S. N. Smith, T. Hasegawa, T. Ishida, T. Ishii, T. Kobayashi, T. Nakadaira, K. Nakamura, K. Nishikawa, Y. Oyama, K. Sakashita, T. Sekiguchi, T. Tsukamoto, A. T. Suzuki, Y. Takeuchi, K. Ieki, M. Ikeda, H. Kikawa, K. Huang, A. Minamino, A. Murakami, T. Nakaya, K. Suzuki, S. Takahashi, Y. Fukuda, K. Choi, Y. Itow, G. Mitsuka, P. Mijakowski, J. Hignight, J. Imber, C. K. Jung, I. Taylor, C. Yanagisawa, H. Ishino, A. Kibayashi, Y. Koshio, T. Mori, M. Sakuda, R. Yamaguchi, T. Yano, Y. Kuno, R. Tacik, S. B. Kim, H. Okazawa, Y. Choi, K. Nishijima, M. Koshiba, Y. Totsuka, M. Yokoyama, K. Martens, Ll. Marti, M. R. Vagins, J. F. Martin, P. deperio, A. Konaka, M. J. Wilking, S. Chen, H. Sui, Z. Yang, Y. Zhang, K. Connolly, M. Dziomba, R. J. Wilkes

    ASTROPARTICLE PHYSICS   60   41 - 46   2015年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER  

    A search for Supernova Relic Neutrinos '(v) over bar (e)'s is first conducted via inverse-beta-decay by tagging neutron capture on hydrogen at Super-Kamiokande-IV. The neutron tagging efficiency is determined to be (17.74 +/- 0.04(stat). +/- 1.05(sys).)%, while the corresponding accidental background probability is (1.06 +/- 0.01(stat). +/- 0.18(sys),)%. Using 960 days of data, we obtain 13 inverse-beta-decay candidates in the range of E-(v) over bare, between 13.3 MeV and 31.3 MeV. All of the observed candidates are attributed to background. Upper limits at 90% C.L. are calculated in the absence of a signal. (C) 2014 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.astropartphys.2014.05.004

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  • Development of Microwave Kinetic Inductance Detector for Cosmological Observations 査読

    KARATSU Kenichi, KIBAYASHI Atsuko, KIBE Yoshiaki, KIUCHI Hitoshi, KOGA Kensuke, NARUSE Masato, NITTA Tom, NOGUCHI Takashi, OKADA Takashi, OTANI Chiko, SEKIGUCHI Shigeyuki, MIMA Satoru, SEKIMOTO Yutaro, SEKINE Masakazu, SHU Shibo, TAJIMA Osamu, TAKAHASHI Kenta, TOMITA Nozomu, WATANABE Hiroki, YOSHIDA Mitsuhiro, OGURI Shugo, CHOI Jihoon, M. THUSHARA DAMAYANTHI R., DOMINJON Agnes, FURUKAWA Noboru, ISHINO Hirokazu, ISHITSUKA Hikaru

    IEICE Transactions on Electronics   98 ( 3 )   207 - 218   2015年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 電子情報通信学会  

    A precise measurement of Cosmic Microwave Background (CMB) provides us rich information about the universe. In particular, its asymmetric polarization patterns, B-modes, are smoking gun signature of inflationary universe. Magnitude of the B-modes is order of 10 nK. Its measurement requires a high sensitive millimeter-wave telescope with a large number of superconducting detectors on its focal plane. Microwave Kinetic Inductance Detector (MKID) is appropriate detector for this purpose. MKID camera has been developed in cooperation of National Astronomical Observatory of Japan (NAOJ), Institute of Physical and Chemical Research (RIKEN), High Energy Accelerator Research Organization (KEK), and Okayama University. Our developments of MKID include: fabrication of high-quality superconducting film; optical components for a camera use; and readout electronics. For performance evaluation of total integrated system of our MKID camera, a calibration system was also developed. The system was incorporated in a 0.1 K dilution refrigerator with modulated polarization source. These developed technologies are applicable to other types of detectors.

    DOI: 10.1587/transele.E98.C.207

    Web of Science

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  • 21aDJ-10 Super-Kamiokande Gadolinium R&D Project : Gd添加水チェレンコフ検出器EGADSにおける検出器較正

    徐 宸原, 小汐 由介, 作田 誠, 石野 宏和, 森 俊彰, 阿久津 良介, Fernandez P., Griskevich J., Labarga L., 池田 一得, 岸本 康宏, Kropp W., Labarga L., Marti Ll., 中畑 雅行, 中野 祐樹, 織井 安里, 関谷 洋之, Smy M., Son C.V., 竹内 康雄, Vagins M., Weatherly P., 矢野 孝臣, Super-K Collabration

    日本物理学会講演概要集   70   396 - 396   2015年

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    記述言語:日本語   出版者・発行元:一般社団法人日本物理学会  

    DOI: 10.11316/jpsgaiyo.70.1.0_396

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  • The Physics of the B Factories 査読

    A. J. Bevan, B. Golob, Th. Mannel, S. Prell, B. D. Yabsley, K. Abe, H. Aihara, F. Anulli, N. Arnaud, T. Aushev, M. Beneke, J. Beringer, F. Bianchi, I. I. Bigi, M. Bona, N. Brambilla, J. Brodzicka, P. Chang, M. J. Charles, C. H. Cheng, H. -Y. Cheng, R. Chistov, P. Colangelo, J. P. Coleman, A. Drutskoy, V. P. Druzhinin, S. Eidelman, G. Eigen, A. M. Eisner, R. Faccini, K. T. Flood, P. Gambino, A. Gaz, W. Gradl, H. Hayashii, T. Higuchi, W. D. Hulsbergen, T. Hurth, T. Iijima, R. Itoh, P. D. Jackson, R. Kass, Yu. G. Kolomensky, E. Kou, P. Krizan, A. Kronfeld, S. Kumano, Y. J. Kwon, T. E. Latham, D. W. G. S. Leith, V. L. Uth, F. Martinez-Vidal, B. T. Meadows, R. Mussa, M. Nakao, S. Nishida, J. Ocariz, S. L. Olsen, P. Pakhlov, G. Pakhlova, A. Palano, A. Pich, S. Playfer, A. Poluektov, F. C. Porter, S. H. Robertson, J. M. Roney, A. Roodman, Y. Sakai, C. Schwanda, A. J. Schwartz, R. Seidl, S. J. Sekula, M. Steinhauser, K. Sumisawa, E. S. Swanson, F. Tackmann, K. Trabelsi, S. Uehara, S. Uno, R. van de Water, G. Vasseur, W. Verkerke, R. Waldi, M. Z. Wang, F. F. Wilson, J. Zupan, A. Zupanc, I. Adachi, J. Albert, Sw. Banerjee, M. Bellis, E. Ben-Haim, P. Biassoni, R. N. Cahn, C. Cartaro, J. Chauveau, C. Chen, C. C. Chiang, R. Cowan, J. Dalseno, M. Davier, C. Davies, J. C. Dingfelder, B. Echenard, D. Epifanov, B. G. Fulsom, A. M. Gabareen, J. W. Gary, R. Godang, M. T. Graham, A. Hafner, B. Hamilton, T. Hartmann, K. Hayasaka, C. Hearty, Y. Iwasaki, A. Khodjamirian, A. Kusaka, A. Kuzmin, G. D. Lafferty, A. Lazzaro, J. Li, D. Lindemann, O. Long, A. Lusiani, G. Marchiori, M. Martinelli, K. Miyabayashi, R. Mizuk, G. B. Mohanty, D. R. Muller, H. Nakazawa, P. Ongmongkolkul, S. Pacetti, F. Palombo, T. K. Pedlar, L. E. Piilonen, A. Pilloni, V. Poireau, K. Prothmann, T. Pulliam, M. Rama, B. N. Ratcliff, P. Roudeau, S. Schrenk, T. Schroeder, K. R. Schubert, C. P. Shen, B. Shwartz, A. Soffer, E. P. Solodov, A. Somov, M. Staric, S. Stracka, A. V. Telnov, K. Yu. Todyshev, T. Tsuboyama, T. Uglov, A. Vinokurova, J. J. Walsh, Y. Watanabe, E. Won, G. Wormser, D. H. Wright, S. Ye, C. C. Zhang, S. Abachi, A. Abashian, K. Abe, K. Abe, N. Abe, R. Abe, T. Abe, T. Abe, G. S. Abrams, I. Adam, K. Adamczyk, A. Adametz, T. Adye, A. Agarwal, H. Ahmed, M. Ahmed, S. Ahmed, B. S. Ahn, H. S. Ahn, I. J. R. Aitchison, K. Akai, S. Akar, M. Akatsu, M. Akemoto, R. Akhmetshin, R. Akre, M. S. Alam, J. N. Albert, R. Aleksan, J. P. Alexander, G. Alimonti, M. T. Allen, J. Allison, T. Allmendinger, J. R. G. Alsmiller, D. Altenburg, K. E. Alwyn, Q. An, J. Anderson, R. Andreassen, D. Andreotti, M. Andreotti, J. C. Andress, C. Angelini, D. Anipko, A. Anjomshoaa, P. L. Anthony, E. A. Antillon, E. Antonioli, K. Aoki, J. F. Arguin, K. Arinstein, K. Arisaka, K. Asai, M. Asai, Y. Asano, D. J. Asgeirsson, D. M. Asner, T. Aso, M. L. Aspinwall, D. Aston, H. Atmacan, B. Aubert, V. Aulchenko, R. Ayad, T. Azemoon, T. Aziz, V. Azzolini, D. E. Azzopardi, M. A. Baak, J. J. Back, S. Bagnasco, S. 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Nakajima, I. Nakamura, T. Nakamura, T. T. Nakamura, E. Nakano, H. Nakayama, J. W. Nam, S. Narita, I. Narsky, J. A. Nash, Z. Natkaniec, U. Nauenberg, M. Nayak, H. Neal, E. Nedelkovska, M. Negrini, K. Neichi, D. Nelson, S. Nelson, N. Neri, G. Nesom, S. Neubauer, D. Newman-Coburn, C. Ng, X. Nguyen, H. Nicholson, C. Niebuhr, J. Y. Nief, M. Niiyama, M. B. Nikolich, N. K. Nisar, K. Nishimura, Y. Nishio, O. Nitoh, R. Nogowski, S. Noguchi, T. Nomura, M. Nordby, Y. Nosochkov, A. Novokhatski, S. Nozaki, T. Nozaki, I. M. Nugent, C. P. O'Grady, S. W. O'Neale, F. G. O'Neill, B. Oberhof, P. J. Oddone, I. Ofte, A. Ogawa, K. Ogawa, S. Ogawa, Y. Ogawa, R. Ohkubo, K. Ohmi, Y. Ohnishi, F. Ohno, T. Ohshima, Y. Ohshima, N. Ohuchi, K. Oide, N. Oishi, T. Okabe, N. Okazaki, T. Okazaki, S. Okuno, E. O. Olaiya, A. Olivas, P. Olley, J. Olsen, S. Ono, G. Onorato, A. P. Onuchin, Y. Onuki, T. Ooba, T. J. Orimoto, T. Oshima, I. L. Osipenkov, W. Ostrowicz, C. Oswald, S. Otto, J. Oyang, A. Oyanguren, H. Ozaki, V. E. Ozcan, H. P. Paar, C. Padoan, K. Paick, H. Palka, B. Pan, Y. Pan, W. Panduro Vazquez, J. Panetta, A. I. Panova, R. S. Panvini, E. Panzenboeck, E. Paoloni, P. Paolucci, M. Pappagallo, S. Paramesvaran, C. S. Park, C. W. Park, H. Park, H. Park, H. K. Park, K. S. Park, W. Park, R. J. Parry, N. Parslow, S. Passaggio, F. C. Pastore, P. M. Patel, C. Patrignani, P. Patteri, T. Pavel, J. Pavlovich, D. J. Payne, L. S. Peak, D. R. Peimer, M. Pelizaeus, R. Pellegrini, M. Pelliccioni, C. C. Peng, J. C. Peng, K. C. Peng, T. Peng, Y. Penichot, S. Pennazzi, M. R. Pennington, R. C. Penny, A. Penzkofer, A. Perazzo, A. Perez, M. Perl, M. Pernicka, J. -P. Perroud, I. M. Peruzzi, R. Pestotnik, K. Peters, M. Peters, B. A. Petersen, T. C. Petersen, E. Petigura, S. Petrak, A. Petrella, M. Petric, A. Petzold, M. G. Pia, T. Piatenko, D. Piccolo, M. Piccolo, L. Piemontese, M. Piemontese, M. Pierini, S. Pierson, M. Pioppi, G. Piredda, M. Pivk, S. Plaszczynski, F. Polci, A. Pompili, P. Poropat, M. Posocco, C. T. Potter, R. J. L. Potter, V. Prasad, E. Prebys, E. Prencipe, J. Prendki, R. Prepost, M. Prest, M. Prim, M. Pripstein, X. Prudent, S. Pruvot, E. M. T. Puccio, M. V. Purohit, N. D. Qi, H. Quinn, J. Raaf, R. Rabberman, F. Raffaelli, G. Ragghianti, S. Rahatlou, A. M. Rahimi, R. Rahmat, A. Y. Rakitin, A. Randle-Conde, P. Rankin, I. Rashevskaya, S. Ratkovsky, G. Raven, V. Re, M. Reep, J. J. Regensburger, J. Reidy, R. Reif, B. Reisert, C. Renard, F. Renga, S. Ricciardi, J. D. Richman, J. L. Ritchie, M. Ritter, C. Rivetta, G. Rizzo, C. Roat, P. Robbe, D. A. Roberts, A. I. Robertson, E. Robutti, S. Rodier, D. M. Rodriguez, J. L. Rodriguez, R. Rodriguez, N. A. Roe, M. Roehrken, W. Roethel, J. Rolquin, L. Romanov, A. Romosan, M. T. Ronan, G. Rong, F. J. Ronga, L. Roos, N. Root, M. Rosen, E. I. Rosenberg, A. Rossi, A. Rostomyan, M. Rotondo, E. Roussot, J. Roy, M. Rozanska, Y. Rozen, Y. Rozen, A. E. Rubin, W. O. Ruddick, A. M. Ruland, K. Rybicki, A. Ryd, S. Ryu, J. Ryuko, S. Sabik, R. Sacco, M. A. Saeed, F. Safai Tehrani, H. Sagawa, H. Sahoo, S. Sahu, M. Saigo, T. Saito, S. Saitoh, K. Sakai, H. Sakamoto, H. Sakaue, M. Saleem, A. A. Salnikov, E. Salvati, F. Salvatore, A. Samuel, D. A. Sanders, P. Sanders, S. Sandilya, F. Sandrelli, W. Sands, W. R. Sands, M. Sanpei, D. Santel, L. Santelj, V. Santoro, A. Santroni, T. Sanuki, T. R. Sarangi, S. Saremi, A. Sarti, T. Sasaki, N. Sasao, M. Satapathy, Nobuhiko Sato, Noriaki Sato, Y. Sato, N. Satoyama, A. Satpathy, V. Savinov, N. Savvas, O. H. Saxton, K. Sayeed, S. F. Schaffner, T. Schalk, S. Schenk, J. R. Schieck, T. Schietinger, C. J. Schilling, R. H. Schindler, S. Schmid, R. E. Schmitz, H. Schmuecker, O. Schneider, G. Schnell, P. Sch Onmeier, K. C. Schofield, G. Schott, H. Schroeder, M. Schram, J. Schubert, J. Schuemann, J. Schultz, B. A. Schumm, M. H. Schune, U. Schwanke, H. Schwarz, J. Schwiening, R. Schwierz, R. F. Schwitters, C. Sciacca, G. Sciolla, I. J. Scott, J. Seeman, A. Seiden, R. Seitz, T. Seki, A. I. Sekiya, S. Semenov, D. Semmler, S. Sen, K. Senyo, O. Seon, V. V. Serbo, S. I. Serednyakov, B. Serfass, M. Serra, J. Serrano, Y. Settai, R. Seuster, M. E. Sevior, K. V. Shakhova, L. Shang, M. Shapkin, V. Sharma, V. Shebalin, V. G. Shelkov, B. C. Shen, D. Z. Shen, Y. T. Shen, D. J. Sherwood, T. Shibata, T. A. Shibata, H. Shibuya, T. Shidara, K. Shimada, M. Shimoyama, S. Shinomiya, J. G. Shiu, H. W. Shorthouse, L. I. Shpilinskaya, A. Sibidanov, E. Sicard, A. Sidorov, V. Sidorov, V. Siegle, M. Sigamani, M. C. Simani, M. Simard, G. Simi, F. Simon, F. Simonetto, N. B. Sinev, H. Singh, J. B. Singh, R. Sinha, S. Sitt, Yu. I. Skovpen, R. J. Sloane, P. Smerkol, A. J. S. Smith, D. Smith, D. Smith, D. Smith, D. S. Smith, J. G. Smith, A. Smol, H. L. Snoek, A. Snyder, R. Y. So, R. J. Sobie, E. Soderstrom, A. Soha, Y. S. Sohn, M. D. Sokoloff, A. Sokolov, P. Solagna, E. Solovieva, N. Soni, P. Sonnek, V. Sordini, B. Spaan, S. M. Spanier, E. Spencer, V. Speziali, M. Spitznagel, P. Spradlin, H. Staengle, R. Stamen, M. Stanek, S. Stanic, J. Stark, M. Steder, H. Steininger, M. Steinke, J. Stelzer, E. Stevanato, A. Stocchi, R. Stock, H. Stoeck, D. P. Stoker, R. Stroili, D. Strom, P. Strother, J. Strube, B. Stugu, J. Stypula, D. Su, R. Suda, R. Sugahara, A. Sugi, T. Sugimura, A. Sugiyama, S. Suitoh, M. K. Sullivan, M. Sumihama, T. Sumiyoshi, D. J. Summers, L. Sun, L. Sun, S. Sun, J. E. Sundermann, H. F. Sung, Y. Susaki, P. Sutcliffe, A. Suzuki, J. Suzuki, J. I. Suzuki, K. Suzuki, S. Suzuki, S. Y. Suzuki, J. E. Swain, S. K. Swain, S. T'Jampens, M. Tabata, K. Tackmann, H. Tajima, O. Tajima, K. Takahashi, S. Takahashi, T. Takahashi, F. Takasaki, T. Takayama, M. Takita, K. Tamai, U. Tamponi, N. Tamura, N. Tan, P. Tan, K. Tanabe, T. Tanabe, H. A. Tanaka, J. Tanaka, M. Tanaka, S. Tanaka, Y. Tanaka, K. Tanida, N. Taniguchi, P. Taras, N. Tasneem, G. Tatishvili, T. Tatomi, M. Tawada, F. Taylor, G. N. Taylor, G. P. Taylor, V. I. Telnov, L. Teodorescu, R. Ter-Antonyan, Y. Teramoto, D. Teytelman, G. Therin, Ch. Thiebaux, D. Thiessen, E. W. Thomas, J. M. Thompson, F. Thorne, X. C. Tian, M. Tibbetts, I. Tikhomirov, J. S. Tinslay, G. Tiozzo, V. Tisserand, V. Tocut, W. H. Toki, E. W. Tomassini, M. Tomoto, T. Tomura, E. Torassa, E. Torrence, S. Tosi, C. Touramanis, J. C. Toussaint, S. N. Tovey, P. P. Trapani, E. Treadwell, G. Triggiani, S. Trincaz-Duvoid, W. Trischuk, D. Troost, A. Trunov, K. L. Tsai, Y. T. Tsai, Y. Tsujita, K. Tsukada, T. Tsukamoto, J. M. Tuggle, A. Tumanov, Y. W. Tung, L. Turnbull, J. Turner, M. Turri, K. Uchida, M. Uchida, Y. Uchida, M. Ueki, K. Ueno, K. Ueno, N. Ujiie, K. A. Ulmer, Y. Unno, P. Urquijo, Y. Ushiroda, Y. Usov, M. Usseglio, Y. Usuki, U. Uwer, J. Va'vra, S. E. Vahsen, G. Vaitsas, A. Valassi, E. Vallazza, A. Vallereau, P. Vanhoefer, W. C. Van Hoek, C. Van Hulse, D. Van Winkle, G. Varner, E. W. Varnes, K. E. Varvell, G. Vasileiadis, Y. S. Velikzhanin, M. Verderi, S. Versille, K. Vervink, B. Viaud, P. B. Vidal, S. Villa, P. Villanueva-Perez, E. L. Vinograd, L. Vitale, G. M. Vitug, C. Voss, C. Voci, C. Voena, A. Volk, J. H. Von Wimmersperg-Toeller, V. Vorobyev, A. Vossen, G. Vuagnin, C. O. Vuosalo, K. Wacker, A. P. Wagner, D. L. Wagner, G. Wagner, M. N. Wagner, S. R. Wagner, D. E. Wagoner, D. Walker, W. Walkowiak, D. Wallom, C. C. Wang, C. H. Wang, J. Wang, J. G. Wang, K. Wang, L. Wang, L. L. Wang, P. Wang, P. Wang, T. J. Wang, W. F. Wang, X. L. Wang, Y. F. Wang, F. R. Wappler, M. Watanabe, A. T. Watson, J. E. Watson, N. K. Watson, M. Watt, J. H. Weatherall, M. Weaver, T. Weber, R. Wedd, J. T. Wei, A. W. Weidemann, A. J. R. Weinstein, W. A. Wenzel, C. A. West, C. G. West, T. J. West, E. White, R. M. White, J. Wicht, L. Widhalm, J. Wiechczynski, U. Wienands, L. Wilden, M. Wilder, D. C. Williams, G. Williams, J. C. Williams, K. M. Williams, M. I. Williams, S. Y. Willocq, J. R. Wilson, M. G. Wilson, R. J. Wilson, F. Winklmeier, L. O. Winstrom, M. A. Winter, W. J. Wisniewski, M. Wittgen, J. Wittlin, W. Wittmer, R. Wixted, A. Woch, B. J. Wogsland, E. Won, Q. K. Wong, B. C. Wray, A. C. Wren, D. M. Wright, C. H. Wu, J. Wu, S. L. Wu, H. W. Wulsin, S. M. Xella, Q. L. Xie, Y. Xie, Y. Xie, Z. Z. Xu, Ch. Yeche, Y. Yamada, M. Yamaga, A. Yamaguchi, H. Yamaguchi, T. Yamaki, H. Yamamoto, N. Yamamoto, R. K. Yamamoto, S. Yamamoto, T. Yamanaka, H. Yamaoka, J. Yamaoka, Y. Yamaoka, Y. Yamashita, M. Yamauchi, D. S. Yan, Y. Yan, H. Yanai, S. Yanaka, H. Yang, R. Yang, S. Yang, A. K. Yarritu, S. Yashchenko, J. Yashima, Z. Yasin, Y. Yasu, S. W. Ye, P. Yeh, J. I. Yi, K. Yi, M. Yi, Z. W. Yin, J. Ying, G. Yocky, K. Yokoyama, M. Yokoyama, T. Yokoyama, K. Yoshida, M. Yoshida, Y. Yoshimura, C. C. Young, C. X. Yu, Z. Yu, C. Z. Yuan, Y. Yuan, F. X. Yumiceva, Y. Yusa, A. N. Yushkov, H. Yuta, V. Zacek, S. B. Zain, A. Zallo, S. Zambito, D. Zander, S. L. Zang, D. Zanin, B. G. Zaslavsky, Q. L. Zeng, A. Zghiche, B. Zhang, J. Zhang, J. Zhang, L. Zhang, L. M. Zhang, S. Q. Zhang, Z. P. Zhang, H. W. Zhao, H. W. Zhao, M. Zhao, Z. G. Zhao, Y. Zheng, Y. H. Zheng, Z. P. Zheng, V. Zhilich, P. Zhou, R. Y. Zhu, Y. S. Zhu, Z. M. Zhu, V. Zhulanov, T. Ziegler, V. Ziegler, G. Zioulas, M. Zisman, M. Zito, D. Zuercher, N. Zwahlen, O. Zyukova, T. Zivko, D. Zontar

    EUROPEAN PHYSICAL JOURNAL C   74 ( 11 )   I - 898   2014年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:SPRINGER  

    DOI: 10.1140/epjc/s10052-014-3026-9

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  • Search for proton decay via $p\to\nuνK^+$ using 260 kiloton·year data of Super-Kamiokande 査読

    Abe, K., Hayato, Y., Iyogi, K., Kameda, J., Miura, M., Moriyama, S., Nakahata, M., Nakayama, S., Wendell, R.A., Sekiya, H., Shiozawa, M., Suzuki, Y., Takeda, A., Takenaga, Y., Ueno, K., Yokozawa, T., Kaji, H., Kajita, T., Kaneyuki, K., Lee, K.P., Okumura, K., McLachlan, T., Labarga, L., Kearns, E., Raaf, J.L., Stone, J.L., Sulak, L.R., Goldhaber, M., Bays, K., Carminati, G., Kropp, W.R., Mine, S., Renshaw, A., Smy, M.B., Sobel, H.W., Ganezer, K.S., Hill, J., Keig, W.E., Jang, J.S., Kim, J.Y., Lim, I.T., Albert, J.B., Scholberg, K., Walter, C.W., Wongjirad, T., Ishizuka, T., Tasaka, S., Learned, J.G., Matsuno, S., Smith, S.N., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nishikawa, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Suzuki, A.T., Takeuchi, Y., Ieki, K., Ikeda, M., Kubo, H., Minamino, A., Murakami, A., Nakaya, T., Fukuda, Y., Choi, K., Itow, Y., Mitsuka, G., Miyake, M., Mijakowski, P., Hignight, J., Imber, J., Jung, C.K., Taylor, I., Yanagisawa, C., Ishino, H., Kibayashi, A., Koshio, Y., Mori, T., Sakuda, M., Takeuchi, J., Kuno, Y., Kim, S.B., Okazawa, H., Choi, Y., Nishijima, K., Koshiba, M., Totsuka, Y., Yokoyama, M., Martens, K., Marti, Ll., Obayashi, Y., Vagins, M.R., Chen, S., Sui, H., Yang, Z., Zhang, H., Connolly, K., Dziomba, M., Wilkes, R.J.

    Phys.Rev.D   90 ( 7 )   072005 - 072005   2014年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.90.072005

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    その他リンク: http://physics.aps.org/synopsis-for/10.1103/PhysRevD.90.072005

  • Search for Nucleon Decay via $n \to \bar{\nu} \pi^{0}$ and $p \to \bar{\nu} \pi^{+}$ in Super-Kamiokande 査読

    Abe, K., Hayato, Y., Iida, T., Iyogi, K., Kameda, J., Koshio, Y., Kozuma, Y., Marti, Ll., Miura, M., Moriyama, S., Nakahata, M., Nakayama, S., Obayashi, Y., Sekiya, H., Shiozawa, M., Suzuki, Y., Takeda, A., Takenaga, Y., Ueno, K., Ueshima, K., Yamada, S., Yokozawa, T., Ishihara, C., Kaji, H., Kajita, T., Kaneyuki, K., Lee, K.P., McLachlan, T., Okumura, K., Shimizu, Y., Tanimoto, N., Labarga, L., Kearns, E., Litos, M., Raaf, J.L., Stone, J.L., Sulak, L.R., Goldhaber, M., Bays, K., Kropp, W.R., Mine, S., Regis, C., Renshaw, A., Smy, M.B., Sobel, H.W., Ganezer, K.S., Hill, J., Keig, W.E., Jang, J.S., Kim, J.Y., Lim, I.T., Albert, J.B., Scholberg, K., Walter, C.W., Wendell, R., Wongjirad, T.M., Ishizuka, T., Tasaka, S., Learned, J.G., Matsuno, S., Smith, S.N., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nishikawa, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Suzuki, A.T., Takeuchi, Y., Ikeda, M., Minamino, A., Nakaya, T., Fukuda, Y., Itow, Y., Mitsuka, G., Tanaka, T., Jung, C.K., Lopez, G.D., Taylor, I., Yanagisawa, C., Ishino, H., Kibayashi, A., Mino, S., Mori, T., Sakuda, M., Toyota, H., Kuno, Y., Yoshida, M., Kim, S.B., Yang, B.S., Okazawa, H., Choi, Y., Nishijima, K., Koshiba, M., Yokoyama, M., Totsuka, Y., Martens, K., Schuemann, J., Vagins, M.R., Chen, S., Heng, Y., Yang, Z., Zhang, H., Kielczewska, D., Mijakowski, P., Connolly, K., Dziomba, M., Thrane, E., Wilkes, R.J.

    Phys.Rev.Lett.   113 ( 12 )   121802 - 121802   2014年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevLett.113.121802

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  • Search for Trilepton Nucleon Decay via p -&gt; e(+)vv and p -&gt; mu(+)vv in the Super-Kamiokande Experiment 査読

    V. Takhistov, K. Abe, Y. Haga, Y. Hayato, M. Ikeda, K. Iyogi, J. Kameda, Y. Kishimoto, M. Miura, S. Moriyama, M. Nakahata, Y. Nakano, S. Nakayama, H. Sekiya, M. Shiozawa, Y. Suzuki, A. Takeda, H. Tanaka, T. Tomura, K. Ueno, R. A. Wendell, T. Yokozawa, T. Irvine, T. Kajita, I. Kametani, K. Kaneyuki, K. P. Lee, T. McLachlan, Y. Nishimura, E. Richard, K. Okumura, L. Labarga, P. Fernandez, S. Berkman, H. A. Tanaka, S. Tobayama, J. Gustafson, E. Kearns, J. L. Raaf, J. L. Stone, L. R. Sulak, M. Goldhaber, G. Carminati, W. R. Kropp, S. Mine, P. Weatherly, A. Renshaw, M. B. Smy, H. W. Sobel, K. S. Ganezer, B. L. Hartfiel, J. Hill, W. E. Keig, N. Hong, J. Y. Kim, I. T. Lim, T. Akiri, A. Himmel, K. Scholberg, C. W. Walter, T. Wongjirad, T. Ishizuka, S. Tasaka, J. S. Jang, J. G. Learned, S. Matsuno, S. N. Smith, T. Hasegawa, T. Ishida, T. Ishii, T. Kobayashi, T. Nakadaira, K. Nakamura, Y. Oyama, K. Sakashita, T. Sekiguchi, T. Tsukamoto, A. T. Suzuki, Y. Takeuchi, C. Bronner, S. Hirota, K. Huang, K. Ieki, T. Kikawa, A. Minamino, A. Murakami, T. Nakaya, K. Suzuki, S. Takahashi, K. Tateishi, Y. Fukuda, K. Choi, Y. Itow, G. Mitsuka, P. Mijakowski, J. Hignight, J. Imber, C. K. Jung, C. Yanagisawa, H. Ishino, A. Kibayashi, Y. Koshio, T. Mori, M. Sakuda, R. Yamaguchi, T. Yano, Y. Kuno, R. Tacik, S. B. Kim, H. Okazawa, Y. Choi, K. Nishijima, M. Koshiba, Y. Suda, Y. Totsuka, M. Yokoyama, K. Martens, Ll. Marti, M. R. Vagins, J. F. Martin, P. de Perio, A. Konaka, M. J. Wilking, S. Chen, Y. Zhang, K. Connolly, R. J. Wilkes

    PHYSICAL REVIEW LETTERS   113 ( 10 )   1 - 6   2014年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    The trilepton nucleon decay modes p -&gt; e(+)nu nu and p -&gt; mu(+)nu nu violate vertical bar Delta(B - L)vertical bar by two units. Using data from a 273.4 kt yr exposure of Super-Kamiokande a search for these decays yields a fit consistent with no signal. Accordingly, lower limits on the partial lifetimes of tau(p -&gt; e+nu nu) &gt; 1.7 x 10(32) years and tau(p -&gt;mu+nu nu) &gt; 2.2 x 10(32) years at a 90% confidence level are obtained. These limits can constrain Grand Unified Theories which allow for such processes.

    DOI: 10.1103/PhysRevLett.113.101801

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  • Mission Design of LiteBIRD 査読

    T. Matsumura, Y. Akiba, J. Borrill, Y. Chinone, M. Dobbs, H. Fuke, A. Ghribi, M. Hasegawa, K. Hattori, M. Hattori, M. Hazumi, W. Holzapfel, Y. Inoue, K. Ishidoshiro, H. Ishino, H. Ishitsuka, K. Karatsu, N. Katayama, I. Kawano, A. Kibayashi, Y. Kibe, K. Kimura, N. Kimura, K. Koga, M. Kozu, E. Komatsu, A. Lee, H. Matsuhara, S. Mima, K. Mitsuda, K. Mizukami, H. Morii, T. Morishima, S. Murayama, M. Nagai, R. Nagata, S. Nakamura, M. Naruse, K. Natsume, T. Nishibori, H. Nishino, A. Noda, T. Noguchi, H. Ogawa, S. Oguri, I. Ohta, C. Otani, P. Richards, S. Sakai, N. Sato, Y. Sato, Y. Sekimoto, A. Shimizu, K. Shinozaki, H. Sugita, T. Suzuki, A. Suzuki, O. Tajima, S. Takada, S. Takakura, Y. Takei, T. Tomaru, Y. Uzawa, T. Wada, H. Watanabe, M. Yoshida, N. Yamasaki, T. Yoshida, K. Yotsumoto

    JOURNAL OF LOW TEMPERATURE PHYSICS   176 ( 5-6 )   733 - 740   2014年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:SPRINGER/PLENUM PUBLISHERS  

    LiteBIRD is a next-generation satellite mission to measure the polarization of the cosmic microwave background (CMB) radiation. On large angular scales the B-mode polarization of the CMB carries the imprint of primordial gravitational waves, and its precise measurement would provide a powerful probe of the epoch of inflation. The goal of LiteBIRD is to achieve a measurement of the characterizing tensor to scalar ratio to an uncertainty of . In order to achieve this goal we will employ a kilo-pixel superconducting detector array on a cryogenically cooled sub-Kelvin focal plane with an optical system at a temperature of 4 K. We are currently considering two detector array options; transition edge sensor (TES) bolometers and microwave kinetic inductance detectors. In this paper we give an overview of LiteBIRD and describe a TES-based polarimeter designed to achieve the target sensitivity of 2 K arcmin over the frequency range 50-320 GHz.

    DOI: 10.1007/s10909-013-0996-1

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  • Development of Microwave Kinetic Inductance Detectors for a Detection of Phonons 査読

    H. Ishino, A. Kibayashi, K. Hattori, M. Hazumi, Y. Kibe, S. Mima, N. Sato, M. Yoshida, H. Watanabe

    JOURNAL OF LOW TEMPERATURE PHYSICS   176 ( 3-4 )   161 - 167   2014年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:SPRINGER/PLENUM PUBLISHERS  

    We present a status of the development of microwave kinetic inductance detectors (MKIDs) for a detection of athermal phonons in a substrate. The energy deposited in the substrate is converted to athermal phonons. Athermal phonons arriving at the surface can break Cooper pairs in the MKIDs which are formed as a thin superconducting metal layer in the substrate surface. By counting the number of Cooper pairs broken and measuring the phonon arrival times, we can measure the amount of deposited energy and its position. MKIDs are suitable for the frequency-domain multiplexing readout, which enables us to readout hundreds of pixels simultaneously and, hence, to detect athermal phonons with a large detection efficiency. We fabricated MKIDs with a combination of aluminum and niobium on a silicon substrate, and then irradiated it with particles from an Am source. We detected phonons and made a rough estimation of the phonon propagation velocity of 1.1-1.3 km/s. We found that a thin insulator layer can block the phonon propagation from the substrate to the thin metal layer.

    DOI: 10.1007/s10909-013-1025-0

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  • Search for Dinucleon Decay into Kaons in Super-Kamiokande 査読

    Litos, M., Abe, K., Hayato, Y., Iida, T., Ikeda, M., Iyogi, K., Kameda, J., Kobayashi, K., Koshio, Y., Kozuma, Y., Miura, M., Moriyama, S., Nakahata, M., Nakayama, S., Obayashi, Y., Ogawa, H., Sekiya, H., Shiozawa, M., Suzuki, Y., Takeda, A., Takenaga, Y., Takeuchi, Y., Ueno, K., Ueshima, K., Watanabe, H., Yamada, S., Yokozawa, T., Hazama, S., Ishihara, C., Kaji, H., Kajita, T., Kaneyuki, K., McLachlan, T., Okumura, K., Shimizu, Y., Tanimoto, N., Vagins, M. R., Kearns, E., Stone, J. L., Sulak, L. R., Dufour, F., Raaf, J. L., Henning, B., Goldhaber, M., Bays, K., Casper, D., Cravens, J. P., Kropp, W. R., Mine, S., Regis, C., Smy, M. B., Sobel, H. W., Ganezer, K. S., Hill, J., Keig, W. E., Jang, J. S., Kim, J. Y., Lim, I. T., Albert, J. B., Wongjirad, T., Wendell, R., Scholberg, K., Walter, C. W., Tasaka, S., Learned, J. G., Matsuno, S., Watanabe, Y., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nishikawa, K., Nishino, H., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Suzuki, A. T., Minamino, A., Nakaya, T., Fukuda, Y., Itow, Y., Mitsuka, G., Tanaka, T., Jung, C. K., Lopez, G., McGrew, C., Terri, R., Yanagisawa, C., Tamura, N., Ishino, H., Kibayashi, A., Mino, S., Mori, T., Sakuda, M., Toyota, H., Kuno, Y., Yoshida, M., Kim, S. B., Yang, B. S., Ishizuka, T., Okazawa, H., Choi, Y., Nishijima, K., Yokosawa, Y., Koshiba, M., Yokoyama, M., Totsuka, Y., Chen, S., Heng, Y., Yang, Z., Zhang, H., Kielczewska, D., Mijakowski, P., Connolly, K., Dziomba, M., Thrane, E., Wilkes, R. J.

    Phys.Rev.Lett.   112 ( 13 )   131803 - 131803   2014年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevLett.112.131803

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  • First Indication of Terrestrial Matter Effects on Solar Neutrino Oscillation 査読

    Renshaw, A., Abe, K., Hayato, Y., Iyogi, K., Kameda, J., Kishimoto, Y., Miura, M., Moriyama, S., Nakahata, M., Nakano, Y., Nakayama, S., Sekiya, H., Shiozawa, M., Suzuki, Y., Takeda, A., Takenaga, Y., Tomura, T., Ueno, K., Yokozawa, T., Wendell, R.A., Irvine, T., Kajita, T., Kaneyuki, K., Lee, K.P., Nishimura, Y., Okumura, K., McLachlan, T., Labarga, L., Berkman, S., Tanaka, H.A., Tobayama, S., Kearns, E., Raaf, J.L., Stone, J.L., Sulak, L.R., Goldhabar, M., Bays, K., Carminati, G., Kropp, W.R., Mine, S., Smy, M.B., Sobel, H.W., Ganezer, K.S., Hill, J., Keig, W.E., Hong, N., Kim, J.Y., Lim, I.T., Akiri, T., Himmel, A., Scholberg, K., Walter, C.W., Wongjirad, T., Ishizuka, T., Tasaka, S., Jang, J.S., Learned, J.G., Matsuno, S., Smith, S.N., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Suzuki, A.T., Takeuchi, Y., Bronner, C., Hirota, S., Huang, K., Ieki, K., Ikeda, M., Kikawa, T., Minamino, A., Nakaya, T., Suzuki, K., Takahashi, S., Fukuda, Y., Choi, K., Itow, Y., Mitsuka, G., Mijakowski, P., Hignight, J., Imber, J., Jung, C.K., Yanagisawa, C., Ishino, H., Kibayashi, A., Koshio, Y., Mori, T., Sakuda, M., Yano, T., Kuno, Y., Tacik, R., Kim, S.B., Okazawa, H., Choi, Y., Nishijima, K., Koshiba, M., Totsuka, Y., Yokoyama, M., Martens, K., Marti, Ll., Vagins, M.R., Martin, J.F., de Perio, P., Konaka, A., Wilking, M.J., Chen, S., Zhang, Y., Wilkes, R.J.

    Phys.Rev.Lett.   112 ( 9 )   091805 - 091805   2014年3月

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  • Calibration of the Super-Kamiokande Detector 査読

    Abe, K., Hayato, Y., Iida, T., Iyogi, K., Kameda, J., Kishimoto, Y., Koshio, Y., Marti, Ll., Miura, M., Moriyama, S., Nakahata, M., Nakano, Y., Nakayama, S., Obayashi, Y., Sekiya, H., Shiozawa, M., Suzuki, Y., Takeda, A., Takenaga, Y., Tanaka, H., Tomura, T., Ueno, K., Wendell, R.A., Yokozawa, T., Irvine, T.J., Kaji, H., Kajita, T., Kaneyuki, K., Lee, K.P., Nishimura, Y., Okumura, K., Mclachlan, T., Labarga, L., Kearns, E., Raaf, J.L., Stone, J.L., Sulak, L.R., Berkman, S., Tanaka, H.A., Tobayama, S., Goldhaber, M., Bays, K., Carminati, G., Kropp, W.R., Mine, S., Renshaw, A., Smy, M.B., Sobel, H.W., Ganezer, K.S., Hill, J., Keig, W.E., Jang, J.S., Kim, J.Y., Lim, I.T., Hong, N., Akiri, T., Albert, J.B., Himmel, A., Scholberg, K., Walter, C.W., Wongjirad, T., Ishizuka, T., Tasaka, S., Learned, J.G., Matsuno, S., Smith, S.N., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nishikawa, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Suzuki, A.T., Takeuchi, Y., Huang, K., Ieki, K., Ikeda, M., Kikawa, T., Kubo, H., Minamino, A., Murakami, A., Nakaya, T., Otani, M., Suzuki, K., Takahashi, S., Fukuda, Y., Choi, K., Itow, Y., Mitsuka, G., Miyake, M., Mijakowski, P., Tacik, R., Hignight, J., Imber, J., Jung, C.K., Taylor, I., Yanagisawa, C., Idehara, Y., Ishino, H., Kibayashi, A., Mori, T., Sakuda, M., Yamaguchi, R., Yano, T., Kuno, Y., Kim, S.B., Yang, B.S., Okazawa, H., Choi, Y., Nishijima, K., Koshiba, M., Totsuka, Y., Yokoyama, M., Martens, K., Vagins, M.R., Martin, J.F., De Perio, P., Konaka, A., Wilking, M.J., Chen, S., Heng, Y., Sui, H., Yang, Z., Zhang, H., Zhenwei, Y., Connolly, K., Dziomba, M., Wilkes, R.J.

    Nucl.Instrum.Meth.A   737   253 - 272   2014年2月

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.nima.2013.11.081

    Web of Science

    arXiv

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  • Development of the Superconducting Detectors for Applications to Particle Physics and Astrophysics 査読

    Kibayashi Atsuko, Hazumi Masashi, Ishino Hirokazu, Kibe Yoshiaki, Mima Satoru, Otani Chiko, Sato Nobuaki, Watanabe Hiroki, Yamada Yosuke, Yoshida Mitsuhir

    JPS Conference Proceedings   1 ( 1 )   3118   2014年

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  • Evidence for the Appearance of Atmospheric Tau Neutrinos in Super-Kamiokande 査読

    Abe, K., Hayato, Y., Iida, T., Iyogi, K., Kameda, J., Koshio, Y., Kozuma, Y., Marti, Ll., Miura, M., Moriyama, S., Nakahata, M., Nakayama, S., Obayashi, Y., Sekiya, H., Shiozawa, M., Suzuki, Y., Takeda, A., Takenaga, Y., Ueno, K., Ueshima, K., Yamada, S., Yokozawa, T., Ishihara, C., Kaji, H., Kajita, T., Kaneyuki, K., Lee, K.P., McLachlan, T., Okumura, K., Shimizu, Y., Tanimoto, N., Labarga, L., Kearns, E., Litos, M., Raaf, J.L., Stone, J.L., Sulak, L.R., Goldhaber, M., Bays, K., Kropp, W.R., Mine, S., Regis, C., Renshaw, A., Smy, M.B., Sobel, H.W., Ganezer, K.S., Hill, J., Keig, W.E., Jang, J.S., Kim, J.Y., Lim, I.T., Albert, J.B., Scholberg, K., Walter, C.W., Wendell, R., Wongjirad, T.M., Ishizuka, T., Tasaka, S., Learned, J.G., Matsuno, S., Smith, S.N., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nishikawa, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Suzuki, A.T., Takeuchi, Y., Ikeda, M., Minamino, A., Nakaya, T., Fukuda, Y., Itow, Y., Mitsuka, G., Tanaka, T., Jung, C.K., Lopez, G.D., Taylor, I., Yanagisawa, C., Ishino, H., Kibayashi, A., Mino, S., Mori, T., Sakuda, M., Toyota, H., Kuno, Y., Yoshida, M., Kim, S.B., Yang, B.S., Okazawa, H., Choi, Y., Nishijima, K., Koshiba, M., Yokoyama, M., Totsuka, Y., Martens, K., Schuemann, J., Vagins, M.R., Chen, S., Heng, Y., Yang, Z., Zhang, H., Kielczewska, D., Mijakowski, P., Connolly, K., Dziomba, M., Thrane, E., Wilkes, R.J.

    Phys.Rev.Lett.   110 ( 18 )   181802 - 181802   2013年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevLett.110.181802

    arXiv

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  • Development of microwave kinetic inductance detectors and their readout system for LiteBIRD 査読

    K. Hattori, M. Hazumi, H. Ishino, A. Kibayashi, Y. Kibe, S. Mima, T. Okamura, N. Sato, T. Tomaru, Y. Yamada, M. Yoshida, T. Yuasa, H. Watanabe

    Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment   732   306 - 310   2013年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    Primordial gravitational waves generated by inflation have produced an odd-parity pattern B-mode in the cosmic microwave background (CMB) polarization. LiteBIRD (Light satellite for the studies of B-mode polarization and Inflation from cosmic background Radiation Detection) aims at detecting this B-mode polarization precisely. It requires about 2000 detectors capable of detecting a frequency range from 50 GHz to 250 GHz with ultra low noise. Superconducting detectors are suitable for this requirement. We have fabricated and tested microwave kinetic inductance detectors (MKIDs) and developed a new readout system. We have designed antenna-coupled MKIDs. Quasi-particles are created by incident radiation and are detected as a change of the surface impedance of a superconductor strip. This change of the surface impedance is translated into the change of the resonant frequency of a microwave signal transmitted through the resonator. We also have developed a new readout system for MKIDs. The newly developed readout system is not only able to read out the amplitude and the phase data with the homodyne detection for multi-channels, but also provides a unique feature of tracking the resonant frequency of the target resonator. This mechanism enables us to detect signals with a large dynamic range. We report on the recent R&amp
    D status of the developing MKIDs and on the read-out system for LiteBIRD. © 2013 Elsevier B.V.

    DOI: 10.1016/j.nima.2013.08.019

    Web of Science

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  • Novel Frequency-Domain Multiplexing MKID Readout for the LiteBIRD Satellite 査読

    K. Hattori, S. Ariyoshi, M. Hazumi, H. Ishino, A. Kibayashi, S. Mima, C. Otani, N. Satoh, T. Tomaru, M. Yoshida, H. Watanabe

    JOURNAL OF LOW TEMPERATURE PHYSICS   167 ( 5-6 )   671 - 677   2012年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:SPRINGER/PLENUM PUBLISHERS  

    The satellite LiteBIRD (Light satellite for the studies of B-mode polarization and Inflation from cosmic background Radiation Detection) is being designed to detect the B-mode polarization of the cosmic microwave background radiation. LiteBIRD will carry about 2,000 detectors for measurements in five bands (60, 80, 100, 150, and 220 GHz). Microwave kinetic inductance detectors (MKIDs) that can be multiplexed in a single readout line are suitable for the large focal plane detector array. We develop an MKID readout system for LiteBIRD to monitor the amplitude, phase, and resonant frequency of each MKID resonator simultaneously and follow movements of the resonant frequency caused by changes in the input radiation intensity. This mechanism enables us to have a larger dynamic range for the MKIDs, compared with a system that monitors the amplitude and phase on the resonant frequency. We also propose an MKID having a half-wavelength resonator. This MKID transmits the resonant microwave signal from one feedline to another. It can offer clear microwaves passing through the resonators, even if the coupling and internal quality factors are mismatched. With this MKID, our readout system can track resonance frequency changes much more easily. We present the status of the readout system development and demonstrate the performance with the half-wavelength MKID.

    DOI: 10.1007/s10909-012-0506-x

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  • Search for GUT monopoles at Super–Kamiokande 査読

    Ueno, K., Abe, K., Hayato, Y., Iida, T., Iyogi, K., Kameda, J., Koshio, Y., Kozuma, Y., Miura, M., Moriyama, S., Nakahata, M., Nakayama, S., Obayashi, Y., Sekiya, H., Shiozawa, M., Suzuki, Y., Takeda, A., Takenaga, Y., Ueshima, K., Yamada, S., Yokozawa, T., Martens, K., Schuemann, J., Vagins, M., Ishihara, C., Kaji, H., Kajita, T., Kaneyuki, K., McLachlan, T., Okumura, K., Shimizu, Y., Tanimoto, N., Kearns, E., Litos, M., Raaf, J.L., Stone, J.L., Sulak, L.R., Bays, K., Kropp, W.R., Mine, S., Regis, C., Renshaw, A., Smy, M.B., Sobel, H.W., Ganezer, K.S., Hill, J., Keig, W.E., Jang, J.S., Kim, J.Y., Lim, I.T., Albert, J.B., Scholberg, K., Walter, C.W., Wendell, R., Wongjirad, T., Ishizuka, T., Tasaka, S., Learned, J.G., Matsuno, S., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nishikawa, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Suzuki, A.T., Takeuchi, Y., Ikeda, M., Minamino, A., Nakaya, T., Labarga, L., Marti, Ll., Fukuda, Y., Itow, Y., Mitsuka, G., Tanaka, T., Jung, C.K., Lopez, G., Taylor, I., Yanagisawa, C., Ishino, H., Kibayashi, A., Mino, S., Mori, T., Sakuda, M., Toyota, H., Kuno, Y., Yoshida, M., Kim, S.B., Yang, B.S., Okazawa, H., Choi, Y., Nishijima, K., Koshiba, M., Totsuka, Y., Yokoyama, M., Chen, S., Heng, Y., Yang, Z., Zhang, H., Kielczewska, D., Mijakowski, P., Connolly, K., Dziomba, M., Thrane, E., Wilkes, R.J.

    Astropart.Phys.   36 ( 1 )   131 - 136   2012年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.astropartphys.2012.05.008

    Web of Science

    arXiv

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  • Search for Proton Decay via $p -> \mu^+ K^0$ in Super-Kamiokande I, II, and III 査読

    Regis, C., Abe, K., Hayato, Y., Iyogi, K., Kameda, J., Koshio, Y., Marti, Ll., Miura, M., Moriyama, S., Nakahata, M., Nakayama, S., Obayashi, Y., Sekiya, H., Shiozawa, M., Suzuki, Y., Takeda, A., Takenaga, Y., Ueno, K., Yokozawa, T., Kaji, H., Kajita, T., Kaneyuki, K., Lee, K.P., Okumura, K., McLachlan, T., Labarga, L., Kearns, E., Raaf, J.L., Stone, J.L., Sulak, L.R., Goldhaber, M., Bays, K., Carminati, G., Kropp, W.R., Mine, S., Renshaw, A., Smy, M.B., Sobel, H.W., Ganezer, K.S., Hill, J., Keig, W.E., Jang, J.S., Kim, J.Y., Lim, I.T., Albert, J.B., Scholberg, K., Walter, C.W., Wendell, R.A., Wongjirad, T., Ishizuka, T., Tasaka, S., Learned, J.G., Matsuno, S., Smith, S.N., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nishikawa, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Suzuki, A.T., Takeuchi, Y., Ieki, K., Ikeda, M., Kubo, H., Minamino, A., Murakami, A., Nakaya, T., Fukuda, Y., Choi, K., Itow, Y., Mitsuka, G., Miyake, M., Mijakowski, P., Hignight, J., Imber, J., Jung, C.K., Taylor, I., Yanagisawa, C., Ishino, H., Kibayashi, A., Mori, T., Sakuda, M., Takeuchi, J., Kuno, Y., Kim, S.B., Okazawa, H., Choi, Y., Nishijima, K., Koshiba, M., Totsuka, Y., Yokoyama, M., Martens, K., Vagins, M.R., Chen, S., Sui, H., Yang, Z., Zhang, H., Connolly, K., Dziomba, M., Wilkes, R.J.

    Phys.Rev.D   86 ( 012006 )   012006 - 012006   2012年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.86.012006

    Web of Science

    arXiv

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  • Supernova Relic Neutrino Search at Super-Kamiokande 査読

    Bays, K., Iida, T., Abe, K., Hayato, Y., Iyogi, K., Kameda, J., Koshio, Y., Marti, L., Miura, M., Moriyama, S., Nakahata, M., Nakayama, S., Obayashi, Y., Sekiya, H., Shiozawa, M., Suzuki, Y., Takeda, A., Takenaga, Y., Ueno, K., Ueshima, K., Yamada, S., Yokozawa, T., Kaji, H., Kajita, T., Kaneyuki, K., McLachlan, T., Okumura, K., Lee, K.P., Martens, K., Vagins, M., Labarga, L., Kearns, E., Litos, M., Raaf, J.L., Stone, J.L., Sulak, L.R., Kropp, W.R., Mine, S., Regis, C., Renshaw, A., Smy, M.B., Sobel, H.W., Ganezer, K.S., Hill, J., Keig, W.E., Cho, S., Jang, J.S., Kim, J.Y., Lim, I.T., Albert, J., Scholberg, K., Walter, C.W., Wendell, R., Wongjirad, T., Ishizuka, T., Tasaka, S., Learned, J.G., Matsuno, S., Smith, S., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nishikawa, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Suzuki, A.T., Takeuchi, Y., Ikeda, M., Matsuoka, K., Minamino, A., Murakami, A., Nakaya, T., Fukuda, Y., Itow, Y., Mitsuka, G., Miyake, M., Tanaka, T., Hignight, J., Imber, J., Jung, C.K., Taylor, I., Yanagisawa, C., Kibayashi, A., Ishino, H., Mino, S., Sakuda, M., Mori, T., Toyota, H., Kuno, Y., Kim, S.B., Yang, B.S., Okazawa, H., Choi, Y., Nishijima, K., Koshiba, M., Totsuka, Y., Yokoyama, M., Heng, Y., Chen, S., Zhang, H., Yang, Z., Mijakowski, P., Connolly, K., Dziomba, M., Wilkes, R.J.

    Phys.Rev.D   85 ( 052007 )   052007 - 052007   2012年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.85.052007

    Web of Science

    arXiv

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  • Letter of Intent: The Hyper-Kamiokande Experiment --- Detector Design and Physics Potential ---

    K. Abe, T. Abe, H. Aihara, Y. Fukuda, Y. Hayato, K. Huang, A. K. Ichikawa, M. Ikeda, K. Inoue, H. Ishino, Y. Itow, T. Kajita, J. Kameda, Y. Kishimoto, M. Koga, Y. Koshio, K. P. Lee, A. Minamino, M. Miura, S. Moriyama, M. Nakahata, K. Nakamura, T. Nakaya, S. Nakayama, K. Nishijima, Y. Nishimura, Y. Obayashi, K. Okumura, M. Sakuda, H. Sekiya, M. Shiozawa, A. T. Suzuki, Y. Suzuki, A. Takeda, Y. Takeuchi, H. K. M. Tanaka, S. Tasaka, T. Tomura, M. R. Vagins, J. Wang, M. Yokoyama

    2011年9月

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    掲載種別:研究論文(学術雑誌)  

    We propose the Hyper-Kamiokande (Hyper-K) detector as a next generation<br />
    underground water Cherenkov detector. It will serve as a far detector of a long<br />
    baseline neutrino oscillation experiment envisioned for the upgraded J-PARC,<br />
    and as a detector capable of observing -- far beyond the sensitivity of the<br />
    Super-Kamiokande (Super-K) detector -- proton decays, atmospheric neutrinos,<br />
    and neutrinos from astronomical origins. The baseline design of Hyper-K is<br />
    based on the highly successful Super-K, taking full advantage of a well-proven<br />
    technology. (to be continued)

    arXiv

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  • Solar neutrino results in Super-Kamiokande-III 査読

    Abe, K., Hayato, Y., Iida, T., Ikeda, M., Ishihara, C., Iyogi, K., Kameda, J., Kobayashi, K., Koshio, Y., Kozuma, Y., Miura, M., Moriyama, S., Nakahata, M., Nakayama, S., Obayashi, Y., Ogawa, H., Sekiya, H., Shiozawa, M., Suzuki, Y., Takeda, A., Takenaga, Y., Ueno, K., Ueshima, K., Watanabe, H., Yamada, S., Yokozawa, T., Hazama, S., Kaji, H., Kajita, T., Kaneyuki, K., McLachlan, T., Okumura, K., Shimizu, Y., Tanimoto, N., Vagins, M.R., Labarga, L., Magro, L.M., Dufour, F., Kearns, E., Litos, M., Raaf, J.L., Stone, J.L., Sulak, L.R., Wang, W., Goldhaber, M., Bays, K., Casper, D., Cravens, J.P., Kropp, W.R., Mine, S., Regis, C., Renshaw, A., Smy, M.B., Sobel, H.W., Ganezer, K.S., Hill, J., Keig, W.E., Jang, J.S., Kim, J.Y., Lim, I.T., Albert, J., Wendell, R., Wongjirad, T., Scholberg, K., Walter, C.W., Ishizuka, T., Tasaka, S., Learned, J.G., Matsuno, S., Watanabe, Y., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nishikawa, K., Nishino, H., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Suzuki, A.T., Takeuchi, Y., Minamino, A., Nakaya, T., Fukuda, Y., Itow, Y., Mitsuka, G., Tanaka, T., Jung, C.K., Lopez, G., McGrew, C., Terri, R., Yanagisawa, C., Tamura, N., Ishino, H., Kibayashi, A., Mino, S., Mori, T., Sakuda, M., Toyota, H., Kuno, Y., Yoshida, M., Kim, S.B., Yang, B.S., Ishizuka, T., Okazawa, H., Choi, Y., Nishijima, K., Yokosawa, Y., Koshiba, M., Totsuka, Y., Yokoyama, M., Chen, S., Heng, Y., Yang, Z., Zhang, H., Kielczewska, D., Mijakowski, P., Connolly, K., Dziomba, M., Thrane, E., Wilkes, R.J.

    Phys.Rev.D   83 ( 052010 )   052010 - 052010   2011年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.83.052010

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    arXiv

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  • An Indirect Search for WIMPs in the Sun using 3109.6 days of upward-going muons in Super-Kamiokande 査読

    Tanaka, T., Abe, K., Hayato, Y., Iida, T., Kameda, J., Koshio, Y., Kouzuma, Y., Miura, M., Moriyama, S., Nakahata, M., Nakayama, S., Obayashi, Y., Sekiya, H., Shiozawa, M., Suzuki, Y., Takeda, A., Takenaga, Y., Ueno, K., Ueshima, K., Yamada, S., Yokozawa, T., Ishihara, C., Hazama, S., Kaji, H., Kajita, T., Kaneyuki, K., McLachlan, T., Okumura, K., Shimizu, Y., Tanimoto, N., Dufour, F., Kearns, E., Litos, M., Raaf, J.L., Stone, J.L., Sulak, L.R., Cravens, J.P., Bays, K., Kropp, W.R., Mine, S., Regis, C., Smy, M.B., Sobel, H.W., Ganezer, K.S., Hill, J., Keig, W.E., Jang, J.S., Kim, J.Y., Lim, I.T., Albert, J.B., Scholberg, K., Walter, C.W., Wendell, R., Wongjirad, T., Ishizuka, T., Tasaka, S., Learned, J.G., Matsuno, S., Smith, S., Martens, K., Vagins, M., Watanabe, Y., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nishikawa, K., Nishino, H., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Suzuki, A.T., Takeuchi, Y., Ikeda, M., Minamino, A., Nakaya, T., Labarga, L., Fukuda, Y., Itow, Y., Mitsuka, G., Jung, C.K., McGrew, C., Lopez, G., Yanagisawa, C., Tamura, N., Ishino, H., Kibayashi, A., Sakuda, M., Kuno, Y., Yoshida, M., Kim, S.B., Yang, B.S., Okazawa, H., Choi, Y., Nishijima, K., Yokosawa, Y., Koshiba, M., Totsuka, Y., Yokoyama, M., Chen, S., Heng, Y., Yang, Z., Zhang, H., Kielczewska, D., Mijakowski, P., Connolly, K., Dziomba, M., Thrane, E., Wilkes, R.J.

    Astrophys.J.   742 ( 78 )   78 - 78   2011年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1088/0004-637X/742/2/78

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    arXiv

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  • Search for Differences in Oscillation Parameters for Atmospheric Neutrinos and Antineutrinos at Super-Kamiokande 査読

    Abe, K., Hayato, Y., Iida, T., Ikeda, M., Iyogi, K., Kameda, J., Koshio, Y., Kozuma, Y., Miura, M., Moriyama, S., Nakahata, M., Nakayama, S., Obayashi, Y., Sekiya, H., Shiozawa, M., Suzuki, Y., Takeda, A., Takenaga, Y., Takeuchi, Y., Ueno, K., Ueshima, K., Watanabe, H., Yamada, S., Yokozawa, T., Ishihara, C., Kaji, H., Lee, K.P., Kajita, T., Kaneyuki, K., McLachlan, T., Okumura, K., Shimizu, Y., Tanimoto, N., Martens, K., Vagins, M.R., Labarga, L., Magro, L.M., Dufour, F., Kearns, E., Litos, M., Raaf, J.L., Stone, J.L., Sulak, L.R., Goldhaber, M., Bays, K., Kropp, W.R., Mine, S., Regis, C., Smy, M.B., Sobel, H.W., Ganezer, K.S., Hill, J., Keig, W.E., Jang, J.S., Kim, J.Y., Lim, I.T., Albert, J.B., Scholberg, K., Walter, C.W., Wendell, R., Wongjirad, T.M., Tasaka, S., Learned, J.G., Matsuno, S., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nishikawa, K., Nishino, H., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Suzuki, A.T., Minamino, A., Nakaya, T., Fukuda, Y., Itow, Y., Mitsuka, G., Tanaka, T., Jung, C.K., Taylor, I., Yanagisawa, C., Ishino, H., Kibayashi, A., Mino, S., Mori, T., Sakuda, M., Toyota, H., Kuno, Y., Kim, S.B., Yang, B.S., Ishizuka, T., Okazawa, H., Choi, Y., Nishijima, K., Koshiba, M., Yokoyama, M., Totsuka, Y., Chen, S., Heng, Y., Yang, Z., Zhang, H., Kielczewska, D., Mijakowski, P., Connolly, K., Dziomba, M., Wilkes, R.J.

    Phys.Rev.Lett.   107 ( 241801 )   241801 - 241801   2011年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevLett.107.241801

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    arXiv

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  • Measurement of CP asymmetries in B0 --> K0pi0 decays 査読

    M. Fujikawa, Belle Collaboration

    Physical Review D   81 ( 011101(R) )   1 - 7   2010年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.81.011101

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  • Atmospheric neutrino oscillation analysis with sub-leading effects in Super-Kamiokande I, II, and III 査読

    Wendell, R., Ishihara, C., Abe, K., Hayato, Y., Iida, T., Ikeda, M., Iyogi, K., Kameda, J., Kobayashi, K., Koshio, Y., Kozuma, Y., Miura, M., Moriyama, S., Nakahata, M., Nakayama, S., Obayashi, Y., Ogawa, H., Sekiya, H., Shiozawa, M., Suzuki, Y., Takeda, A., Takenaga, Y., Takeuchi, Y., Ueno, K., Ueshima, K., Watanabe, H., Yamada, S., Yokozawa, T., Hazama, S., Kaji, H., Kajita, T., Kaneyuki, K., McLachlan, T., Okumura, K., Shimizu, Y., Tanimoto, N., Vagins, M.R., Dufour, F., Kearns, E., Litos, M., Raaf, J.L., Stone, J.L., Sulak, L.R., Wang, W., Goldhaber, M., Bays, K., Casper, D., Cravens, J.P., Kropp, W.R., Mine, S., Regis, C., Smy, M.B., Sobel, H.W., Ganezer, K.S., Hill, J., Keig, W.E., Jang, J.S., Kim, J.Y., Lim, I.T., Albert, J., Fechner, M., Scholberg, K., Walter, C.W., Tasaka, S., Learned, J.G., Matsuno, S., Watanabe, Y., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nishikawa, K., Nishino, H., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Suzuki, A.T., Minamino, A., Nakaya, T., Fukuda, Y., Itow, Y., Mitsuka, G., Tanaka, T., Jung, C.K., Lopez, G., McGrew, C., Yanagisawa, C., Tamura, N., Ishino, H., Kibayashi, A., Mino, S., Mori, T., Sakuda, M., Toyota, H., Kuno, Y., Yoshida, M., Kim, S.B., Yang, B.S., Ishizuka, T., Okazawa, H., Choi, Y., Nishijima, K., Yokosawa, Y., Koshiba, M., Yokoyama, M., Totsuka, Y., Chen, S., Heng, Y., Yang, Z., Zhang, H., Kielczewska, D., Mijakowski, P., Connolly, K., Dziomba, M., Thrane, E., Wilkes, R.J.

    Phys.Rev.D   81 ( 092004 )   092004 - 092004   2010年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.81.092004

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    arXiv

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  • Physics at Super B Factory

    T. Aushev, H. Ishino

    arXive   1002.5012   1 - 274   2010年

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    記述言語:英語  

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  • Evidence of time-dependent CP violation in the decay B-0 -&gt; D*+D*- 査読

    K. Vervink, T. Aushev, O. Schneider, K. Arinstein, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, V. Bhardwaj, U. Bitenc, A. Bondar, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, Y. Chao, A. Chen, B. G. Cheon, C. -C. Chiang, R. Chistov, I. -S. Cho, Y. Choi, J. Dalseno, M. Danilov, W. Dungel, S. Eidelman, S. Fratina, N. Gabyshev, P. Goldenzweig, B. Golob, H. Ha, T. Hara, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, Y. Hoshi, W. -S. Hou, H. J. Hyun, K. Inami, A. Ishikawa, H. Ishino, Y. Iwasaki, D. H. Kah, J. H. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, H. O. Kim, Y. I. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, S. Korpar, P. Krizan, P. Krokovny, A. Kuzmin, Y. -J. Kwon, S. -H. Kyeong, J. S. Lee, M. J. Lee, J. Li, A. Limosani, C. Liu, Y. Liu, D. Liventsev, R. Louvot, A. Matyja, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, K. Nishimura, O. Nitoh, T. Ohshima, S. Okuno, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, H. K. Park, R. Pestotnik, L. E. Piilonen, A. Poluektov, H. Sahoo, Y. Sakai, J. Schuemann, A. J. Schwartz, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, J. -G. Shiu, B. Shwartz, S. Stanic, J. Stypula, T. Sumiyoshi, N. Tamura, Y. Teramoto, K. Trabelsi, T. Tsuboyama, S. Uehara, T. Uglov, Y. Unno, S. Uno, G. Varner, C. C. Wang, C. H. Wang, P. Wang, Y. Watanabe, J. Wicht, E. Won, B. D. Yabsley, Y. Yamashita, Z. P. Zhang, V. Zhilich, V. Zhulanov, T. Zivko, A. Zupanc, N. Zwahlen

    PHYSICAL REVIEW D   80 ( 11 )   1 - 6   2009年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a measurement of the CP-odd fraction and the time-dependent CP violation in B-0 -&gt; D*+D*- decays, using 657x10(6) BB events collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We measure a CP-odd fraction of R-perpendicular to=0.125 +/- 0.043(stat)+/- 0.023(syst). From the distributions of the proper-time intervals between a B-0 -&gt; D*+D*- decay and the other B meson in the event, we obtain evidence of CP violation with measured parameters A(D)(*+)D(*-)=0.15 +/- 0.13(stat)+/- 0.04(syst) and SD*+D*-=-0.96 +/- 0.25(stat)(-0.16)(+0.13)(syst).

    DOI: 10.1103/PhysRevD.80.111104

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  • Dalitz analysis of B -&gt; K pi(+)psi ' decays and the Z(4430)(+) 査読

    R. Mizuk, Belle Collaboration, I. Adachi, H. Aihara, K. Arinstein, T. Aushev, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, K. Belous, V. Bhardwaj, A. Bozek, M. Bracko, T. E. Browder, M. -C. Chang, A. Chen, B. G. Cheon, C. -C. Chiang, R. Chistov, I. -S. Cho, S. -K. Choi, Y. Choi, J. Dalseno, M. Danilov, S. Eidelman, N. Gabyshev, P. Goldenzweig, B. Golob, H. Ha, J. Haba, B. -Y. Han, T. Hara, Y. Hasegawa, K. Hayasaka, Y. Hoshi, W. -S. Hou, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, N. J. Joshi, D. H. Kah, J. H. Kang, P. Kapusta, H. Kawai, T. Kawasaki, H. J. Kim, H. O. Kim, J. H. Kim, Y. I. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, S. Korpar, P. Krizan, P. Krokovny, A. Kuzmin, Y. -J. Kwon, S. -H. Kyeong, J. S. Lange, M. J. Lee, S. E. Lee, T. Lesiak, C. Liu, Y. Liu, D. Liventsev, R. Louvot, D. Marlow, A. Matyja, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, T. Mori, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, T. Ohshima, S. Okuno, S. L. Olsen, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, H. K. Park, R. Pestotnik, L. E. Piilonen, H. Sahoo, K. Sakai, Y. Sakai, O. Schneider, C. Schwanda, A. Sekiya, K. Senyo, M. Shapkin, V. Shebalin, J. -G. Shiu, B. Shwartz, S. Stanic, M. Staric, T. Sumiyoshi, Y. Teramoto, I. Tikhomirov, K. Trabelsi, S. Uehara, T. Uglov, Y. Unno, P. Urquijo, G. Varner, K. E. Varvell, K. Vervink, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, R. Wedd, E. Won, B. D. Yabsley, Y. Yamashita, C. Z. Yuan, C. C. Zhang, Z. P. Zhang, V. Zhulanov, T. Zivko, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW D   80 ( 3 )   1 - 7   2009年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    DOI: 10.1103/PhysRevD.80.031104

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  • Measurement of the e(+)e(-)-&gt; J/psi c&lt;overline&gt;c&lt;/overline&gt; cross section at &lt;radical&gt;&lt;radicand&gt;s&lt;/radicand&gt;&lt;/radical&gt;approximate to 10.6 GeV 査読

    P. Pakhlov, H. Aihara, K. Arinstein, T. Aushev, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, K. Belous, V. Bhardwaj, A. Bondar, M. Bracko, J. Brodzicka, T. E. Browder, M. -C. Chang, P. Chang, A. Chen, B. G. Cheon, R. Chistov, S. -K. Choi, Y. Choi, M. Danilov, M. Dash, A. Drutskoy, W. Dungel, S. Eidelman, D. Epifanov, N. Gabyshev, P. Goldenzweig, B. Golob, H. Ha, B. -Y. Han, K. Hayasaka, H. Hayashii, M. Hazumi, Y. Horii, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, Y. Iwasaki, N. J. Joshi, D. H. Kah, H. Kaji, H. Kawai, T. Kawasai, H. Kichimi, H. O. Kim, Y. I. Kim, K. Kinoshita, B. R. Ko, S. Korpar, P. Krizan, P. Krokovny, A. Kuzmin, Y. -J. Kwon, S. -H. Kyeong, J. S. Lange, M. J. Lee, S. E. Lee, T. Lesiak, S. -W. Lin, Y. Liu, D. Liventsev, R. Louvot, F. Mandl, A. Matyja, S. McOnie, H. Miyata, Y. Miyazaki, R. Mizuk, Y. Nagasaka, M. Nakao, H. Nakazawa, K. Nishimura, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, H. Ozaki, G. Pakhlova, H. Palka, C. W. Park, H. Park, H. K. Park, K. S. Park, R. Pestotnik, L. E. Piilonen, A. Poluektov, H. Sahoo, Y. Sakai, O. Schneider, C. Schwanda, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, J. -G. Shiu, B. Shwartz, J. B. Singh, A. Sokolov, S. Stanic, M. Staric, T. Sumiyoshi, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, K. Trabelsi, T. Tsuboyama, S. Uehara, T. Uglov, Y. Unno, S. Uno, Y. Usov, G. Varner, K. Vervink, A. Vinokurova, C. H. Wang, P. Wang, Y. Watanabe, R. Wedd, E. Won, B. D. Yabsley, Y. Yamashita, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, T. Zivko, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW D   79 ( 7 )   1 - 7   2009年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present a new measurement of the e(+)e(-)-&gt; J/psi c(c)over bar cross section where the c(c)over bar pair can fragment either into charmed hadrons or a charmonium state. In the former case the J/psi and a charmed hadron are reconstructed, while the latter process is measured using the recoil mass technique, which allows the identification of two-body final states without reconstruction of one of the charmonia. The measured e(+)e(-)-&gt; J/psi c(c)over bar cross section is (0.74 +/- 0.08(-0.08)(+0.09)) pb, and the e(+)e(-)-&gt; J/psi Xnon-c(c)over bar cross section is (0.43 +/- 0.09 +/- 0.09) pb. We note that the measured cross sections are obtained from a data sample with the multiplicity of charged tracks in the event larger than 4; corrections for the effect of this requirement are not performed as this cannot be done in a model-independent way. The analysis is based on a data sample with an integrated luminosity of 673 fb(-1) recorded near the Upsilon(4S) resonance with the Belle detector at the KEKB e(+)e(-) asymmetric-energy collider.

    DOI: 10.1103/PhysRevD.79.071101

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  • Time-dependent Dalitz plot measurement of CP parameters in B-0 -&gt; K-S(0)pi(+)pi(-) decays 査読

    J. Dalseno, I. Adachi, H. Aihara, K. Arinstein, T. Aushev, A. M. Bakich, V. Balagura, A. Bay, V. Bhardwaj, U. Bitenc, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, Y. Chao, A. Chen, B. G. Cheon, I. -S. Cho, Y. Choi, M. Dash, A. Drutskoy, S. Eidelman, M. Fujikawa, N. Gabyshev, P. Goldenzweig, B. Golob, H. Ha, B. -Y. Han, K. Hara, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, Y. Horii, Y. Hoshi, W. -S. Hou, H. J. Hyun, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, D. H. Kah, J. H. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. O. Kim, Y. I. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Krizan, P. Krokovny, A. Kuzmin, Y. -J. Kwon, S. -H. Kyeong, J. S. Lee, S. E. Lee, J. Li, S. -W. Lin, C. Liu, R. Louvot, A. Matyja, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, Y. Nagasaka, Y. Nakahama, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, S. Okuno, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. K. Park, K. S. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, M. Rozanska, H. Sahoo, Y. Sakai, O. Schneider, C. Schwanda, A. J. Schwartz, A. Sekiya, K. Senyo, M. E. Sevior, M. Shapkin, J. -G. Shiu, B. Shwartz, J. B. Singh, A. Sokolov, S. Stanic, M. Staric, K. Sumisawa, T. Sumiyoshi, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, K. Trabelsi, S. Uehara, T. Uglov, Y. Unno, S. Uno, Y. Usov, G. Varner, K. Vervink, C. H. Wang, P. Wang, X. L. Wang, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamashita, Z. P. Zhang, V. Zhulanov, T. Zivko, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW D   79 ( 7 )   1 - 17   2009年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present a time-dependent Dalitz plot measurement of CP violation parameters in B-0 -&gt; K-S(0)pi(+)pi(-) decays. These results are obtained from a large data sample that contains 657x10(6) B(B)over bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. For the CP violation parameters, we obtain two consistent solutions that describe the data well. The first of these solutions may be preferred by external information from other measurements. There is no evidence for direct CP violation in B-0 -&gt;rho(0)(770)K-S(0), B-0 -&gt; f(0)(980)K-S(0) and B-0 -&gt; K*+(892)pi(-), while measurements of mixing-induced CP violation in B-0 -&gt;rho(0)(770)K-S(0) and B-0 -&gt; f(0)(980)K-S(0) decays are consistent with that of b -&gt; c(c)over bars decays. We also measured the phase difference between B-0 -&gt; K*+(892)pi(-) and (B)over bar(0)-&gt; K*-(892)pi(+), which may be used to extract phi(3).

    DOI: 10.1103/PhysRevD.79.072004

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  • Measurement of the branching fraction for the decay Gamma(4S) -&gt; Gamma(1S)pi(+) pi(-) 査読

    A. Sokolov, M. Shapkin, H. Aihara, K. Arinstein, T. Aushev, A. M. Bakich, E. Barberio, A. Bay, K. Belous, V. Bhardwaj, A. Bondar, M. Bracko, T. E. Browder, M. -C. Chang, P. Chang, A. Chen, K. -F. Chen, B. G. Cheon, C. -C. Chiang, R. Chistov, I. -S. Cho, Y. Choi, M. Dash, A. Drutskoy, W. Dungel, S. Eidelman, D. Epifanov, N. Gabyshev, P. Goldenzweig, H. Ha, J. Haba, B. -Y. Han, H. Hayashii, M. Hazumi, Y. Horii, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, Y. Iwasaki, N. J. Joshi, D. H. Kah, H. Kaji, J. H. Kang, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, H. O. Kim, S. K. Kim, Y. I. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, S. Korpar, P. Krizan, P. Krokovny, A. Kuzmin, Y. -J. Kwon, S. -H. Kyeong, J. S. Lange, M. J. Lee, S. E. Lee, T. Lesiak, J. Li, A. Limosani, S. -W. Lin, Y. Liu, D. Liventsev, R. Louvot, F. Mandl, A. Matyja, S. McOnie, H. Miyata, Y. Miyazaki, R. Mizuk, T. Mori, Y. Nagasaka, E. Nakano, M. Nakao, S. Nishida, O. Nitoh, S. Noguchi, S. Ogawa, T. Ohshima, S. Okuno, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, H. K. Park, K. S. Park, R. Pestotnik, L. E. Piilonen, A. Poluektov, H. Sahoo, Y. Sakai, O. Schneider, C. Schwanda, A. Sekiya, K. Senyo, M. E. Sevior, C. P. Shen, J. -G. Shiu, B. Shwartz, J. B. Singh, S. Stanic, M. Staric, T. Sumiyoshi, M. Tanaka, G. N. Taylor, Y. Teramoto, T. Tsuboyama, S. Uehara, T. Uglov, Y. Unno, S. Uno, Y. Usov, G. Varner, K. E. Varvell, K. Vervink, A. Vinokurova, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, R. Wedd, E. Won, B. D. Yabsley, Y. Yamashita, C. Z. Yuan, Z. P. Zhang, V. Zhilich, V. Zhulanov, T. Zivko, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW D   79 ( 5 )   1 - 5   2009年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We study transitions between Gamma states with the emission of charged pions using 604.6 fb(-1) of data collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The measured product branching fraction is B(Gamma(4S) -&gt; Gamma(1S)pi(+)pi(-)) x B(Gamma(1S) -&gt; mu(+)mu(-)) = (2.11 +/- 0.30(stat) +/- 0.14(sys)) x 10(-6) and the partial decay width is Gamma(Gamma(4S) -&gt; Gamma(1S)pi(+)pi(-)) = 1.75 +/- 0.25(stat) +/- 0.24(sys)) keV.

    DOI: 10.1103/PhysRevD.79.051103

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  • Study of Omega(0)(c) and Omega(c)*(0) baryons at Belle 査読

    E. Solovieva, R. Chistov, I. Adachi, H. Aihara, K. Arinstein, T. Aushev, A. M. Bakich, V. Balagura, U. Bitenc, A. Bondar, M. Bracko, J. Brodzicka, T. E. Browder, P. Chang, A. Chen, B. G. Cheon, I. -S. Cho, S. -K. Choi, Y. Choi, J. Dalseno, M. Danilov, M. Dash, S. Eidelman, H. Ha, K. Hayasaka, M. Hazumi, D. Heffernan, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, D. H. Kah, J. H. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, H. O. Kim, Y. I. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kumar, A. Kuzmin, Y. -J. Kwon, S. -H. Kyeong, J. S. Lange, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, C. Liu, D. Liventsev, A. Matyja, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, Y. Nagasaka, M. Nakao, S. Nishidai, O. Nitoh, S. Noguchi, S. Ogawa, T. Ohshima, S. Okuno, P. Pakhlov, G. Pakhlova, H. Palka, H. K. Park, L. S. Peak, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, C. Schwanda, K. Senyo, M. E. Sevior, M. Shapkin, J. -G. Shiu, S. Stanic, M. Staric, T. Sumiyoshi, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, C. H. Wang, P. Wang, X. L. Wang, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamashita, M. Yamauchi, Z. P. Zhang, V. Zhulanov, T. Zivko, A. Zupanc, O. Zyukova

    PHYSICS LETTERS B   672 ( 1 )   1 - 5   2009年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

    We report results from a study of the charmed double strange baryons Omega(0)(c) and Omega(c)*(0) at Belle. The Omega(0)(c) is reconstructed using the Omega(0)(c) -&gt; Omega(-)pi(+) decay mode, and its mass is measured to be (2693.6 +/- 0.3(-1.5)(+1.8)) MeV/c(2). The Omega(c)*(0) baryon is reconstructed in the Omega(0)(c)gamma mode. The mass difference M-Omega c*0 - M-Omega c0 is measured to be (70.7 +/- 0.9(-0.9)(+0.1)) MeV/c(2). The analysis is performed using 673 fb(-1) of data on and near the gamma(4S) collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. (C) 2008 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.physletb.2008.12.062

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  • Measurement of the Decay B-s(0) -&gt; D-s(-)pi(+) and Evidence for B-s(0) -&gt; (DsK +/-)-K--/+ in e(+) e(-) Annihilation at root s approximate to 10.87 GeV 査読

    R. Louvot, J. Wicht, O. Schneider, I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, A. M. Bakich, V. Balagura, A. Bay, V. Bhardwaj, U. Bitenc, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, A. Chen, B. G. Cheon, R. Chistov, I. -S. Cho, Y. Choi, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, W. Dungel, S. Eidelman, N. Gabyshev, P. Goldenzweig, B. Golob, H. Ha, J. Haba, K. Hayasaka, H. Hayashii, M. Hazumi, Y. Hoshi, W. -S. Hou, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, N. J. Joshi, D. H. Kah, J. H. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, S. K. Kim, Y. I. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kumar, A. Kuzmin, Y. -J. Kwon, S. -H. Kyeong, J. S. Lange, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, J. Li, A. Limosani, S. -W. Lin, D. Liventsev, F. Mandl, A. Matyja, S. McOnie, T. Medvedeva, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, T. Mori, E. Nakano, M. Nakao, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, H. Ozaki, G. Pakhlova, C. W. Park, H. K. Park, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, J. Schumann, A. J. Schwartz, A. Sekiya, K. Senyo, M. E. Sevior, M. Shapkin, J. -G. Shiu, J. B. Singh, A. Somov, S. Stanic, M. Staric, K. Sumisawa, T. Sumiyoshi, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, K. Trabelsi, S. Uehara, T. Uglov, Y. Unno, S. Uno, Y. Usov, G. Varner, K. Vervink, C. C. Wang, C. H. Wang, P. Wang, X. L. Wang, Y. Watanabe, R. Wedd, E. Won, B. D. Yabsley, Y. Yamashita, M. Yamauchi, Z. P. Zhang, V. Zhilich, V. Zhulanov, T. Zivko, A. Zupanc, N. Zwahlen, O. Zyukova

    PHYSICAL REVIEW LETTERS   102 ( 2 )   1 - 6   2009年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We have studied B-s(0) -&gt; D-s(-)pi(+) and B-s(0) -&gt; (DsK +/-)-K--/+ decays using 23.6 fb(-1) of data collected at the Y(5S) resonance with the Belle detector at the KEKB e(+) e(-) collider. This highly pure B-s(0) -&gt; D-s(-)pi(+) sample is used to measure the branching fraction, B(B-s(0) -&gt; D-s(-)pi(+)) = [3.67(-0.33)(+0.35)(stat)(-0.42)(+0.43)(syst) +/- 0.49(f(s))] x 10(-3) (f(s) = N-Bs(*)(B) over bars(*)/N-b (b) over bar and the fractions of B-s(0) event types at the Y(d5S) energy, in particular N-Bs(*)(B) over bars(*)/N-Bs(*)(B) over bars(*) = (90.1(-4.0)(+3.8) +/- 0.2)%. We also determine the masses M(B-s(0)) = (5364.4 +/- 1.3 +/- 0.7) MeV/c(2) and M(B-s*) = (5416.4 +/- 0.4 +/- 0.5) MeV/c(2). In addition, we observe B-s(0) -&gt; (DsK +/-)-K--/+ decays with a significance of 3.5 sigma and measure B(B-s(0) -&gt; (DsK +/-)-K--/+) = [2.4-1.0+1.2(stat) +/- 0.3(syst) +/- 0.3(f(s))] x 10(-4).

    DOI: 10.1103/PhysRevLett.102.021801

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  • Search for Astrophysical Neutrino Point Sources at Super-Kamiokande 査読

    Thrane, E., Abe, K., Hayato, Y., Iida, T., Ikeda, M., Kameda, J., Kobayashi, K., Koshio, Y., Miura, M., Moriyama, S., Nakahata, M., Nakayama, S., Obayashi, Y., Ogawa, H., Sekiya, H., Shiozawa, M., Suzuki, Y., Takeda, A., Takenaga, Y., Takeuchi, Y., Ueno, K., Ueshima, K., Watanabe, H., Yamada, S., Vagins, M.R., Hazama, S., Higuchi, I., Ishihara, C., Kajita, T., Kaneyuki, K., Mitsuka, G., Nishino, H., Okumura, K., Tanimoto, N., Dufour, F., Kearns, E., Litos, M., Raaf, J.L., Stone, J.L., Sulak, L.R., Goldhaber, M., Bays, K., Casper, D., Cravens, J.P., Kropp, W.R., Mine, S., Regis, C., Smy, M.B., Sobel, H.W., Ganezer, K.S., Hill, J., Keig, W.E., Jang, J.S., Jeong, I.S., Kim, J.Y., Lim, I.T., Fechner, M., Scholberg, K., Walter, C.W., Wendell, R., Tasaka, S., Learned, J.G., Matsuno, S., Watanabe, Y., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nishikawa, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Suzuki, A.T., Ichikawa, A.K., Minamino, A., Nakaya, T., Yokoyama, M., Dazeley, S., Svoboda, R., Habig, A., Fukuda, Y., Itow, Y., Tanaka, T., Jung, C.K., Lopez, G., McGrew, C., Yanagisawa, C., Tamura, N., Idehara, Y., Ishino, H., Kibayashi, A., Sakuda, M., Kuno, Y., Yoshida, M., Kim, S.B., Yang, B.S., Ishizuka, T., Okazawa, H., Choi, Y., Seo, H.K., Furuse, Y., Nishijima, K., Yokosawa, Y., Koshiba, M., Totsuka, Y., Chen, S., Gong, G., Heng, Y., Xue, T., Yang, Z., Zhang, H., Kielczewska, D., Mijakowski, P., Connolly, K., Dziomba, M., Wilkes, R.J.

    Astrophys.J.   704 ( 1 )   503 - 512   2009年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1088/0004-637X/704/1/503

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  • Search for Neutrinos from GRB 080319B at Super-Kamiokande 査読

    Thrane, E., Abe, K., Hayato, Y., Iida, T., Ikeda, M., Kameda, J., Kobayashi, K., Koshio, Y., Miura, M., Moriyama, S., Nakahata, M., Nakayama, S., Obayashi, Y., Ogawa, H., Sekiya, H., Shiozawa, M., Suzuki, Y., Takeda, A., Takenaga, Y., Takeuchi, Y., Ueno, K., Ueshima, K., Watanabe, H., Yamada, S., Vagins, M.R., Hazama, S., Higuchi, I., Ishihara, C., Kajita, T., Kaneyuki, K., Mitsuka, G., Nishino, H., Okumura, K., Tanimoto, N., Dufour, F., Kearns, E., Litos, M., Raaf, J.L., Stone, J.L., Sulak, L.R., Goldhaber, M., Bays, K., Casper, D., Cravens, J.P., Kropp, W.R., Mine, S., Regis, C., Smy, M.B., Sobel, H.W., Ganezer, K.S., Hill, J., Keig, W.E., Jang, J.S., Jeong, I.S., Kim, J.Y., Lim, I.T., Fechner, M., Scholberg, K., Walter, C.W., Wendell, R., Tasaka, S., Learned, J.G., Matsuno, S., Watanabe, Y., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nishikawa, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Suzuki, A.T., Ichikawa, A.K., Minamino, A., Nakaya, T., Yokoyama, M., Dazeley, S., Svoboda, R., Habig, A., Fukuda, Y., Itow, Y., Tanaka, T., Jung, C.K., Lopez, G., McGrew, C., Yanagisawa, C., Tamura, N., Idehara, Y., Ishino, H., Kibayashi, A., Sakuda, M., Kuno, Y., Yoshida, M., Kim, S.B., Yang, B.S., Ishizuka, T., Okazawa, H., Choi, Y., Seo, H.K., Furuse, Y., Nishijima, K., Yokosawa, Y., Koshiba, M., Totsuka, Y., Chen, S., Gong, G., Heng, Y., Xue, T., Yang, Z., Zhang, H., Kielczewska, D., Mijakowski, P., Berns, H.G., Connolly, K., Dziomba, M., Wilkes, R.J.

    Astrophys.J.   697 ( 1 )   730 - 734   2009年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1088/0004-637X/697/1/730

    arXiv

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  • First Study of Neutron Tagging with a Water Cherenkov Detector 査読

    Watanabe, H., Zhang, H., Abe, K., Hayato, Y., Iida, T., Ikeda, M., Kameda, J., Kobayashi, K., Koshio, Y., Miura, M., Moriyama, S., Nakahata, M., Nakayama, S., Obayashi, Y., Ogawa, H., Sekiya, H., Shiozawa, M., Suzuki, Y., Takeda, A., Takenaga, Y., Takeuchi, Y., Ueno, K., Ueshima, K., Yamada, S., Hazama, S., Higuchi, I., Ishihara, C., Kajita, T., Kaneyuki, K., Mitsuka, G., Nishino, H., Okumura, K., Tanimoto, N., Clark, S., Desai, S., Dufour, F., Kearns, E., Likhoded, S., Litos, M., Raaf, J., Stone, J.L., Sulak, L.R., Wang, W., Goldhaber, M., Bays, K., Casper, D., Cravens, J.P., Dunmore, J., Griskevich, J., Kropp, W.R., Liu, D.W., Mine, S., Regis, C., Smy, M.B., Sobel, H.W., Ganezer, K.S., Hill, J., Keig, W.E., Jang, J.S., Jeong, I.S., Kim, J.Y., Lim, I.T., Fechner, M., Scholberg, K., Walter, C.W., Wendel, R., Tasaka, S., Guillian, G., Learned, J.G., Matsuno, S., Messier, M.D., Watanabe, Y., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nishikawa, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Suzuki, A.T., Ichikawa, A.K., Minamino, A., Nakaya, T., Yokoyama, M., Haines, T.J., Dazeley, S., Svoboda, R., Gran, R., Habig, A., Fukuda, Y., Itow, Y., Tanaka, T., Jung, C.K., McGrew, C., Sarrat, A., Terri, R., Yanagisawa, C., Tamura, N., Idehara, Y., Ishino, H., Kibayashi, A., Sakuda, M., Kuno, Y., Yoshida, M., Kim, S.B., Yang, B.S., Ishizuka, T., Okazawa, H., Choi, Y., Seo, H.K., Furuse, Y., Nishijima, K., Yokosawa, Y., Koshiba, M., Totsuka, Y., Vagins, M.R., Chen, S., Deng, Z., Gong, G., Liu, Y., Xue, T., Kielczewska, D., Berns, H.G., Shiraishi, K.K., Thrane, E., Wilkes, R.J.

    Astropart.Phys.   31 ( 4 )   320 - 328   2009年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.astropartphys.2009.03.002

    arXiv

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  • Search for a CP asymmetry in Cabibbo-suppressed D-0 decays 査読

    M. Staric, I. Adachi, H. Aihara, K. Arinstein, T. Aushev, A. M. Bakich, E. Barberio, A. Bay, I. Bedny, K. Belous, V. Bhardwaj, U. Bitenc, A. Bondar, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, P. Chang, Y. Chao, A. Chen, K. -F. Chen, B. G. Cheon, R. Chistov, I-S. Chou, Y. Choi, J. Dalseno, M. Dash, W. Dungel, S. Eidelman, S. Fratina, N. Gabyshev, B. Golob, H. Ha, J. Haba, T. Hara, Y. Hasegawa, K. Hayasaka, H. Hayashii, M. Hazurmi, D. Heffernan, Y. Hoshi, W. -S. Hou, H. J. Hyun, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, D. H. Kah, H. Kaji, T. Kawasaki, H. Kichimi, H. J. Kim, H. O. Kim, S. K. Kim, Y. I. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kumar, A. Kuzmin, Y. -J. Kwon, S. -H Kyeong, J. S. Lange, M. J. Lee, S. E. Lee, T. Lesiak, A. Limosani, C. Liu, Y. Liu, D. Liventsev, F. Mandl, A. Matyja, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, G. R. Moloney, T. Mori, T. Nagamine, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, T. Ohshima, S. Okuno, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Palka, C. W. Park, H. Park, H. K. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, A. Poluektov, H. Sahoo, Y. Sakai, O. Schneider, J. Schuemann, C. Schwanda, A. J. Schwartz, A. Sekiya, K. Senyo, M. E. Sevior, M. Shapkin, J. -G. Shiu, B. Shwartz, J. B. Singh, A. Sokolov, A. Somov, S. Stanic, T. Sumiyoshi, F. Takasaki, M. Tanaka, G. N. Taylor, Y. Teramoto, K. Trabelsi, T. Tsuboyama, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. Vervink, C. H. Wang, P. Wang, X. L. Wang, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamashita, C. Z. Yuan, C. C. Zhang, Z. P. Zhang, V. Zhilich, T. Zivko, A. Zupanc, O. Zyukova

    PHYSICS LETTERS B   670 ( 3 )   190 - 195   2008年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

    We measure the CP-violating asymmetries in decays to the D-0 -&gt; K+K- and D-0 -&gt; pi(+)pi(-) CP eigenstates using 540 fb(-1) of data collected with the Belle detector at or near the gamma (4S) resonance. Cabibbo-favored D-0 -&gt; K-pi(+) decays are used to correct for systematic detector effects. The results, A(CP)(KK) = (-0.43 +/- 0.30 +/- 0.11)% and A(CP)(pi pi) = (+0.43 +/- 0.52 +/-.12)%, are consistent with no CP violation. (c) 2008 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.physletb.2008.10.052

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  • Measurement of B-0 -&gt; pi(+)pi(-)pi(+)pi(-) decays and search for B-0 -&gt; rho(0)rho(0) 査読

    C. -C. Chiang, I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, A. M. Bakich, I. Bedny, V. Bhardwaj, U. Bitenc, A. Bozek, M. Bracko, T. E. Browder, P. Chang, Y. Chao, A. Chen, B. G. Cheon, R. Chistov, I. -S. Cho, S. -K. Choi, Y. Choi, J. Dalseno, M. Dash, W. Dungel, S. Eidelman, N. Gabyshev, P. Goldenzweig, B. Golob, H. Ha, J. Haba, T. Hara, K. Hayasaka, M. Hazumi, D. Heffernan, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, D. H. Kah, J. H. Kang, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, H. O. Kim, S. K. Kim, Y. I. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kumar, Y. -J. Kwon, S. -H. Kyeong, J. S. Lange, J. S. Lee, S. E. Lee, J. Li, A. Limosani, S. -W. Lin, C. Liu, D. Liventsev, F. Mandl, A. Matyja, S. McOnie, H. Miyata, R. Mizuk, T. Mori, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, H. K. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, J. Schumann, C. Schwanda, A. J. Schwartz, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, J. -G. Shiu, B. Shwartz, J. B. Singh, A. Somov, S. Stanic, M. Staric, T. Sumiyoshi, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, K. Trabelsi, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. E. Varvell, K. Vervink, A. Vinokurova, C. C. Wang, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, R. Wedd, J. Wicht, E. Won, B. D. Yabsley, Y. Yamashita, M. Yamauchi, Z. P. Zhang, V. Zhilich, V. Zhulanov, T. Zivko, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW D   78 ( 11 )   1 - 7   2008年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report on a search for the decay B-0 -&gt; rho(0)rho(0) and other charmless modes with a pi(+)pi(-)pi(+)pi(-) final state, including B-0 -&gt; rho(0)pi(+)pi(-), nonresonant B-0 -&gt; 4 pi(+/-), B-0 -&gt; rho(0)f(0)(980), B-0 -&gt; f(0)( 980)f(0)(980) and B-0 -&gt; f(0)(980)pi(+)pi(-). These results are obtained from a data sample containing 657 X 10(6) B (B) over bar collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We set an upper limit on B(B-0 -&gt; rho(0)rho(0)) of 1.0 X 10(-6) at the 90% confidence level (C. L.). From our B-0 -&gt; rho(0)rho(0) measurement and an isospin analysis, we determine the Cabibbo-Kobayashi-Maskawa phase phi(2) to be 91.7 +/- 14.9 degrees. We find excesses in B-0 -&gt; rho(0)pi(+)pi(-) and nonresonant B-0 -&gt; 4 pi(+/-) with 1.3 sigma and 2.5 sigma significance, respectively. The corresponding branching fractions are less than 12.0 X 10(-6) and 19.3 X 10(-6) at the 90% C.L. In addition, we set 90% C.L. upper limits as follows: B(B-0 -&gt; rho(0)f(0)(980)) &lt; 0.3 X 10(-6), B(B-0 -&gt; f(0)(980)f(0)(980)) &lt; 0.1 X 10(-6), and B(B-0 -&gt; f(0)(980)pi(+)pi(-)) &lt; 3.8 X 10(-6).

    DOI: 10.1103/PhysRevD.78.111102

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  • Evidence for Neutral B Meson Decays to omega K*(0) 査読

    P. Goldenzweig, A. J. Schwartz, I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, S. Bahinipati, A. M. Bakich, A. Bay, I. Bedny, V. Bhardwaj, U. Bitenc, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, P. Chang, Y. Chao, A. Chen, K. -F. Chen, B. G. Cheon, C. -C. Chiang, R. Chistov, I. -S. Cho, Y. Choi, J. Dalseno, M. Dash, A. Drutskoy, S. Eidelman, B. Golob, H. Ha, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, M. Iwasaki, D. H. Kah, J. H. Kang, T. Kawasaki, H. Kichimi, H. J. Kim, S. K. Kim, Y. I. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kumar, A. Kuzmin, Y. -J. Kwon, S. -H. Kyeong, J. S. Lange, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, J. Li, A. Limosani, S. -W. Lin, C. Liu, Y. Liu, J. MacNaughton, F. Mandl, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, T. Nagamine, E. Nakano, M. Nakao, H. Nakazawa, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Palka, C. W. Park, H. Park, H. K. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, J. Schuemann, C. Schwanda, R. Seidl, A. Sekiya, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, C. P. Shen, J. -G. Shiu, J. B. Singh, A. Somov, S. Stanic, M. Staric, K. Sumisawa, T. Sumiyoshi, S. Suzuki, N. Tamura, M. Tanaka, Y. Teramoto, I. Tikhomirov, K. Trabelsi, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. E. Varvell, K. Vervink, C. C. Wang, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, R. Wedd, J. Wicht, E. Won, B. D. Yabsley, Y. Yamashita, M. Yamauchi, C. C. Zhang, Z. P. Zhang, V. Zhulanov, T. Zivko, A. Zupanc, O. Zyukova, Belle Collaboration

    PHYSICAL REVIEW LETTERS   101 ( 23 )   1 - 6   2008年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present the results of a study of the charmless vector-vector decay B-0 -&gt; omega K*(0) with 657 X 10(6) B (B) over bar pairs collected with the Belle detector at the KEKB e(+)e(-) collider. We measure the branching fraction to be B(B-0 -&gt; omega K*(0)) = [1.8 +/- 0.7(stat) +/- 0.3(syst)] X 10(-6) with 3.0 sigma significance. We also perform a helicity analysis of the omega and K*(0) vector mesons, and obtain the longitudinal polarization fraction f(L)(B-0 -&gt; omega K*(0)) = 0.56 +/- 0.29(stat)(-0.08)(+0.18)(syst). Finally, we measure a large nonresonant branching fraction B[B-0 -&gt; omega K+ pi(-); M-K pi is an element of (0.755, 1.250) GeV/c(2)] = [5.1 +/- 0.7(stat) +/- 0.7(syst)] X 10(-6) with a significance of 9.5 sigma.

    DOI: 10.1103/PhysRevLett.101.231801

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  • Evidence for B-0 -&gt; chi(c1)pi(0) at Belle 査読

    R. Kumar, J. B. Singh, I. Adachi, H. Aihara, K. Arinstein, T. Aushev, T. Aziz, A. M. Bakich, V. Balagura, A. Bay, V. Bhardwaj, U. Bitenc, A. Bozek, M. Bracko, T. E. Browder, A. Chen, B. G. Cheon, R. Chistov, I. -S. Cho, Y. Choi, J. Dalseno, M. Dash, A. Drutskoy, W. Dungel, S. Eidelman, N. Gabyshev, P. Goldenzweig, B. Golob, H. Ha, J. Haba, K. Hayasaka, H. Hayashii, M. Hazumi, Y. Horii, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, D. H. Kah, J. H. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, S. K. Kim, Y. I. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, A. Kuzmin, Y. -J. Kwon, S. -H. Kyeong, J. S. Lange, J. S. Lee, M. J. Lee, A. Limosani, S. -W. Lin, D. Liventsev, R. Louvot, F. Mandl, A. Matyja, S. McOnie, T. Medvedeva, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, T. Mori, I. Nakamura, E. Nakano, H. Nakazawa, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, H. K. Park, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, A. Sekiya, K. Senyo, M. Shapkin, J. -G. Shiu, B. Shwartz, A. Somov, S. Stanic, M. Staric, T. Sumiyoshi, S. Suzuki, M. Tanaka, G. N. Taylor, Y. Teramoto, K. Trabelsi, S. Uehara, Y. Unno, S. Uno, Y. Usov, G. Varner, K. Vervink, C. C. Wang, C. H. Wang, M. -Z. Wang, P. Wang, Y. Watanabe, R. Wedd, E. Won, Y. Yamashita, C. C. Zhang, Z. P. Zhang, V. Zhulanov, T. Zivko, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW D   78 ( 9 )   1 - 6   2008年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present a measurement of the branching fraction for the Cabibbo- and color-suppressed B-0 -&gt; chi(c1)pi(0) decay based on a data sample of 657 x 10(6) B (B) over bar events collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We observe a signal of 40 +/- 9 events with a significance of 4.7 sigma including systematic uncertainties. The measured branching fraction is B(B-0 -&gt; chi(c1)pi(0)) = (1.12 +/- 0.25 (stat) +/- 0.12(syst.)) x 10(-5).

    DOI: 10.1103/PhysRevD.78.091104

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  • High-statistics study of the tau(-)-&gt;pi(-)pi(0)nu(tau) decay 査読

    M. Fujikawa, H. Hayashii, S. Eidelman, I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, I. Bedny, K. Belous, V. Bhardwaj, U. Bitenc, A. Bondar, M. Bracko, J. Brodzicka, T. E. Browder, P. Chang, Y. Chao, A. Chen, B. G. Cheon, R. Chistov, I. -S. Cho, Y. Choi, J. Dalseno, M. Dash, D. Epifanov, N. Gabyshev, B. Golob, H. Ha, J. Haba, K. Hara, Y. Hasegawa, K. Hayasaka, M. Hazumi, D. Heffernan, Y. Hoshi, W. -S. Hou, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwabuchi, M. Iwasaki, D. H. Kah, H. Kaji, S. U. Kataoka, T. Kawasaki, H. Kichimi, H. O. Kim, S. K. Kim, Y. I. Kim, Y. J. Kim, S. Korpar, P. Krizan, P. Krokovny, R. Kumar, A. Kuzmin, Y. -J. Kwon, S. -H. Kyeong, J. S. Lange, M. J. Lee, S. E. Lee, A. Limosani, C. Liu, Y. Liu, D. Liventsev, J. MacNaughton, F. Mandl, A. Matyja, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, T. Mori, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, T. Ohshima, S. Okuno, S. L. Olsen, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Palka, C. W. Park, H. Park, H. K. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, A. Poluektov, H. Sahoo, Y. Sakai, O. Schneider, A. J. Schwartz, R. Seidl, A. Sekiya, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, C. P. Shen, J. -G. Shiu, B. Shwartz, J. B. Singh, A. Sokolov, S. Stanic, M. Staric, T. Sumiyoshi, F. Takasaki, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, K. Trabelsi, T. Tsuboyama, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. Vervink, A. Vinokurova, C. H. Wang, P. Wang, X. L. Wang, Y. Watanabe, E. Won, Y. Yamashita, M. Yamauchi, C. Z. Yuan, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, T. Zivko, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW D   78 ( 7 )   1 - 22   2008年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a high-statistics measurement of the branching fraction for tau(-)-&gt;pi(-)pi(0)nu(tau) and the invariant mass spectrum of the produced pi(-)pi(0) system using 72.2 fb(-1) of data recorded with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The branching fraction obtained is (25.24 +/- 0.01 +/- 0.39)%, where the first error is statistical and the second is systematic. The unfolded pi(-)pi(0) mass spectrum is used to determine resonance parameters for the rho(770), rho(')(1450), and rho('')(1700) mesons. We also use this spectrum to estimate the hadronic (2 pi) contribution to the anomalous magnetic moment of the muon (a(mu)(pi pi)). Our result for a(mu)(pi pi) integrated over the mass range root s=2m(pi)-1.8 GeV/c(2) is a(mu)(pi pi)=(523.5 +/- 1.5(exp)+/- 2.6(Br)+/- 2.5(isospin))x10(-10), where the first error is due to the experimental uncertainties, the second is due to the uncertainties in the branching fractions, and the third is due to the uncertainties in the isospin-violating corrections.

    DOI: 10.1103/PhysRevD.78.072006

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  • Observation of two resonancelike structures in the pi(+)chi(c1) mass distribution in exclusive (B)overbar(0)-&gt; K-pi(+)chi(c1) decays 査読

    R. Mizuk, R. Chistov, I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, V. Bhardwaj, U. Bitenc, A. Bondar, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, M. -C. Chang, P. Chang, A. Chen, K. -F. Chen, B. G. Cheon, C. -C. Chiang, I. -S. Cho, S. -K. Choi, Y. Choi, J. Dalseno, M. Danilov, A. Drutskoy, S. Eidelman, D. Epifanov, P. Goldenzweig, B. Golob, H. Ha, J. Haba, K. Hayasaka, H. Hayashii, M. Hazumi, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, D. H. Kah, H. Kaji, J. H. Kang, T. Kawasaki, H. Kichimi, H. J. Kim, H. O. Kim, Y. I. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kumar, A. Kuzmin, Y. -J. Kwon, S. -H. Kyeong, J. S. Lange, J. S. Lee, M. J. Lee, S. -W. Lin, C. Liu, Y. Liu, D. Liventsev, F. Mandl, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, E. Nakano, M. Nakao, H. Nakazawa, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Palka, C. W. Park, H. Park, H. K. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, A. Poluektov, H. Sahoo, Y. Sakai, O. Schneider, A. J. Schwartz, K. Senyo, J. -G. Shiu, B. Shwartz, J. B. Singh, A. Sokolov, A. Somov, S. Stanic, M. Staric, T. Sumiyoshi, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, K. Trabelsi, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. E. Varvell, K. Vervink, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, J. Wicht, E. Won, B. D. Yabsley, Y. Yamashita, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, T. Zivko, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW D   78 ( 7 )   1 - 14   2008年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the first observation of two resonancelike structures in the pi(+)chi(c1) invariant mass distribution near 4.1 GeV/c(2) in exclusive (B)overbar(0)-&gt; K-pi(+)chi(c1) decays. From a Dalitz plot analysis in which the pi(+)chi(c1) mass structures are represented by Breit-Wigner resonance amplitudes, we determine masses and widths of: M-1=(4051 +/- 14(-41)(+20)) MeV/c(2), Gamma(1)=(82(-17-22)(+21+47)) MeV, M-2=(4248(-29-35)(+44+180)) MeV/c(2), and Gamma(2)=(177(-39-61)(+54+316)) MeV; and product branching fractions of B((B)overbar(0)-&gt; K(-)Z(1,2)(+))xB(Z(1,2)(+)-&gt;pi(+)chi(c1))=(3.0(-0.8-1.6)(+1.5+3.7))x10(-5) and (4.0(-0.9-0.5)(+2.3+19.7))x10(-5), respectively. Here the first uncertainty is statistical, the second is systematic. The significance of each of the pi(+)chi(c1) structures exceeds 5 sigma, including the systematic uncertainty from various fit models. This analysis is based on 657x10(6) B(B)overbar events collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider.

    DOI: 10.1103/PhysRevD.78.072004

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  • Study of the suppressed B meson decay B--&gt; DK-, D -&gt; K+pi(-) 査読

    Y. Horii, K. Trabelsi, H. Yamamoto, I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, V. Balagura, E. Barberio, I. Bedny, K. Belous, V. Bhardwaj, U. Bitenc, S. Blyth, A. Bozek, M. Bracko, T. E. Browder, Y. Chao, A. Chen, W. T. Chen, B. G. Cheon, R. Chistov, I.-S. Cho, S.-K. Choi, Y. Choi, J. Dalseno, M. Dash, S. Eidelman, N. Gabyshev, H. Ha, J. Haba, T. Hara, K. Hayasaka, M. Hazumi, D. Heffernan, Y. Hoshi, W.-S. Hou, H. J. Hyun, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwabuchi, M. Iwasaki, Y. Iwasaki, D. H. Kah, H. Kaji, J. H. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, C. C. Kuo, Y. Kuroki, A. Kuzmin, Y.-J. Kwon, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, J. Li, S.-W. Lin, C. Liu, D. Liventsev, F. Mandl, S. McOnie, T. Medvedeva, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, T. Nagamine, Y. Nagasaka, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, H. Ozaki, G. Pakhlova, C. W. Park, H. Park, H. K. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, C. Schwanda, A. J. Schwartz, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, J.-G. Shiu, A. Somov, S. Stanic, M. Staric, T. Sumiyoshi, S. Suzuki, F. Takasaki, N. Tamura, M. Tanaka, Y. Teramoto, T. Tsuboyama, S. Uehara, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. E. Varvell, K. Vervink, C. H. Wang, M.-Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, R. Wedd, E. Won, Y. Yamashita, M. Yamauchi, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW D   78 ( 7 )   1 - 7   2008年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a study of the suppressed B meson decay B--&gt; DK- followed by D -&gt; K+pi(-), where D indicates a D-0 or (D)overbar(0) state. The two decay paths interfere and provide information on the CP-violating angle phi(3). We use a data sample containing 657x10(6) B(B)overbar pairs recorded at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) storage ring. We do not find significant evidence for the mode B--&gt; DK-, D -&gt; K+pi(-), and set an upper limit of r(B)&lt; 0.19, where r(B) is the magnitude of the ratio of amplitudes vertical bar A(B--&gt;(D)K-0(-))/A(B--&gt;(DK-)-K-0)vertical bar. The decay B--&gt; D pi(-), D -&gt; K+pi(-) is also analyzed as a reference, for which we observe a signal with 6.6 sigma significance, and measure the charge asymmetry A(D pi) to be -0.02(-0.16)(+0.15)(stat)+/- 0.04(syst). In addition, the ratio B(B--&gt;(DK-)-K-0)/B(B--&gt; D-0 pi(-)) is measured to be [6.77 +/- 0.23(stat)+/- 0.30(syst)]x10(-2).

    DOI: 10.1103/PhysRevD.78.071901

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  • Observation of a Near-Threshold Enhancement in the e(+) e(-)-&gt; Lambda(+)(c) Lambda(-)(c) Cross Section Using Initial-State Radiation 査読

    G. Pakhlova, I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, A. M. Bakich, V. Balagura, I. Bedny, V. Bhardwaj, U. Bitenc, A. Bondar, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, P. Chang, A. Chen, B. G. Cheon, C. -C. Chiang, R. Chistov, I. -S. Cho, S. -K. Choi, Y. Choi, J. Dalseno, M. Danilov, M. Dash, S. Eidelman, N. Gabyshev, H. Ha, J. Haba, K. Hayasaka, M. Hazumi, D. Heffernan, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, D. H. Kah, J. H. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, H. O. Kim, S. K. Kim, Y. I. Kim, Y. J. Kim, K. Kinoshita, P. Krizan, P. Krokovny, R. Kumar, A. Kuzmin, Y. -J. Kwon, S. -H. Kyeong, J. S. Lange, J. S. Lee, S. E. Lee, T. Lesiak, J. Li, A. Limosani, C. Liu, D. Liventsev, F. Mandl, A. Matyja, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, T. Mori, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, H. Park, H. K. Park, L. S. Peak, L. E. Piilonen, A. Poluektov, H. Sahoo, Y. Sakai, O. Schneider, K. Senyo, M. Shapkin, C. P. Shen, J. -G. Shiu, B. Shwartz, J. B. Singh, A. Sokolov, S. Stanic, M. Staric, T. Sumiyoshi, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, R. Wedd, E. Won, B. D. Yabsley, Y. Yamashita, M. Yamauchi, C. Z. Yuan, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, T. Zivko, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW LETTERS   101 ( 17 )   1 - 6   2008年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a measurement of the exclusive e(+) e(-) -&gt; Lambda(+)(c)Lambda(-)(c) cross section as a function of center-of-mass energy near the Lambda(+)(c)Lambda(-)(c) threshold. A clear peak with a significance of 8.2 sigma is observed in the Lambda(+)(c)Lambda(-)(c) invariant mass distribution just above threshold. With an assumption of a resonance origin for the observed peak, a mass and width of M = [4634(-7)(+8)(stat)(-8)(+5)(syst)] MeV/c(2) and Gamma(tot) = [92(-24)(+40)(stat)(-21)(+10)(syst)] MeV are determined. The analysis is based on a study of events with initial-state-radiation photons in a data sample collected with the Belle detector at the Upsilon(4S) resonance and nearby continuum with an integrated luminosity of 695 fb(-1) at the KEKB asymmetric-energy e(+)e(-) collider.

    DOI: 10.1103/PhysRevLett.101.172001

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  • Observation of B-+/--&gt;psi(2S)pi(+/-) and search for direct CP violation 査読

    V. Bhardwaj, R. Kumar, J. B. Singh, I. Adachi, H. Aihara, K. Arinstein, T. Aushev, T. Aziz, S. Bahinipati, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, K. Belous, U. Bitenc, A. Bondar, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, M. -C. Chang, P. Chang, A. Chen, B. G. Cheon, R. Chistov, I. -S. Cho, S. -K. Choi, Y. Choi, J. Dalseno, M. Dash, A. Drutskoy, S. Eidelman, P. Goldenzweig, B. Golob, H. Ha, T. Hara, K. Hayasaka, H. Hayashii, M. Hazumi, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, N. J. Joshi, D. H. Kah, J. H. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. O. Kim, S. K. Kim, Y. I. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, A. Kuzmin, Y. -J. Kwon, S. -H. Kyeong, J. S. Lange, J. S. Lee, S. -W. Lin, C. Liu, Y. Liu, D. Liventsev, F. Mandl, A. Matyja, S. McOnie, T. Medvedeva, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, Y. Nagasaka, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, H. K. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, J. Schuemann, C. Schwanda, A. J. Schwartz, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, J. -G. Shiu, B. Shwartz, A. Somov, S. Stanic, M. Staric, T. Sumiyoshi, S. Suzuki, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, K. Trabelsi, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, G. Varner, K. E. Varvell, K. Vervink, C. C. Wang, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, E. Won, Y. Yamashita, M. Yamauchi, C. C. Zhang, V. Zhulanov, T. Zivko, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW D   78 ( 5 )   1 - 6   2008年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the first observation of B-+/- -&gt; psi(2S)pi(+/-), a Cabibbo- and color-suppressed decay. This analysis is based on 657 x 10(6) B (B) over bar B events collected at the Y(4S) resonance with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. The measured branching fraction is (2.44 +/- 0.22 +/- 0.20) x 10(-5) and the charge asymmetry is A = 0.022 +/- 0.085 +/- 0.016. The ratio of the branching fractions B(B-+/- -&gt; psi(2S)pi(+/-))/B(B-+/- -&gt; psi(2S)K-+/-) = (3.99 +/- 0.36 +/- 0.17)% is also determined.

    DOI: 10.1103/PhysRevD.78.051104

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  • Measurement of branching fractions, isospin, and CP-violating asymmetries for exclusive b -&gt; d gamma modes (vol 101, art no 111801, 2008) 査読

    N. Taniguchi, M. Nakao, S. Nishida, I. Adachi, H. Aihara, K. Arinstein, T. Aushev, T. Aziz, A. M. Bakich, V. Balagura, A. Bay, K. Belous, V. Bhardwaj, U. Bitenc, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, M. -C. Chang, P. Chang, Y. Chao, A. Chen, K. -F. Chen, W. T. Chen, B. G. Cheon, C. -C. Chiang, I. -S. Cho, Y. Choi, J. Dalseno, M. Dash, A. Drutskoy, W. Dungel, S. Eidelman, B. Golob, H. Ha, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. Hazumi, Y. Hoshi, W. -S. Hou, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwabuchi, M. Iwasaki, Y. Iwasaki, N. J. Joshi, D. H. Kah, H. Kaji, J. H. Kang, H. Kawai, T. Kawasaki, H. Kichimi, S. K. Kim, Y. I. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kumar, A. Kuzmin, Y. -J. Kwon, S. -H. Kyeong, J. S. Lange, J. S. Lee, S. E. Lee, T. Lesiak, A. Limosani, S. -W. Lin, C. Liu, Y. Liu, D. Liventsev, F. Mandl, S. McOnie, K. Miyabayashi, Y. Miyazaki, G. R. Moloney, Y. Nagasaka, I. Nakamura, E. Nakano, H. Nakazawa, Z. Natkaniec, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, H. K. Park, K. S. Park, L. S. Peak, L. E. Piilonen, H. Sahoo, Y. Sakai, N. Sasao, O. Schneider, J. Schuemann, C. Schwanda, A. J. Schwartz, R. Seidl, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, J. -G. Shiu, B. Shwartz, J. B. Singh, A. Sokolov, S. Stanic, M. Staric, K. Sumisawa, T. Sumiyoshi, S. Y. Suzuki, N. Tamura, G. N. Taylor, Y. Teramoto, I. Tikhomirov, K. Trabelsi, T. Tsuboyama, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, G. Varner, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, R. Wedd, J. Wicht, E. Won, B. D. Yabsley, Y. Yamashita, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, T. Zivko, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW LETTERS   101 ( 12 )   1 - 6   2008年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    DOI: 10.1103/PhysRevLett.101.129904

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  • Measurement of the moments of the photon energy spectrum in B -&gt; X-s gamma decays and determination of |V-cb| and m(b) at Belle 査読

    C. Schwanda, P. Urquijo, E. Barberio, A. Limosani, I. Adachi, H. Aihara, K. Arinstein, T. Aushev, S. Bahinipati, A. M. Bakich, V. Balagura, I. Bedny, K. Belous, U. Bitenc, A. Bondar, A. Bozek, M. Brancko, M. -C. Chang, A. Chen, W. T. Chen, B. G. Cheon, R. Chistov, I. -S. Cho, Y. Choi, J. Dalseno, M. Dash, A. Drutskoy, S. Eidelman, B. Golob, H. Ha, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, Y. Hoshi, W. -S. Hou, H. J. Hyun, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, D. H. Kah, J. H. Kang, P. Kapusta, N. Katayama, H. Kichimi, H. J. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, Y. Kozakai, P. Krizan, P. Krokovny, R. Kumar, C. C. Kuo, Y. Kuroki, A. Kuzmin, Y. -J. Kwon, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, J. Li, C. Liu, D. Liventsev, F. Mandl, A. Matyja, S. McOnie, T. Medvedeva, W. Mitaroff, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, P. Pakhlov, G. Pakhlova, H. Palka, C. W. Park, H. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, J. Schuemann, R. Seidl, A. Sekiya, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, J. -G. Shiu, B. Shwartz, A. Somov, S. Stanic, M. Staric, T. Sumiyoshi, F. Takasaki, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, K. Trabelsi, S. Uehara, Y. Unno, S. Uno, G. Varner, K. E. Varvell, K. Vervink, S. Villa, C. H. Wang, P. Wang, Y. Watanabe, R. Wedd, E. Won, B. D. Yabsley, H. Yamamoto, Y. Yamashita, Z. P. Zhang, A. Zupanc

    PHYSICAL REVIEW D   78 ( 3 )   1 - 13   2008年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    Using the previous Belle measurement of the inclusive photon energy in B -&gt; X-s gamma decays, we determine the first and second moments of this spectrum for minimum photon energies in the B meson rest frame ranging from 1.8 to 2.3 GeV. Combining these measurements with recent Belle data on the lepton energy and hadronic mass moments in B -&gt; X-c center dot nu decays, we perform fits to theoretical expressions derived in the 1S and kinetic mass schemes and extract the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element V-cb, the b-quark mass, and other nonperturbative parameters. In the 1S scheme analysis we find |V-cb|=(41.56 +/- 0.68(fit)+/- 0.08(tau(B)))x10(-3) and m(b)(1S)=(4.723 +/- 0.055) GeV. In the kinetic scheme, we obtain |V-cb|=(41.58 +/- 0.69(fit)+/- 0.08(tau(B))+/- 0.58(th))x10(-3) and m(b)(kin)=(4.543 +/- 0.075) GeV.

    DOI: 10.1103/PhysRevD.78.032016

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  • 21aWA-3 SOI技術を用いた新しいX線イメージセンサーの開発(21aWA X線・中性子(X線),領域10(誘電体,格子欠陥,X線・粒子線,フォノン物性))

    三好, 敏喜, 新井, 康夫, 池上, 陽一, 海野, 義信, 坪山, 透, 寺田, 進, 羽澄, 昌史, 高力, 孝, 田内, 一弥, 池本, 由希子, 池田, 博一, 原, 和彦, 三宅, 秀樹, 河内山, 真美, 瀬賀, 智子, 石野, 宏和, 花垣, 和則, 廣瀬, 穣, 大野, 守史

    日本物理学会講演概要集   63 ( 2 )   872   2008年8月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:社団法人日本物理学会  

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  • 23aSJ-6 SOI pixel検出器におけるセンサー及び回路開発(23aSJ 半導体検出器,素粒子実験領域)

    池本, 由希子, 新井, 康夫, 池上, 陽一, 海野, 義信, 坪山, 透, 寺田, 進, 羽澄, 昌史, 高力, 孝, 田内, 一弥, 三好, 敏喜, 池田, 博一, 原, 和彦, 三宅, 秀樹, 河内山, 真美, 瀬賀, 智子, 石野, 宏和, 花垣, 和則, 廣瀬, 穣, 大野, 守史

    日本物理学会講演概要集   63 ( 2 )   22   2008年8月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:社団法人日本物理学会  

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  • Measurement of masses of the Xi(c)(2645) and Xi(c)(2815) baryons and observation of Xi(c)(2980)-&gt;Xi(c)(2645)pi 査読

    T. Lesiak, I. Adachi, H. Aihara, K. Arinstein, A. M. Bakich, V. Balagura, E. Barberio, I. Bedny, K. Belous, V. Bhardwaj, U. Bitenc, S. Blyth, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, Y. Chao, A. Chen, W. T. Chen, B. G. Cheon, R. Chistov, I. -S. Cho, S. -K. Choi, Y. Choi, J. Dalseno, M. Dash, S. Eidelman, N. Gabyshev, B. Golob, H. Ha, J. Haba, K. Hayasaka, M. Hazumi, D. Heffernan, Y. Hoshi, W. -S. Hou, H. J. Hyun, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, N. J. Joshi, D. H. Kah, H. Kaji, J. H. Kang, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, S. K. Kim, Y. J. Kim, S. Korpar, P. Krizan, P. Krokovny, C. C. Kuo, Y. -J. Kwon, S. Lange, J. S. Lee, M. J. Lee, S. E. Lee, J. Li, S. -W. Lin, C. Liu, D. Liventsev, F. Mandl, S. McOnie, T. Medvedeva, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, Y. Nagasaka, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, H. Ozaki, G. Pakhlova, H. Palka, C. W. Park, H. K. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, J. -G. Shiu, B. Shwartz, A. Sokolov, S. Stanic, M. Staric, T. Sumiyoshi, F. Takasaki, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, K. Trabelsi, T. Tsuboyama, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, P. Urquijo, G. Varner, K. E. Varvell, K. Vervink, C. C. Wang, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, R. Wedd, E. Won, B. D. Yabsley, H. Yamamoto, Y. Yamashita, M. Yamauchi, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc, O. Zyukova

    PHYSICS LETTERS B   665 ( 1 )   9 - 15   2008年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

    We report a precise measurement of the masses of the Xi(c)(2645) and Xi(c)(2815) baryons using a data sample of 414 fb(-1) collected by the Belle Collaboration at the KEKB e(+)e(-) collider. The states Xi(c)(2645)(0,+) are observed in the Xi(+.0)(c)pi(-.+) decay modes, while the Xi(c)(2815)(0.+) are reconstructed in the Xi(c)(2645)(+.0)pi(-.+) decay modes. The following mass splittings are determined: m(Xi c(2645)+) - m(Xi c(2645)0) = (-0.1 +/- 0.3(stat) +/- 0.6(syst)) MeV/c(2) and m(Xi c(2815)+) - m(Xi c(2815)0) (-3.4 +/- 1.9(stat) +/- 0.9(syst)) MeV/c(2) with a much better precision than the current world averages. We also observe a new decay mode, Xi(c)(2980)(0.+) -&gt; Xi(c)(2645)(+.0)pi(-.+). (C) 2008 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.physletb.2008.05.055

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  • Search for B -&gt;pi l(+)l(-) decays at Belle 査読

    J. -T. Wei, K. -F. Chen, I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, A. M. Bakich, V. Balagura, K. Belous, U. Bitenc, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, P. Chang, Y. Chao, A. Chen, W. T. Chen, B. G. Cheon, R. Chistov, I. -S. Cho, Y. Choi, J. Dalseno, S. Eidelman, B. Golob, H. Hayashii, D. Heffernan, Y. Hoshi, W. -S. Hou, H. J. Hyun, T. Iijima, K. Inami, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, D. H. Kah, J. H. Kang, P. Kapusta, T. Kawasaki, H. Kichimi, H. O. Kim, J. H. Kim, S. K. Kim, Y. I. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krokovny, R. Kumar, Y. -J. Kwon, S. -H. Kyeong, J. S. Lee, T. Lesiak, A. Limosani, S. -W. Lin, D. Liventsev, F. Mandl, A. Matyja, S. McOnie, T. Medvedeva, H. Miyata, Y. Miyazaki, G. R. Moloney, M. Nakao, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. K. Park, R. Pestotnik, M. Peters, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, C. Schwanda, K. Senyo, M. Shapkin, J. -G. Shiu, J. B. Singh, A. Somov, S. Stanic, M. Staric, K. Sumisawa, T. Sumiyoshi, F. Takasaki, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, S. Uehara, T. Uglov, Y. Unno, S. Uno, Y. Usov, G. Varner, C. C. Wang, C. H. Wang, M. -Z. Wang, P. Wang, Y. Watanabe, J. Wicht, E. Won, Y. Yamashita, Z. P. Zhang, V. Zhilich, V. Zhulanov, T. Zivko, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW D   78 ( 1 )   1 - 6   2008年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present a search for the decays B+ -&gt; pi(+)l(+)l(-) and B-0 -&gt;pi(0)l(+)l(-), where l(+)l(-) either a mu(+)mu(-) or e(+)e(-) pair, with a data sample of 657x10(6) B (B) over bar pairs collected with the Belle detector at the KEKB e(+)e(-) collider. Signal events are reconstructed from a charged or a neutral pion candidate and a pair of oppositely charged electrons or muons. No significant signal is observed and we set an upper limit on the isospin-averaged branching fraction B(B -&gt; pi l(+)l) &lt; 6.2x10(-8) at the 90% confidence level.

    DOI: 10.1103/PhysRevD.78.011101

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  • Search for B(0)-&gt; J/psi phi decays 査読

    Y. Liu, K. Trabelsi, I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, A. Bay, I. Bedny, K. Belous, V. Bhardwaj, U. Bitenc, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, P. Chang, Y. Chao, A. Chen, K. -F. Chen, B. G. Cheon, I. -S. Cho, Y. Choi, J. Dalseno, M. Dash, S. Eidelman, N. Gabyshev, B. Golob, H. Ha, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, Y. Hoshi, W. -S. Hou, H. J. Hyun, K. Inami, H. Ishino, R. Itoh, M. Iwabuchi, M. Iwasaki, Y. Iwasaki, D. H. Kah, S. U. Kataoka, N. Katayama, T. Kawasaki, H. Kichimi, H. J. Kim, H. O. Kim, S. K. Kim, Y. I. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kumar, Y. -J. Kwon, S. -H. Kyeong, J. S. Lange, J. S. Lee, M. J. Lee, J. Li, A. Limosani, C. Liu, D. Liventsev, A. Matyja, S. McOnie, T. Medvedeva, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, T. Nagamine, Y. Nagasaka, M. Nakao, H. Nakazawa, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, H. K. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, J. Schuemann, C. Schwanda, A. J. Schwartz, A. Sekiya, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, J. -G. Shiu, J. B. Singh, S. Stanic, M. Staric, T. Sumiyoshi, F. Takasaki, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, T. Tsuboyama, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, G. Varner, K. Vervink, C. H. Wang, P. Wang, X. L. Wang, Y. Watanabe, R. Wedd, E. Won, H. Yamamoto, Y. Yamashita, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, T. Zivko, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW D   78 ( 1 )   1 - 5   2008年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a search for the decay B(0) -&gt; J/psi phi, using a sample of 657 x 10(6) B (B) over bar pairs collected with the Belle detector at the Gamma(4S) resonance. No statistically significant signal is found and an upper limit for the branching fraction is determined to be B(B(0) -&gt; J/psi phi) &lt; 9.4 x 10(-7) at 90% confidence level.

    DOI: 10.1103/PhysRevD.78.011106

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  • Search for B+-&gt; D*(+)pi(0) decay 査読

    M. Iwabuchi, M. Nakao, I. Adachi, K. Arinstein, V. Aulchenko, T. Aushev, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, K. Belous, V. Bhardwaj, U. Bitenc, A. Bozek, M. Bracko, T. E. Browder, A. Chen, W. T. Chen, B. G. Cheon, I. -S. Cho, Y. Choi, J. Dalseno, M. Dash, A. Drutskoy, S. Eidelman, M. Fujikawa, N. Gabyshev, H. Ha, J. Haba, K. Hayasaka, M. Hazumi, D. Heffernan, Y. Horii, Y. Hoshi, W. -S. Hou, H. J. Hyun, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, D. H. Kah, H. Kaji, J. H. Kang, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, H. O. Kim, Y. I. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kumar, C. C. Kuo, Y. -J. Kwon, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, A. Limosani, S. -W. Lin, C. Liu, Y. Liu, D. Liventsev, F. Mandl, A. Matyja, S. McOnie, T. Medvedeva, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, G. R. Moloney, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. K. Park, K. S. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, J. Schuemann, C. Schwanda, A. Sekiya, K. Senyo, M. Shapkin, H. Shibuya, J. -G. Shiu, B. Shwartz, S. Stanic, M. Staric, K. Sumisawa, T. Sumiyoshi, S. Suzuki, M. Tanaka, Y. Teramoto, I. Tikhomirov, K. Trabelsi, Y. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. E. Varvell, K. Vervink, C. C. Wang, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, J. Wicht, E. Won, Y. Yamashita, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW LETTERS   101 ( 4 )   1 - 5   2008年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report on a search for the doubly Cabibbo suppressed decay B+ -&gt; D*(+) pi(0), based on a data sample of 657 X 106 B (B) over bar pairs collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We find no significant signal and set an upper limit of B(B+ -&gt; D*(+) pi(0)) &lt; 3. 6 X 10(-6) at the 90% confidence level. This limit can be used to constrain the ratio between suppressed and favored B -&gt; D*pi decay amplitudes, r &lt; 0.051, at the 90% confidence level.

    DOI: 10.1103/PhysRevLett.101.041601

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  • Improved search for D(0)-(D)over-bar(0) mixing using semileptonic decays at Belle 査読

    U. Bitenc, I. Adachi, H. Aihara, K. Arinstein, T. Aushev, A. M. Bakich, V. Balagura, I. Bedny, K. Belous, A. Bondar, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, M. -C. Chang, A. Chen, W. T. Chen, B. G. Cheon, R. Chistov, I. -S. Cho, Y. Choi, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, S. Fratina, B. Golob, H. Ha, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, D. H. Kah, H. Kaji, P. Kapusta, N. Katayama, T. Kawasaki, H. Kichimi, H. J. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, Y. Kozakai, P. Krizan, P. Krokovny, R. Kumar, C. C. Kuo, Y. Kuroki, Y. -J. Kwon, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, J. Li, C. Liu, D. Liventsev, F. Mandl, A. Matyja, S. McOnie, T. Medvedeva, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, M. Nakao, H. Nakazawa, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Palka, C. W. Park, H. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, J. Schuermann, A. J. Schwartz, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, J. -G. Shiu, J. B. Singh, A. Sokolov, A. Somov, S. Stanic, M. Staric, T. Sumiyoshi, F. Takasaki, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, K. Trabelsi, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, P. Urquijo, G. Varner, K. E. Varvell, K. Vervink, S. Villa, A. Vinokurova, C. C. Wang, C. H. Wang, M. -Z. Wang, P. Wang, Y. Watanabe, R. Wedd, E. Won, B. D. Yabsley, H. Yamamoto, Y. Yamashita, C. Z. Yuan, C. C. Zhang, Z. P. Zhang, A. Zupanc

    PHYSICAL REVIEW D   77 ( 11 )   1 - 20   2008年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    A search for mixing in the neutral D meson system has been performed using semileptonic D(0) -&gt; K((*)-) e(+) nu and D(0) -&gt; K((*)-) mu(+) nu decays. Neutral D mesons from D(*+)-&gt; D(0)pi(+)(s) decays are used and the flavor at production is tagged by the charge of the slow pion. The measurement is performed using 492 fb(-1) of data recorded by the Belle detector. From the yield of right-sign and wrong-sign decays arising from nonmixed and mixed events, respectively, we measure the ratio of the time-integrated mixing rate to the unmixed rate to be R(M)=(1.3 +/- 2.2 +/- 2.0) x 10(-4). This corresponds to an upper limit of R(M) &lt; 6.1 x 10(-4) at the 90% C.L.

    DOI: 10.1103/PhysRevD.77.112003

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  • Observation of B-0 -&gt; p(p)over-barK*(0) with a large K*(0) polarization 査読

    J. -H. Chen, M. -Z. Wang, I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, I. Bedny, K. Belous, U. Bitenc, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, M. -C. Chang, Y. Chao, A. Chen, K. -F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, I. -S. Cho, S. -K. Choi, Y. Choi, J. Dalseno, M. Dash, A. Drutskoy, S. Eidelman, B. Golob, H. Ha, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, N. J. Joshi, D. H. Kah, H. Kaji, P. Kapusta, N. Katayama, T. Kawasaki, H. Kichimi, H. J. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, P. Krokovny, R. Kumar, C. C. Kuo, Y. -J. Kwon, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, J. Li, A. Limosani, C. Liu, D. Liventsev, F. Mandl, A. Matyja, S. McOnie, T. Medvedeva, W. Mitaroff, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Palka, C. W. Park, H. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, M. Rozanska, H. Sahoo, Y. Sakai, O. Schneider, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, H. Shibuya, J. -G. Shiu, J. B. Singh, A. Somov, S. Stanic, M. Staric, T. Sumiyoshi, F. Takasaki, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, K. Trabelsi, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. Vervink, S. Villa, A. Vinokurova, C. C. Wang, C. H. Wang, P. Wang, X. L. Wang, Y. Watanabe, R. Wedd, E. Won, H. Yamamoto, Y. Yamashita, C. C. Zhang, Z. P. Zhang, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW LETTERS   100 ( 25 )   1 - 6   2008年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    Using a 492 fb(-1) data sample collected near the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+) e(-) collider, we observe the decay B-0 --&gt; p (p) over barK*(0) with a branching fraction of (1.18(-0.25)(+0.29)(stat) +/- 0.11(syst)) x 10(-6). We study the decay dynamics of B-0 --&gt; p (p) over barK(0) and compare with B+ --&gt; p (p) over barK*(+). The K*(0) meson is found to be almost 100% polarized ( with a fraction of (101 +/- 13 +/- 3)% in the helicity zero state), while the K*(+) meson has a (32 +/- 17 +/- 9)% fraction in the helicity zero state. The direct CP asymmetries for B-0 --&gt; p (p) over barK*(0) and B+ --&gt; p (p) over barK*(+) are measured to be -0.08 +/- 0.20 +/- 0.02 and -0.01 +/- 0.19 +/- 0.02, respectively. In addition, we report improved measurements of the branching fractions B(B+ --&gt; p (p) over barK*(+)) = (3.38(-0.60)(+0.73) +/- 0.39) x 10(-6) and B(B-0 --&gt; p (p) over barK(0)) = (2.51(-0.29)(+0.35) +/- 0.21) x 10(-6), which supersede our previous measurements.

    DOI: 10.1103/PhysRevLett.100.251801

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  • Measurement of B(D-s(+)-&gt;mu(+)nu(mu)) 査読

    L. Widhalm, I. Adachi, H. Aihara, T. Aushev, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, I. Bedny, V. Bhardwaj, U. Bitenc, S. Blyth, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, Y. Chao, A. Chen, W. T. Chen, B. G. Cheon, R. Chistov, I. -S. Cho, Y. Choi, J. Dalseno, M. Dash, A. Drutskoy, S. Eidelman, P. Goldenzweig, B. Golob, H. Ha, J. Haba, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, D. H. Kah, J. H. Kang, P. Kapusta, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, S. K. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kumar, C. C. Kuo, Y. Kuroki, A. Kuzmin, Y. -J. Kwon, J. Lee, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, S. -W. Lin, C. Liu, D. Liventsev, F. Mandl, A. Matyja, S. McOnie, W. Mitaroff, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, S. Ogawa, T. Ohshima, S. Okuno, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Palka, C. W. Park, H. Park, K. S. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, R. Seidl, A. Sekiya, K. Senyo, M. Shapkin, H. Shibuya, J. -G. Shiu, J. B. Singh, A. Somov, S. Stanic, M. Staric, T. Sumiyoshi, S. Y. Suzuki, F. Takasaki, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, K. Trabelsi, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. Vervink, C. H. Wang, M. -Z. Wang, P. Wang, Y. Watanabe, R. Wedd, E. Won, B. D. Yabsley, H. Yamamoto, Y. Yamashita, Z. P. Zhang, V. Zhilich, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW LETTERS   100 ( 24 )   1 - 6   2008年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present a measurement of the branching fraction B(D-s(+)-&gt;mu(+)nu(mu)) using a 548 fb(-1) data sample collected by the Belle experiment at the KEKB e(+)e(-) collider. The D-s momentum is determined by reconstruction of the system recoiling against DK gamma X in events of the type e(+)e(-)-&gt;(DsDKX)-D-*, D-s(*)-&gt; D-s gamma, where X represents additional pions or photons from fragmentation. This full-reconstruction method provides high resolution in the neutrino momentum and thus good background separation, equivalent to that achieved by experiments at the tau-charm factories. We obtain the branching fraction B(D-s(+)-&gt;mu(+)nu(mu))=[6.44 +/- 0.76(stat)+/- 0.57(syst)]x10(-3), implying a D-s decay constant of f(Ds)=[275 +/- 16(stat)+/- 12(syst)] MeV.

    DOI: 10.1103/PhysRevLett.100.241801

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  • Study of B -&gt; D(**)l nu with full reconstruction tagging 査読

    D. Liventsev, I. Adachi, H. Aihara, K. Arinstein, T. Aushev, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, U. Bitenc, A. Bondar, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, P. Chang, Y. Chao, A. Chen, K. -F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, I. -S. Cho, Y. Choi, S. Cole, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, D. Epifanov, N. Gabyshev, B. Golob, H. Ha, J. Haba, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, D. H. Kah, J. H. Kang, P. Kapusta, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kumar, C. C. Kuo, A. Kuzmin, Y. -J. Kwon, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, A. Limosani, S. -W. Lin, Y. Liu, F. Mandl, S. McOnie, T. Medvedeva, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, D. Mohapatra, G. R. Moloney, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, K. S. Park, R. Pestotnik, L. E. Piilonen, Y. Sakai, O. Schneider, C. Schwanda, K. Senyo, M. Shapkin, H. Shibuya, J. -G. Shiu, B. Shwartz, A. Sokolov, A. Somov, S. Stanic, M. Staric, T. Sumiyoshi, S. Suzuki, F. Takasaki, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. Vervink, S. Villa, A. Vinokurova, C. C. Wang, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, E. Won, Y. Yamashita, Z. P. Zhang, V. Zhilich, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW D   77 ( 9 )   1 - 7   2008年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a study of semileptonic B decays to P-wave D(**) mesons. Semileptonic decay to a D(2)(*) meson is observed for the first time and its product branching ratio is measured to be B(B(+)-&gt; (D) over bar (*0)(2)l(+)nu) x B((D) over bar (*0)(2)-&gt; D(-)pi(+)) = 0.22 +/- 0.03(stat.) +/- 0.04(syst.)%. The result is obtained using fully reconstructed B tags from a data sample that contains 657 x 10(6)B (B) over bar pairs collected at the Gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider.

    DOI: 10.1103/PhysRevD.77.091503

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  • Search for resonant B-+/--&gt; K(+/-)h -&gt; K-+/-gamma gamma decays at Belle 査読

    J. Wicht, I. Adachi, H. Aihara, D. Anipko, V. Aulchenko, T. Aushev, A. M. Bakich, E. Barberio, I. Bedny, U. Bitenc, I. Bizjak, A. Bondar, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, P. Chang, Y. Chao, A. Chen, W. T. Chen, B. G. Cheon, I. -S. Cho, Y. Choi, Y. K. Choi, J. Dalseno, M. Dash, S. Eidelman, D. Epifanov, S. Fratina, A. Go, A. Gorisek, H. Ha, T. Hara, K. Hayasaka, M. Hazumi, D. Heffernan, L. Hinz, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, K. Ikado, K. Inami, A. Ishikawa, H. Ishino, M. Iwasaki, Y. Iwasaki, C. Jacoby, D. H. Kah, H. Kaji, J. H. Kang, P. Kapusta, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kumar, C. C. Kuo, A. Kuzmin, Y. -J. Kwon, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, J. Li, A. Limosani, S. -W. Lin, D. Liventsev, G. Majumder, F. Mandl, T. Matsumoto, A. Matyja, S. McOnie, T. Medvedeva, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, D. Mohapatra, G. R. Moloney, E. Nakano, M. Nakao, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, Y. Onuki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, K. S. Park, R. Pestotnik, L. E. Piilonen, F. J. Ronga, Y. Sakai, T. Schietinger, O. Schneider, J. Schuemann, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, H. Shibuya, J. B. Singh, A. Somov, S. Stanic, M. Staric, H. Stoeck, T. Sumiyoshi, F. Takasaki, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, I. Tikhomirov, T. Tsukamoto, S. Uehara, Y. Unno, S. Uno, P. Urquijo, Y. Ushiroda, Y. Usov, G. Varner, K. E. Varvell, K. Vervink, S. Villa, A. Vinokurova, C. H. Wang, P. Wang, Y. Watanabe, R. Wedd, E. Won, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, Z. P. Zhang, V. Zhilich, A. Zupanc, N. Zwahlen

    PHYSICS LETTERS B   662 ( 4 )   323 - 329   2008年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

    DOI: 10.1016/j.physletb.2008.03.029

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  • Measurement of the branching fraction and charge asymmetry of the decay B+-&gt; D+(D)over-bar(0) and search for B-0 -&gt; D-0(D)over-bar(0) 査読

    I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, A. M. Bakich, V. Balagura, K. Belous, V. Bhardwaj, U. Bitenc, S. Blyth, A. Bondar, A. Bozek, M. Bracko, J. Brodzicka, Y. Chao, A. Chen, K. -F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, I. -S. Cho, S. -K. Choi, Y. Choi, J. Dalseno, M. Dash, S. Eidelman, D. Epifanov, S. Fratina, H. Ha, J. Haba, T. Hara, M. Hazumi, D. Heffernan, Y. Hoshi, W. -S. Hou, H. J. Hyun, K. Inami, A. Ishikawa, H. Ishino, M. Iwasaki, Y. Iwasaki, D. H. Kah, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, S. K. Kim, K. Kinoshita, S. Korpar, P. Krokovny, C. C. Kuo, Y. Kuroki, A. Kuzmin, Y. -J. Kwon, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, S. -W. Lin, C. Liu, D. Liventsev, F. Mandl, S. McOnie, T. Medvedeva, W. Mitaroff, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, D. Mohapatra, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, H. K. Park, L. S. Peak, L. E. Piilonen, A. Poluektov, H. Sahoo, Y. Sakai, O. Schneider, J. Schumann, C. Schwanda, K. Senyo, M. Shapkin, H. Shibuya, J. -G. Shiu, A. Somov, M. Staric, T. Sumiyoshi, M. Tanaka, Y. Teramoto, K. Trabelsi, T. Tsuboyama, S. Uehara, K. Ueno, Y. Unno, S. Uno, Y. Usov, G. Varner, K. E. Varvell, K. Vervink, P. Wang, Y. Watanabe, E. Won, Y. Yamashita, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW D   77 ( 9 )   1 - 5   2008年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report an improved measurement of the B+-&gt; D+(D) over bar (0) and B-0 -&gt; D-0(D) over bar (0) decays based on 657 x 10(6) B (B) over bar events collected with the Belle detector at KEKB. We measure the branching fraction and charge asymmetry for the B+-&gt; D+(D) over bar (0) decay: B(B+-&gt; D+(D) over bar (0)) = (3.85 +/- 0.31 +/- 0.38) x 10(-4) and A(CP)(B+-&gt; D+(D) over bar (0))= 0.00 +/- 0.08 +/- 0.02, where the first error is statistical and the second is systematic. We also set the upper limit for the B-0 -&gt; D-0(D) over bar (0) decay: B(B-0 -&gt; D-0(D) over bar (0)) &lt; 0.43 x 10(-4) at 90% CL.

    DOI: 10.1103/PhysRevD.77.091101

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  • Measurements of time-dependent CP violation in B(0) -&gt; (2S)K(S)(0) decays 査読

    H. Sahoo, T. E. Browder, K. Trabelsi, I. Adachi, H. Aihara, K. Arinstein, T. Aushev, S. Bahinipati, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, I. Bedny, K. Belous, U. Bitenc, A. Bondar, A. Bozek, M. Bracko, M. -C. Chang, Y. Chao, A. Chen, W. T. Chen, B. G. Cheon, R. Chistov, I. -S. Cho, Y. Choi, J. Dalseno, M. Dash, A. Drutskoy, S. Eidelman, B. Golob, H. Ha, J. Haba, K. Hara, T. Hara, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, N. J. Joshi, D. H. Kah, J. H. Kang, P. Kapusta, N. Katayama, H. Kichimi, H. J. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, Y. Kozakai, P. Krizan, P. Krokovny, R. Kumar, C. C. Kuo, Y. Kuroki, Y. -J. Kwon, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, J. Li, A. Limosani, D. Liventsev, F. Mandl, A. Matyja, S. McOnie, T. Medvedeva, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, P. Pakhlov, G. Pakhlova, H. Palka, C. W. Park, H. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, Y. Sakai, O. Schneider, C. Schwanda, A. J. Schwartz, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, H. Shibuya, J. -G. Shiu, B. Shwartz, A. Somov, S. Stanic, M. Staric, K. Sumisawa, T. Sumiyoshi, F. Takasaki, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, S. Uehara, K. Ueno, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. E. Varvell, K. Vervink, S. Villa, C. H. Wang, P. Wang, X. L. Wang, Y. Watanabe, R. Wedd, E. Won, H. Yamamoto, Y. Yamashita, C. C. Zhang, Z. P. Zhang, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   77 ( 9 )   1 - 6   2008年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report improved measurements of time-dependent CP violation parameters for B(0)((B) over bar (0))-&gt; psi(2S)K(S)(0). This analysis is based on a data sample of 657 x 10(6) B (B) over bar pairs collected at the Gamma(4S) resonance with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. We fully reconstruct one neutral B meson in the psi(2S)K(S)(0) CP-eigenstate decay channel, and the flavor of the accompanying B meson is identified to be either B(0) or (B) over bar (0) from its decay products. CP violation parameters are obtained from the asymmetries in the distributions of the proper-time intervals between the two B decays S(psi(2S)KS)(0) = + 0.72 +/- 0.09 (stat) +/- 0.03 (syst), A(psi(2S)KS)(0) = + 0.04 +/- 0.07 (stat) +/- 0.05 (syst). These results are in agreement with results from measurements of B(0)-&gt; J/psi K(0).

    DOI: 10.1103/PhysRevD.77.091103

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  • Production of new charmoniumlike states in e(+)e(-)-&gt; J/psi D(()*())(D)over-bar(()*()) at root s approximate to 10.6 GeV 査読

    P. Pakhlov, I. Adachi, H. Aihara, K. Arinstein, T. Aushev, T. Aziz, A. M. Bakich, V. Balagura, E. Barberio, I. Bedny, K. Belous, V. Bhardwaj, U. Bitenc, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, Y. Chao, A. Chen, K. -F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, Y. Choi, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, B. Golob, H. Ha, K. Hayasaka, M. Hazumi, D. Heffernan, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Ikado, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, D. H. Kah, J. H. Kang, P. Kapusta, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kumar, C. C. Kuo, Y. -J. Kwon, J. S. Lange, M. J. Lee, S. E. Lee, T. Lesiak, A. Limosani, S. -W. Lin, Y. Liu, D. Liventsev, F. Mandl, A. Matyja, T. Medvedeva, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, T. Mori, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, H. Ozaki, G. Pakhlova, H. Palka, C. W. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, R. Seidl, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, H. Shibuya, J. -G. Shiu, J. B. Singh, A. Somov, S. Stanic, M. Staric, T. Sumiyoshi, S. Suzuki, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. Vervink, C. H. Wang, P. Wang, X. L. Wang, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamashita, M. Yamauchi, C. Z. Yuan, C. C. Zhang, Z. P. Zhang, V. Zhilich, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW LETTERS   100 ( 20 )   1 - 5   2008年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a study of the processes e(+)e(-)-&gt; J/psi D(()*())(D) over bar (()*()). In J/psi D*(D) over bar (()*()) we observe a significant enhancement in the D*(D) over bar (()*()) invariant mass spectrum, which we interpret as a new charmoniumlike state and denote X(4160). The X(4160) parameters are M=(4156(-20)(+25)+/- 15) MeV/c(2) and Gamma=(139(-61)(+111)+/- 21) MeV. We also report a new measurement of the X(3940) mass and width: M=(3942(-6)(+7)+/- 6) MeV/c(2) and Gamma=(37(-15)(+26)+/- 8) MeV. The analysis is based on a 693 fb(-1) data sample recorded near the Upsilon(4S) resonance by the Belle detector at the KEKB asymmetric-energy collider.

    DOI: 10.1103/PhysRevLett.100.202001

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  • Measurement of the ratio B(D-0 -&gt;pi(+)pi(-)pi(0))/B(D-0 -&gt; K-pi(+)pi(0)) and the time-integrated CP asymmetry in D-0 -&gt;pi(+)pi(-)pi(0) 査読

    K. Arinstein, I. Adachi, H. Aihara, V. Aulchenko, T. Aushev, T. Aziz, S. Bahinipati, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, I. Bedny, K. Belous, V. Bhardwaj, U. Bitenc, S. Blyth, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, Y. Chao, A. Chen, W. T. Chen, B. G. Cheon, R. Chistov, I. -S. Cho, Y. Choi, S. Cole, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, D. Epifanov, N. Gabyshev, P. Goldenzweig, B. Golob, H. Ha, J. Haba, K. Hara, K. Hayasaka, H. Hayashii, M. Hazumi, Y. Hoshi, W. -S. Hou, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, N. J. Joshi, D. H. Kah, H. Kaji, J. H. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, S. K. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, Y. Kozakai, P. Krizan, P. Krokovny, R. Kumar, C. C. Kuo, Y. Kuroki, A. Kuzmin, Y. -J. Kwon, J. S. Lange, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, A. Limosani, S. -W. Lin, C. Liu, Y. Liu, D. Liventsev, F. Mandl, S. McOnie, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, T. Mori, E. Nakano, M. Nakao, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, K. S. Park, R. Pestotnik, L. E. Piilonen, A. Poluektov, H. Sahoo, Y. Sakai, O. Schneider, J. Schfimann, C. Schwanda, A. J. Schwartz, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, H. Shibuya, J. -G. Shiu, B. Shwartz, J. B. Singh, A. Sokolov, A. Somov, S. Stanic, M. Staric, T. Sumiyoshi, S. Y. Suzuki, F. Takasaki, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, Y. Usov, G. Varner, K. Vervink, S. Villa, A. Vinokurova, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, E. Won, B. D. Yabsley, H. Yamamoto, Y. Yamashita, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc, O. Zyukova

    PHYSICS LETTERS B   662 ( 2 )   102 - 110   2008年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

    We report a high-statistics measurement of the relative branching fraction B(D-0 --&gt; pi(+)pi(-)pi(0))/B(D-0 --&gt; K-pi(+)pi(0)) using a 532 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The measured value of the relative branching fraction is B(D-0 --&gt; pi(+)pi-(7)pi(0))/B(D-0 --&gt; K-pi(+)pi(0)) = (10.12 +/- 0.04(stat) +/- 0.18(syst)) x 10(-2), which has an accuracy comparable to the world average. We also present a measurement of the time-integrated CP asymmetry in D-0 pi(+)pi(-)pi(0) decay. The result, A(CP) = (0.43 +/- 1.30)%, shows no significant CP violation. (C) 2008 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.physletb.2008.02.054

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  • Observation of a resonancelike structure in the pi(+-)psi &apos; mass distribution in exclusive B -&gt; K pi(+-)psi &apos; decays 査読

    S. -K. Choi, S. L. Olsen, I. Adachi, H. Aihara, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, V. Balagura, I. Bedny, U. Bitenc, A. Bondar, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, P. Chang, Y. Chao, A. Chen, K. -F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, Y. Choi, J. Dalseno, M. Danilov, M. Dash, S. Eidelman, N. Gabyshev, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, Y. Hoshi, W. -S. Hou, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, D. H. Kah, J. H. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. O. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, P. Krizan, P. Krokovny, R. Kumar, C. C. Kuo, A. Kuzmin, Y. -J. Kwon, J. S. Lange, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, A. Limosani, S. -W. Lin, Y. Liu, D. Liventsev, F. Mandl, A. Matyja, S. McOnie, T. Medvedeva, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, E. Nakano, M. Nakao, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, A. J. Schwartz, K. Senyo, M. Shapkin, C. P. Shen, H. Shibuya, B. Shwartz, J. B. Singh, A. Somov, S. Stanic, M. Staric, T. Sumiyoshi, S. Y. Suzuki, F. Takasaki, K. Tamai, M. Tanaka, Y. Teramoto, I. Tikhomirov, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, G. Varner, K. Vervink, S. Villa, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, R. Wedd, E. Won, B. D. Yabsley, Y. Yamashita, C. Z. Yuan, Z. P. Zhang, V. Zhulanov, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW LETTERS   100 ( 14 )   1 - 6   2008年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    A distinct peak is observed in the pi(+/-)psi&apos; invariant mass distribution near 4.43 GeV in B -&gt; K pi(+/-)psi&apos; decays. A fit using a Breit-Wigner resonance shape yields a peak mass and width of M=4433 +/- 4(stat)+/- 2(syst) MeV and Gamma=45(-13)(+18)(stat)(-13)(+30)(syst) MeV. The product branching fraction is determined to be B(B(0)-&gt; K(-/+)Z(+/-)(4430))xB(Z(+/-)(4430)-&gt;pi(+/-)psi&apos;)=(4.1 +/- 1.0(stat)+/- 1.4(syst))x10(-5), where Z(+/-)(4430) is used to denote the observed structure. The statistical significance of the observed peak is 6.5 sigma. These results are obtained from a 605 fb(-1) data sample that contains 657x10(6) B (B) over bar pairs collected near the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric energy e(+)e(-) collider.

    DOI: 10.1103/PhysRevLett.100.142001

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  • Measurement of CP asymmetries and branching fractions in a time-dependent Dalitz analysis of B-0 -&gt;(rho pi)(0) and a constraint on the quark mixing angle phi(2) 査読

    A. Kusaka, C. C. Wang, I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, A. M. Bakich, V. Balagura, E. Barberio, I. Bedny, K. Belous, U. Bitenc, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, P. Chang, Y. Chao, A. Chen, W. T. Chen, B. G. Cheon, R. Chistov, I. -S. Cho, S. -K. Choi, Y. Choi, J. Dalseno, M. Dash, S. Eidelman, N. Gabyshev, B. Golob, J. Haba, K. Hara, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, Y. Hoshi, W. -S. Hou, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, D. H. Kah, J. H. Kang, H. Kawai, T. Kawasaki, H. Kichimi, H. O. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kumar, C. C. Kuo, A. Kuzmin, Y. -J. Kwon, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, A. Limosani, S. -W. Lin, Y. Liu, D. Liventsev, F. Mandl, A. Matyja, S. McOnie, T. Medvedeva, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, E. Nakano, M. Nakao, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, H. Ozaki, G. Pakhlova, C. W. Park, H. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, C. Schwanda, A. J. Schwartz, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, H. Shibuya, B. Shwartz, J. B. Singh, A. Somov, S. Stanic, M. Staric, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, Y. Teramoto, I. Tikhomirov, K. Trabelsi, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, P. Urquijo, G. Varner, K. E. Varvell, K. Vervink, S. Villa, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, E. Won, Y. Yamashita, Z. P. Zhang, V. Zhulanov, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW D   77 ( 7 )   1 - 25   2008年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present the results of a time-dependent Dalitz plot analysis of B-0 -&gt;pi(+)pi(-)pi(0) decays based on a 414 fb(-1) data sample that contains 449x10(6)B (B) over bar pairs. The data were collected on the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric energy e(+)e(-) collider. Combining our analysis with information on charged B decay modes, we perform a full Dalitz and isospin analysis and obtain a constraint on the quark mixing angle phi(2), 68 degrees &lt;phi(2)&lt; 95 degrees at the 68.3% confidence level for the phi(2) solution consistent with the standard model. A large standard-model-disfavored region also remains. The branching fractions for the decay processes B-0 -&gt;rho(+/-)(770)pi(-/+) and B-0 -&gt;rho(0)(770)pi(0) are measured to be (22.6 +/- 1.1[stat]+/- 4.4[syst])x10(-6) and (3.0 +/- 0.5[stat]+/- 0.7[syst])x10(-6), respectively. These are the first branching fraction measurements of the process B-0 -&gt;rho(770)pi with the lowest resonance rho(770) explicitly separated from the radial excitations.

    DOI: 10.1103/PhysRevD.77.072001

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  • Improved measurement of time-dependent CP violation in B-0 -&gt; J/psi pi(0) decays 査読

    S. E. Lee, K. Miyabayashi, H. Aihara, T. Aushev, T. Aziz, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, K. Belous, V. Bhardwaj, U. Bitenc, S. Blyth, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, P. Chang, A. Chen, K. -F. Chen, B. G. Cheon, R. Chistov, I. -S. Cho, S. -K. Choi, Y. Choi, J. Dalseno, M. Dash, S. Eidelman, D. Epifanov, N. Gabyshev, H. Ha, J. Haba, K. Hara, T. Hara, H. Hayashii, M. Hazumi, D. Heffernan, T. Higuchi, Y. Hoshi, W. -S. Hou, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, D. H. Kah, J. H. Kang, S. U. Kataoka, H. Kawai, T. Kawasaki, H. J. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, R. Kumar, C. C. Kuo, A. Kuzmin, Y. -J. Kwon, J. S. Lee, M. J. Lee, T. Lesiak, S. -W. Lin, Y. Liu, D. Liventsev, S. McOnie, T. Medvedeva, W. Mitaroff, H. Miyata, R. Mizuk, T. Mori, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Park, K. S. Park, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, A. J. Schwartz, A. Sekiya, K. Senyo, M. Shapkin, C. P. Shen, H. Shibuya, S. Shinomiya, J. -G. Shiu, B. Shwartz, J. B. Singh, A. Sokolov, A. Somov, S. Stanic, M. Staric, K. Sumisawa, T. Sumiyoshi, S. Suzuki, O. Tajima, F. Takasaki, K. Tamai, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, K. Trabelsi, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Ushiroda, Y. Usov, G. Varner, K. E. Varvell, S. Villa, C. C. Wang, C. H. Wang, P. Wang, X. L. Wang, Y. Watanabe, E. Won, A. Yamaguchi, Y. Yamashita, M. Yamauchi, C. Z. Yuan, Y. Yusa, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   77 ( 7 )   1 - 6   2008年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report improved measurements of time-dependent CP violation parameters for B-0((B) over bar (0))-&gt; J/psi pi(0) decay. This analysis is based on 535x10(6) B (B) over bar pairs accumulated at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. From the distribution of proper time intervals between the two B decays, we obtain the following CP violation parameters S-J/psi pi(0)=-0.65 +/- 0.21(stat)+/- 0.05(syst) and A(J/psi pi)(0)=+0.08 +/- 0.16(stat)+/- 0.05(syst),which are consistent with standard model expectations.

    DOI: 10.1103/PhysRevD.77.071101

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  • Observation of anomalous Y(1S)pi(+)pi(-) and Y(2S)pi(+)pi(-) production near the Y(5S) resonance 査読

    K. -F. Chen, W. -S. Hou, M. Shapkin, A. Sokolov, I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, A. M. Bakich, V. Balagura, A. Bay, K. Belous, V. Bhardwaj, U. Bitenc, A. Bondar, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, P. Chang, Y. Chao, A. Chen, W. T. Chen, R. Chistov, Y. Choi, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, N. Gabyshev, B. Golob, H. Ha, J. Haba, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, Y. Hoshi, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, D. H. Kah, J. H. Kang, P. Kapusta, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. O. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kumar, C. C. Kuo, Y. -J. Kwon, J. S. Lange, J. S. Lee, M. J. Lee, T. Lesiak, A. Limosani, S. -W. Lin, Y. Liu, D. Liventsev, F. Mandl, S. McOnie, T. Medvedeva, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Palka, C. W. Park, H. Park, K. S. Park, R. Pestotnik, L. E. Piilonen, Y. Sakai, O. Schneider, J. Schuemann, C. Schwanda, A. J. Schwartz, K. Senyo, M. E. Sevior, C. P. Shen, H. Shibuya, J. -G. Shiu, B. Shwartz, A. Somov, S. Stanic, M. Staric, T. Sumiyoshi, F. Takasaki, K. Tamai, M. Tanaka, G. N. Taylor, Y. Teramoto, K. Trabelsi, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Ushiroda, Y. Usov, G. Varner, K. Vervink, S. Villa, C. C. Wang, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, R. Wedd, J. Wicht, E. Won, B. D. Yabsley, Y. Yamashita, M. Yamauchi, C. Z. Yuan, Y. Yusa, C. C. Zhang, Z. P. Zhang, A. Zupanc

    PHYSICAL REVIEW LETTERS   100 ( 11 )   1 - 6   2008年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the first observation of e(+)e(-) -&gt; Y(1S)pi(+)pi(-), Upsilon(2S)pi(+)pi(-), and first evidence for e(+)e(-) -&gt; Y(3S)pi(+)pi(-), Y(1S)K(+)K(-), near the peak of the Y(5S) resonance at root s similar to 10.87 GeV. The results are based on a data sample of 21.7 fb(-1) collected with the Belle detector at the KEKB e(+)e(-) collider. Attributing the signals to the Upsilon(5S) resonance, the partial widths Gamma(Y(5S) -&gt; Y(1S)pi(+)pi(-)) = 0.59 +/- 0.04(stat)+/- 0.09(syst) MeV and Gamma(Y(5S) -&gt; Y(2S)pi(+)pi(-)) = 0.85 +/- 0.07(stat)+/- 0.16(syst) MeV are obtained from the observed cross sections. These values exceed by more than 2 orders of magnitude the previously measured partial widths for dipion transitions between lower Y resonances.

    DOI: 10.1103/PhysRevLett.100.112001

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  • Observation of a new D-sJ meson in B+-&gt;(D)over-bar(0)D(0)K(+) decays 査読

    J. Brodzicka, H. Palka, I. Adachi, H. Aihara, V. Aulchenko, A. M. Bakich, E. Barberio, A. Bay, I. Bedny, U. Bitenc, A. Bondar, M. Bracko, T. E. Browder, M. -C. Chang, P. Chang, A. Chen, W. T. Chen, B. G. Cheon, C. -C. Chiang, R. Chistov, I. -S. Cho, S. -K. Choi, Y. Choi, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, N. Gabyshev, A. Go, G. Gokhroo, B. Golob, H. Ha, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, Y. Hoshi, W. -S. Hou, H. J. Hyun, T. Iijima, K. Ikado, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, N. J. Joshi, D. H. Kah, J. H. Kang, H. Kawai, T. Kawasaki, H. Kichimi, H. O. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krokovny, R. Kumar, C. C. Kuo, Y. -J. Kwon, J. S. Lange, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, A. Limosani, D. Liventsev, F. Mandl, S. McOnie, T. Medvedeva, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, R. Mizuk, T. Mori, Y. Nagasaka, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, R. Pestotnik, L. E. Pilionen, M. Rozanska, Y. Sakai, O. Schneider, R. Seidl, A. Sekiya, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, H. Shibuya, J. -G. Shiu, J. B. Singh, A. Sokolov, A. Somov, S. Stanic, M. Staric, T. Sumiyoshi, F. Takasaki, K. Tamai, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, P. Urquijo, G. Varner, K. Vervink, S. Villa, A. Vinokurova, C. C. Wang, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, R. Wedd, E. Won, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, C. Z. Yuan, Y. Yusa, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc, N. Zwahlen

    PHYSICAL REVIEW LETTERS   100 ( 9 )   1 - 6   2008年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the observation of a new D-sJ meson produced in B+-&gt;(D) over bar D-0(sJ)-&gt;(D) over bar (DK+)-D-0-K-0. This state has a mass of M=2708 +/- 9(-10)(+11) MeV/c(2), a width Gamma=108 +/- 23(-31)(+36) MeV/c(2) and a 1(-) spin-parity. The statistical significance of this observation is 8.4 sigma. The results are based on an analysis of 449x10(6) B (B) over bar events collected at the Gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider.

    DOI: 10.1103/PhysRevLett.100.092001

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  • Difference in direct charge-parity violation between charged and neutral B meson decays 査読

    S. -W. Lin, Y. Unno, W. -S. Hou, P. Chang, I. Adachi, H. Aihara, K. Akai, K. Arinstein, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, I. Bedny, U. Bitenc, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, M. -C. Chang, Y. Chao, A. Chen, K. -F. Chen, W. T. Chen, B. G. Cheon, C. -C. Chiang, R. Chistov, I. -S. Cho, S. -K. Choi, Y. Choi, Y. K. Choi, S. Cole, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, D. Epifanov, S. Fratina, M. Fujikawa, K. Furukawa, N. Gabyshev, P. Goldenzweig, B. Golob, H. Ha, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Ikado, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwabuchi, M. Iwasaki, Y. Iwasaki, D. H. Kah, H. Kaji, S. U. Kataoka, H. Kawai, T. Kawasaki, A. Kibayashi, H. Kichimi, E. Kikutani, H. J. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, Y. Kozakai, P. Krizan, P. Krokovny, R. Kumar, C. C. Kuo, A. Kuzmin, Y. -J. Kwon, M. J. Lee, S. E. Lee, T. Lesiak, J. Li, Y. Liu, D. Liventsev, F. Mandl, D. Marlow, S. McOnie, T. Medvedeva, T. Mimashi, W. Mitaroff, K. Miyabayashi, H. Miyake, Y. Miyazaki, R. Mizuk, T. Mori, T. T. Nakamura, E. Nakano, M. Nakao, H. Nakazawa, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, Y. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, H. Ozaki, G. Pakhlova, C. W. Park, H. Park, L. S. Peak, R. Pestotnik, M. Peters, L. E. Piilonen, A. Poluektov, H. Sahoo, Y. Sakai, O. Schneider, J. Schuemann, A. J. Schwartz, R. Seidl, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, H. Shibuya, T. Shidara, S. Shinomiya, J. -G. Shiu, B. Shwartz, J. B. Singh, A. Sokolov, A. Somov, S. Stanic, M. Staric, K. Sumisawa, T. Sumiyoshi, S. Suzuki, O. Tajima, F. Takasaki, N. Tamura, M. Tanaka, M. Tawada, G. N. Taylor, Y. Teramoto, I. Tikhomirov, K. Trabelsi, S. Uehara, K. Ueno, T. Uglov, S. Uno, P. Urquijo, Y. Ushiroda, Y. Usov, G. Varner, K. E. Varvell, K. Vervink, S. Villa, C. C. Wang, C. H. Wang, M. -Z. Wang, Y. Watanabe, R. Wedd, J. Wicht, E. Won, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, M. Yoshida, C. Z. Yuan, Y. Yusa, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    NATURE   452 ( 7185 )   332 - U3   2008年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:NATURE PUBLISHING GROUP  

    Equal amounts of matter and antimatter are predicted to have been produced in the Big Bang, but our observable Universe is clearly matter- dominated. One of the prerequisites(1) for understanding this elimination of antimatter is the nonconservation of charge- parity ( CP) symmetry. So far, two types of CP violation have been observed in the neutral K meson ( K-0) and B meson ( B-0) systems: CP violation involving the mixing(2) between K-0 and its antiparticle (K) over bar (0) ( and likewise(3,4) for B-0 and (B) over bar (0)), and direct CP violation in the decay of each meson(5-8). The observed effects for both types of CP violation are substantially larger for the B-0 meson system. However, they are still consistent with the standard model of particle physics, which has a unique source(9) of CP violation that is known to be too small(10) to account for the matter-dominated Universe. Here we report that the direct CP violation in charged B-+/- --&gt; K-+/- pi(0) decay is different from that in the neutral B-0 counterpart. The direct CP- violating decay rate asymmetry, A(K)+/- (pi 0) ( that is, the difference between the number of observed B- --&gt; K- pi(0) event versus B+ --&gt; K+ pi(0) events, normalized to the sum of these events) is measured to be about +7%, with an uncertainty that is reduced by a factor of 1.7 from a previous measurement(7). However, the asymmetry A(K+/-) p(-/+) for B-0 --&gt; K- pi(+) versus B-0 --&gt; K+ pi(-) is at the -10% level(7,8). Although it is susceptible to strong interaction effects that need further clarification, this large deviation in direct CP violation between charged and neutral B meson decays could be an indication of new sources of CP violation - which would help to explain the dominance of matter in the Universe.

    DOI: 10.1038/nature06827

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  • Observation of B(S)(0)-&gt;phi gamma and search for B(S)(0)-&gt;gamma gamma decays at Belle 査読

    J. Wicht, I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, A. M. Bakich, V. Balagura, A. Bay, K. Belous, V. Bhardwaj, U. Bitenc, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, P. Chang, Y. Chao, A. Chen, K. -F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, I. -S. Cho, Y. Choi, J. Dalseno, M. Dash, A. Drutskoy, S. Eidelman, N. Gabyshev, P. Goldenzweig, B. Golob, J. Haba, K. Hayasaka, M. Hazumi, D. Heffernan, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, Y. Iwasaki, D. H. Kah, H. Kaji, J. H. Kang, P. Kapusta, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, H. O. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, R. Kumar, C. C. Kuo, Y. -J. Kwon, J. S. Lange, J. Lee, J. S. Lee, S. E. Lee, T. Lesiak, A. Limosani, S. -W. Lin, Y. Liu, D. Liventsev, F. Mandl, S. McOnie, T. Medvedeva, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, D. Mohapatra, G. R. Moloney, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Palka, C. W. Park, H. Park, K. S. Park, R. Pestotnik, L. E. Piilonen, Y. Sakai, O. Schneider, J. Schuemann, A. J. Schwartz, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, J. -G. Shiu, B. Shwartz, J. B. Singh, A. Somov, S. Stanic, M. Staric, K. Sumisawa, T. Sumiyoshi, F. Takasaki, K. Tamai, M. Tanaka, G. N. Taylor, Y. Teramoto, K. Trabelsi, T. Tsuboyama, S. Uehara, K. Ueno, Y. Unno, S. Uno, Y. Ushiroda, Y. Usov, G. Varner, K. Vervink, S. Villa, C. H. Wang, P. Wang, X. L. Wang, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamashita, M. Yamauchi, Y. Yusa, Z. P. Zhang, V. Zhilich, A. Zupanc, N. Zwahlen

    PHYSICAL REVIEW LETTERS   100 ( 12 )   1 - 6   2008年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We search for the radiative penguin decays B(s)(0)-&gt;phi gamma and B(s)(0)-&gt;gamma gamma in a 23.6 fb(-1) data sample collected at the Upsilon(5S) resonance with the Belle detector at the KEKB e(+)e(-) asymmetric-energy collider. We observe for the first time a radiative penguin decay of the B(s)(0) meson in the B(s)(0)-&gt;phi gamma mode and we measure B(B(s)(0)-&gt;phi gamma)=(57(-15)(+18)(stat)(-11)(+12)(syst))x10(-6). No significant B(s)(0)-&gt;gamma gamma signal is observed and we set a 90% confidence level upper limit of B(B(s)(0)-&gt;gamma gamma)&lt; 8.7x10(-6).

    DOI: 10.1103/PhysRevLett.100.121801

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  • Measurement of time-dependent CP-violating parameters in B(0)-&gt; K(S)(0)K(S)(0) decays 査読

    Y. Nakahama, K. Sumisawa, I. Adachi, H. Aihara, T. Aushev, A. M. Bakich, V. Balagura, E. Barberio, I. Bedny, K. Belous, U. Bitenc, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, P. Chang, Y. Chao, A. Chen, K. -F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, I. -S. Cho, Y. Choi, J. Dalseno, M. Dash, A. Drutskoy, S. Eidelman, N. Gabyshev, B. Golob, H. Ha, J. Haba, K. Hara, T. Hara, K. Hayasaka, M. Hazumi, D. Heffernan, Y. Hoshi, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, D. H. Kah, H. Kaji, J. H. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, H. O. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kumar, C. C. Kuo, A. Kuzmin, Y. -J. Kwon, J. Lee, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, A. Limosani, S. -W. Lin, D. Liventsev, F. Mandl, S. McOnie, T. Medvedeva, W. Mitaroff, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, K. S. Park, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, C. Schwanda, A. J. Schwartz, R. Seidl, M. E. Sevior, M. Shapkin, C. P. Shen, H. Shibuya, J. -G. Shiu, B. Shwartz, J. B. Singh, A. Somov, S. Stanic, M. Staric, T. Sumiyoshi, O. Tajima, F. Takasaki, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, K. Trabelsi, T. Tsuboyama, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, Y. Ushiroda, G. Varner, K. Vervink, C. H. Wang, P. Wang, X. L. Wang, Y. Watanabe, E. Won, Y. Yamashita, Y. Yusa, Z. P. Zhang, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW LETTERS   100 ( 12 )   1 - 5   2008年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a measurement of the CP-violating parameters in B(0)-&gt; K(S)(0)K(S)(0) decays based on a data sample of 657x10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. In this Letter, one neutral B meson is fully reconstructed in the B(0)-&gt; K(S)(0)K(S)(0) decay mode, and the flavor of the accompanying B meson is identified by its decay products. The CP-violating parameters are measured from the asymmetry in the distributions of the proper-time interval between the two B decays: S(KS)(0)K(S)(0)=-0.38(-0.77)(+0.69)(stat)+/- 0.09(syst) and A(KS)(0)K(S)(0)=-0.38 +/- 0.38(stat)+/- 0.05(syst).

    DOI: 10.1103/PhysRevLett.100.121601

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  • Observation of D(s1)(2536)(+) -&gt; D(+)pi(-)K(+) and angular decomposition of D(s1)(2536)(+)-&gt; D*(+)K(S)(0) 査読

    V. Balagura, I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, A. M. Bakich, E. Barberio, A. Bay, K. Belous, V. Bhardwaj, U. Bitenc, A. Bondar, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, M. -C. Chang, Y. Chao, A. Chen, W. T. Chen, B. G. Cheon, R. Chistov, I. -S. Cho, Y. Choi, J. Dalseno, M. Danilov, A. Drutskoy, S. Eidelman, D. Epifanov, N. Gabyshev, A. Garmash, B. Golob, H. Ha, J. Haba, T. Hara, N. C. Hastings, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, Y. Hoshi, W. -S. Hou, H. J. Hyun, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, D. H. Kah, H. Kaji, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, H. O. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, C. C. Kuo, A. Kuzmin, Y. -J. Kwon, J. S. Lange, M. J. Lee, S. E. Lee, T. Lesiak, A. Limosani, S. -W. Lin, Y. Liu, D. Liventsev, F. Mandl, S. McOnie, T. Medvedeva, W. Mitaroff, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, D. Mohapatra, G. R. Moloney, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Palka, C. W. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, Y. Sakai, O. Schneider, K. Senyo, M. Shapkin, C. P. Shen, H. Shibuya, J. -G. Shiu, A. Somov, S. Stanic, M. Staric, T. Sumiyoshi, K. Tamai, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. Vervink, S. Villa, A. Vinokurova, C. C. Wang, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, E. Won, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW D   77 ( 3 )   1 - 10   2008年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    Using 462 fb(-1) of e(+)e(-) annihilation data recorded by the Belle detector, we report the first observation of the decay D(s1)(2536)(+)-&gt; D(+)pi(-)K(+). The ratio of branching fractions B(D(s1)(2536)(+)-&gt; D(+)pi(-)K(+))/B(D(s1)(2536)(+)-&gt; D*(+)K(0)) is measured to be (3.27 +/- 0.18 +/- 0.37)%. We also study the angular distributions in the D(s1)(2536)(+)-&gt; D*(+)K(S)(0) decay and measure the ratio of D- and S-wave amplitudes. The S-wave dominates, with a partial width of Gamma(S)/Gamma(total)=0.72 +/- 0.05 +/- 0.01.

    DOI: 10.1103/PhysRevD.77.032001

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  • Search for lepton flavor violating tau decays into three leptons 査読

    Y. Miyazaki e, al, The Belle Collaboration

    Physics Letters B   660 ( 3 )   154 - 160   2008年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.physletb.2007.12.046

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  • Observation of the psi(4415) -&gt; D(D)over-bar(2)(*)(2460) decay using initial-state radiation 査読

    G. Pakhlova, I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, A. M. Bakich, V. Balagura, E. Barberio, I. Bedny, K. Belous, U. Bitenc, A. Bondar, M. Bracko, J. Brodzicka, T. E. Browder, A. Chen, W. T. Chen, B. G. Cheon, C. -C. Chiang, R. Chistov, I. -S. Cho, Y. Choi, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, D. Epifanov, N. Gabyshev, B. Golob, H. Ha, J. Haba, K. Hayasaka, M. Hazumi, D. Heffernan, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, N. J. Joshi, D. H. Kah, J. H. Kang, T. Kawasaki, A. Kibayashi, H. Kichimi, H. J. Kim, H. O. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kumar, C. C. Kuo, A. Kuzmin, Y. -J. Kwon, J. S. Lange, M. J. Lee, S. E. Lee, T. Lesiak, S. -W. Lin, D. Liventsev, F. Mandl, D. Marlow, S. McOnie, T. Medvedeva, H. Miyake, R. Mizuk, D. Mohapatra, G. R. Moloney, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, H. Ozaki, P. Pakhlov, H. Park, K. S. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, A. Poluektov, Y. Sakai, O. Schneider, C. Schwanda, K. Senyo, M. Shapkin, C. P. Shen, H. Shibuya, J. -G. Shiu, B. Shwartz, J. B. Singh, A. Somov, S. Stanic, T. Sumiyoshi, F. Takasaki, K. Tamai, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, Y. Usov, G. Varner, A. Vinokurova, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, E. Won, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, C. Z. Yuan, C. C. Zhang, L. M. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW LETTERS   100 ( 6 )   1 - 6   2008年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report measurements of the exclusive cross section for e(+)e(-)-&gt; D(0)D(-)pi(+) over the center-of-mass energy range 4.0 GeV to 5.0 GeV with initial-state radiation and the first observation of the decay psi(4415)-&gt; D(0)D(-)pi(+). From a study of the resonant substructure in psi(4415) decay we conclude that the psi(4415)-&gt; D(0)D(-)pi(+) decay is dominated by psi(4415)-&gt; D (D) over bar (*)(2)(2460). We obtain B(psi(4415)-&gt; D(0)D(-)pi(+)(nonresonant))/B(psi(4415)-&gt; D (D) over bar (*)(2)(2460)-&gt; D(0)D(-)pi(+))&lt; 0.22 at 90% C.L. The analysis is based on a data sample collected with the Belle detector with an integrated luminosity of 673 fb(-1).

    DOI: 10.1103/PhysRevLett.100.062001

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  • Observation of e(+)e(-)-> K(+)K(-)J/psi via initial-state radiation at Belle 査読

    C. Z. Yuan, C. P. Shen, P. Wang, X. L. Wang, I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, A. M. Bakich, V. Balagura, E. Barberio, K. Belous, U. Bitenc, A. Bondar, M. Bracko, J. Brodzicka, T. E. Browder, Y. Chao, A. Chen, W. T. Chen, B. G. Cheon, R. Chistov, I. -S. Cho, Y. Choi, J. Dalseno, M. Danilov, A. Das, M. Dash, S. Eidelman, D. Epifanov, N. Gabyshev, B. Golob, H. Ha, J. Haba, K. Hayasaka, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, W. -S. Hou, H. J. Hyun, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, Y. Iwasaki, D. H. Kah, J. H. Kang, H. Kawai, T. Kawasaki, H. Kichimi, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kumar, C. C. Kuo, A. Kuzmin, Y. -J. Kwon, M. J. Lee, S. E. Lee, T. Lesiak, S. -W. Lin, D. Liventsev, F. Mandl, A. Matyja, S. McOnie, T. Medvedeva, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, D. Mohapatra, G. R. Moloney, Y. Nagasaka, M. Nakao, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, L. S. Peak, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, J. Schuemann, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, J. -G. Shiu, B. Shwartz, J. B. Singh, A. Somov, S. Stanic, M. Staric, T. Sumiyoshi, F. Takasaki, K. Tamai, M. Tanaka, Y. Teramoto, I. Tikhomirov, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. Vervink, S. Villa, C. C. Wang, C. H. Wang, Y. Watanabe, E. Won, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, C. C. Zhang, Z. P. Zhang, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW D   77 ( 1 )   1 - 6   2008年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    The process e(+)e(-)-> K(+)K(-)J/psi is observed for the first time via initial-state radiation. The cross section of e(+)e(-)-> K(+)K(-)J/psi for center-of-mass energies between threshold and 6.0 GeV is measured using 673 fb(-1) of data collected with the Belle detector on and off the Upsilon(4S) resonance. No significant signal for Y(4260)-> K(+)K(-)J/psi is observed, and we determine B(Y(4260)-> K(+)K(-)J/psi)Gamma(Y(4260)-> e(+)e(-))< 1.2 eV/c(2) at a 90% confidence level. We also find evidence for e(+)e(-)-> K(S)(0)K(S)(0)J/psi in the same data sample.

    DOI: 10.1103/PhysRevD.77.011105

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  • Time-dependent CP-violating asymmetry in B(0)-&gt;rho(0)gamma decays 査読

    Y. Ushiroda, K. Sumisawa, N. Taniguchi, I. Adachi, H. Aihara, K. Arinstein, T. Aushev, S. Bahinipati, A. M. Bakich, V. Balagura, E. Barberio, K. Belous, U. Bitenc, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, P. Chang, Y. Chao, A. Chen, W. T. Chen, B. G. Cheon, R. Chistov, I.-S. Cho, Y. Choi, J. Dalseno, M. Dash, S. Eidelman, D. Epifanov, N. Gabyshev, B. Golob, H. Ha, J. Haba, K. Hara, T. Hara, K. Hayasaka, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, W.-S. Hou, H. J. Hyun, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, Y. Iwasaki, D. H. Kah, J. H. Kang, H. Kawai, T. Kawasaki, H. Kichimi, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kumar, C. C. Kuo, A. Kuzmin, Y.-J. Kwon, M. J. Lee, S. E. Lee, T. Lesiak, S.-W. Lin, D. Liventsev, F. Mandl, S. McOnie, T. Medvedeva, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, D. Mohapatra, G. R. Moloney, Y. Nagasaka, M. Nakao, H. Nakazawa, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, P. Pakhlov, G. Pakhlov, C. W. Park, H. Park, L. S. Peak, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, J. Schuemann, A. J. Schwartz, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, H. Shibuya, J.-G. Shiu, B. Shwartz, J. B. Singh, A. Sokolov, A. Somov, S. Stanic, M. Stanic, T. Sumiyoshi, O. Tajima, F. Takasaki, K. Tamai, M. Tanaka, Y. Teramoto, I. Tikhomirov, K. Trabelsi, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. Vervink, S. Villa, C. C. Wang, C. H. Wang, M.-Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, E. Won, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, Z. P. Zhang, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW LETTERS   100 ( 2 )   1 - 5   2008年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the first measurement of CP-violation parameters in B(0)-&gt;rho(0)gamma decays based on a data sample of 657x10(6)B (B) over bar pairs collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We obtain the time-dependent and direct CP-violating parameters, S(rho)(0)gamma=-0.83 +/- 0.65(stat)+/- 0.18(syst) and A(rho)(0)gamma=-0.44 +/- 0.49(stat)+/- 0.14(syst), respectively.

    DOI: 10.1103/PhysRevLett.100.021602

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  • Measurement of the near-threshold e(+)e(-)-&gt; D(D)over-bar cross section using initial-state radiation 査読

    G. Pakhlova, I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, A. M. Bakich, V. Balagura, A. Bay, I. Bedny, U. Bitenc, A. Bondar, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, P. Chang, A. Chen, W. T. Chen, B. G. Cheon, R. Chistov, S. -K. Choi, Y. Choi, J. Dalseno, M. Danilov, A. Drutskoy, S. Eidelman, D. Epifanov, N. Gabyshev, B. Golob, K. Hayasaka, H. Hayashii, D. Heffernan, Y. Hoshi, W. -S. Hou, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, Y. Iwasaki, D. H. Kah, J. H. Kang, N. Katayama, H. Kawai, T. Kawasaki, A. Kibayashi, H. Kichimi, H. O. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krokovny, R. Kumar, C. C. Kuo, A. Kuzmin, Y. -J. Kwon, J. S. Lange, J. S. Lee, M. J. Lee, T. Lesiak, A. Limosani, S. -W. Lin, Y. Liu, D. Liventsev, F. Mandl, A. Matyja, S. McOnie, T. Medvedeva, W. Mitaroff, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, H. Ozaki, P. Pakhlov, C. W. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, A. Poluektov, H. Sahoo, Y. Sakai, O. Schneider, A. J. Schwartz, R. Seidl, K. Senyo, M. Shapkin, V. Shebalin, H. Shibuya, J. -G. Shiu, B. Shwartz, J. B. Singh, A. Sokolov, A. Somov, S. Stanic, M. Staric, T. Sumiyoshi, S. Y. Suzuki, F. Takasaki, K. Tamai, Y. Teramoto, I. Tikhomirov, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, Y. Usov, G. Varner, K. Vervink, S. Villa, A. Vinokurova, C. H. Wang, P. Wang, X. L. Wang, Y. Watanabe, B. D. Yabsley, C. Z. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW D   77 ( 1 )   1 - 5   2008年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report measurements of the exclusive cross section for e(+)e(-)-&gt; D (D) over bar, where D=D(0) or D(+), in the center-of-mass energy range from the D (D) over bar threshold to 5 GeV with initial-state radiation. The analysis is based on a data sample collected with the Belle detector with an integrated luminosity of 673 fb(-1).

    DOI: 10.1103/PhysRevD.77.011103

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  • Study of TeV neutrinos with upward showering muons in Super-Kamiokande 査読

    Desai, S., Abe, K., Hayato, Y., Iida, K., Ishihara, K., Kameda, J., Koshio, Y., Minamino, A., Mitsuda, C., Miura, M., Moriyama, S., Nakahata, M., Obayashi, Y., Ogawa, H., Shiozawa, M., Suzuki, Y., Takeda, A., Takeuchi, Y., Ueshima, K., Watanabe, H., Yamada, S., Higuchi, I., Ishihara, C., Ishitsuka, M., Kajita, T., Kaneyuki, K., Mitsuka, G., Nakayama, S., Nishino, H., Okumura, K., Saji, C., Takenaga, Y., Clark, S.T., Dufour, F., Kearns, E., Likhoded, S., Raaf, J.L., Stone, J.L., Sulak, L.R., Wang, W., Goldhaber, M., Casper, D., Cravens, J.P., Dunmore, J., Kropp, W.R., Liu, D.W., Mine, S., Regis, C., Smy, M.B., Sobel, H.W., Vagins, M.R., Ganezer, K.S., Hartfiel, B., Hill, J., Keig, W.E., Jang, J.S., Jeong, I.S., Kim, J.Y., Lim, I.T., Fechner, M., Scholberg, K., Tanimoto, N., Walter, C.W., Wendell, R., Tasaka, S., Guillian, G., Learned, J.G., Matsuno, S., Messier, M.D., Ichikawa, A.K., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nitta, K., Oyama, Y., Totsuka, Y., Suzuki, A.T., Hasegawa, M., Hiraide, K., Kato, I., Maesaka, H., Nakaya, T., Nishikawa, K., Sasaki, T., Sato, H., Yamamoto, S., Yokoyama, M., Haines, T.J., Dazeley, S., Hatakeyama, S., Svoboda, R., Swanson, M., Clough, A., Gran, R., Habig, A., Fukuda, Y., Sato, T., Itow, Y., Koike, T., Tanaka, T., Jung, C.K., Kato, T., Kobayashi, K., McGrew, C., Sarrat, A., Terri, R., Yanagisawa, C., Tamura, N., Idehara, Y., Sakuda, M., Sugihara, M., Kuno, Y., Yoshida, M., Kim, S.B., Yang, B.S., Yoo, J., Ishizuka, T., Okazawa, H., Choi, Y., Seo, H.K., Gando, Y., Hasegawa, T., Inoue, K., Furuse, Y., Ishii, H., Nishijima, K., Ishino, H., Watanabe, Y., Koshiba, M., Kielczewska, D., Berns, H., Shiraishi, K.K., Thrane, E., Washburn, K., Wilkes, R.J.

    Astropart.Phys.   29 ( 1 )   42 - 54   2008年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.astropartphys.2007.11.005

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  • Solar neutrino measurements in Super-Kamiokande-II 査読

    Cravens, J.P., Abe, K., Iida, T., Ishihara, K., Kameda, J., Koshio, Y., Minamino, A., Miura, M., Moriyama, S., Nakahata, Masayuki, Nakayama, S., Obayashi, Y., Ogawa, H., Sekiya, H., Shiozawa, M., Suzuki, Y., Takeda, A., Takeuchi, Yasuo, Ueshima, K., Watanabe, H., Yamada, S., Higuchi, I., Ishihara, C., Ishitsuka, M., Kajita, Takaaki, Kaneyuki, K., Mitsuka, G., Nishino, H., Okumura, K., Saji, Chouji, Takenaga, Y., Clark, George S., Dufour, F., Kearns, Edward Thomas, Likhoded, S., Litos, M., Raaf, Jennifer L., Stone, J.L., Sulak, Lawrence R., Wang, W., Goldhaber, M., Casper, David William, Dunmore, J., Kropp, William R., Liu, D.W., Mine, S., Regis, C., Smy, M.B., Sobel, Henry W., Vagins, M.R., Ganezer, K.S., Hill, J., Keig, W.E., Jang, J.S., Kim, J.Y., Lim, I.T., Fechner, Maximilien, Scholberg, K., Tanimoto, Naho, Walter, Christopher William, Wendell, Roger, Ellsworth, Robert W., Tasaka, S., Guillian, G., Learned, John Gregory, Matsuno, Shigenobu, Messier, Mark D., Watanabe, Y., Hayato, Y., Ichikawa, A.K., Ishida, Taku, Ishii, T., Iwashita, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nitta, K., Oyama, Y., Totsuka, Y., Suzuki, A.T., Hasegawa, M., Hiraide, Katsuki, Maesaka, H., Nakaya, Tsuyoshi, Nishikawa, K., Sasaki, T., Sato, H., Yamamoto, Sukeyasu Steven, Yokoyama, Masashi, Haines, T.J., Dazeley, S., Hatakeyama, S., Svoboda, Robert Charles, Sullivan, G.W., Turcan, D., Habig, Alec Thomas, Fukuda, Y., Sato, T., Itow, Yoshitaka, Koike, T., Tanaka, T., Jung, Chang Kee, Kato, T., Kobayashi, K., Malek, Matthew Samir, McGrew, Clark Duane, Sarrat, Antony, Terri, R., Yanagisawa, C., Tamura, N., Idehara, Y., Ikeda, M., Sakuda, Makoto, Sugihara, M., Kuno, Y., Yoshida, M., Kim, S.B., Yang, B.S., Yoo, J., Ishizuka, T., Okazawa, H., Choi, Y., Seo, H.K., Gando, Y., Hasegawa, T., Inoue, Kaiki Taro, Furuse, Y., Ishii, H., Nishijima, K., Ishino, H., Koshiba, M., Chen, S., Deng, Z., Liu, Y., Kielczewska, D., Berns, Hans-Gerd, Gran, Richard W., Shiraishi, K.K., Stachyra, A., Thrane, E., Washburn, K., Wilkes, R.Jeffrey

    Phys.Rev.D   78 ( 032002 )   032002 - 032002   2008年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.78.032002

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  • Precise measurement of hadronic τ-decays in modes with η mesons

    K. Abe, I. Adachi, H. Aihara, K. Arinstein, T. Aso, V. Aulchenko, T. Aushev, T. Aushev, T. Aziz, S. Bahinipati, A. M. Bakich, V. Balagura, Y. Ban, S. Banerjee, E. Barberio, A. Bay, I. Bedny, K. Belous, V. Bhardwaj, U. Bitenc, S. Blyth, A. Bondar, A. Bozek, M. Bracko, M. Bracko, J. Brodzicka, T. E. Browder, M. C. Chang, P. Chang, Y. Chao, A. Chen, K. F. Chen, W. T. Chen, B. G. Cheon, C. C. Chiang, R. Chistov, I. S. Cho, S. K. Choi, Y. Choi, Y. K. Choi, S. Cole, J. Dalseno, M. Danilov, A. Das, M. Dash, J. Dragic, A. Drutskoy, S. Eidelman, D. Epifanov, S. Fratina, H. Fujii, M. Fujikawa, N. Gabyshev, A. Garmash, A. Go, G. Gokhroo, P. Goldenzweig, B. Golob, B. Golob, M. Grosse Perdekamp, M. Grosse Perdekamp, H. Guler, H. Ha, J. Haba, K. Hara, T. Hara, Y. Hasegawa, N. C. Hastings, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, T. Higuchi, L. Hinz, H. Hoedlmoser, T. Hokuue, Y. Horii, Y. Hoshi, K. Hoshina, S. Hou, W. S. Hou, Y. B. Hsiung, H. J. Hyun, Y. Igarashi, T. Iijima, K. Ikado, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwabuchi, M. Iwasaki, Y. Iwasaki, C. Jacoby, N. J. Joshi, M. Kaga, D. H. Kah, H. Kaji, S. Kajiwara, H. Kakuno

    23rd International Symposium on Lepton-Photon Interactions at High Energy, LP 2007   2007年12月

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    We have measured branching fractions of hadronic τdecays involving an η meson using 485 fb-1 of data collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain the following branching fractions: B(τ - → K-ην) = (1.62 ± 0.05 ± 0.09) × 10-4, B(τ - → K-η0π=ηντ ) = (4.7 ± 1.1 ± 0.4) × 10-5, B(τ - → π-π0ηντ ) = (1.39 ± 0.03 ± 0.07) × 10-3, and B(τ - → K-ην7tau; ) = (1.13 ±0.19 ± 0.07) ×10-4 improving the accuracy compared to the best previous measurements by factors of six, eight, four and four, respectively.

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  • Status and upgrade plans of the Belle silicon vertex detector 査読

    H. Aihara, T. Arakawa, Y. Asano, T. Aso, A. Bakich, M. Barbero, T. Browder, M. C. Chang, Y. Chao, K. F. Chen, S. Chidzik, A. Chouvikov, Y. K. Choi, A. Das, J. Dalseno, S. Fratina, M. Friedl, Y. Fujiyama, J. Haba, K. Hara, T. Hara, B. Harrop, K. Hayashi, M. Hazumi, D. Heffemani, T. Higuchi, T. Hirakawa, C. Irmler, H. Ishino, N. K. Joshi, S. Kajiwara, H. Kakuno, T. Kameshima, T. Kawasaki, A. Kibayashi, Y. J. Kim, S. Koike, S. Korpar, P. Krian, H. Kurashiro, A. Kusaka, D. Marlow, H. Miyake, G. R. Moloney, Y. Nakahamas, Z. Natkaniec, S. Okuno, S. Ono, W. Ostrowicz, H. Ozaki, L. Peak, M. Pernicka, M. Rosen, M. Rozanska, N. Sato, S. Schmid, J. Sch mann, S. Stanic, H. Steininger, K. Sumisawa, O. Tajima, T. Takahashi, N. Tamura, M. Tanaka, N. Tani, G. N. Taylor, K. Trabelsi, T. Tsuboyama, K. Uchida, K. Ueno, Y. Ushiroda, G. Varner, K. Varvell, Y. S. Velikzhanin, C. C. Wang, M. Z. Wang, M. Watanabe, Y. Watanabe, H. Yamamoto, Y. Yamashita, T. Ziegler

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   582 ( 3 )   709 - 713   2007年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

    The second generation of Belle Silicon Vertex Detector (SVD) has been efficiently operated for more than three years. With increasing beam-induced background, a degradation of the detector performance is expected. To avoid such a difficulty, we are planing a next upgrade, the third generation of the SVD. Currently, its design is almost finalized. (c) 2007 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.nima.2007.07.057

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  • Analysis method for search for B-0 -&gt; 1(+)1(-) at Belle experiment 査読

    S. Ono, H. Ishino, H. Togasaki

    PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES   40 ( 2 )   418 - 421   2007年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

    The Belle experiment is performed at High Energy Accelerator Research Organization (KEK) at Tsukuba, Japan. A large number of B mesons are generated at the KEKB e(+) e(-) asymmetric-energy collider. We report on the status of search for decays B-0 -&gt; e(+)e(-) and B-0 -&gt; mu(+)mu(-) through analysis of the data collected by Belle detector. (C) 2007 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.physe.2007.06.064

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  • R&D of a pixel sensor based on 0.15 mu m fully depleted SOI technology 査読

    Toru Tsuboyama, Yasuo Arai, Koichi Fukuda, Kazuhiko Hara, Hirokazu Hayashi, Masashi Hazumi, Jiro Ida, Hirokazu Ikeda, Yoichi Ikegami, Hirokazu Ishino, Takeo Kawasaki, Takashi Kohriki, Hirotaka Komatsubara, Elena Martin, Hideki Miyake, Ai Mochizuki, Morifumi Ohno, Yuuji Saegusa, Hiro Tajima, Osamu Tajima, Tomiaki Takahashi, Susumu Terada, Yoshinobu Unno, Yutaka Ushiroda, Gary Varner

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   582 ( 3 )   861 - 865   2007年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

    Development of a monolithic pixel detector based on Sol (silicon on insulator) technology was started at KEK in 2005. The substrate of the Sol wafer is used as a radiation sensor. At end of 2005, we submitted several test-structure group (TEG) chips for the 150 run, fully depleted CMOS process. The TEG designs and preliminary results are presented. (c) 2007 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.nima.2007.07.111

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  • Observation of B-0 -&gt; D*-tau(+)nu(tau) decay at belle 査読

    A. Matyja, M. Rozanska, I. Adachi, H. Aihara, V. Aulchenko, T. Aushev, S. Bahinipati, A. M. Bakich, V. Balagura, E. Barberio, I. Bedny, V. Bhardwaj, U. Bitenc, A. Bondar, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, M. -C. Chang, P. Chang, A. Chen, K. -F. Chen, B. G. Cheon, R. Chistov, I. -S. Cho, Y. Choi, Y. K. Choi, J. Dalseno, M. Dash, S. Eidelman, S. Fratina, N. Gabyshev, B. Golob, H. Ha, J. Haba, T. Hara, K. Hayasaka, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, W. -S. Hou, H. J. Hyun, T. Iijima, K. Ikado, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, Y. Iwasaki, H. Kaji, S. Kajiwara, J. H. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, Y. J. Kim, K. Kinoshita, S. Korpar, Y. Kozakai, P. Krizan, P. Krokovny, R. Kumar, C. C. Kuo, Y. -J. Kwon, J. S. Lee, S. E. Lee, T. Lesiak, S. -W. Lin, Y. Liu, D. Liventsev, F. Mandl, S. McOnie, T. Medvedeva, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, T. Mori, Y. Nagasaka, I. Nakamura, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Palka, H. Park, K. S. Park, R. Pestotnik, L. E. Piilonen, Y. Sakai, O. Schneider, J. Schumann, C. Schwanda, A. J. Schwartz, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, H. Shibuya, S. Shinomiya, J. -G. Shiu, J. B. Singh, A. Sokolov, A. Somov, S. Stanic, M. Staric, K. Sumisawa, T. Sumiyoshi, O. Tajima, F. Takasaki, M. Tanaka, G. N. Taylor, Y. Teramoto, K. Trabelsi S. Uehara, Y. Unno, S. Uno, P. Urquijo, Y. Ushiroda, G. Varner, K. E. Varvell, K. Vervink, S. Villa, C. C. Wang, C. H. Wang, P. Wang, Y. Watanabe, E. Won, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, Z. P. Zhang, A. Zupanc

    PHYSICAL REVIEW LETTERS   99 ( 19 )   1 - 5   2007年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report an observation of the decay B-0 -&gt; D*-tau(+)nu(tau) in a data sample containing 535x10(6) B (B) over bar pairs collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We find a signal with a significance of 5.2 sigma and measure the branching fraction B(B-0 -&gt; D*-tau(+)nu(tau))=(2.02(-0.37)(+0.40)(stat)+/- 0.37(syst))%. This is the first observation of an exclusive B decay with a b -&gt; c tau nu(tau) transition.

    DOI: 10.1103/PhysRevLett.99.191807

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  • Search for B -&gt; h((*))nu(nu)over-bar decays at Belle 査読

    K. -F. Chen, I. Adachi, H. Aihara, V. Aulchenko, T. Aushev, S. Bahinipati, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, K. Belous, U. Bitenc, A. Bondar, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, M. -C. Chang, P. Chang, Y. Chao, A. Chen, B. G. Cheon, C. -C. Chiang, I. -S. Cho, Y. Choi, Y. K. Choi, S. Cole, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, S. Fratina, N. Gabyshev, B. Golob, H. Ha, J. Haba, T. Hara, K. Hayasaka, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Ikado, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, N. J. Joshi, S. Kajiwara, J. H. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kumar, C. C. Kuo, A. Kuzmin, Y. -J. Kwon, J. S. Lee, S. E. Lee, T. Lesiak, S. -W. Lin, Y. Liu, D. Liventsev, F. Mandl, D. Marlow, A. Matyja, S. McOnie, T. Medvedeva, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, Y. Nagasaka, I. Nakamura, M. Nakao, S. Nishida, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Park, K. S. Park, R. Pestotnik, L. E. Piilonen, Y. Sakai, O. Schneider, J. Schuemann, C. Schwanda, A. J. Schwartz, R. Seidl, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, H. Shibuya, S. Shinomiya, J. -G. Shiu, B. Shwartz, J. B. Singh, A. Sokolov, A. Somov, S. Stanic, M. Staric, K. Sumisawa, T. Sumiyoshi, O. Tajima, F. Takasaki, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, K. Trabelsi, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. E. Varvell, K. Vervink, S. Villa, A. Vinokurova, C. C. Wang, C. H. Wang, M. -Z. Wang, P. Wang, Y. Watanabe, R. Wedd, E. Won, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, C. C. Zhang, Z. P. Zhang, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW LETTERS   99 ( 22 )   1 - 5   2007年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present a search for the rare decays B -&gt; h((*))nu(nu) over bar, where h((*)) stands for a light meson. A data sample of 535x10(6) B (B) over bar pairs collected with the Belle detector at the KEKB e(+)e(-) collider is used. Signal candidates are required to have an accompanying B meson fully reconstructed in a hadronic mode and signal side particles consistent with a single h((*)) meson. No significant signal is observed and we set upper limits on the branching fractions at 90% confidence level. The limits on B-0 -&gt; K-*0 nu(nu) over bar and B+-&gt; K+nu(nu) over bar decays are more stringent than the previous constraints, while the first searches for B-0 -&gt; K-0 nu(nu) over bar, pi(0)nu(nu) over bar, rho(0)nu(nu) over bar, phi nu(nu) over bar and B+-&gt; K*+nu(nu) over bar, rho(+)nu(nu) over bar are reported.

    DOI: 10.1103/PhysRevLett.99.221802

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  • Search for the CP-Violating Decays Upsilon(4S)-&gt;(BB0)-B-0 -&gt; J/psi K-S(0)+J/psi(eta(c))K-S(0) 査読

    O. Tajima, M. Hazumi, I. Adachi, H. Aihara, V. Aulchenko, T. Aushev, A. M. Bakich, E. Barberio, A. Bay, I. Bedny, V. Bhardwaj, U. Bitenc, A. Bozek, M. Bracko, T. E. Browder, M. -C. Chang, P. Chang, A. Chen, K. -F. Chen, W. T. Chen, B. G. Cheon, C. -C. Chiang, R. Chistov, I. -S. Cho, Y. Choi, Y. K. Choi, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, D. Epifanov, A. Go, G. Gokhroo, B. Golob, J. Haba, K. Hayasaka, H. Hayashii, D. Heffernan, T. Hokuue, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Ikado, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, N. J. Joshi, D. H. Kah, H. Kaji, J. H. Kang, S. U. Kataoka, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, H. O. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kumar, C. C. Kuo, Y. -J. Kwon, J. S. Lange, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, J. Li, S. -W. Lin, D. Liventsev, F. Mandl, D. Marlow, S. McOnie, T. Medvedeva, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, R. Mizuk, D. Mohapatra, Y. Nagasaka, E. Nakano, M. Nakao, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, A. Sekiya, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, H. Shibuya, J. -G. Shiu, B. Shwartz, J. B. Singh, A. Sokolov, A. Somov, S. Stanic, M. Staric, K. Sumisawa, T. Sumiyoshi, F. Takasaki, M. Tanaka, G. N. Taylor, Y. Teramoto, K. Trabelsi, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. E. Varvell, K. Vervink, S. Villa, A. Vinokurova, C. C. Wang, C. H. Wang, M. -Z. Wang, P. Wang, Y. Watanabe, R. Wedd, E. Won, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, C. Z. Yuan, Y. Yusa, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW LETTERS   99 ( 21 )   1 - 5   2007年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the first search for CP-violating decays of the Y(4S) using a data sample that contains 535 x 10(6) Y(4S) mesons with the Belle detector at the KEKB asymmetric-energy e(+) e(-) collider. A partial reconstruction technique is employed to enhance the signal sensitivity. No significant signals were observed. We obtain an upper limit of 4 x 10(-7) at the 90% confidence level for the branching fractions of the CP violating modes, Y(4S) -&gt; B-0(B) over bar (0) -&gt; J/psi K-S(0) + J/psi(eta K-c)(S)0. Extrapolating the result, we find that an observation with 5 sigma significance is expected with a 30 ab(-1) data sample, which is within the reach of a future super B factory.

    DOI: 10.1103/PhysRevLett.99.211601

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  • Measurements of time-dependent CP violation in B-0 -&gt;omega K-S(0), f(0)(980)K-S(0), K-S(0)pi(0) and (K+K-KS0) decays 査読

    Y. Chao, K. -F. Chen, H. Miyake, O. Tajima, K. Trabelsi, K. Abe, K. Abe, I. Adachi, H. Aihara, D. Anipko, A. M. Bakich, E. Barberio, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, M. Bracko, T. E. Browder, M. -C. Chang, P. Chang, A. Chen, W. T. Chen, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, S. Cole, J. Dalseno, M. Danilov, M. Dash, J. Dragic, A. Drutskoy, S. Eidelman, S. Fratina, N. Gabyshev, B. Golob, H. Ha, J. Haba, K. Hara, T. Hara, N. C. Hastings, H. Hayashii, M. Hazumi, D. Heffernan, T. Higuchi, T. Hokuue, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, T. Iijima, K. Ikado, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, H. Kaji, J. H. Kang, P. Kapusta, H. Kawai, T. Kawasaki, H. J. Kim, H. O. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kulasiri, R. Kumar, C. C. Kuo, A. Kuzmin, Y. -J. Kwon, M. J. Lee, T. Lesiak, A. Limosani, S. -W. Lin, D. Liventsev, T. Matsumoto, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, D. Mohapatra, G. R. Moloney, Y. Nakahama, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, S. Okuno, S. L. Olsen, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, R. Pestotnik, L. E. Piilonen, Y. Sakai, N. Satoyama, T. Schietinger, O. Schneider, A. J. Schwartz, R. Seidl, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, J. B. Singh, A. Somov, N. Soni, S. Stanic, M. Staric, H. Stoeck, K. Sumisawa, T. Sumiyoshi, S. Suzuki, F. Takasaki, K. Tamai, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, I. Tikhomirov, T. Tsukamoto, S. Uehara, K. Ueno, Y. Unno, S. Uno, Y. Ushiroda, Y. Usov, G. Varner, K. E. Varvell, S. Villa, A. Vinokurova, C. H. Wang, Y. Watanabe, E. Won, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, Y. Yusa, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   76 ( 9 )   1 - 7   2007年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present measurements of time-dependent CP asymmetries in B-0 -&gt;omega K-S(0), f(0)(980)K-S(0), K-S(0)pi(0) and (K+K-KS0) decays based on a sample of 535x10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. One neutral B meson is fully reconstructed in one of the specified decay channels, and the flavor of the accompanying B meson is identified from its decay products. CP-violation parameters for each of the decay modes are obtained from the asymmetries in the distributions of the proper-time intervals between the two B decays.

    DOI: 10.1103/PhysRevD.76.091103

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  • Measurement of branching fraction and time-dependent CP asymmetry parameters in B-0 -&gt;(D*+D*-KS0) decays 査読

    J. Dalseno, I. Adachi, H. Aihara, T. Aushev, A. M. Bakich, V. Balagura, A. Bay, U. Bitenc, I. Bizjak, A. Bozek, M. Bracko, T. E. Browder, Y. Chao, A. Chen, B. G. Cheon, R. Chistov, I. -S. Cho, Y. Choi, Y. K. Choi, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, A. Go, H. Ha, K. Hayasaka, M. Hazumi, D. Heffernan, T. Hokuue, H. J. Hyun, K. Inami, A. Ishikawa, H. Ishino, M. Iwasaki, Y. Iwasaki, N. J. Joshi, D. H. Kah, J. H. Kang, P. Kapusta, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, Y. J. Kim, K. Kinoshita, P. Krizan, P. Krokovny, R. Kumar, C. C. Kuo, A. Kuzmin, Y. -J. Kwon, J. S. Lee, S. E. Lee, T. Lesiak, J. Li, A. Limosani, S. -W. Lin, D. Liventsev, F. Mandl, T. Matsumoto, S. McOnie, T. Medvedeva, W. Mitaroff, H. Miyake, H. Miyata, G. R. Moloney, E. Nakano, M. Nakao, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, Y. Onuki, W. Ostrowicz, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, K. S. Park, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, J. Schuemann, R. Seidl, A. Sekiya, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, J. B. Singh, A. Sokolov, A. Somov, S. Stanic, M. Staric, H. Stoeck, K. Sumisawa, T. Sumiyoshi, F. Takasaki, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, T. Tsukamoto, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, P. Urquijo, G. Varner, S. Villa, A. Vinokurova, C. C. Wang, C. H. Wang, Y. Watanabe, R. Wedd, E. Won, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, Z. P. Zhang, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW D   76 ( 7 )   1 - 9   2007年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present a measurement of the branching fraction and time-dependent CP violation parameters for B-0 -&gt;(D*+D*-KS0) decays. These results are obtained from a 414 fb(-1) data sample that contains 449x10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We obtain the branching fraction, B(B-0 -&gt;(D*+D*-KS0))=[3.4 +/- 0.4(stat)+/- 0.7(syst)]x10(-3), which is in agreement with the current world average. We also obtain an upper limit on the product branching fraction for a possible two-body decay, B(B-0 -&gt; D-s1(+)(2536)D*-)B(D-s1(+)(2536)-&gt;(D*+KS0))&lt; 7.1x10(-4) (90% CL). In the traditional 2-parameter time-dependent CP analysis, we measure the CP violation parameters, A(CP)=-0.01(-0.28)(+0.28)(stat)+/- 0.09(syst), Dsin2 phi(1)=0.06(-0.44)(+0.45)(stat)+/- 0.06(syst). No evidence for either mixing-induced or direct CP violation is found. In a 3-parameter fit sensitive to cos2 phi(1) performed in the half-Dalitz spaces, s(-)&lt;= s(+) and s(-)&gt; s(+), where s(+/-)equivalent to m(2)((DKS0)-K-*+/-), we extract the CP violation parameters, J(c)/J(0)=0.60(-0.28)(+0.25)(stat)+/- 0.08(syst), 2J(s1)/J(0)sin2 phi(1)=-0.17(-0.42)(+0.42)(stat)+/- 0.09(syst), 2J(s2)/J(0)cos2 phi(1)=-0.23(-0.41)(+0.43)(stat)+/- 0.13(syst). A large value of J(c)/J(0) would indicate a significant resonant contribution from a broad unknown D-s(**+) state. Although the sign of the factor, 2J(s2)/J(0), can be deduced from theory, no conclusion can be drawn regarding the sign of cos2 phi(1) given the errors.

    DOI: 10.1103/PhysRevD.76.072004

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  • Observation of two resonant structures in e(+)e(-)-&gt;pi(+)pi(-)psi(2S) via initial-state radiation at Belle 査読

    X. L. Wang, C. Z. Yuan, C. P. Shen, P. Wang, I. Adachi, H. Aihara, K. Arinstein, T. Aushev, A. M. Bakich, E. Barberio, I. Bedny, V. Bhardwaj, U. Bitenc, S. Blyth, A. Bondar, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, P. Chang, A. Chen, K.-F. Chen, B. G. Cheon, C.-C. Chiang, R. Chistov, I.-S. Cho, S.-K. Choi, Y. Choi, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, D. Epifanov, N. Gabyshev, A. Go, G. Gokhroo, H. Ha, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, Y. Hoshi, W.-S. Hou, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, Y. Iwasaki, D. H. Kah, J. H. Kang, H. Kawai, T. Kawasaki, H. Kichimi, H. O. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kumar, C. C. Kuo, A. Kuzmin, J. S. Lange, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, A. Limosani, S.-W. Lin, Y. Liu, D. Liventsev, F. Mandl, S. McOnie, T. Medvedeva, K. Miyabayashi, H. Miyake, H. Miyata, R. Mizuk, T. Mori, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Palka, C. W. Park, H. Park, K. S. Park, R. Pestotnik, L. E. Piilonen, A. Poluektov, H. Sahoo, Y. Sakai, O. Schneider, A. Sekiya, M. E. Sevior, M. Shapkin, H. Shibuya, J.-G. Shiu, B. Shwartz, J. B. Singh, A. Sokolov, A. Somov, S. Stanic, M. Staric, T. Sumiyoshi, F. Takasaki, K. Tamai, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, P. Urquijo, G. Varner, S. Villa, A. Vinokurova, C. C. Wang, C. H. Wang, Y. Watanabe, E. Won, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW LETTERS   99 ( 14 )   1 - 5   2007年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    The cross section for e(+)e(-)-&gt;pi(+)pi(-)psi(2S) between threshold and root s=5.5 GeV is measured using 673 fb(-1) of data on and off the Upsilon(4S) resonance collected with the Belle detector at KEKB. Two resonant structures are observed in the pi(+)pi(-)psi(2S) invariant-mass distribution, one at 4361 +/- 9 +/- 9 MeV/c(2) with a width of 74 +/- 15 +/- 10 MeV/c(2), and another at 4664 +/- 11 +/- 5 MeV/c(2) with a width of 48 +/- 15 +/- 3 MeV/c(2), if the mass spectrum is parametrized with the coherent sum of two Breit-Wigner functions. These values do not match those of any of the known charmonium states.

    DOI: 10.1103/PhysRevLett.99.142002

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  • Measurements of branching fractions for b -&gt; K pi and b -&gt;pi pi decays 査読

    S.-W. Lin, P. Chang, K. Abe, K. Abe, I. Adachi, H. Aihara, D. Anipko, V. Aulchenko, T. Aushev, S. Bahinipati, A. M. Bakich, E. Barberio, I. Bedny, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, M.-C. Chang, Y. Chao, A. Chen, K.-F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, Y. K. Choi, J. Dalseno, M. Dash, J. Dragic, A. Drutskoy, S. Eidelman, S. Fratina, N. Gabyshev, A. Garmash, A. Go, B. Golob, H. Ha, J. Haba, T. Hara, H. Hayashii, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, T. Iijima, K. Ikado, A. Imoto, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, H. Kaji, P. Kapusta, S. U. Kataoka, H. Kawai, T. Kawasaki, H. Kichimi, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kulasiri, R. Kumar, A. Kuzmin, Y.-J. Kwon, M. J. Lee, T. Lesiak, D. Liventsev, J. MacNaughton, F. Mandl, T. Matsumoto, S. McOnie, T. Medvedeva, W. Mitaroff, H. Miyake, H. Miyata, Y. Miyazaki, G. R. Moloney, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, N. Satoyama, T. Schietinger, O. Schneider, J. Schuemann, A. J. Schwartz, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, B. Shwartz, J. B. Singh, A. Somov, N. Soni, S. Stanic, M. Staric, H. Stoeck, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, F. Takasaki, K. Tamai, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, I. Tikhomirov, T. Tsukamoto, S. Uehara, K. Ueno, Y. Unno, S. Uno, Y. Ushiroda, G. Varner, K. E. Varvell, S. Villa, C. C. Wang, C. H. Wang, M.-Z. Wang, Y. Watanabe, J. Wicht, E. Won, Q. L. Xie, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, Y. Yusa, C. C. Zhang, Z. P. Zhang, A. Zupanc

    PHYSICAL REVIEW LETTERS   99 ( 12 )   1 - 5   2007年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report measurements of branching fractions for B -&gt; K pi and B -&gt;pi pi decays based on a data sample of 449x10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We also measure the ratios of partial widths for B -&gt; K pi decays, namely R-c equivalent to 2 Gamma(B+-&gt; K+pi(0))/Gamma(B+-&gt; K-0 pi(+))=1.08 +/- 0.06 +/- 0.08 and R-n equivalent to Gamma(B-0 -&gt; K+pi(-))/2 Gamma(B-0 -&gt; K-0 pi(0))=1.08 +/- 0.08 +/- 0.08, where the first and the second errors are statistical and systematic, respectively. These ratios are sensitive to enhanced electroweak penguin contributions from new physics; the new measurements are, however, consistent with standard model expectations.

    DOI: 10.1103/PhysRevLett.99.121601

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  • Measurement of Einstein-Podolsky-Rosen-type flavor entanglement in Y(4S) -&gt; B-0(B)over-bar0 decays 査読

    A. Go, A. Bay, K. Abe, H. Aihara, D. Anipko, V. Aulchenko, T. Aushev, A. M. Bakich, E. Barberio, K. Belous, U. Bitenc, I. Bizjak, S. Blyth, A. Bozek, M. Bracko, T. E. Browder, P. Chang, Y. Chao, A. Chen, K.-F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, S. Cole, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, D. Epifanov, S. Fratina, N. Gabyshev, T. Gershon, G. Gokhroo, B. Golob, A. Gorisek, H. Ha, N. C. Hastings, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, S. Hou, W.-S. Hou, T. Iijima, K. Ikado, A. Imoto, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, C. Jacoby, J. H. Kang, N. Katayama, T. Kawasaki, H. R. Khan, H. Kichimi, H. J. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kulasiri, R. Kumar, C. C. Kuo, A. Kuzmin, Y.-J. Kwon, J. S. Lange, J. Lee, M. J. Lee, T. Lesiak, A. Limosani, S.-W. Lin, Y. Liu, D. Liventsev, T. Matsumoto, A. Matyja, S. McOnie, W. Mitaroff, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, T. Mori, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. L. Olsen, Y. Onuki, P. Pakhlov, G. Pakhlova, H. Palka, C. W. Park, H. Park, L. S. Peak, R. Pestotnik, M. Peters, L. E. Piilonen, H. Sahoo, Y. Sakai, N. Satoyama, T. Schietinger, O. Schneider, J. Schumann, A. J. Schwartz, R. Seidl, K. Senyo, M. Shapkin, H. Shibuya, B. Shwartz, J. B. Singh, A. Somov, N. Soni, S. Stanic, M. Staric, H. Stoeck, T. Sumiyoshi, F. Takasaki, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, I. Tikhomirov, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, K. Ueno, Y. Unno, S. Uno, G. Varner, S. Villa, C. C. Wang, C. H. Wang, M.-Z. Wang, Y. Watanabe, J. Wicht, E. Won, Q. L. Xie, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, Z. P. Zhang, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW LETTERS   99 ( 13 )   1 - 6   2007年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    The neutral B meson pair produced at the Y(4S) should exhibit a nonlocal correlation of the type discussed by Einstein, Podolsky, and Rosen. We measure this correlation using the time-dependent flavor asymmetry of semileptonic B-0 decays, which we compare with predictions from quantum mechanics and two local realistic models. The data are consistent with quantum mechanics, and inconsistent with the other models. Assuming that some B pairs disentangle to produce B-0 and (B) over tilde (0) with definite flavor, we find a decoherent fraction of 0.029 +/- 0.057, consistent with no decoherence.

    DOI: 10.1103/PhysRevLett.99.131802

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  • Measurement of D-0-(D)over-bar(0) mixing parameters in D-0 -> K-s pi(+)pi(-) decays 査読

    L. M. Zhang, Z. P. Zhang, I. Adachi, H. Aihara, V. Aulchenko, T. Aushev, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, K. Belous, U. Bitenc, A. Bondar, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, P. Chang, Y. Chao, A. Chen, K.-F. Chen, W. T. Chen, B. G. Cheon, C.-C. Chiang, I.-S. Cho, Y. Choi, Y. K. Choi, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, D. Epifanov, S. Fratina, N. Gabyshev, G. Gokhroo, B. Golob, H. Ha, J. Haba, T. Hara, N. C. Hastings, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Ikado, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, N. J. Joshi, D. H. Kah, H. Kaji, S. Kajiwara, J. H. Kang, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, H. O. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kumar, C. C. Kuo, A. Kuzmin, Y.-J. Kwon, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, J. Li, A. Limosani, S.-W. Lin, Y. Liu, D. Liventsev, T. Matsumoto, A. Matyja, S. McOnie, T. Medvedeva, W. Mitaroff, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, Y. Nagasaka, I. Nakamura, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, W. Ostrowicz, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, A. Poluektov, H. Sahoo, Y. Sakai, O. Schneider, J. Schumann, C. Schwanda, A. J. Schwartz, R. Seidl, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, S. Shinomiya, J.-G. Shiu, B. Shwartz, J. B. Singh, A. Sokolov, A. Somov, N. Soni, S. Stanic, M. Staric, H. Stoeck, K. Sumisawa, T. Sumiyoshi, S. Suzuki, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, I. Tikhomirov, T. Tsuboyama, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. Vervink, S. Villa, A. Vinokurova, C. H. Wang, M.-Z. Wang, P. Wang, Y. Watanabe, E. Won, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, C. Z. Yuan, C. C. Zhang, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW LETTERS   99 ( 13 )   1 - 6   2007年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a measurement of D-0-(D) over bar (0) mixing parameters in D-0 -> K-S(0)pi(+)pi(-) decays using a time-dependent Dalitz-plot analysis. We first assume CP conservation and subsequently allow for CP violation. The results are based on 540 fb(-1) of data accumulated with the Belle detector at the KEKB e(+)e(-) collider. Assuming negligible CP violation, we measure the mixing parameters x=(0.80 +/- 0.29(-0.07-0.14)(+0.09+0.10))% and y=(0.33 +/- 0.24(-0.12-0.08)(+0.08+0.06))%, where the errors are statistical, experimental systematic, and systematic due to the Dalitz decay model, respectively. Allowing for CP violation, we obtain the CP-violating parameters |q/p|=0.86(-0.29-0.03)(+0.30+0.06)+/- 0.08 and arg(q/p)=(-14(-18-3-4)(+16+5+2))degrees.

    DOI: 10.1103/PhysRevLett.99.131803

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  • Evaluation of OKISOI technology 査読

    Y. Ikegami, Y. Arai, K. Hara, M. Hazumi, H. Ikeda, H. Ishino, T. Kohrikia, H. Miyake, A. Mochizuki, S. Terada, T. Tsuboyama, Y. Unno

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   579 ( 2 )   706 - 711   2007年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

    The silicon-on-insulator (SOI) CMOS technology has a number of advantages over the standard bulk CMOS technology, such as no latch-up effect, high speed and low power. The fully depleted SOI (FD-SOI) technology provided by OKI Electric Industry Co., Ltd. is realizing the full features of the advantages with lowest junction capacitance. Test element group (TEG) structures of transistors were fabricated and irradiated with protons. The first results are presented. (c) 2007 Published by Elsevier B.V.

    DOI: 10.1016/j.nima.2007.05.272

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  • Improved measurement of CP-violating parameters in B -&gt;rho(+)rho(-) decays 査読

    A. Somov, A. J. Schwartz, I. Adachi, H. Aihara, D. Anipko, V. Aulchenko, T. Aushev, A. M. Bakich, I. Bedny, U. Bitenc, I. Bizjak, A. Bondar, M. Bracko, T. E. Browder, M.-C. Chang, Y. Chao, A. Chen, K.-F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, I.-S. Cho, Y. Choi, Y. K. Choi, S. Cole, J. Dalseno, M. Dash, J. Dragic, A. Drutskoy, S. Eidelman, S. Fratina, G. Gokhroo, B. Golob, H. Ha, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, W.-S. Hou, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, N. Joshi, D. H. Kah, J. H. Kang, N. Katayama, H. Kichimi, H. O. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kulasiri, R. Kumar, C. C. Kuo, A. Kuzmin, Y.-J. Kwon, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, A. Limosani, S.-W. Lin, D. Marlow, T. Matsumoto, S. McOnie, T. Medvedeva, W. Mitaroff, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, D. Mohapatra, G. R. Moloney, M. Nakao, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, J. Schuemann, K. Senyo, M. Shapkin, C. P. Shen, H. Shibuya, B. Shwartz, M. Staric, H. Stoeck, K. Sumisawa, T. Sumiyoshi, F. Takasaki, N. Tamura, M. Tanaka, Y. Teramoto, X. C. Tian, K. Trabelsi, T. Tsukamoto, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. E. Varvell, S. Villa, A. Vinokurova, C. C. Wang, C. H. Wang, M.-Z. Wang, P. Wang, Y. Watanabe, E. Won, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, Z. P. Zhang, A. Zupanc

    PHYSICAL REVIEW D   76 ( 1 )   1 - 7   2007年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present a measurement of the CP-violating asymmetry in B-0 -&gt;rho(+)rho(-) decays using 535x10(6) B (B) over bar pairs collected with the Belle detector at the KEKB e(+)e(-) collider. We measure CP-violating coefficients A=0.16 +/- 0.21(stat)+/- 0.08(syst) and S=0.19 +/- 0.30(stat)+/- 0.08(syst). These values are used to determine the unitarity triangle angle phi(2) using an isospin analysis; the solution consistent with the standard model lies in the range 54 degrees &lt;phi(2)&lt; 113 degrees at the 90% confidence level.

    DOI: 10.1103/PhysRevD.76.011104

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  • Study of (B)over-bar(0)-&gt; D-0 pi(+)pi(-) decays 査読

    A. Kuzmin, K. Abe, I. Adachi, H. Aihara, D. Anipko, K. Arinstein, V. Aulchenko, T. Aushev, S. Bahinipati, A. M. Bakich, V. Balagura, E. Barberio, M. Barbero, A. Bay, I. Bedny, K. Belous, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, M.-C. Chang, Y. Chao, A. Chen, K.-F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, J. Dalseno, M. Dash, A. Drutskoy, S. Eidelman, D. Epifanov, N. Gabyshev, A. Garmash, T. Gershon, A. Go, G. Gokhroo, B. Golob, H. Ha, J. Haba, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, S. Hou, W.-S. Hou, Y. B. Hsiung, T. Iijima, K. Ikado, A. Imoto, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, J. H. Kang, P. Kapusta, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, Y. J. Kim, K. Kinoshita, P. Krizan, P. Krokovny, R. Kulasiri, R. Kumar, C. C. Kuo, Y.-J. Kwon, S. E. Lee, T. Lesiak, S.-W. Lin, G. Majumder, F. Mandl, T. Matsumoto, S. McOnie, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, Y. Nagasaka, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, P. Pakhlov, G. Pakhlova, H. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, A. Poluektov, H. Sahoo, Y. Sakai, N. Satoyama, T. Schietinger, O. Schneider, J. Schuemann, C. Schwanda, A. J. Schwartz, K. Senyo, M. Shapkin, H. Shibuya, B. Shwartz, V. Sidorov, A. Sokolov, A. Somov, S. Stanic, M. Staric, H. Stoeck, K. Sumisawa, T. Sumiyoshi, S. Y. Suzuki, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, K. Ueno, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. E. Varvell, S. Villa, C. H. Wang, M.-Z. Wang, Y. Watanabe, E. Won, C.-H. Wu, Q. L. Xie, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, L. M. Zhang, Z. P. Zhang, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW D   76 ( 1 )   1 - 11   2007年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the results of a study of neutral B meson decays to the D-0 pi(+)pi(-) final state, where the D-0 is fully reconstructed. The results are obtained from an event sample containing 388x10(6) B (B) over bar -meson pairs collected in the Belle experiment at the KEKB e(+)e(-) collider. The total branching fraction of the three-body decay B((B) over bar (0)-&gt; D-0 pi(+)pi(-))=(8.4 +/- 0.4(stat)+/- 0.8(syst))x10(-4) has been measured. The intermediate resonant structure of these three-body decays has been studied. From a Dalitz plot analysis we have obtained the product of the branching fractions for D-2(*+) and D-0(*+) production: B((B) over bar (0)-&gt; D-2(*+)pi(-))xB(D-2(*+)-&gt; D-0 pi(+))=(2.15 +/- 0.17(stat)+/- 0.29(syst)+/- 0.12(mod))x10(-4), and B((B) over bar (0)-&gt; D-0(*+)pi(-))xB(D-0(*+)-&gt; D-0 pi(+))=(0.60 +/- 0.13(stat)+/- 0.15(syst)+/- 0.22(mod))x10(-4). This is the first observation of the (B) over bar (0)-&gt; D-0(*+)pi(-) decay. The (B) over bar (0)-&gt; D-0 rho(0) and D(0)f(2) branching fractions are measured to be: B((B) over bar (0)-&gt; D-0 rho(0))=(3.19 +/- 0.20(stat)+/- 0.24(syst)+/- 0.38(mod))x10(-4), and B((B) over bar (0)-&gt; D(0)f(2))=(1.20 +/- 0.18(stat)+/- 0.21(syst)+/- 0.32(mod))x10(-4).

    DOI: 10.1103/PhysRevD.76.012006

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  • Measurements of exclusive B-s(0) decays at the Upsilon(5S) resonance 査読

    A. Drutskoy, K. Abe, I. Adachi, H. Aihara, D. Anipko, A. M. Bakich, E. Barberio, I. Bedny, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, M. Bracko, T. E. Browder, M.-C. Chang, P. Chang, Y. Chao, A. Chen, K.-F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, Y. Choi, J. Dalseno, M. Danilov, M. Dash, J. Dragic, S. Eidelman, S. Fratina, N. Gabyshev, B. Golob, H. Ha, J. Haba, T. Hara, H. Hayashii, M. Hazumi, D. Heffernan, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, K. Ikado, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, J. H. Kang, P. Kapusta, H. Kawai, T. Kawasaki, H. J. Kim, H. O. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kulasiri, R. Kumar, C. C. Kuo, A. Kuzmin, Y.-J. Kwon, M. J. Lee, A. Limosani, S.-W. Lin, D. Liventsev, J. MacNaughton, G. Majumder, T. Matsumoto, S. McOnie, W. Mitaroff, K. Miyabayashi, H. Miyata, Y. Miyazaki, G. R. Moloney, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, R. Pestotnik, L. E. Piilonen, Y. Sakai, N. Satoyama, T. Schietinger, O. Schneider, J. Schuemann, A. J. Schwartz, R. Seidl, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, J. B. Singh, A. Somov, N. Soni, S. Stanic, M. Staric, H. Stoeck, K. Sumisawa, T. Sumiyoshi, S. Suzuki, F. Takasaki, K. Tamai, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, I. Tikhomirov, S. Uehara, K. Ueno, Y. Unno, S. Uno, Y. Ushiroda, Y. Usov, G. Varner, S. Villa, A. Vinokurova, C. H. Wang, Y. Watanabe, J. Wicht, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   76 ( 1 )   1 - 9   2007年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    Several exclusive B-s(0) decays are studied using a 1.86 fb(-1) data sample collected at the Upsilon(5S) resonance with the Belle detector at the KEKB asymmetric energy e(+)e(-) collider. In the B-s(0)-&gt; D-s(-)pi(+) decay mode we find 10 B-s(0) candidates and measure the corresponding branching fraction. Combining the B-s(0)-&gt; D-s((*)-)pi(+), B-s(0)-&gt; D-s((*)-)rho(+), B-s(0)-&gt; J/psi phi, and B-s(0)-&gt; J/psi eta decay modes, a significant B-s(0) signal is observed. The ratio sigma(e(+)e(-)-&gt; B-s(*)(B) over bar (*)(s))/sigma(e(+)e(-)-&gt; B-s((*))(B) over bar ((*))(s))=(93(-9)(+7)+/- 1)% is obtained at the Upsilon(5S) energy, indicating that B-s(0) meson production proceeds predominantly through the creation of B-s(*)(B) over bar (*)(s) pairs. The B-s(0) and B-s(*) meson masses are measured to be M(B-s(0))=(5370 +/- 1 +/- 3) MeV/c(2) and M(B-s(*))=(5418 +/- 1 +/- 3) MeV/c(2). Upper limits on the B-s(0)-&gt;gamma gamma, B-s(0)-&gt;phi gamma, B-s(0)-&gt; K+K-, and B-s(0)-&gt; Ds(*)+Ds(*)- branching fractions are also reported.

    DOI: 10.1103/PhysRevD.76.012002

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  • Evidence for CP violation in B-0 -&gt; D+D- decays 査読

    S. Fratina, K. Abe, K. Abe, I. Adachi, H. Aihara, D. Anipko, K. Arinstein, T. Aushev, A. M. Bakich, E. Barberio, A. Bay, K. Belous, U. Bitenc, I. Bizjak, A. Bondar, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, M.-C. Chang, P. Chang, Y. Chao, A. Chen, K.-F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, S. Cole, J. Dalseno, M. Dash, A. Drutskoy, S. Eidelman, A. Go, B. Golob, A. Gorisek, H. Ha, J. Haba, K. Hara, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, W.-S. Hou, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, H. Kaji, J. H. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, H. O. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kulasiri, R. Kumar, C. C. Kuo, A. Kuzmin, Y.-J. Kwon, M. J. Lee, S. E. Lee, T. Lesiak, A. Limosani, S.-W. Lin, D. Liventsev, F. Mandl, T. Matsumoto, A. Matyja, S. McOnie, T. Medvedeva, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, T. Mori, E. Nakano, M. Nakao, H. Nakazawa, S. Nishida, S. Noguchi, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, Y. Sakai, N. Satoyama, T. Schietinger, O. Schneider, J. Schuemann, C. Schwanda, A. J. Schwartz, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, B. Shwartz, J. B. Singh, A. Somov, N. Soni, S. Stanic, M. Staric, H. Stoeck, T. Sumiyoshi, F. Takasaki, K. Tamai, M. Tanaka, Y. Teramoto, X. C. Tian, I. Tikhomirov, K. Trabelsi, T. Tsukamoto, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. E. Varvell, K. Vervink, S. Villa, C. H. Wang, Y. Watanabe, E. Won, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, C. C. Zhang, Z. P. Zhang, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW LETTERS   98 ( 22 )   1 - 6   2007年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report measurements of the branching fraction and CP violation parameters in B-0 -&gt; D+D- decays. The results are based on a data sample that contains 535x10(6) B(B) over bar pairs collected at the Upsilon(4S) resonance, with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We obtain [1.97 +/- 0.20(stat)+/- 0.20(syst)]x10(-4) for the branching fraction of B-0 -&gt; D+D-. The measured values of the CP violation parameters are S=-1.13 +/- 0.37 +/- 0.09, A=0.91 +/- 0.23 +/- 0.06, where the first error is statistical and the second is systematic. We find evidence of CP violation in B-0 -&gt; D+D- at the 4.1 sigma confidence level. While the value of S is consistent with expectations from other measurements, the value of the parameter A favors large direct CP violation at the 3.2 sigma confidence level, in contradiction to standard model expectations.

    DOI: 10.1103/PhysRevLett.98.221802

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  • Measurement of CP asymmetry in a time-dependent Dalitz analysis of B0 -&gt;(rho pi)(0) and a constraint on the quark mixing matrix angle phi(2) 査読

    A. Kusaka, C. C. Wang, H. Ishino, K. Abe, K. Abe, I. Adachi, H. Aihara, D. Anipko, V. Aulchenko, T. Aushev, A. M. Bakich, E. Barberio, A. Bay, I. Bedny, K. Belous, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, M.-C. Chang, P. Chang, Y. Chao, A. Chen, K.-F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, Y. K. Choi, S. Cole, J. Dalseno, M. Danilov, M. Dash, J. Dragic, A. Drutskoy, S. Eidelman, S. Fratina, M. Fujikawa, N. Gabyshev, A. Garmash, T. Gershon, G. Gokhroo, B. Golob, H. Ha, J. Haba, T. Hara, N. C. Hastings, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, S. Hou, W.-S. Hou, Y. B. Hsiung, T. Iijima, K. Ikado, A. Imoto, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, H. Kaji, H. Kakuno, J. H. Kang, P. Kapusta, N. Katayama, H. Kawai, T. Kawasaki, H. R. Khan, H. Kichimi, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kulasiri, R. Kumar, C. C. Kuo, A. Kuzmin, Y.-J. Kwon, J. Lee, M. J. Lee, S. E. Lee, T. Lesiak, A. Limosani, S.-W. Lin, D. Liventsev, F. Mandl, D. Marlow, T. Matsumoto, K. Miyabayashi, H. Miyake, Y. Miyazaki, R. Mizuk, T. Mori, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, S. Ogawa, T. Ohshima, S. Okuno, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Park, K. S. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, A. Poluektov, Y. Sakai, N. Satoyama, O. Schneider, J. Schuemann, A. J. Schwartz, R. Seidl, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, J. B. Singh, A. Somov, N. Soni, S. Stanic, M. Staric, H. Stoeck, S. Y. Suzuki, O. Tajima, F. Takasaki, K. Tamai, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, I. Tikhomirov, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Ushiroda, Y. Usov, G. Varner, S. Villa, C. H. Wang, M.-Z. Wang, Y. Watanabe, R. Wedd, E. Won, Q. L. Xie, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, L. M. Zhang, Z. P. Zhang, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW LETTERS   98 ( 22 )   1 - 6   2007年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present a measurement of CP asymmetry using a time-dependent Dalitz plot analysis of B-0 -&gt;pi(+)pi(-)pi(0) decays based on a 414 fb(-1) data sample containing 449x10(6)B(B) over bar pairs. The data was collected on the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric energy e(+)e(-) collider. Combining our analysis with information on charged B decay modes, we perform a full Dalitz and isospin analysis and obtain a constraint on the CKM angle phi(2), 68 degrees &lt;phi(2)&lt; 95 degrees as the 68.3% confidence interval for the phi(2) solution consistent with the standard model (SM). A large SM-disfavored region also remains.

    DOI: 10.1103/PhysRevLett.98.221602

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  • Observation of B decays to two kaons 査読

    S.-W. Lin, P. Chang, K. Abe, K. Abe, I. Adachi, H. Aihara, D. Anipko, K. Arinstein, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, E. Barberio, A. Bay, I. Bedny, K. Belous, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bracko, Y. Chao, A. Chen, K.-F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, Y. K. Choi, J. Dalseno, M. Dash, J. Dragic, S. Eidelman, S. Fratina, N. Gabyshev, T. Gershon, A. Go, G. Gokhroo, B. Golob, H. Ha, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, Y. Hoshi, S. Hou, W.-S. Hou, Y. B. Hsiung, T. Iijima, K. Ikado, A. Imoto, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, H. Kaji, J. H. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. R. Khan, H. Kichimi, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, R. Kulasiri, C. C. Kuo, Y.-J. Kwon, J. S. Lange, J. Lee, M. J. Lee, S. E. Lee, T. Lesiak, A. Limosani, F. Mandl, T. Matsumoto, S. McOnie, W. Mitaroff, K. Miyabayashi, H. Miyaki, H. Miyata, Y. Miyazaki, R. Mizuk, D. Mohapatra, T. Mori, I. Nakamura, E. Nakano, M. Nakao, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, K. S. Park, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, N. Satoyama, T. Schietinger, O. Schneider, J. Schuemann, A. J. Schwartz, K. Senyo, M. Shapkin, J. B. Singh, A. Sokolov, A. Somov, N. Soni, S. Stanic, M. Staric, H. Stoeck, T. Sumiyoshi, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, I. Tikhomirov, K. Trabelsi, T. Tsukamoto, S. Uehara, T. Uglov, K. Ueno, Y. Unno, S. Uno, Y. Usov, G. Varner, S. Villa, C. C. Wang, C. H. Wang, M.-Z. Wang, Y. Watanabe, E. Won, Q. L. Xie, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, C. C. Zhang, L. M. Zhang, Z. P. Zhang, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW LETTERS   98 ( 18 )   1 - 6   2007年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    Using 449x10(6) B(B) over bar pairs collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider, we observe clear signals for B+-&gt;(K) over bar K-0(+) and B-0 -&gt;(K) over bar K-0(0) decays with 5.3 sigma and 6.0 sigma significance, respectively. We measure the branching fractions B(B+-&gt;(K) over bar K-0(+))=(1.22(-0.28-0.16)(+0.32+0.13))x10(-6) and B(B-0 -&gt;(K) over bar K-0(0))=(0.87(-0.20)(+0.25)+/- 0.09)x10(-6), and partial-rate asymmetries A(CP)(B+-&gt;(K) over bar K-0(+))=0.13(-0.24)(+0.23)+/- 0.02 and A(CP)(B-0 -&gt;(K) over bar K-0(0))=-0.58(-0.66)(+0.73)+/- 0.04. From a simultaneous fit, we also obtain B(B+-&gt; K-0 pi(+))=(22.8(-0.7)(+0.8)+/- 1.3)x10(-6) and A(CP)(B+-&gt; K-0 pi(+))=0.03 +/- 0.03 +/- 0.01. The first and second error in the branching fractions and the partial-rate asymmetries are statistical and systematic, respectively. No signal is observed for B-0 -&gt; K+K- decays, and for this branching fraction, we set an upper limit of 4.1x10(-7) at the 90% confidence level.

    DOI: 10.1103/PhysRevLett.98.181804

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  • Improved measurement of (B)over-bar(0) -> D-s(-) D+ and search for (B)over-bar(0) -> D-s(+) D-s(-) at Belle 査読

    A. Zupanc, K. Abe, K. Abe, H. Aihara, D. Anipko, K. Arinstein, V. Aulchenko, T. Aushev, S. Bahinipati, A. M. Bakich, E. Barberio, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, M.-C. Chang, P. Chang, Y. Chao, K.-F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, Y. K. Choi, J. Dalseno, M. Dash, A. Drutskoy, S. Eidelman, S. Fratina, N. Gabyshev, A. Go, B. Golob, H. Ha, J. Haba, T. Hara, H. Hayashii, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, T. Iijima, K. Ikado, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, Y. Iwasaki, H. Kaji, P. Kapusta, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kulasiri, R. Kumar, Y.-J. Kwon, M. J. Lee, T. Lesiak, A. Limosani, S.-W. Lin, D. Liventsev, G. Majumder, F. Mandl, T. Matsumoto, S. McOnie, T. Medvedeva, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, R. Pestotnik, L. E. Piilonen, Y. Sakai, N. Satoyama, T. Schietinger, O. Schneider, C. Schwanda, R. Seidl, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, B. Shwartz, J. B. Singh, A. Somov, N. Soni, S. Stanic, M. Staric, H. Stoeck, K. Sumisawa, T. Sumiyoshi, S. Suzuki, F. Takasaki, K. Tamai, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, I. Tikhomirov, K. Trabelsi, T. Tsukamoto, S. Uehara, K. Ueno, S. Uno, Y. Ushiroda, Y. Usov, G. Varner, S. Villa, C. H. Wang, Y. Watanabe, E. Won, Q. L. Xie, A. Yamaguchi, Y. Yamashita, M. Yamauchi, Y. Yusa, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov

    PHYSICAL REVIEW D   75 ( 9 )   1 - 7   2007年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We reconstruct (B) over bar (0)-> Ds-D+ decays using a sample of 449x10(6) B (B) over bar pairs recorded by the Belle experiment, and measure the branching fraction to be B((B) over bar (0)-> Ds-D+)=[7.5 +/- 0.2(stat)+/- 0.8(syst)+/- 0.8(B(')s)]x10(-3). A search for the related decay (B) over bar (0)-> Ds+Ds- is also performed. Since we observe no statistically significant signal, an upper limit on the branching fraction is set at 3.6x10(-5) (90% C.L.).

    DOI: 10.1103/PhysRevD.75.091102

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  • Evidence for D-0-(D)over-bar(0) mixing 査読

    M. Staric, B. Golob, K. Abe, K. Abe, I. Adachi, H. Aihara, K. Arinstein, T. Aushev, T. Aziz, S. Bahinipati, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, K. Belous, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, P. Chang, Y. Chao, A. Chen, K.-F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, I.-S. Cho, S.-K. Choi, Y. Choi, S. Cole, J. Dalseno, M. Danilov, M. Dash, J. Dragic, A. Drutskoy, S. Eidelman, D. Epifanov, S. Fratina, N. Gabyshev, A. Garmash, A. Gorisek, H. Ha, J. Haba, T. Hara, N. C. Hastings, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, T. Higuchi, T. Hokuue, Y. Hoshi, W.-S. Hou, T. Iijima, K. Ikado, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, H. Kaji, P. Kapusta, N. Katayama, T. Kawasaki, A. Kibayashi, H. Kichimi, S. K. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kumar, C. C. Kuo, A. Kuzmin, Y.-J. Kwon, J. S. Lange, M. J. Lee, S. E. Lee, T. Lesiak, J. Li, A. Limosani, S.-W. Lin, D. Liventsev, F. Mandl, D. Marlow, T. Matsumoto, A. Matyja, S. McOnie, T. Medvedeva, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, D. Mohapatra, Y. Nagasaka, I. Nakamura, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, S. Okuno, S. L. Olsen, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Palka, R. Pestotnik, L. E. Piilonen, A. Poluektov, M. Rozanska, H. Sahoo, Y. Sakai, N. Satoyama, O. Schneider, J. Schu R. Mann, C. Schwanda, A. J. Schwartz, R. Seidl, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, H. Shibuya, B. Shwartz, A. Sokolov, A. Somov, S. Stanic, H. Stoeck, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, O. Tajima, F. Takasaki, K. Tamai, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, I. Tikhomirov, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Ushiroda, Y. Usov, G. Varner, K. E. Varvell, K. Vervink, S. Villa, A. Vinokurova, C. H. Wang, M.-Z. Wang, Y. Watanabe, J. Wicht, E. Won, Q. L. Xie, B. D. Yabsley, A. Yamaguchi, H. Yamamoto, Y. Yamashita, M. Yamauchi, C. Z. Yuan, Y. Yuan, C. C. Zhang, L. M. Zhang, Z. P. Zhang, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW LETTERS   98 ( 21 )   1 - 6   2007年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We observe evidence for D-0-(D) over bar (0) mixing by measuring the difference in the apparent lifetime when a D-0 meson decays to the CP eigenstates K+K- and pi(+)pi(-) and when it decays to the final state K-pi(+). We find the relative difference of the lifetimes y(CP) to be [1.31 +/- 0.32(stat)+/- 0.25(syst)]%, 3.2 standard deviations from zero. We also search for a CP asymmetry between D-0 and (D) over bar (0) decays; no evidence for CP violation is found. These results are based on 540 fb(-1) of data recorded by the Belle detector at the KEKB e(+)e(-) collider.

    DOI: 10.1103/PhysRevLett.98.211803

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  • Observation of direct CP violation in B-0 -&gt;pi(+)pi(-) decays and model-independent constraints on the quark-mixing angle phi(2) 査読

    H. Ishino, K. Abe, K. Abe, I. Adachi, H. Aihara, D. Anipko, K. Arinstein, T. Aushev, A. M. Bakich, E. Barberio, M. Barbero, I. Bedny, U. Bitenc, I. Bizjak, S. Blyth, A. Bozek, M. Bracko, T. E. Browder, M.-C. Chang, P. Chang, Y. Chao, A. Chen, K.-F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, S. Cole, J. Dalseno, M. Dash, A. Drutskoy, S. Eidelman, S. Fratina, T. Gershon, A. Go, G. Gokhroo, B. Golob, A. Gorisek, H. Ha, J. Haba, K. Hara, K. Hayasaka, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, S. Hou, Y. B. Hsiung, T. Iijima, A. Imoto, K. Inami, A. Ishikawa, Y. Iwasaki, J. H. Kang, P. Kapusta, S. U. Kataoka, N. Katayama, H. Kawai, T. Kawasaki, H. R. Khan, A. Kibayashi, H. Kichimi, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kulasiri, R. Kumar, C. C. Kuo, A. Kusaka, A. Kuzmin, Y.-J. Kwon, M. J. Lee, S. E. Lee, T. Lesiak, A. Limosani, S.-W. Lin, J. MacNaughton, F. Mandl, D. Marlow, T. Matsumoto, A. Matyja, S. McOnie, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, D. Mohapatra, Y. Nagasaka, E. Nakano, M. Nakao, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. L. Olsen, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, N. Satoyama, T. Schietinger, O. Schneider, J. Schuemann, C. Schwanda, A. J. Schwartz, R. Seidl, K. Senyo, M. E. Sevior, H. Shibuya, B. Shwartz, A. Somov, N. Soni, S. Stanic, M. Staric, H. Stoeck, K. Sumisawa, T. Sumiyoshi, S. Y. Suzuki, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, Y. Teramoto, X. C. Tian, K. Trabelsi, T. Tsukamoto, S. Uehara, K. Ueno, Y. Unno, S. Uno, P. Urquijo, Y. Ushiroda, Y. Usov, G. Varner, K. E. Varvell, S. Villa, C. H. Wang, M.-Z. Wang, Y. Watanabe, E. Won, C.-H. Wu, Q. L. Xie, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, L. M. Zhang, Z. P. Zhang, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW LETTERS   98 ( 21 )   1 - 6   2007年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a new measurement of the time-dependent CP-violating parameters in B-0 -&gt;pi(+)pi(-) decays with 535x10(6) B (B) over bar pairs collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider operating at the Upsilon(4S) resonance. We find 1464 +/- 65 B-0 -&gt;pi(+)pi(-) events and measure the CP-violating parameters S-pi pi=-0.61 +/- 0.10(stat)+/- 0.04(syst) and A(pi pi)=+0.55 +/- 0.08(stat)+/- 0.05(syst). We observe large direct CP violation with a significance greater than 5 standard deviations for any S-pi pi value. Using isospin relations, we measure the Cabibbo-Kobayashi-Maskawa quark-mixing matrix angle phi(2)=(97 +/- 11)degrees for the solution consistent with the standard model and exclude the range 11 degrees &lt;phi(2)&lt; 79 degrees at the 95% confidence level.

    DOI: 10.1103/PhysRevLett.98.211801

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  • Measurement of charmless B decays to eta K-* and eta rho 査読

    C. H. Wang, K. Abe, I. Adachi, H. Aihara, D. Anipko, T. Aushev, A. M. Bakich, E. Barberio, A. Bay, K. Belous, U. Bitenc, S. Blyth, A. Bondar, A. Bozek, M. Bracko, P. Chang, Y. Chao, A. Chen, W. T. Chen, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, S. Cole, J. Dalseno, A. Drutskoy, S. Eidelman, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, G. Gokhroo, B. Golob, H. Ha, J. Haba, T. Hara, K. Hayasaka, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, W.-S. Hou, T. Iijima, K. Ikado, A. Imoto, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, H. Kaji, J. H. Kang, P. Kapusta, N. Katayama, H. R. Khan, H. Kichimi, Y. J. Kim, K. Kinoshita, R. Kulasiri, R. Kumar, C. C. Kuo, Y.-J. Kwon, G. Leder, M. J. Lee, S. E. Lee, T. Lesiak, S.-W. Lin, D. Liventsev, J. MacNaughton, T. Matsumoto, A. Matyja, S. McOnie, H. Miyake, H. Miyata, R. Mizuk, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Park, K. S. Park, R. Pestotnik, L. E. Piilonen, Y. Sakai, N. Satoyama, O. Schneider, J. Schumann, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, J. B. Singh, A. Sokolov, A. Somov, N. Soni, S. Stanic, M. Staric, H. Stoeck, S. Y. Suzuki, K. Tamai, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, I. Tikhomirov, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, K. Ueno, P. Urquijo, Y. Usov, G. Varner, S. Villa, M.-Z. Wang, Y. Watanabe, E. Won, Q. L. Xie, A. Yamaguchi, Y. Yamashita, C. C. Zhang, Z. P. Zhang, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW D   75 ( 9 )   1 - 10   2007年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report measurements of branching fractions and CP asymmetries for B -&gt;eta K-* and B -&gt;eta rho decays. These results are obtained from a 414 fb(-1) data sample collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We measure the following branching fractions: B(B-0 -&gt;eta K-*0)=(15.2 +/- 1.2 +/- 1.0)x10(-6) and B(B+-&gt;eta K*+)=(19.3(-1.9)(+2.0)+/- 1.5)x10(-6), where the first error is statistical and the second systematic. We also find a 2.7 sigma excess in the B+-&gt;eta rho(+) mode and measure B(B+-&gt;eta rho(+))=(4.1(-1.3)(+1.4)+/- 0.4)x10(-6)&lt; 6.5x10(-6) at 90% confidence level. For B-0 -&gt;eta rho(0) decays, we determine the upper limit B(B-0 -&gt;eta rho(0))&lt; 1.9x10(-6) at 90% confidence level. The partial rate asymmetries are A(CP)(eta K-*0)=0.17 +/- 0.08 +/- 0.01, A(CP)(eta K*+)=0.03 +/- 0.10 +/- 0.01, and A(CP)(eta rho(+))=-0.04(-0.32)(+0.34)+/- 0.01.

    DOI: 10.1103/PhysRevD.75.092005

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  • Improved measurements of branching fractions and CP asymmetries in B -&gt; eta h decays 査読

    P. Chang, K. Abe, I. Adachi, H. Aihara, D. Anipko, A. M. Bakich, E. Barberio, A. Bay, U. Bitenc, I. Bizjak, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, Y. Chao, A. Chen, K.-F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, Y. K. Choi, S. Cole, J. Dalseno, M. Dash, J. Dragic, S. Eidelman, S. Fratina, N. Gabyshev, A. Go, A. Gorisek, H. Ha, J. Haba, K. Hara, H. Hayashii, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, S. Hou, W.-S. Hou, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, H. Kaji, J. H. Kang, S. U. Kataoka, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krokovny, R. Kumar, C. C. Kuo, A. Kuzmin, Y.-J. Kwon, M. J. Lee, S. E. Lee, T. Lesiak, S.-W. Lin, F. Mandl, T. Matsumoto, S. McOnie, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, T. Mori, Y. Nagasaka, M. Nakao, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, Y. Sakai, N. Satoyama, T. Schietinger, O. Schneider, J. Schuemann, C. Schwanda, A. J. Schwartz, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, B. Shwartz, J. B. Singh, A. Somov, N. Soni, S. Stanic, M. Staric, H. Stoeck, T. Sumiyoshi, F. Takasaki, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, I. Tikhomirov, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, K. Ueno, Y. Unno, S. Uno, Y. Usov, G. Varner, K. E. Varvell, S. Villa, C. C. Wang, C. H. Wang, M.-Z. Wang, M. Watanabe, Y. Watanabe, R. Wedd, J. Wicht, E. Won, A. Yamaguchi, Y. Yamashita, M. Yamauchi, C. C. Zhang, Z. P. Zhang, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW D   75 ( 7 )   1 - 7   2007年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMERICAN PHYSICAL SOC  

    We report improved measurements of B decays with an eta meson in the final state using 492 fb(-1) of data collected by the Belle detector at the KEKB e(+)e(-) collider. We observe the decays B-+/--&gt;eta pi(+/-) and B-+/--&gt;eta K-+/- and measure the branching fractions B(B-+/--&gt;eta pi(+/-))=(4.2 +/- 0.4(stat)+/- 0.2(sys))x10(-6) and B(B-+/--&gt;eta K-+/-)=(1.9 +/- 0.3(stat)(-0.1)(+0.2)(sys))x10(-6). The corresponding CP-violating asymmetries are measured to be -0.23 +/- 0.09(stat)+/- 0.02(sys) for eta pi(+/-) and -0.39 +/- 0.16(stat)+/- 0.03(sys) for eta K-+/-. We also search for B-0 -&gt;eta K-0 decays and set an upper limit of 1.9x10(-6) at the 90% confidence level.

    DOI: 10.1103/PhysRevD.75.071104

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  • Observation of the decay B-0 -&gt; J/psi eta 査読

    M. -C. Chang, K. Abe, K. Abe, I. Adachi, H. Aihara, D. Anipko, K. Arinstein, T. Aushev, A. M. Bakich, E. Barberio, A. Bay, I. Bedny, K. Belous, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, T. E. Browder, P. Chang, Y. Chao, A. Chen, K. -F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, S. -K. Choi, Y. Choi, Y. K. Choi, S. Cole, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, S. Fratina, N. Gabyshev, T. Gershon, A. Go, G. Gokhroo, H. Ha, J. Haba, T. Hara, K. Hayasaka, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, S. Hou, W. -S. Hou, Y. B. Hsiung, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, H. Kaji, J. H. Kang, S. U. Kataoka, H. Kawai, T. Kawasaki, H. R. Khan, H. Kichimi, S. K. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kulasiri, R. Kumar, C. C. Kuo, A. Kuzmin, Y. -J. Kwon, G. Leder, M. J. Lee, S. E. Lee, T. Lesiak, A. Limosani, S. -W. Lin, G. Majumder, F. Mandl, T. Matsumoto, A. Matyja, S. McOnie, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, T. Mori, T. Nagamine, I. Nakamura, E. Nakano, M. Nakao, S. Nishida, O. Nitoh, S. Noguchi, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Palka, H. Park, K. S. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, Y. Sakai, N. Satoyama, T. Schietinger, O. Schneider, J. Schumann, A. J. Schwartz, R. Seidl, K. Senyo, M. Shapkin, H. Shibuya, B. Shwartz, J. B. Singh, A. Somov, N. Soni, S. Stanic, M. Staric, H. Stoeck, K. Sumisawa, T. Sumiyoshi, S. Suzuki, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, I. Tikhomirov, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, S. Uno, P. Urquijo, Y. Ushiroda, Y. Usov, G. Varner, K. E. Varvell, S. Villa, C. C. Wang, C. H. Wang, M. -Z. Wang, Y. Watanabe, R. Wedd, E. Won, Q. L. Xie, A. Yamaguchi, Y. Yamashita, M. Yamauchi, Y. Yusa, C. C. Zhang, L. M. Zhang, Z. P. Zhang, A. Zupanc

    PHYSICAL REVIEW LETTERS   98 ( 13 )   1 - 5   2007年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the first observation of B-0 -&gt; J/psi eta decay. These results are obtained from a data sample that contains 449x10(6) B (B) over bar pairs accumulated at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We observe a signal with a significance of 8.1 sigma and obtain a branching fraction of (9.5 +/- 1.7(stat)+/- 0.8(syst))x10(-6).

    DOI: 10.1103/PhysRevLett.98.131803

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  • Search for invisible decay of the Upsilon(1S) 査読

    O. Tajima, H. Hayashii, M. Hazumi, K. Inami, Y. Iwasaki, S. Uehara, K. Abe, I. Adachi, H. Aihara, D. Anipko, V. Aulchenko, A. M. Bakich, E. Barberio, I. Bedny, K. Belous, U. Bitenc, I. Bizjak, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, M. -C. Chang, A. Chen, K. -F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, S. Cole, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, S. Fratina, N. Gabyshev, T. Gershon, A. Go, G. Gokhroo, H. Ha, J. Haba, K. Hayasaka, D. Heffernan, T. Hokuue, Y. Hoshi, S. Hou, W. -S. Hou, T. Iijima, K. Ikado, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, J. H. Kang, S. U. Kataoka, N. Katayama, H. Kawai, T. Kawasaki, H. R. Khan, H. Kichimi, H. J. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kumar, C. C. Kuo, A. Kuzmin, Y. -J. Kwon, J. S. Lange, J. Lee, M. J. Lee, T. Lesiak, A. Limosani, S. -W. Lin, D. Liventsev, G. Majumder, F. Mandl, T. Matsumoto, S. McOnie, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, T. Mori, J. Mueller, I. Nakamura, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Park, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, N. Satoyama, T. Schietinger, O. Schneider, J. Schumann, A. J. Schwartz, R. Seidl, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, B. Shwartz, J. B. Singh, A. Sokolov, A. Somov, N. Soni, S. Stanic, M. Staric, H. Stoeck, K. Sumisawa, T. Sumiyoshi, S. Suzuki, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, I. Tikhomirov, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, T. Uglov, S. Uno, P. Urquijo, Y. Ushiroda, Y. Usov, G. Varner, S. Villa, C. C. Wang, C. H. Wang, M. -Z. Wang, Y. Watanabe, R. Wedd, J. Wicht, E. Won, Q. L. Xie, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, Z. P. Zhang, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW LETTERS   98 ( 13 )   1 - 6   2007年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMERICAN PHYSICAL SOC  

    We report results of a search for the invisible decay of the Upsilon(1S) via the Upsilon(3S)-&gt;pi(+)pi(-)Upsilon(1S) transition using a data sample of 2.9 fb(-1) at the Upsilon(3S) resonance. The data were collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. No signal is found, and an upper limit for the branching fraction at the 90% confidence level is determined to be B(Upsilon(1S)-&gt; invisible)&lt; 2.5x10(-3).

    DOI: 10.1103/PhysRevLett.98.132001

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  • Dalitz analysis of three-body charmless B-0 -&gt; K-0 pi(+) pi(-) decay 査読

    A. Garmash, K. Abe, I. Adachi, H. Aihara, D. Anipko, K. Arinstein, V. Aulchenko, T. Aushev, S. Bahinipati, A. M. Bakich, V. Balagura, E. Barberio, M. Barbero, A. Bay, I. Bedny, K. Belous, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, M. -C. Chang, Y. Chao, A. Chen, K. -F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, S. Cole, J. Dalseno, M. Dash, J. Dragic, A. Drutskoy, S. Eidelman, D. Epifanov, N. Gabyshev, T. Gershon, A. Go, G. Gokhroo, B. Golob, H. Ha, J. Haba, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, S. Hou, W. -S. Hou, Y. B. Hsiung, T. Iijima, K. Ikado, A. Imoto, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, J. H. Kang, P. Kapusta, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, Y. J. Kim, K. Kinoshita, P. Krizan, P. Krokovny, R. Kulasiri, R. Kumar, C. C. Kuo, A. Kuzmin, Y. -J. Kwon, S. E. Lee, T. Lesiak, J. Li, S. -W. Lin, Y. Liu, G. Majumder, F. Mandl, T. Matsumoto, S. McOnie, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, D. Mohapatra, G. R. Moloney, Y. Nagasaka, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, P. Pakhlov, G. Pakhlova, H. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, A. Poluektov, H. Sahoo, Y. Sakai, N. Satoyama, T. Schietinger, O. Schneider, J. Schumann, C. Schwanda, A. J. Schwartz, K. Senyo, M. Shapkin, H. Shibuya, B. Shwartz, V. Sidorov, A. Sokolov, A. Somov, S. Stanic, M. Staric, H. Stoeck, K. Sumisawa, T. Sumiyoshi, S. Y. Suzuki, F. Takasaki, K. Tamai, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, K. Trabelsi, T. Tsukamoto, S. Uehara, T. Uglov, K. Ueno, Y. Unno, S. Uno, P. Urquijo, Y. Ushiroda, Y. Usov, G. Varner, K. E. Varvell, S. Villa, C. H. Wang, M. -Z. Wang, Y. Watanabe, E. Won, C. -H. Wu, Q. L. Xie, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, C. C. Zhang, L. M. Zhang, Z. P. Zhang, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW D   75 ( 1 )   1 - 10   2007年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report results of a Dalitz plot analysis of the three-body charmless B-0 -&gt; K-0 pi(+)pi(-) decay. The analysis is performed with a data sample that contains 388x10(6) BB pairs collected near the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. Measurements of branching fractions for the quasi-two-body decays B-0 -&gt;rho(770)K-0(0), B-0 -&gt; f(0)(980)K-0, B-0 -&gt; K-*(892)(+)pi(-), B-0 -&gt; K-*(1430)(+)pi(-), and upper limits on several other quasi-two-body decay modes are reported.

    DOI: 10.1103/PhysRevD.75.012006

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  • Search for B+-&gt; J/psi eta ' K+ and B-0 -&gt; J/psi eta ' K-S(0) decays 査読

    Q. L. Xie, K. Abe, I. Adachi, H. Aihara, D. Anipko, K. Arinstein, V. Aulchenko, T. Aushev, T. Aziz, S. Bahinipati, A. M. Bakich, V. Balagura, E. Barberio, M. Barbero, A. Bay, I. Bedny, K. Belous, U. Bitenc, I. Bizjak, S. Blyth, A. Bozek, M. Bracko, T. E. Browder, M. -C. Chang, Y. Chao, A. Chen, K. -F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, S. Cole, J. Dalseno, M. Dash, A. Drutskoy, S. Eidelman, D. Epifanov, N. Gabyshev, T. Gershon, A. Go, G. Gokhroo, H. Ha, J. Haba, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, S. Hou, W. -S. Hou, T. Iijima, K. Ikado, A. Imoto, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, J. H. Kang, P. Kapusta, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, Y. J. Kim, S. Korpar, P. Krizan, P. Krokovny, R. Kulasiri, R. Kumar, C. C. Kuo, A. Kuzmin, Y. -J. Kwon, S. E. Lee, T. Lesiak, S. -W. Lin, Y. Liu, G. Majumder, F. Mandl, T. Matsumoto, S. McOnie, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, J. Mueller, Y. Nagasaka, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, A. Poluektov, H. Sahoo, Y. Sakai, N. Satoyama, T. Schietinger, O. Schneider, J. Schumann, K. Senyo, M. Shapkin, H. Shibuya, B. Shwartz, V. Sidorov, A. Sokolov, A. Somov, S. Stanic, M. Staric, H. Stoeck, K. Sumisawa, T. Sumiyoshi, S. Y. Suzuki, F. Takasaki, K. Tamai, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, C. H. Wang, M. -Z. Wang, Y. Watanabe, R. Wedd, E. Won, A. Yamaguchi, Y. Yamashita, M. Yamauchi, C. C. Zhang, L. M. Zhang, Z. P. Zhang, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW D   75 ( 1 )   1 - 6   2007年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMERICAN PHYSICAL SOC  

    We report the results of searches for B+ -&gt; J/psi eta'K+ and B-0 -&gt; J/psi eta'K-s(0) decays, using a sample of 388 X 10(6) B (B) over bar B pairs collected with the Belle detector at the Y(4S) resonance. No statistically significant signal is found for either of the two decay modes and upper limits for the branching fractions are determined to be B(B+ -&gt; J/psi eta K-'(+)) &lt; 8: 8 x 10(-5) and B(B-0 -&gt; J/psi eta'K-S(0)) &lt; 2.5 x 10(-5) at 90% confidence level.

    DOI: 10.1103/PhysRevD.75.017101

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  • Observation of time-dependent CP violation in B-0 -&gt;eta K-'(0) decays and improved measurements of CP asymmetries in B-0 -&gt;phi K-0, (KSKSKS0)-K-0-K-0 and B-0 -&gt; J/psi K-0 decays 査読

    K. -F. Chen, K. Hara, M. Hazumi, T. Higuchi, K. Miyabayashi, Y. Nakahama, K. Sumisawa, O. Tajima, Y. Ushiroda, Y. Yusa, K. Abe, K. Abe, I. Adachi, H. Aihara, D. Anipko, K. Arinstein, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, V. Balagura, S. Banerjee, E. Barberio, M. Barbero, A. Bay, K. Belous, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, P. Chang, Y. Chao, A. Chen, W. T. Chen, B. G. Cheon, R. Chistov, S. -K. Choi, Y. Choi, Y. K. Choi, A. Chuvikov, S. Cole, J. Dalseno, M. Danilov, M. Dash, J. Dragic, A. Drutskoy, S. Eidelman, D. Epifanov, S. Fratina, A. Garmash, T. Gershon, A. Go, G. Gokhroo, P. Goldenzweig, B. Golob, H. Ha, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, D. Heffernan, T. Hokuue, Y. Hoshi, S. Hou, W. -S. Hou, Y. B. Hsiung, T. Iijima, K. Ikado, A. Imoto, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, H. Kakuno, J. H. Kang, S. U. Kataoka, N. Katayama, H. Kawai, T. Kawasaki, H. R. Khan, H. Kichimi, H. J. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kulasiri, R. Kumar, C. C. Kuo, A. Kusaka, A. Kuzmin, Y. -J. Kwon, G. Leder, J. Lee, M. J. Lee, T. Lesiak, J. Li, A. Limosani, S. -W. Lin, Y. Liu, D. Liventsev, G. Majumder, F. Mandl, T. Matsumoto, A. Matyja, W. Mitaroff, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, D. Mohapatra, G. R. Moloney, A. Murakami, T. Nagamine, Y. Nagasaka, I. Nakamura, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, W. Ostrowicz, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Palka, H. Park, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, N. Satoyama, T. Schietinger, O. Schneider, J. Schumann, A. J. Schwartz, R. Seidl, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, B. Shwartz, J. B. Singh, A. Sokolov, A. Somov, S. Stanic, M. Staric, H. Stoeck, T. Sumiyoshi, S. Suzuki, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, K. Ueno, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. E. Varvell, S. Villa, C. C. Wang, C. H. Wang, M. -Z. Wang, Y. Watanabe, R. Wedd, E. Won, Q. L. Xie, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, C. C. Zhang, Z. P. Zhang, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW LETTERS   98 ( 3 )   1 - 6   2007年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMERICAN PHYSICAL SOC  

    We present improved measurements of CP-violation parameters in B-0 -&gt; phi K-0, eta K-'(0), (KSKSKS0)-K-0-K-0 decays based on a sample of 535 x 10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. We obtain sin2 phi(eff)(1) = +0.64 +/- 0.10(stat) +/- 0.04(syst) for B-0 -&gt; eta K-'(0), +0.50 +/- 0.21(stat) +/- 0.06(syst) for B-0 -&gt;phi K-0, and +0.30 +/- 0.32(stat) +/- 0.08(syst) for B-0 -&gt; (KSKSKS0)-K-0-K-0 decays. We have observed CP violation in the B-0 -&gt; eta K-'(0) decay with a significance of 5.6 standard deviations. We also perform an improved measurement of CP asymmetries in B-0 -&gt; J/psi K-0 decays and obtain sin2 phi(1) = +0.642 +/- 0.031(stat) +/- 0.017(syst).

    DOI: 10.1103/PhysRevLett.98.031802

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  • Monolithic pixel detector in a 0.15μm SOI technology 査読

    Y. Arai, M. Hazumi, Y. Ikegami, T. Kohriki, O. Tajima, S. Terada, T. Tsuboyama, Y. Unno, H. Ushiroda, H. Ikeda, K. Hara, H. Ishino, T. Kawasaki, E. Martin, G. Varner, H. Tajima, M. Ohno, K. Fukuda, H. Komatsubara, J. Ida, H. Hayashi

    IEEE Nuclear Science Symposium Conference Record   3   1440 - 1444   2007年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)  

    We describe a new pixel detector development project using a 0.15 μm fully-depleted CMOS SOI (Silicon-On-Insulator) technology. Additional processing steps for creating substrate implants and contacts to form sensor and electrode connections were developed for this SOI process. A diode Test Element Group and several test chips have been fabricated and evaluated. The pixel detectors are successfully operated and first images are taken and sensibility to β-rays is confirmed. Back gate effects on the top circuits are observed and discussed. © 2006 IEEE.

    DOI: 10.1109/NSSMIC.2006.354171

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  • Total dose effects on 0.15 mu m FD-SOI CMOS transistors 査読

    Y. Ikegami, Y. Arai, K. Hara, A. Hazurni, H. Ikeda, H. Ishino, T. Kohriki, H. Miyake, A. Mochizuki, S. Terada, T. Tsuboyama, Y. Unno

    2007 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD, VOLS 1-11   2173 - +   2007年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:IEEE  

    The silicon-on-insulator (SOI) CMOS technology has a number of advantages over the standard bulk CMOS technology such as negligible latch-up probability, high speed and low power dissipation. The fully depleted SOI (FD-SOI) CMOS technology provided by OKI Electric Industry Co., Ltd. is realizing the full features of the advantages. Although the total dose response of SOI devices is more complex due to the presence of the buried oxide, high radiation tolerance is expected for a very thin silicon layer. We investigated the total dose effects on transistors fabricated using the OKI 0.15 mu m FD-SOI CMOS process. Assuming a radiation environment at the super LHC experiment, we have irradiated with 70 MeV protons three chips each to 6.4 x10(13,) 5.8x10(14), and 5.5x10(15) n(eq)/cm(2). In this paper we report the latest results in comparison with the data taken in a 2006 exposure test.

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  • SOI pixel developments in a 0.15 mu m technology 査読

    Y. Arai, Y. Ikegami, Y. Unno, T. Tsuboyama, S. Terada, M. Hazumi, T. Kohriki, H. Ikeda, K. Hara, H. Miyake, H. Ishino, G. Varner, E. Martin, H. Tajima, M. Ohno, K. Fukuda, H. Komatsubara, J. Ida, H. Hayashi, Y. Kawai

    2007 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD, VOLS 1-11   1040 - 1046   2007年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:IEEE  

    While the SOI (Silicon-On-Insulator) device concept is very old, commercialization of the technology is relatively new and growing rapidly in high-speed processor and low-power applications. Furthermore, features such as latch-up immunity, radiation hardness and high-temperature operation are very attractive in high energy and space applications.
    Once high-quality bonded SOI wafers became available in the late 90s, it opened up the possibility to get two different kinds of Si on a single wafer. This makes it possible to realize an ideal pixel detector; pairing a fully-depleted radiation sensor with CMOS circuitry in an industrial technology.
    In 2005 we started Si pixel R&D with OKI Electric Ind. Co., Ltd. which is the first market supplier of Fully-Depleted SOI products. We have developed processes for p+/n+ implants to the substrate and for making connections between the implants and circuits in the OKI 0.15mm FD-SOI CMOS process.
    We have preformed two Multi Project Wafer (MPW) runs using this SOI process. We hosted the second NOW run and invited foreign universities and laboratories to join this MPW run in addition to Japanese universities and laboratories.
    Features of these SOI devices and experiences with SOI pixel development are presented.

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  • New Measurements Using External Photon Conversion at a High Luminosity B Factory

    H. Ishino, M. Hazumi, M. Nakao, T. Yoshikawa

    arXiv:hep-ex   0703039   1 - 4   2007年

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    記述言語:英語  

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  • Total dose effects on 0.15μm FD-SOI CMOS transistors 査読

    Y. Ikegami, Y. Arai, K. Hara, M. Hazumi, H. Ikeda, H. Ishino, T. Kohriki, H. Miyake, A. Mochizuki, S. Terada, T. Tsuboyama, Y. Unno

    IEEE Nuclear Science Symposium Conference Record   3   2173 - 2177   2007年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)  

    The silicon-on-insulator (SOI) CMOS technology has a number of advantages over the standard bulk CMOS technology such as negligible latch-up probability, high speed and low power dissipation. The fully depleted SOI (FD-SOI) CMOS technology provided by OKI Electric Industry Co., Ltd. is realizing the full features of the advantages. Although the total dose response of SOI devices is more complex due to the presence of the buried oxide, high radiation tolerance is expected for a very thin silicon layer. We investigated the total dose effects on transistors fabricated using the OKI 0.15μm FD-SOI CMOS process. Assuming a radiation environment at the super LHC experiment, we have irradiated with 70 MeV protons three chips each to 6.4×1013, 5.8×1014, and 5.5×1015 neq/cm 2. In this paper we report the latest results in comparison with the data taken in a 2006 exposure test. © 2007 IEEE.

    DOI: 10.1109/NSSMIC.2007.4436582

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  • SOI pixel developments in a 0.15μm technology 査読

    Y. Arai, Y. Ikegami, Y. Unno, T. Tsuboyama, S. Terada, M. Hazumi, T. Kohriki, H. Ikeda, K. Hara, H. Miyake, H. Ishino, G. Varner, E. Martin, H. Tajima, M. Ohno, K. Fukuda, H. Komatsubara, J. Ida, H. Hayashi, Y. Kawai

    IEEE Nuclear Science Symposium Conference Record   2   1040 - 1046   2007年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)  

    While the SOI (Silicon-On-Insulator) device concept is very old, commercialization of the technology is relatively new and growing rapidly in high-speed processor and low-power applications. Furthermore, features such as latch-up immunity, radiation hardness and high-temperature operation are very attractive in high energy and space applications. Once high-quality bonded SOI wafers became available in the late 90s, it opened up the possibility to get two different kinds of Si on a single wafer. This makes it possible to realize an ideal pixel detector
    pairing a fully-depleted radiation sensor with CMOS circuitry in an industrial technology. In 2005 we started Si pixel R&amp
    D with OKI Electric Ind. Co., Ltd. which is the first market supplier of Fully-Depleted SOI products. We have developed processes for p+/n+ implants to the substrate and for making connections between the implants and circuits in the OKI 0.15mm FD-SOI CMOS process. We have preformed two Multi Project Wafer (MPW) runs using this SOI process. We hosted the second MPW run and invited foreign universities and laboratories to join this MPW run in addition to Japanese universities and laboratories. Features of these SOI devices and experiences with SOI pixel development are presented. ©2007 IEEE.

    DOI: 10.1109/NSSMIC.2007.4437189

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  • Search for Supernova Neutrino Bursts at Super-Kamiokande 査読

    Ikeda, M., Takeda, A., Fukuda, Y., Vagins, M.R., Abe, K., Iida, T., Ishihara, K., Kameda, J., Koshio, Y., Minamino, A., Mitsuda, C., Miura, M., Moriyama, S., Nakahata, M., Obayashi, Y., Ogawa, H., Sekiya, H., Shiozawa, M., Suzuki, Y., Takeuchi, Y., Ueshima, K., Watanabe, H., Yamada, S., Higuchi, I., Ishihara, C., Ishitsuka, M., Kajita, T., Kaneyuki, K., Mitsuka, G., Nakayama, S., Nishino, H., Okumura, K., Saji, C., Takenaga, Y., Clark, S., Desai, S., Dufour, F., Kearns, E., Likhoded, S., Litos, M., Raaf, J.L., Stone, J.L., Sulak, L.R., Wang, W., Goldhaber, M., Casper, D., Cravens, J.P., Dunmore, J., Kropp, W.R., Liu, D.W., Mine, S., Regis, C., Smy, M.B., Sobel, H.W., Ganezer, K.S., Hill, J., Keig, W.E., Jang, J.S., Kim, J.Y., Lim, I.T., Scholberg, K., Tanimoto, N., Walter, C.W., Wendell, R., Ellsworth, R.W., Tasaka, S., Guillian, G., Learned, J.G., Matsuno, S., Messier, M.D., Hayato, Y., Ichikawa, A.K., Ishida, T., Ishii, T., Iwashita, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nitta, K., Oyama, Y., Totsuka, Y., Suzuki, A.T., Hasegawa, M., Hiraide, K., Maesaka, H., Nakaya, T., Nishikawa, K., Sasaki, T., Yamamoto, S., Yokoyama, M., Haines, T.J., Dazeley, S., Hatakeyama, S., Svoboda, R., Sullivan, G.W., Turcan, D., Habig, A., Sato, T., Itow, Y., Koike, T., Tanaka, T., Jung, C.K., Kato, T., Kobayashi, K., Malek, M., McGrew, C., Sarrat, A., Terri, R., Yanagisawa, C., Tamura, N., Idehara, Y., Sakuda, M., Sugihara, M., Kuno, Y., Yoshida, M., Kim, S.B., Yang, B.S., Yoo, J., Ishizuka, T., Okazawa, H., Choi, Y., Seo, H.K., Gando, Y., Hasegawa, T., Inoue, K., Furuse, Y., Ishii, H., Nishijima, K., Ishino, H., Watanabe, Y., Koshiba, M., Chen, S., Deng, Z., Liu, Y., Kielczewska, D., Zalipska, J., Berns, H., Gran, R., Shiraishi, K.K., Stachyra, A., Thrane, E., Washburn, K., Wilkes, R.J.

    Astrophys.J.   669   519 - 524   2007年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1086/521547

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  • Observation of the anisotropy of 10-TeV primary cosmic ray nuclei flux with the super-kamiokande-I detector 査読

    Guillian, G., Hosaka, J., Ishihara, K., Kameda, J., Koshio, Y., Minamino, A., Mitsuda, C., Miura, M., Moriyama, S., Nakahata, M., Namba, T., Obayashi, Y., Ogawa, H., Shiozawa, M., Suzuki, Y., Takeda, A., Takeuchi, Y., Yamada, S., Higuchi, I., Ishitsuka, M., Kajita, T., Kaneyuki, K., Mitsuka, G., Nakayama, S., Nishino, H., Okada, A., Okumura, K., Saji, C., Takenaga, Y., Desai, S., Kearns, E., Stone, J.L., Sulak, L.R., Wang, W., Goldhaber, M., Casper, D., Gajewski, W., Kropp, W.R., Liu, D.W., Mine, S., Smy, M.B., Sobel, H.W., Vagins, M.R., Ganezer, K.S., Hill, J., Keig, W.E., Scholberg, K., Walter, C.W., Ellsworth, R.W., Tasaka, S., Kibayashi, A., Learned, J.G., Matsuno, S., Messier, M.D., Hayato, Y., Ichikawa, A.K., Ishida, T., Ishii, T., Iwashita, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nitta, K., Oyama, Y., Totsuka, Y., Suzuki, A.T., Hasegawa, M., Kato, I., Maesaka, H., Nakaya, T., Nishikawa, K., Sato, H., Yamamoto, S., Yokoyama, M., Haines, T.J., Dazeley, S., Hatakeyama, S., Svoboda, R., Blaufuss, E., Goodman, J.A., Sullivan, G.W., Turcan, D., Habig, A., Fukuda, Y., Itow, Y., Sakuda, M., Yoshida, M., Kim, S.B., Yoo, J., Okazawa, H., Ishizuka, T., Jung, C.K., Kato, T., Kobayashi, K., Malek, M., Mauger, C., McGrew, C., Sharkey, E., Yanagisawa, C., Gando, Y., Hasegawa, T., Inoue, K., Shirai, J., Suzuki, A., Nishijima, K., Ishino, H., Watanabe, Y., Koshiba, M., Kielczewska, D., Berns, H.G., Gran, R., Shiraishi, K.K., Stachyra, A., Washburn, K., Wilkes, R.J.

    Phys.Rev.D   75 ( 062003 )   062003 - 062003   2007年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.75.062003

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    arXiv

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  • Search for neutral Q-balls in super-Kamiokande II 査読

    Takenaga, Y., Abe, K., Hayato, Y., Iida, T., Ishihara, K., Kameda, J., Koshio, Y., Minamino, A., Mitsuda, C., Miura, M., Moriyama, S., Nakahata, M., Obayashi, Y., Ogawa, H., Shiozawa, M., Suzuki, Y., Takeda, A., Takeuchi, Y., Ueshima, K., Higuchi, I., Ishihara, C., Ishitsuka, M., Kajita, T., Kaneyuki, K., Mitsuka, G., Nakayama, S., Nishino, H., Okumura, K., Saji, C., Totsuka, Y., Clark, S., Desai, S., Dufour, F., Herfurth, A., Kearns, E., Likhoded, S., Litos, M., Raaf, J.L., Stone, J.L., Sulak, L.R., Wang, W., Goldhaber, M., Casper, D., Cravens, J.P., Dunmore, J., Griskevich, J., Kropp, W.R., Liu, D.W., Mine, S., Regis, C., Smy, M.B., Sobel, H.W., Vagins, M.R., Ganezer, K.S., Hill, J.E., Keig, W.E., Jang, J.S., Kim, J.Y., Lim, I.T., Scholberg, K., Tanimoto, N., Walter, C.W., Wendell, R., Ellsworth, R.W., Tasaka, S., Guillian, E., Learned, J.G., Matsuno, S., Messier, M.D., Ichikawa, A.K., Ishida, T., Ishii, T., Iwashita, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nishikawa, K., Nitta, K., Oyama, Y., Suzuki, A.T., Hasegawa, M., Hiraide, K., Kato, I., Maesaka, H., Nakaya, T., Sasaki, T., Sato, H., Yamamoto, S., Yokoyama, M., Haines, T.J., Dazeley, S., Hatakeyama, S., Svoboda, R., Sullivan, G.W., Gran, R., Habig, A., Fukuda, Y., Sato, T., Itow, Y., Koike, T., Jung, C.K., Kato, T., Kobayashi, K., Malek, M., McGrew, C., Sarrat, A., Terri, R., Yanagisawa, C., Tamura, N., Sakuda, M., Sugihara, M., Kuno, Y., Yoshida, M., Kim, S.B., Ishizuka, T., Okazawa, H., Choi, Y., Seo, H.K., Gando, Y., Hasegawa, T., Inoue, K., Ishii, H., Nishijima, K., Ishino, H., Watanabe, Y., Koshiba, M., Chen, S., Deng, Z., Liu, Y., Kielczewska, D., Zalipska, J., Berns, H.G., Shiraishi, K.K., Washburn, K., Wilkes, R.J.

    Phys.Lett.B   647 ( 1 )   18 - 22   2007年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.physletb.2007.01.047

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    arXiv

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  • Belle silicon vertex detector for the Super B Factory 査読

    M. Friedl, H. Aihara, T. Arakawa, Y. Asano, T. Aso, A. Bakich, M. Barbero, T. Browder, M. C. Chang, Y. Chao, K. F. Chen, S. Chidzik, A. Chouvikov, Y. K. Choi, J. Dalseno, S. Fratina, Y. Fujiyama, J. Haba, K. Hara, T. Hara, B. Harrop, K. Hayashi, M. Hazumi, D. Heffernan, T. Higuchi, T. Hirakawa, C. Irmler, H. Ishino, S. Kajiwara, H. Kakuno, T. Kameshima, T. Kawasaki, A. Kibayashi, Y. J. Kim, S. Koike, S. Korpar, P. Krizan, H. Kurashiro, A. Kusaka, D. Marlow, H. Matsumoto, H. Miyake, G. R. Moloney, Y. Nakahama, Z. Natkaniec, S. Okuno, S. Ono, Y. Onuki, W. Ostrowicz, H. Ozaki, L. Peak, M. Pernicka, M. Rosen, M. Rozanska, N. Sato, S. Schmid, J. Schumann, S. Stanic, H. Steininger, K. Sumisawa, O. Tajima, K. Takahashi, N. Tamura, M. Tanaka, N. Tani, G. N. Taylor, K. Trabelsi, T. Tsuboyama, K. Uchida, K. Ueno, Y. Ushiroda, G. Varner, K. Varvell, Y. S. Velikzhanin, C. C. Wang, M. Z. Wang, M. Watanabe, Y. Watanabe, H. Yamamoto, Y. Yamashita, T. Ziegler

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   569 ( 1 )   37 - 40   2006年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

    The silicon vertex detector (SVD2) of the Belle experiment at KEK (Tsukuba, Japan) is currently close to its limits in terms of the occupancy of the innermost layer and the readout dead time. In order to cope with further increase in luminosity, different levels of upgrades are proposed: small improvements are possible in the short term by tuning the current system at the cost of signal-to-noise and crosstalk. In 2007, the two inner layers of the SVD2 will be replaced by similar detectors with faster readout electronics (SVD2.5) and in the long term, a major upgrade of the full silicon vertex detector (SVD3) is envisaged for the KEK Super B Factory. These upgrade scenarios will be discussed in detail from the hardware point of view along with the options under study. (c) 2006 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.nima.2006.09.054

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  • Evidence of the purely leptonic decay B- -&gt; tau(-)(v)over-bar(tau) 査読

    K. Ikado, K. Abe, K. Abe, I. Adachi, H. Aihara, K. Akai, M. Akemoto, D. Anipko, K. Arinstein, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, V. Balagura, M. Barbero, A. Bay, I. Bedny, K. Belous, U. Bitenc, I. Bizjak, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, P. Chang, A. Chen, W. T. Chen, Y. Choi, S. Cole, J. Dalseno, M. Danilov, M. Dash, S. Eidelman, D. Epifanov, J. Flanagan, S. Fratina, K. Furukawa, N. Gabyshev, T. Gershon, A. Go, G. Gokhroo, B. Golob, A. Gorisek, H. Ha, J. Haba, K. Hara, T. Hara, N. C. Hastings, K. Hayasaka, H. Hayashii, M. Hazumi, L. Hinz, T. Hokuue, Y. Hoshi, S. Hou, W. -S. Hou, N. Iida, T. Iijima, A. Imoto, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, T. Kamitani, J. H. Kang, S. U. Kataoka, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, E. Kikutani, H. J. Kim, H. O. Kim, K. Kinoshita, H. Koiso, S. Korpar, P. Krizan, P. Krokovny, R. Kulasiri, R. Kumar, C. C. Kuo, A. Kuzmin, Y. -J. Kwon, J. S. Lange, G. Leder, J. Lee, T. Lesiak, A. Limosani, S. -W. Lin, D. Liventsev, D. Marlow, T. Matsumoto, A. Matyja, S. McOnie, S. Michizono, T. Mimashi, W. Mitaroff, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, T. Nagamine, I. Nakamura, T. T. Nakamura, E. Nakano, M. Nakao, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, Y. Ogawa, K. Ohmi, T. Ohshima, N. Ohuchi, K. Oide, T. Okabe, S. Okuno, S. L. Olsen, Y. Onuki, W. Ostrowicz, H. Ozaki, P. Pakhlov, C. W. Park, H. Park, R. Pestotnik, L. E. Piilonen, A. Poluektov, M. Rozanska, Y. Sakai, T. Schietinger, O. Schneider, C. Schwanda, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, T. Shidara, B. Shwartz, V. Sidorov, A. Sokolov, A. Somov, S. Stanic, M. Staric, H. Stoeck, K. Sumisawa, T. Sumiyoshi, S. Suzuki, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, M. Tawada, G. N. Taylor, Y. Teramoto, X. C. Tian, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, K. Ueno, Y. Unno, S. Uno, Y. Usov, G. Varner, S. Villa, C. C. Wang, C. H. Wang, Y. Watanabe, E. Won, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, M. Yoshida, Y. Yusa, L. M. Zhang, Z. P. Zhang, V. Zhilich, D. Zuercher

    PHYSICAL REVIEW LETTERS   97 ( 25 )   1 - 6   2006年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present the first evidence of the decay B--&gt;tau(-)nu(tau), using 414 fb(-1) of data collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. Events are tagged by fully reconstructing one of the B mesons in hadronic modes. We detect the signal with a significance of 3.5 standard deviations including systematics and measure the branching fraction to be B(B--&gt;tau(-)nu(tau))=(1.79(-0.49)(+0.56)(stat)(-0.51)(+0.46)(syst))x10(-4). This implies that f(B)=0.229(-0.031)(+0.036)(stat)(-0.037)(+0.034)(syst) GeV and is the first direct measurement of this quantity.

    DOI: 10.1103/PhysRevLett.97.251802

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  • Time-dependent CP asymmetries in B-0 -&gt; K-s(0)pi(0)gamma transitions 査読

    Y. Ushiroda, K. Sumisawa, K. Abe, K. Abe, I. Adachi, H. Aihara, D. Anipko, K. Arinstein, A. M. Bakich, E. Barberio, M. Barbero, A. Bay, I. Bedny, K. Belous, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, P. Chang, Y. Chao, A. Chen, K. -F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, S. Cole, J. Dalseno, M. Dash, S. Eidelman, N. Gabyshev, T. Gershon, A. Go, B. Golob, H. Ha, J. Haba, K. Hara, M. Hazumi, D. Heffernan, T. Higuchi, Y. Hoshi, S. Hou, W. -S. Hou, T. Iijima, K. Ikado, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, J. H. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. R. Khan, H. Kichimi, H. J. Kim, Y. J. Kim, K. Kinoshita, P. Krizan, R. Kulasiri, R. Kumar, A. Kuzmin, Y. -J. Kwon, M. J. Lee, S. E. Lee, T. Lesiak, A. Limosani, S. -W. Lin, F. Mandl, D. Marlow, T. Matsumoto, A. Matyja, S. McOnie, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, T. Mori, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, S. Ogawa, T. Ohshima, S. Okuno, Y. Onuki, H. Ozaki, P. Pakhlov, C. W. Park, H. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, Y. Sakai, N. Satoyama, T. Schietinger, O. Schneider, J. Schumann, A. J. Schwartz, R. Seidl, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, J. B. Singh, A. Somov, N. Soni, M. Staric, H. Stoeck, S. Suzuki, S. Y. Suzuki, O. Tajima, F. Takasaki, K. Tamai, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. E. Varvell, S. Villa, C. H. Wang, Y. Watanabe, R. Wedd, E. Won, Q. L. Xie, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, L. M. Zhang, Z. P. Zhang, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW D   74 ( 11 )   1 - 6   2006年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMERICAN PHYSICAL SOC  

    We report measurements of CP violation parameters in B-0 -&gt; K-S(0)pi(0)gamma transitions based on a data sample of 535x10(6)B (B) over bar pairs collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. One neutral B meson is fully reconstructed in the B-0 -&gt; K-S(0)pi(0)gamma mode. The flavor of the accompanying B meson is identified from its decay products. We obtain time-dependent and direct CP violation parameters S and A for a K-S(0)pi(0) invariant mass up to 1.8 GeV/c(2) as S-KS(0)pi(0)gamma=-0.10 +/- 0.31 +/- 0.07 and A(KS)(0)pi(0)gamma=-0.20 +/- 0.20 +/- 0.06. For a K-S(0)pi(0) invariant mass near the K-*0(892) resonance, we obtain S-K(*0)gamma=-0.32(-0.33)(+0.36)+/- 0.05 and A(K)(*0)gamma=-0.20 +/- 0.24 +/- 0.05.

    DOI: 10.1103/PhysRevD.74.111104

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  • Belle SVD2 vertex detector 査読

    H. Aihara, Y. Asano, T. Aso, A. Bakich, M. Barbero, T. Browder, M. C. Chang, Y. Chao, K. F. Chen, S. Chidzik, A. Chouvikov, J. Dalseno, R. Dowd, R. Fernholz, S. Fratina, M. Friedl, H. Fujii, Y. Fujiyama, J. Haba, K. Hara, T. Hara, B. Harrop, T. Haruyama, K. Hayashi, M. Hazumi, D. Heffernan, T. Higuchi, A. Igarashi, Y. Igarashi, H. Ikeda, H. Ishino, S. Iwaida, T. Kameshima, P. Kapusta, K. Kasami, T. Kawasaki, A. Kibayashi, S. Koike, S. Korpar, P. Krizan, H. Kurashiro, A. Kusaka, T. Lesiak, D. Marlow, H. Matsumoto, Y. Mikami, H. Miyake, G. R. Moloney, Z. Natkaniec, S. Nozaki, R. Ohkubo, S. Okuno, S. Ono, Y. Onuki, W. Ostrowicz, H. Ozaki, L. Peak, M. Pernicka, M. Rosen, M. Rozanska, N. Sato, S. Schmid, J. Schuemann, T. Shibata, R. Stamen, S. Stanic, H. Steininger, K. Sumisawa, J. Suzuki, H. Tajima, O. Tajima, K. Takahashi, F. Takasaki, N. Tamura, M. Tanaka, G. N. Taylor, K. Trabelsi, T. Tsuboyama, K. Uchida, K. Ueno, K. Ueno, Y. Ushiroda, S. Vahsen, G. Varner, K. Varvell, Y. S. Velikzhanin, C. C. Wang, M. Z. Wang, M. Watanabe, Y. Watanabe, H. Yamamoto, Y. Yamashita, M. Yamauchi, R. Yang, Y. Yasu, T. Ziegler, D. Zontar

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   568 ( 1 )   269 - 273   2006年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

    A new silicon vertex detector for the Belle experiment has been in operation at the high-luminosity asymmetric energy electron-positron collider KEKB since October 2003. It provides a larger polar angle acceptance, a better vertex resolution and a higher radiation tolerance than the previous one. The obtained performances indicate that the SVD2 works reliably, in very good agreement with expectations. (c) 2006 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.nima.2006.05.281

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  • Measurement of the quark mixing parameter cos2 phi(1) using time-dependent Dalitz analysis of (B)over-bar(0)-&gt; D[K-S(0)pi(+)pi(-)]h(0) 査読

    P. Krokovny, K. Abe, K. Abe, I. Adachi, H. Aihara, D. Anipko, K. Arinstein, Y. Asano, V. Aulchenko, T. Aushev, S. Bahinipati, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, U. Bitenc, I. Bizjak, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, Y. Chao, A. Chen, W. T. Chen, Y. Choi, A. Chuvikov, S. Cole, J. Dalseno, M. Danilov, M. Dash, S. Eidelman, D. Epifanov, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, A. Go, A. Gorisek, H. Ha, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, T. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, S. Hou, W. -S. Hou, Y. B. Hsiung, T. Iijima, K. Ikado, A. Imoto, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, J. H. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, S. M. Kim, K. Kinoshita, S. Korpar, P. Krizan, R. Kulasiri, R. Kumar, C. C. Kuo, A. Kuzmin, Y. -J. Kwon, J. Lee, T. Lesiak, J. Li, S. -W. Lin, G. Majumder, T. Matsumoto, S. McOnie, W. Mitaroff, K. Miyabayashi, Y. Miyazaki, T. Mori, I. Nakamura, M. Nakao, S. Nishida, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, H. Ozaki, P. Pakhlov, C. W. Park, H. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, A. Poluektov, M. Rozanska, Y. Sakai, T. R. Sarangi, N. Sato, N. Satoyama, T. Schietinger, O. Schneider, K. Senyo, H. Shibuya, B. Shwartz, J. B. Singh, A. Sokolov, A. Somov, N. Soni, R. Stamen, M. Staric, H. Stoeck, K. Sumisawa, O. Tajima, F. Takasaki, K. Tamai, M. Tanaka, Y. Teramoto, X. C. Tian, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, S. Uno, P. Urquijo, Y. Ushiroda, G. Varner, K. E. Varvell, S. Villa, C. C. Wang, C. H. Wang, Y. Watanabe, E. Won, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, J. Ying, L. M. Zhang, Z. P. Zhang, V. Zhilich

    PHYSICAL REVIEW LETTERS   97 ( 8 )   1 - 6   2006年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present a measurement of the angle phi(1) of the Cabibbo-Kobayashi-Maskawa unitarity triangle using a time-dependent Dalitz analysis of D -&gt; K-S(0)pi(+)pi(-) decays produced in neutral B meson decay to a neutral D meson and a light meson ((B) over bar (0)-&gt; D((*))h(0)). The method allows a direct extraction of 2 phi(1) and, therefore, helps to resolve the ambiguity between 2 phi(1) and pi-2 phi(1) in the measurement of sin2 phi(1). We obtain sin2 phi(1)=0.78 +/- 0.44 +/- 0.22 and cos2 phi(1)=1.87(-0.53-0.32)(+0.40+0.22). The sign of cos2 phi(1) is determined to be positive at 98.3% C.L.

    DOI: 10.1103/PhysRevLett.97.081801

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  • Measurement of forward-backward asymmetry and wilson coefficients in B -&gt; K(*)l(+)l(-) 査読

    A. Ishikawa, K. Abe, I. Adachi, H. Aihara, D. Anipko, Y. Asano, T. Aushev, A. M. Bakich, V. Balagura, M. Barbero, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, P. Chang, Y. Chao, A. Chen, B. G. Cheon, Y. Choi, Y. K. Choi, A. Chuvikov, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, S. Fratina, N. Gabyshev, T. Gershon, G. Gokhroo, B. Golob, A. Gorisek, H. Ha, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. Hazumi, L. Hinz, T. Hokuue, Y. Hoshi, S. Hou, W. -S. Hou, Y. B. Hsiung, T. Iijima, K. Ikado, K. Inami, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, J. H. Kang, S. U. Kataoka, N. Katayama, H. Kawai, T. Kawasaki, H. R. Khan, H. Kichimi, S. K. Kim, S. M. Kim, K. Kinoshita, S. Korpar, P. Krizan, R. Kulasiri, R. Kumar, C. C. Kuo, Y. -J. Kwon, J. Lee, S. E. Lee, T. Lesiak, J. Li, A. Limosani, S. -W. Lin, D. Liventsev, G. Majumder, F. Mandl, T. Matsumoto, A. Matyja, S. McOnie, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, T. Nagamine, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, Y. Onuki, H. Ozaki, C. W. Park, R. Pestotnik, L. E. Piilonen, M. Rozanska, Y. Sakai, N. Sato, N. Satoyama, T. Schietinger, O. Schneider, C. Schwanda, A. J. Schwartz, R. Seidl, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, A. Somov, N. Soni, R. Stamen, S. Stanic, M. Staric, H. Stoeck, K. Sumisawa, S. Suzuki, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, K. Trabelsi, T. Tsukamoto, S. Uehara, S. Uno, P. Urquijo, Y. Ushiroda, Y. Usov, G. Varner, S. Villa, C. C. Wang, C. H. Wang, M. -Z. Wang, Y. Watanabe, E. Won, Q. L. Xie, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, J. Ying, Y. Yusa, J. Zhang, L. M. Zhang, Z. P. Zhang

    PHYSICAL REVIEW LETTERS   96 ( 25 )   1 - 6   2006年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the first measurement of the forward-backward asymmetry and the ratios of Wilson coefficients A(9)/A(7) and A(10)/A(7) in B -&gt; K(*)l(+)l(-), where l represents an electron or a muon. We find evidence for the forward-backward asymmetry with a significance of 3.4 sigma. The results are obtained from a data sample containing 386x10(6) (B) over bar pairs that were collected on the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider.

    DOI: 10.1103/PhysRevLett.96.251801

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  • Observation of b -&gt; d gamma and determination of vertical bar V-td/V-ts vertical bar 査読

    D. Mohapatra, M. Nakao, S. Nishida, K. Abe, K. Abe, I. Adachi, H. Aihara, D. Anipko, K. Arinstein, Y. Asano, V. Aulchenko, T. Aushev, S. Bahinipati, A. M. Bakich, V. Balagura, M. Barbero, I. Bedny, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, Y. Chao, A. Chen, K. -F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, Y. Choi, A. Chuvikov, S. Cole, J. Dalseno, M. Danilov, M. Dash, J. Dragic, A. Drutskoy, S. Eidelman, D. Epifanov, S. Fratina, N. Gabyshev, T. Gershon, G. Gokhroo, B. Golob, A. Gorisek, H. C. Ha, J. Haba, T. Hara, N. C. Hastings, K. Hayasaka, H. Hayashii, M. Hazumi, L. Hinz, T. Hokuue, Y. Hoshi, S. Hou, W. -S. Hou, Y. B. Hsiung, T. Iijima, A. Imoto, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, J. H. Kang, S. U. Kataoka, N. Katayama, T. Kawasaki, H. R. Khan, H. Kichimi, H. J. Kim, H. O. Kim, S. M. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kulasiri, R. Kumar, C. C. Kuo, A. Kuzmin, Y. -J. Kwon, J. S. Lange, G. Leder, J. Lee, T. Lesiak, A. Limosani, S. -W. Lin, D. Liventsev, G. Majumder, F. Mandl, D. Marlow, T. Matsumoto, A. Matyja, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, T. Mori, E. Nakano, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, N. Parslow, L. S. Peak, R. Pestotnik, L. E. Piilonen, A. Poluektov, F. J. Ronga, M. Rozanska, Y. Sakai, T. R. Sarangi, N. Sato, T. Schietinger, O. Schneider, J. Schuemann, C. Schwanda, A. J. Schwartz, R. Seidl, M. E. Sevior, M. Shapkin, H. Shibuya, B. Shwartz, V. Sidorov, A. Sokolov, A. Somov, N. Soni, R. Stamen, S. Stanic, M. Staric, T. Sumiyoshi, S. Suzuki, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, K. Trabelsi, T. Tsukamoto, S. Uehara, T. Uglov, K. Ueno, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. E. Varvell, S. Villa, C. C. Wang, C. H. Wang, M. -Z. Wang, Y. Watanabe, J. Wicht, E. Won, Q. L. Xie, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, J. Ying, Y. Yusa, L. M. Zhang, Z. P. Zhang, V. Zhilich, D. Zurcher

    PHYSICAL REVIEW LETTERS   96 ( 22 )   1 - 5   2006年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the observation of the flavor-changing neutral current process b -&gt; d gamma using a sample of 386 x 10(6) B meson pairs accumulated by the Belle detector at the KEKB e(+)e(-) collider. We measure branching fractions for the exclusive modes B- -&gt; rho(-)gamma, (B) over bar (0) -&gt; rho(0)gamma, and (B) over bar (0) -&gt; omega gamma. Assuming that these three modes are related by isospin, we find B((B) over bar -&gt; (rho, omega)gamma) = (1.32(-0.31)(+0.34)(stat)(-0.09)(+0.10)(syst)) x 10(-6) with a significance of 5.1 sigma. This result is used to determine the ratio of Cabibbo-Kobayashi-Maskawa matrix elements vertical bar V-td/V-ts vertical bar to be 0.199(-0.025)(+0.026)(exp)(-0.015)(+0.018)(theor).

    DOI: 10.1103/PhysRevLett.96.221601

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  • Measurement of phi(3) with a Dalitz plot analysis of B+-&gt;(DK(*)+)-K-(*) decay 査読

    A. Poluektov, K. Abe, K. Abe, I. Adachi, H. Aihara, D. Anipko, K. Arinstein, T. Aushev, S. Bahinipati, A. M. Bakich, V. Balagura, E. Barberio, M. Barbero, I. Bedny, K. Belous, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, P. Chang, Y. Chao, A. Chen, W. T. Chen, B. G. Cheon, R. Chistov, Y. Choi, A. Chuvikov, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, D. Epifanov, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, G. Gokhroo, B. Golob, A. Gorisek, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. Hazumi, T. Hokuue, Y. Hoshi, W. -S. Hou, T. Iijima, K. Ikado, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, Y. Iwasaki, H. Kawai, T. Kawasaki, H. R. Khan, H. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kulasiri, R. Kumar, C. C. Kuo, A. Kuzmin, Y. -J. Kwon, J. Lee, T. Lesiak, J. Li, D. Liventsev, J. MacNaughton, G. Majumder, F. Mandl, D. Marlow, T. Matsumoto, A. Matyja, S. McOnie, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, D. Mohapatra, T. Nagamine, I. Nakamura, E. Nakano, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, H. Ozaki, P. Pakhlov, H. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, Y. Sakai, T. R. Sarangi, N. Sato, N. Satoyama, K. Sayeed, T. Schietinger, O. Schneider, A. J. Schwartz, R. Seidl, M. E. Sevior, M. Shapkin, H. Shibuya, B. Shwartz, J. B. Singh, A. Sokolov, A. Somov, R. Stamen, S. Stanic, M. Staric, H. Stoeck, K. Sumisawa, S. Suzuki, S. Y. Suzuki, F. Takasaki, M. Tanaka, Y. Teramoto, X. C. Tian, K. Trabelsi, T. Tsukamoto, S. Uehara, T. Uglov, K. Ueno, Y. Unno, S. Uno, P. Urquijo, Y. Ushiroda, Y. Usov, G. Varner, K. E. Varvell, S. Villa, C. H. Wang, Y. Watanabe, E. Won, Q. L. Xie, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, J. Ying, L. M. Zhang, Z. P. Zhang, V. Zhilich, D. Zuercher

    PHYSICAL REVIEW D   73 ( 11 )   1 - 16   2006年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present a measurement of the unitarity triangle angle phi(3) using a Dalitz plot analysis of the K-S(0)pi(+)pi(-) decay of the neutral D meson from the B-+/--&gt;(DK(*)+/-)-K-(*) process. The method exploits the interference between D-0 and (D) over bar (0) to extract the angle phi(3), strong phase delta and the ratio r of suppressed and allowed amplitudes. We apply this method to a 357 fb(-1) data sample collected by the Belle experiment. The analysis uses three modes: B+-&gt; DK+, B+-&gt;(DK+)-K-* with D-*-&gt; D pi(0), and B+-&gt; DK*+ with K*+-&gt; K-S(0)pi(+), as well as the corresponding charge-conjugate modes. From a combined maximum likelihood fit to the three modes, we obtain phi(3)=53 degrees(+15 degrees s)(-18 degrees)(stat)+/- 3 degrees(syst)+/- 9 degrees(model). The corresponding 2 standard deviation interval is 8 degrees &lt;phi(3)&lt; 111 degrees.

    DOI: 10.1103/PhysRevD.73.112009

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  • Measurement of branching fraction and direct CP asymmetry in B-0 -&gt; rho(0)pi(0) decays 査読

    J. Dragic, K. Abe, K. Abe, I. Adachi, H. Aihara, D. Anipko, Y. Asano, T. Aushev, S. Bahinipati, A. M. Bakich, V. Balagura, M. Barbero, A. Bay, I. Bedny, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, M. -C. Chang, P. Chang, Y. Chao, A. Chen, W. T. Chen, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, A. Chuvikov, S. Cole, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, N. Gabyshev, A. Garmash, T. Gershon, A. Go, G. Gokhroo, B. Golob, A. Gorisek, H. C. Ha, J. Haba, T. Hara, N. C. Hastings, K. Hayasaka, H. Hayashii, M. Hazumi, L. Hinz, Y. Hoshi, S. Hou, W. -S. Hou, Y. B. Hsiung, T. Iijima, K. Ikado, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, C. Jacoby, J. H. Kang, P. Kapusta, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, S. K. Kim, S. M. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kulasiri, C. C. Kuo, A. Kusaka, A. Kuzmin, Y. -J. Kwon, G. Leder, J. Lee, T. Lesiak, J. Li, A. Limosani, S. -W. Lin, D. Liventsev, J. MacNaughton, F. Mandl, D. Marlow, T. Matsumoto, Y. Mikami, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, D. Mohapatra, T. Mori, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, C. W. Park, H. Park, R. Pestotnik, L. E. Piilonen, M. Rozanska, Y. Sakai, T. R. Sarangi, N. Sato, N. Satoyama, T. Schietinger, O. Schneider, J. Schuemann, C. Schwanda, A. J. Schwartz, R. Seidl, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, B. Shwartz, J. B. Singh, A. Sokolov, A. Somov, N. Soni, R. Stamen, S. Stanic, M. Staric, K. Sumisawa, T. Sumiyoshi, S. Suzuki, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Ushiroda, Y. Usov, G. Varner, S. Villa, C. C. Wang, C. H. Wang, M. -Z. Wang, Y. Watanabe, J. Wicht, E. Won, Q. L. Xie, B. D. Yabsley, A. Yamaguchi, M. Yamauchi, J. Ying, C. C. Zhang, J. Zhang, L. M. Zhang, Z. P. Zhang, V. Zhilich, D. Zuercher

    PHYSICAL REVIEW D   73 ( 11 )   1 - 6   2006年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a measurement of the branching fraction of the decay B-0 -&gt;rho(0)pi(0), using 386x10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We detect 51(-13)(+14) signal events with a significance of 4.2 standard deviations, including systematic uncertainties, and measure the branching fraction to be B(B-0 -&gt;rho(0)pi(0))=(3.12(-0.82)(+0.88)(stat)+/- 0.33(syst)(-0.68)(+0.50)(model))x10(-6). We also perform the first measurement of direct CP violating asymmetry in this mode.

    DOI: 10.1103/PhysRevD.73.111105

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  • Vertex detector for super Belle experiment 査読

    T Kawasaki, M Barbero, M Friedl, J Haba, M Hazumi, D Heffernan, H Ishino, T Kameshima, S Ono, M Pernicka, O Tajima, K Trabelsi, T Tsuboyama, G Varner, M Watanabe

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   560 ( 1 )   53 - 56   2006年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

    Using a high resolution silicon vertex detector and a large number of B meson decays, the Belle experiment has succeeded in measuring time-dependent CP asymmetry with high precision. To continue the search for physics beyond the standard model, an upgrade of the KEKB collider to a luminosity of 10(35-36) cm(-2) s(-1) is proposed. Such a luminosity upgrade will also require an upgraded ("Super") Belle experiment. Discussions have started on the conceptual design for the silicon vertexing upgrade of this detector. Since the momenta of particles is not high in B factory operating at the gamma(4S) resonance, it is important to avoid high occupancy while keeping the material budget low. A fast data acquisition system and radiation hardness are also required. In this report, the conceptual design of a vertex detector for the Super Belle experiment is shown. The status of R&D topics is also reported. (c) 2005 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.nima.2005.11.196

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  • Measurement of CP violation in B-0 -&gt; D*-pi(+) and B-0 -&gt; D-pi(+) decays 査読

    F. J. Ronga, T. R. Sarangi, K. Abe, I. Adachi, H. Aihara, D. Anipko, K. Arinstein, Y. Asano, T. Aushev, S. Bahinipati, A. M. Bakich, V. Balagura, E. Barberio, M. Barbero, K. Belous, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, P. Chang, A. Chen, W. T. Chen, B. G. Cheon, R. Chistov, Y. Choi, A. Chuvikov, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, D. Epifanov, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, G. Gokhroo, B. Golob, A. Gorisek, J. Haba, K. Hara, T. Hara, K. Hayasaka, H. Hayashii, M. Hazumi, T. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, S. Hou, W. -S. Hou, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, Y. Iwasaki, J. H. Kang, H. Kawai, T. Kawasaki, H. R. Khan, H. J. Kim, K. Kinoshita, S. Korpar, P. Krokovny, R. Kulasiri, R. Kumar, C. C. Kuo, Y. -J. Kwon, G. Leder, J. Lee, T. Lesiak, J. Li, A. Limosani, D. Liventsev, G. Majumder, F. Mandl, T. Matsumoto, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, D. Mohapatra, T. Nagamine, I. Nakamura, E. Nakano, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, P. Pakhlov, C. W. Park, H. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, A. Poluektov, M. Rozanska, Y. Sakai, N. Sato, N. Satoyama, K. Sayeed, T. Schietinger, O. Schneider, A. J. Schwartz, R. Seidl, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, B. Shwartz, J. B. Singh, A. Sokolov, A. Somov, N. Soni, R. Stamen, S. Stanic, M. Staric, H. Stoeck, K. Sumisawa, S. Suzuki, S. Y. Suzuki, F. Takasaki, M. Tanaka, Y. Teramoto, X. C. Tian, K. Trabelsi, T. Tsukamoto, S. Uehara, K. Ueno, S. Uno, P. Urquijo, Y. Ushiroda, Y. Usov, G. Varner, K. E. Varvell, S. Villa, C. H. Wang, Y. Watanabe, E. Won, Q. L. Xie, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, J. Ying, C. C. Zhang, L. M. Zhang, Z. P. Zhang, V. Zhilich, D. Zuercher

    PHYSICAL REVIEW D   73 ( 9 )   1 - 17   2006年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report measurements of time-dependent decay rates for B-0 -&gt; D(*)-pi(+) decays and extraction of CP violation parameters that depend on phi(3). Using fully reconstructed D-(*)pi events and partially reconstructed D-*pi events from a data sample that contains 386x10(6) B (B) over bar pairs that was collected near the Upsilon(4S) resonance, with the Belle detector at the KEKB asymmetric energy e(+)e(-) collider, we obtain the CP violation parameters S+(D-(*)pi) and S-(D-(*)pi). We obtain S+(D-*pi)=0.049 +/- 0.020(stat)+/- 0.011(sys), S-(D-*pi)=0.031 +/- 0.019(stat)+/- 0.011(sys), and S+(D pi)=0.031 +/- 0.030(stat)+/- 0.012(sys), S-(D pi)=0.068 +/- 0.029(stat)+/- 0.012(sys). These results are an indication of CP violation in B-0 -&gt; D*-pi(+) and B-0 -&gt; D-pi(+) decays at the 2.5 sigma and 2.2 sigma levels, respectively. If we use the values of R-D((*))pi that are derived using assumptions of factorization and SU(3) symmetry, branching fraction measurements for the B -&gt; D-s((*))pi modes, and lattice QCD calculations, we can restrict the allowed region of \sin(2 phi(1)+phi(3)\ to be above 0.44 and 0.52 at 68% confidence level from the D-*pi and D pi modes, respectively.

    DOI: 10.1103/PhysRevD.73.092003

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  • Measurement of the branching fraction, polarization, and CP asymmetry for B-0 -&gt;rho(+)rho(-) decays, and determination of the Cabibbo-Kobayashi-Maskawa phase phi(2) 査読

    A Somov, AJ Schwartz, K Abe, K Abe, Adachi, I, H Aihara, D Anipko, K Arinstein, Y Asano, Aulchenko, V, T Aushev, T Aziz, S Bahinipati, AM Bakich, Balagura, V, A Bay, Bedny, I, K Belous, U Bitenc, Bizjak, I, S Blyth, A Bondar, A Bozek, M Bracko, J Brodzicka, TE Browder, MC Chang, P Chang, Y Chao, A Chen, WT Chen, BG Cheon, R Chistov, SK Choi, Y Choi, YK Choi, A Chuvikov, S Cole, J Dalseno, M Dash, J Dragic, A Drutskoy, S Eidelman, D Epifanov, N Gabyshev, A Garmash, T Gershon, A Go, G Gokhroo, B Golob, K Hara, T Hara, NC Hastings, K Hayasaka, H Hayashii, M Hazumi, Y Hoshi, S Hou, WS Hou, YB Hsiung, T Iijima, K Ikado, K Inami, A Ishikawa, H Ishino, R Itoh, M Iwasaki, Y Iwasaki, JH Kang, P Kapusta, N Katayama, H Kawai, T Kawasaki, H Kichimi, HJ Kim, SK Kim, SM Kim, K Kinoshita, S Korpar, P Krizan, P Krokovny, CC Kuo, A Kusaka, A Kuzmin, YJ Kwon, G Leder, T Lesiak, J Li, A Limosani, SW Lin, J MacNaughton, F Mandl, D Marlow, T Matsumoto, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, Y Miyazaki, R Mizuk, D Mohapatra, Y Nagasaka, M Nakao, Z Natkaniec, S Nishida, O Nitoh, S Noguchi, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, W Ostrowicz, H Ozaki, H Palka, CW Park, H Park, R Pestotnik, LE Piilonen, A Poluektov, Y Sakai, TR Sarangi, N Sato, T Schietinger, O Schneider, C Schwanda, R Seidl, K Senyo, ME Sevior, M Shapkin, H Shibuya, B Shwartz, Sidorov, V, A Sokolov, N Soni, S Stanic, M Staric, T Sumiyoshi, S Suzuki, O Tajima, F Takasaki, K Tamai, N Tamura, M Tanaka, GN Taylor, Y Teramoto, XC Tian, K Trabelsi, T Tsuboyama, T Tsukamoto, S Uehara, T Uglov, K Ueno, Y Unno, S Uno, P Urquijo, Y Ushiroda, Y Usov, G Varner, S Villa, CH Wang, MZ Wang, Y Watanabe, E Won, QL Xie, BD Yabsley, A Yamaguchi, M Yamauchi, J Ying, LM Zhang, ZP Zhang, Zhilich, V

    PHYSICAL REVIEW LETTERS   96 ( 17 )   1 - 6   2006年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We have measured the branching fraction B, longitudinal polarization fraction f(L), and CP asymmetry coefficients A and S for B-0-&gt;rho(+)rho(-) decays with the Belle detector at the KEKB e(+)e(-) collider using 253 fb(-1) of data. We obtain B=[22.8 +/- 3.8(stat)(-2.6)(+2.3)(syst)]x10(-6), f(L)=0.941(-0.040)(+0.034)(stat)+/- 0.030(syst), A=0.00 +/- 0.30(stat)+/- 0.09(syst), and S=0.08 +/- 0.41(stat)+/- 0.09(syst). These values are used to constrain the Cabibbo-Kobayashi-Maskawa phase phi(2); the solution consistent with the standard model is phi(2)=(88 +/- 17)degrees or 59 degrees &lt;phi 2 &lt; 115 degrees at 90% C.L.

    DOI: 10.1103/PhysRevLett.96.171801

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  • Status of the Belle silicon vertex detector 査読

    Z Natkaniec, H Aihara, Y Asano, T Aso, A Bakich, T Browder, MC Chang, Y Chao, KF Chen, S Chidzik, A Chouvikov, J Dalseno, R Dowd, R Fernholz, S Fratina, M Friedl, H Fujii, Y Fujiyama, J Haba, K Hara, T Hara, B Harrop, T Haruyama, K Hayashi, M Hazumi, D Heffernan, T Higuchi, A Igarashi, Y Igarashi, H Ikeda, H Ishino, S Iwaida, T Kameshima, P Kapusta, K Kasami, T Kawasaki, A Kibayashi, S Koike, S Korpar, P Krizan, H Kurashiro, A Kusaka, T Lesiak, D Marlow, H Matsumoto, Y Mikami, H Miyake, GR Moloney, S Nozaki, R Ohkubo, S Okuno, S Ono, Y Onuki, W Ostrowicz, H Ozaki, L Peak, M Pernicka, M Rosen, M Rozanska, N Sato, S Schmid, J Schumann, T Shibata, R Stamen, S Stanic, H Steininger, K Sumisawa, J Suzuki, H Tajima, H Tajima, K Takahashi, F Takasaki, N Tamura, M Tanaka, GN Taylor, K Trabelsi, W Trischuk, T Tsuboyama, K Uchida, K Ueno, K Ueno, Y Ushiroda, S Vahsen, G Varner, K Varvell, YS Velikzhanin, CC Wang, MZ Wang, M Watanabe, Y Watanabe, H Yamamoto, Y Yamashita, M Yamauchi, R Yang, Y Yasu, T Ziegler, D Zontar

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   560 ( 1 )   1 - 4   2006年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

    The old silicon vertex detector (SVD1) of the Belle detector, operating at the high-luminosity asymmetric energy e+e- collider KEKB, was replaced by an upgraded version (SVD2) in 2003. The new detector has modified geometry and redesigned readout electronics, providing a larger polar angle acceptance, better vertex resolution, improved radiation hardness and reduced dead time. The operation of the detector started successfully in October 2003. The basic concepts of the SVD2 design as well as its performance after 10 months of data taking are described in this paper. (c) 2005 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.nima.2005.11.228

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  • Improved constraints on D-0-(D)over-bar(0) mixing in D-0 -> K+ pi(-) decays from the Belle detector 査読

    LM Zhang, ZP Zhang, J Li, K Abe, K Abe, Adachi, I, H Aihara, D Anipko, K Arinstein, Y Asano, T Aushev, S Bahinipati, AM Bakich, Balagura, V, M Barbero, A Bay, Bedny, I, K Belous, U Bitenc, Bizjak, I, S Blyth, A Bondar, A Bozek, M Bracko, J Brodzicka, TE Browder, MC Chang, P Chang, Y Chao, A Chen, WT Chen, BG Cheon, R Chistov, SK Choi, Y Choi, YK Choi, A Chuvikov, S Cole, J Dalseno, M Danilov, M Dash, A Drutskoy, S Eidelman, N Gabyshev, T Gershon, A Go, G Gokhroo, B Golob, A Gorisek, HC Ha, J Haba, T Hara, NC Hastings, K Hayasaka, H Hayashii, M Hazumi, Y Hoshi, S Hou, WS Hou, YB Hsiung, T Iijima, K Ikado, K Inami, A Ishikawa, H Ishino, R Itoh, M Iwasaki, Y Iwasaki, JH Kang, P Kapusta, N Katayama, H Kawai, T Kawasaki, H Kichimi, HJ Kim, SK Kim, SM Kim, K Kinoshita, S Korpar, P Krizan, P Krokovny, R Kulasiri, R Kumar, CC Kuo, A Kuzmin, YJ Kwon, G Leder, J Lee, T Lesiak, SW Lin, D Liventsev, F Mandl, T Matsumoto, Y Mikami, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, Y Miyazaki, R Mizuk, D Mohapatra, T Mori, M Nakao, Z Natkaniec, S Nishida, O Nitoh, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, W Ostrowicz, H Ozaki, CW Park, H Park, R Pestotnik, LE Piilonen, Y Sakai, N Sato, N Satoyama, T Schietinger, O Schneider, C Schwanda, AJ Schwartz, R Seidl, K Senyo, ME Sevior, M Shapkin, H Shibuya, B Shwartz, JB Singh, A Sokolov, A Somov, N Soni, R Stamen, S Stanic, M Staric, K Sumisawa, T Sumiyoshi, S Suzuki, F Takasaki, K Tamai, N Tamura, M Tanaka, GN Taylor, Y Teramoto, XC Tian, K Trabelsi, T Tsuboyama, T Tsukamoto, S Uehara, T Uglov, K Ueno, Y Unno, S Uno, P Urquijo, Y Usov, G Varner, S Villa, CC Wang, CH Wang, Y Watanabe, E Won, QL Xie, BD Yabsley, A Yamaguchi, M Yamauchi, J Ying, Y Yuan, CC Zhang, J Zhang, Zhilich, V, D Zurcher

    PHYSICAL REVIEW LETTERS   96 ( 15 )   1 - 6   2006年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the results of a search for D-0-D-0 mixing in D-0-> K(+)pi(-) decays based on 400 fb(-1) of data accumulated by the Belle detector at KEKB. Both assuming CP conservation and allowing for CP violation, we fit the decay-time distribution for the mixing parameters x(') and y('), as well as for the parameter R-D, the ratio of doubly Cabibbo-suppressed decays to Cabibbo-favored decays. The 95% confidence level region in the (x('2),y(')) plane is obtained using a frequentist method. Assuming CP conservation, we find x('2)< 0.72x10(-3) and -9.9x10(-3)< y(')< 6.8x10(-3) at the 95% confidence level; these are the most stringent constraints on the mixing parameters to date. The no-mixing point (0,0) has a confidence level of 3.9%. Assuming no mixing, we measure R-D=(0.377 +/- 0.008 +/- 0.005)%.

    DOI: 10.1103/PhysRevLett.96.151801

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  • 27aWL-7 SOI技術によるPixel検出器の開発(27aWL 半導体検出器(1),素粒子実験領域)

    新井,康夫, 池上,陽一, 後田,裕, 海野,義信, 田島,治, 坪山,透, 寺田,進, 羽澄,昌史, 池田,博一, 原,和彦, 石野,宏和, 川崎,健夫, Varner,Gary, Martin,Elena, Tajima,Hiro

    日本物理学会講演概要集   61 ( 1 )   18   2006年3月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:社団法人日本物理学会  

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  • High energy neutrino astronomy using upward-going muons in Super-Kamiokande-I 査読

    Abe, K., Hosaka, J., Iida, T., Ishihara, K., Kameda, J., Koshio, Y., Minamino, A., Mitsuda, C., Miura, M., Moriyama, S., Nakahata, M., Obayashi, Y., Ogawa, H., Shiozawa, M., Suzuki, Y., Takeda, A., Takeuchi, Y., Higuchi, I., Ishitsuka, M., Ishitsuka, M., Kajita, T., Kaneyuki, K., Mitsuka, G., Nakayama, S., Nishino, H., Okada, A., Okumura, K., Saji, C., Takenaga, Y., Clark, S., Desai, S., Defour, F., Kearns, E., Likhoded, S., Litos, M., Raaf, J.L., Stone, J.L., Sulak, L.R., Wang, W., Goldhaber, M., Casper, D., Cravens, J.P., Dunmore, J., Kropp, W.R., Liu, D.W., Mine, S., Regis, C., Smy, M.B., Sobel, H.W., Vagins, M.R., Ganezer, K.S., Hill, J.E., Keig, W.E., Jang, J.S., Kim, J.Y., Lim, I.T., Scholberg, K., Tanimoto, N., Walter, C.W., Wendell, R., Ellsworth, R.W., Tasaka, S., Guillian, E., Learned, J.G., Matsuno, S., Messier, M.D., Hayato, Y., Ichikawa, A.K., Ishida, T., Ishii, T., Iwashita, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nitta, K., Oyama, Y., Totsuka, Y., Suzuki, A.T., Hasegawa, M., Hiraide, K., Kato, I., Maesaka, H., Nakaya, T., Nishikawa, K., Sasaki, T., Sato, H., Yamamoto, S., Yokoyama, M., Haines, T.J., Dazeley, S., Hatakeyama, S., Svoboda, R., Sullivan, G.W., Turcan, D., Clough, A., Habig, A., Fukuda, Y., Sato, T., Itow, Y., Koike, T., Jung, C.K., Kato, T., Kobayashi, K., Malek, M., McGrew, C., Sarrat, A., Terri, R., Yanagisawa, C., Tamura, N., Sakuda, M., Sugihara, M., Kuno, Y., Yoshida, M., Kim, S.B., Yang, B.S., Yoo, J., Ishizuka, T., Okazawa, H., Choi, Y., Seo, H.K., Gando, Y., Hasegawa, T., Inoue, K., Nishijima, K., Ishino, H., Watanabe, Y., Koshiba, M., Kielczewska, D., Zalipska, J., Berns, H.G., Gran, R., Shiraishi, K.K., Stachyra, A., Washburn, K., Wilkes, R.J.

    Astrophys.J.   652   198 - 205   2006年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1086/508016

    arXiv

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  • Monolithic Pixel Detector in a 0.15 mu m SOI Technology 査読

    Y. Arai, M. Hazumi, Y. Ikegami, T. Kohriki, O. Tajima, S. Terada, T. Tsuboyama, Y. Unno, H. Ushiroda, H. Ikeda, K. Hara, H. Ishino, T. Kawasaki, E. Martin, G. Varner, H. Tajima, M. Ohno, K. Fukuda, H. Komatsubara, J. Ida, H. Hayashi

    2006 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD, VOL 1-6   1440 - 1444   2006年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:IEEE  

    We describe a new pixel detector development project using a 0.15 mu m fully-depleted CMOS SOI (Silicon-On-Insulator) technology. Additional processing steps for creating substrate implants and contacts to form sensor and electrode connections were developed for this SOI process. A diode Test Element Group and several test chips have been fabricated and evaluated. The pixel detectors are successfully operated and first images are taken and sensibility to beta-rays is confirmed. Back gate effects on the top circuits are observed and discussed.

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  • Solar neutrino measurements in Super-Kamiokande-I 査読

    J. Hosaka, K. Ishihara, J. Kameda, Y. Koshio, A. Minamino, C. Mitsuda, M. Miura, S. Moriyama, M. Nakahata, T. Namba, Y. Obayashi, N. Sakurai, A. Sarrat, M. Shiozawa, Y. Suzuki, Y. Takeuchi, S. Yamada, I. Higuchi, M. Ishitsuka, T. Kajita, K. Kaneyuki, G. Mitsuka, S. Nakayama, H. Nishino, A. Okada, K. Okumura, C. Saji, Y. Takenaga, S. Clark, S. Desai, E. Kearns, S. Likhoded, J. L. Stone, L. R. Sulak, W. Wang, M. Goldhaber, D. Casper, J. P. Cravens, W. R. Kropp, D. W. Liu, S. Mine, M. B. Smy, H. W. Sobel, C. W. Sterner, M. R. Vagins, K. S. Ganezer, J. Hill, W. E. Keig, J. S. Jang, J. Y. Kim, I. T. Lim, K. Scholberg, C. W. Walter, R. W. Ellsworth, S. Tasaka, G. Guillian, A. Kibayashi, J. G. Learned, S. Matsuno, M. D. Messier, Y. Hayato, A. K. Ichikawa, T. Ishida, T. Ishii, T. Iwashita, T. Kobayashi, T. Nakadaira, K. Nakamura, K. Nitta, Y. Oyama, Y. Totsuka, A. T. Suzuki, M. Hasegawa, I. Kato, H. Maesaka, T. Nakaya, K. Nishikawa, T. Sasaki, H. Sato, S. Yamamoto, M. Yokoyama, T. J. Haines, S. Dazeley, B. K. Kim, K. B. Lee, S. Hatakeyama, R. Svoboda, E. Blaufuss, J. A. Goodman, G. W. Sullivan, D. Turcan, J. Cooley, A. Habig, Y. Fukuda, T. Sato, Y. Itow, C. K. Jung, T. Kato, K. Kobayashi, M. Malek, K. Martens, C. Mauger, C. McGrew, E. Sharkey, C. Yanagisawa, N. Tamura, M. Sakuda, Y. Kuno, M. Yoshida, S. B. Kim, J. Yoo, H. Okazawa, T. Ishizuka, Y. Choi, H. K. Seo, Y. Gando, T. Hasegawa, K. Inoue, J. Shirai, A. Suzuki, K. Nishijima, H. Ishino, Y. Watanabe, M. Koshiba, D. Kielczewska, J. Zalipska, H. G. Berns, R. Gran, K. K. Shiraishi, A. L. Stachyra, K. Washburnand, R. J. Wilkes

    Physical Review D - Particles, Fields, Gravitation and Cosmology   73 ( 11 )   2006年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    The details of Super-Kamiokande-I's solar neutrino analysis are given. Solar neutrino measurement in Super-Kamiokande is a high statistics collection of B8 solar neutrinos via neutrino-electron scattering. The analysis method and results of the 1496 day data sample are presented. The final oscillation results for the data are presented also. © 2006 The American Physical Society.

    DOI: 10.1103/PhysRevD.73.112001

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  • Solar neutrino measurements in super-Kamiokande-I 査読

    Hosaka, J., Ishihara, K., Kameda, J., Koshio, Y., Minamino, A., Mitsuda, C., Miura, M., Moriyama, S., Nakahata, M., Namba, T., Obayashi, Y., Sakurai, N., Sarrat, A., Shiozawa, M., Suzuki, Y., Takeuchi, Y., Yamada, S., Higuchi, I., Ishitsuka, M., Kajita, T., Kaneyuki, K., Mitsuka, G., Nakayama, S., Nishino, H., Okada, A., Okumura, K., Saji, C., Takenaga, Y., Clark, S., Desai, S., Kearns, E., Likhoded, S., Stone, J.L., Sulak, L.R., Wang, W., Goldhaber, M., Casper, D., Cravens, J.P., Kropp, W.R., Liu, D.W., Mine, S., Smy, M.B., Sobel, H.W., Sterner, C.W., Vagins, M.R., Ganezer, K.S., Hill, J., Keig, W.E., Jang, J.S., Kim, J.Y., Lim, I.T., Scholberg, K., Walter, C.W., Ellsworth, R.W., Tasaka, S., Guillian, G., Kibayashi, A., Learned, J.G., Matsuno, S., Messier, M.D., Hayato, Y., Ichikawa, A.K., Ishida, T., Ishii, T., Iwashita, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nitta, K., Oyama, Y., Totsuka, Y., Suzuki, A.T., Hasegawa, M., Kato, I., Maesaka, H., Nakaya, T., Nishikawa, K., Sasaki, T., Sato, H., Yamamoto, S., Yokoyama, M., Haines, T.J., Dazeley, S., Kim, B.K, Lee, K.B, Hatakeyama, S., Svoboda, R., Blaufuss, E., Goodman, J.A., Sullivan, G.W., Turcan, D., Cooley, J., Habig, A., Fukuda, Y., Sato, T., Itow, Y., Jung, C.K., Kato, T., Kobayashi, K., Malek, M., Martens, K., Mauger, C., McGrew, C., Sharkey, E., Yanagisawa, C., Tamura, N., Sakuda, M., Kuno, Y., Yoshida, M., Kim, S.B., Yoo, J., Okazawa, H., Ishizuka, T., Choi, Y., Seo, H.K., Gando, Y., Hasegawa, T., Inoue, K., Shirai, J., Suzuki, A., Nishijima, K., Ishino, H., Watanabe, Y., Koshiba, M., Kielczewska, D., Zalipska, J., Berns, H.G., Gran, R., Shiraishi, K.K., Stachyra, A.L., Washburn, K., Wilkes, R.J.

    Phys.Rev.D   73 ( 112001 )   112001 - 112001   2006年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.73.112001

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  • A Measurement of atmospheric neutrino flux consistent with tau neutrino appearance 査読

    Abe, K., Hayato, Y., Iida, T., Ishihara, K., Kameda, J., Koshio, Y., Minamino, A., Mitsuda, C., Miura, M., Moriyama, S., Nakahata, M., Obayashi, Y., Ogawa, H., Shiozawa, M., Suzuki, Y., Takeda, A., Takeuchi, Y., Ueshima, K., Higuchi, I., Ishihara, C., Ishitsuka, M., Kajita, T., Kaneyuki, K., Mitsuka, G., Nakayama, S., Nishino, H., Okumura, K., Saji, C., Takenaga, Y., Totsuka, Y., Clark, S., Desai, S., Dufour, F., Kearns, E., Likhoded, S., Litos, M., Raaf, J.L., Stone, J.L., Sulak, L.R., Wang, W., Goldhaber, M., Casper, D., Cravens, J.P., Kropp, W.R., Liu, D.W., Mine, S., Regis, C., Smy, M.B., Sobel, H.W., Vagins, M.R., Ganezer, K.S., Hill, J.E., Keig, W.E., Jang, J.S., Kim, J.Y., Lim, I.T., Scholberg, K., Tanimoto, N., Walter, C.W., Wendell, R., Ellsworth, R.W., Tasaka, S., Guillian, E., Learned, J.G., Matsuno, S., Messier, M.D., Ichikawa, A.K., Ishida, T., Ishii, T., Iwashita, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nitta, K., Oyama, Y., Suzuki, A.T., Hasegawa, M., Kato, I., Maesaka, H., Nakaya, T., Nishikawa, K., Sasaki, T., Sato, H., Yamamoto, S., Yokoyama, M., Haines, T.J., Dazeley, S., Hatakeyama, S., Svoboda, R., Sullivan, G.W., Habig, A., Gran, R., Fukuda, Y., Sato, T., Itow, Y., Koike, T., Jung, C.K., Kato, T., Kobayashi, K., Malek, M., McGrew, C., Sarrat, A., Terri, R., Yanagisawa, C., Tamura, N., Sakuda, M., Sugihara, M., Kuno, Y., Yoshida, M., Kim, S.B., Yoo, J., Ishizuka, T., Okazawa, H., Choi, Y., Seo, H.K., Gando, Y., Hasegawa, T., Inoue, K., Ishii, H., Nishijima, K., Ishino, H., Watanabe, Y., Koshiba, M., Kielczewska, D., Zalipska, J., Berns, H.G., Shiraishi, K.K., Washburn, K., Wilkes, R.J.

    Phys.Rev.Lett.   97 ( 171801 )   171801 - 171801   2006年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevLett.97.171801

    Web of Science

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  • Three flavor neutrino oscillation analysis of atmospheric neutrinos in Super-Kamiokande 査読

    Hosaka, J., Ishihara, K., Kameda, J., Koshio, Y., Minamino, A., Mitsuda, C., Miura, M., Moriyama, S., Nakahata, M., Namba, T., Obayashi, Y., Shiozawa, M., Suzuki, Y., Takeda, A., Takeuchi, Y., Yamada, S., Higuchi, I., Ishitsuka, M., Kajita, T., Kaneyuki, K., Mitsuka, G., Nakayama, S., Nishino, H., Okada, A., Okumura, K., Saji, C., Takenaga, Y., Clark, S., Desai, S., Kearns, E., Likhoded, S., Stone, J.L., Sulak, L.R., Wang, W., Goldhaber, M., Casper, D., Cravens, J.P., Kropp, W.R., Liu, D.W., Mine, S., Regis, C., Smy, M.B., Sobel, H.W., Sterner, C.W., Vagins, M.R., Ganezer, K.S., Hill, J.E., Keig, W.E., Jang, J.S., Kim, J.Y., Lim, I.T., Scholberg, K., Walter, C.W., Ellsworth, R.W., Tasaka, S., Guillian, E., Kibayashi, A., Learned, J.G., Matsuno, S., Messier, M.D., Hayato, Y., Ichikawa, A.K., Ishida, T., Ishii, T., Iwashita, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nitta, K., Oyama, Y., Totsuka, Y., Suzuki, A.T., Hasegawa, M., Kato, I., Maesaka, H., Nakaya, T., Nishikawa, K., Sasaki, T., Sato, H., Yamamoto, S., Yokoyama, M., Haines, T.J., Dazeley, S., Hatakeyama, S., Svoboda, R., Blaufuss, E., Goodman, J.A., Sullivan, G.W., Turcan, D., Cooley, J., Habig, A., Fukuda, Y., Sato, T., Itow, Y., Jung, C.K., Kato, T., Kobayashi, K., Malek, M., Mauger, C., McGrew, C., Sarrat, A., Yanagisawa, C., Tamura, N., Sakuda, M., Kuno, Y., Yoshida, M., Kim, S.B., Yoo, J., Ishizuka, T., Okazawa, H., Choi, Y., Seo, H.K., Gando, Y., Hasegawa, T., Inoue, K., Shirai, J., Suzuki, A., Nishijima, K., Ishino, H., Watanabe, Y., Koshiba, M., Kielczewska, D., Zalipska, J., Berns, H.G., Gran, R., Shiraishi, K.K., Stachyra, A., Washburn, K., Wilkes, R.J.

    Phys.Rev.D   74 ( 032002 )   032002 - 032002   2006年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.74.032002

    arXiv

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  • Measurement of Neutrino Oscillation by the K2K Experiment 査読

    Ahn, M.H., Aliu, E., Andringa, S., Aoki, S., Aoyama, Y., Argyriades, J., Asakura, K., Ashie, R., Berghaus, F., Berns, H.G., Bhang, H., Blondel, A., Borghi, S., Bouchez, J., Boyd, S.C., Burguet-Castell, J., Casper, D., Catala, J., Cavata, C., Cervera, A., Chen, S.M., Cho, K.O., Choi, J.H., Dore, U., Echigo, S., Espinal, X., Fechner, M., Fernandez, E., Fujii, K., Fujii, Y., Fukuda, S., Fukuda, Y., Gomez-Cadenas, J., Gran, R., Hara, T., Hasegawa, M., Hasegawa, T., Hayashi, K., Hayato, Y., Helmer, R.L., Higuchi, I., Hill, J., Hiraide, K., Hirose, E., Hosaka, J., Ichikawa, A.K., Ieiri, M., Iinuma, M., Ikeda, A., Inagaki, T., Ishida, T., Ishihara, K., Ishii, H., Ishii, T., Ishino, H., Ishitsuka, M., Itow, Y., Iwashita, T., Jang, H.I., Jang, J.S., Jeon, E.J., Jeong, I.S., Joo, K.K., Jover, G., Jung, C.K., Kajita, T., Kameda, J., Kaneyuki, K., Kang, B.H., Kato, I., Kato, Y., Kearns, E., Kerr, D., Kim, C.O., Khabibullin, M., Khotjantsev, A., Kielczewska, D., Kim, B.J., Kim, H.I., Kim, J.H., Kim, J.Y., Kim, S.B., Kitamura, M., Kitching, P., Kobayashi, K., Kobayashi, T., Kohama, M., Konaka, A., Koshio, Y., Kropp, W., Kubota, J., Kudenko, Yu., Kume, G., Kuno, Y., Kurimoto, Y., Kutter, T., Learned, J., Likhoded, S., Lim, I.T., Lim, S.H., Loverre, P.F., Ludovici, L., Maesaka, H., Mallet, J., Mariani, C., Martens, K., Maruyama, T., Matsuno, S., Matveev, V., Mauger, C., McConnel Mahn, K.B., McGrew, C., Mikheyev, S., Minakawa, M., Minamino, A., Mine, S., Mineev, O., Mitsuda, C., Mitsuka, G., Miura, M., Moriguchi, Y., Morita, T., Moriyama, S., Nakadaira, T., Nakahata, M., Nakamura, K., Nakano, I., Nakata, F., Nakaya, T., Nakayama, S., Namba, T., Nambu, R., Nawang, S., Nishikawa, K., Nishino, H., Nishiyama, S., Nitta, K., Noda, S., Noumi, H., Nova, F., Novella, P., Obayashi, Y., Okada, A., Okumura, K., Okumura, M., Onchi, M., Ooyabu, T., Oser, S.M., Otaki, T., Oyama, Y., Pac, M.Y., Park, H., Pierre, F., Rodriguez, A., Saji, C., Sakai, A., Sakuda, M., Sakurai, N., Sanchez, F., Sarrat, A., Sasaki, T., Sato, H., Sato, K., Scholberg, K., Schroeter, R., Sekiguchi, M., Seo, E., Sharkey, E., Shima, A., Shiozawa, M., Shiraishi, K., Sitjes, G., Smy, M., So, H., Sobel, H., Sorel, M., Stone, J., Sulak, L., Suga, Y., Suzuki, A., Suzuki, Y., Suzuki, Y., Tada, M., Takahashi, T., Takasaki, M., Takatsuki, M., Takenaga, Y., Takenaka, K., Takeuchi, H., Takeuchi, Y., Taki, K., Takubo, Y., Tamura, N., Tanaka, H., Tanaka, K., Tanaka, M., Tanaka, Y., Tashiro, K., Terri, R., T'Jampens, S., Tornero-Lopez, A., Toshito, T., Totsuka, Y., Ueda, S., Vagins, M., Whitehead, L., Walter, C.W., Wang, W., Wilkes, R.J., Yamada, S., Yamada, Y., Yamamoto, S., Yamanoi, Y., Yanagisawa, C., Yershov, N., Yokoyama, H., Yokoyama, M., Yoo, J., Yoshida, M., Zalipska, J.

    Phys.Rev.D   74 ( 072003 )   072003 - 072003   2006年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.74.072003

    arXiv

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  • Search for Diffuse Astrophysical Neutrino Flux Using Ultrahigh Energy Upward-Going Muons in Super-Kamiokande I 査読

    Swanson, Molly E.C., Abe, K., Hosaka, J., Iida, T., Ishihara, K., Kameda, J., Koshio, Y., Minamino, A., Mitsuda, C., Miura, M., Moriyama, S., Nakahata, M., Obayashi, Y., Agawa, H., Shiozawa, M., Suzuki, Y., Takeda, A., Takeuchi, Y., Ueshima, K., Higuchi, I., Ishitsuka, M., Ishitusuka, M., Kajita, T., Kaneyuki, K., Mitsuka, G., Nakayama, S., Nishino, H., Okada, A., Okumura, K., Saji, C., Takenaga, Y., Clark, S., Desai, S., Dufour, F., Kearns, E., Likhoded, S., Litos, M., Raaf, J.L., Stone, J.L., Sulak, L.R., Wang, W., Goldhaber, M., Casper, D., Cravens, J.P., Dunmore, J., Kropp, W.R., Liu, D.W., Mine, S., Regis, C., Smy, M.B., Sobel, H.W., Vagins, M.R., Ganezer, K.S., Hill, J.E., Keig, W.E., Jang, J.S., Kim, J.Y., Lim, I.T., Scholberg, K., Tanimoto, N., Walter, C.W., Wendell, R., Ellsworth, R.W., Tasaka, S., Guillian, E., Kibayashi, A., Learned, J.G., Matsuno, S., Messier, M.D., Hayato, Y., Ichikawa, A.K., Ishida, T., Ishii, T., Iwashita, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nitta, K., Oyama, Y., Totsuka, Y., Suzuki, A.T., Hasegawa, M., Hiraide, K., Kato, I., Maesaka, H., Nakaya, T., Nishikawa, K., Sasaki, T., Sato, H., Yamamoto, S., Yokoyama, M., Haines, T.J., Dazeley, S., Hatakeyama, S., Svoboda, R., Sullivan, G.W., Turcan, D., Cooley, J., McConnel Mahn, Kendall Brianna, Habig, A., Fukuda, Y., Sato, T., Itow, Y., Koike, T., Jung, C.K., Kato, T., Kobayashi, K., Malek, M., McGrew, C., Sarrat, A., Terri, R., Yanagisawa, C., Tamura, N., Sakuda, M., Sugihara, M., Kuno, Y., Yoshida, M., Kim, S.B., Yang, B.S., Yoo, J., Ishizuka, T., Okazawa, H., Choi, Y., Seo, H.K., Gando, Y., Hasegawa, T., Inoue, K., Ishi, H., Nishijima, K., Ishino, H., Watanabe, Y., Koshiba, M., Kielczewska, D., Zalipska, J., Berns, H.G., Gran, R., Shiraishi, K.K., Stachyra, A., Thrane, E., Washburn, K., Wilkes, R.J.

    Astrophys.J.   652   206 - 215   2006年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1086/507983

    arXiv

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  • Measurements of B decays to two kaons 査読

    K Abe, Adachi, I, H Aihara, Y Asano, Aulchenko, V, T Aushev, AM Bakich, Balagura, V, S Banerjee, E Barberio, M Barbero, A Bay, Bedny, I, U Bitenc, Bizjak, I, S Blyth, A Bondar, A Bozek, M Bracko, J Brodzicka, TE Browder, P Chang, Y Chao, A Chen, KF Chen, WT Chen, BG Cheon, R Chistov, SK Choi, Y Choi, A Chuvikov, S Cole, J Dalseno, M Danilov, M Dash, LY Dong, J Dragic, A Drutskoy, S Eidelman, Y Enari, S Fratina, N Gabyshev, T Gershon, A Go, G Gokhroo, B Golob, A Gorisek, J Haba, T Hara, NC Hastings, K Hayasaka, H Hayashii, M Hazumi, L Hinz, T Hokuue, Y Hoshi, S Hou, WS Hou, YB Hsiung, T Iijima, K Ikado, A Imoto, A Ishikawa, H Ishino, R Itoh, M Iwasaki, Y Iwasaki, JH Kang, JS Kang, SU Kataoka, N Katayama, H Kawai, T Kawasaki, HR Khan, H Kichimi, JH Kim, SK Kim, SM Kim, K Kinoshita, S Korpar, P Krizan, P Krokovny, CC Kuo, A Kuzmin, YJ Kwon, SE Lee, T Lesiak, J Li, SW Lin, D Liventsev, G Majumder, F Mandl, T Matsumoto, A Matyja, W Mitaroff, H Miyake, H Miyata, Y Miyazaki, R Mizuk, D Mohapatra, GR Moloney, Y Nagasaka, E Nakano, M Nakao, Z Natkaniec, S Nishida, O Nitoh, S Noguchi, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, Y Onuki, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, CW Park, N Parslow, LS Peak, R Pestotnik, LE Piilonen, M Rozanska, Y Sakai, N Sato, N Satoyama, K Sayeed, T Schietinger, O Schneider, AJ Schwartz, ME Sevior, H Shibuya, Sidorov, V, A Somov, N Soni, S Stanic, M Staric, K Sumisawa, T Sumiyoshi, S Suzuki, O Tajima, F Takasaki, K Tamai, N Tamura, M Tanaka, GN Taylor, Y Teramoto, XC Tian, K Trabelsi, T Tsuboyama, T Tsukamoto, S Uehara, T Uglov, Y Unno, S Uno, P Urquijo, Y Ushiroda, G Varner, CH Wang, MZ Wang, Y Watanabe, E Won, QL Xie, BD Yabsley, A Yamaguchi, Y Yamashita, M Yamauchi, J Ying, SL Zang, J Zhang, LM Zhang, ZP Zhang, Zhilich, V, D Zurcher

    PHYSICAL REVIEW LETTERS   95 ( 23 )   1 - 5   2005年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report measurements of B meson decays to two kaons using 253 fb(-1) of data collected with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. We find evidence for signals in B+-&gt;(K) over bar K-0(+) and B-0-&gt; K-0(K) over bar (0) with significances of 3.0 sigma and 3.5 sigma, respectively. (Charge-conjugate modes are included.) The corresponding branching fractions are measured to be B(B+-&gt;(K) over bar K-0(+))=(1.0 +/- 0.4 +/- 0.1)x10(-6) and B(B-0-&gt; K-0(K) over bar (0))=(0.8 +/- 0.3 +/- 0.1)x10(-6). These decay modes are examples of hadronic b -&gt; d transitions. No signal is observed in the decay B-0-&gt; K+K-, and we set an upper limit of 3.7x10(-7) at 90% confidence level.

    DOI: 10.1103/PhysRevLett.95.231802

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  • Improved measurement of the electroweak penguin process B -&gt; X(s)l(+)l(-) 査読

    M Iwasaki, K Itoh, H Aihara, K Abe, K Abe, Adachi, I, Y Asano, T Aushev, S Bahinipati, AM Bakich, S Banerjee, Bedny, I, U Bitenc, Bizjak, I, S Blyth, A Bondar, A Bozek, M Bracko, J Brodzicka, TE Browder, MC Chang, P Chang, Y Chao, A Chen, KF Chen, WT Chen, BG Cheon, R Chistov, SK Choi, Y Choi, A Chuvikov, J Dalseno, M Danilov, M Dash, A Drutskoy, S Eidelman, Y Enari, S Fratina, N Gabyshev, T Gershon, G Gokhroo, B Golob, A Gorisek, J Haba, T Hara, NC Hastings, K Hayasaka, H Hayashii, M Hazumi, T Hokuue, Y Hoshi, S Hou, WS Hou, YB Hsiung, T Iijima, A Imoto, K Inami, A Ishikawa, H Ishino, R Itoh, JH Kang, JS Kang, N Katayama, H Kawai, T Kawasaki, HR Khan, H Kichimi, HJ Kim, SK Kim, SM Kim, K Kinoshita, P Krizan, P Krokovny, R Kulasiri, S Kumar, CC Kuo, A Kuzmin, YJ Kwon, JS Lange, G Leder, SE Lee, T Lesiak, J Li, SW Lin, D Liventsev, J MacNaughton, G Majumder, F Mandl, T Matsumoto, A Matyja, Y Mikami, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, R Mizuk, D Mohapatra, GR Moloney, T Nagamine, Y Nagasaka, Nakamura, I, E Nakano, M Nakao, H Nakazawa, Z Natkaniec, S Nishida, O Nitoh, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, W Ostrowicz, H Ozaki, H Palka, CW Park, H Park, N Parslow, LS Peak, R Pestotnik, LE Piilonen, N Root, M Rozanska, H Sagawa, Y Sakai, N Sato, T Schietinger, O Schneider, P Schonmeier, J Schumann, C Schwanda, AJ Schwartz, ME Sevior, H Shibuya, B Shwartz, Sidorov, V, JB Singh, A Somov, N Soni, R Stamen, S Stanic, M Staric, K Sumisawa, T Sumiyoshi, S Suzuki, SY Suzuki, O Tajima, F Takasaki, K Tamai, N Tamura, M Tanaka, GN Taylor, Y Teramoto, XC Tian, T Tsukamoto, S Uehara, T Uglov, K Ueno, S Uno, P Urquijo, Y Ushiroda, G Varner, KE Varvell, S Villa, CC Wang, CH Wang, MZ Wang, Y Watanabe, QL Xie, BD Yabsley, A Yamaguchi, Y Yamashita, M Yamauchi, H Yang, J Ying, LM Zhang, ZP Zhang, Zhilich, V, D Zontar, D Zurcher

    PHYSICAL REVIEW D   72 ( 9 )   1 - 10   2005年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present an improved measurement of the branching fraction for the electroweak penguin process B -&gt; X-sl(l)+(-), where l is an electron or a muon and X-s is a hadronic system containing an s-quark. The measurement is based on a sample of 152x10(6) Upsilon(4S)-&gt; B (B) over bar events collected with the Belle detector at the KEKB energy asymmetric e(+)e(-) collider. The X-s hadronic system is reconstructed from one K+/- or K-S(0) and up to four pions, where at most one pion can be neutral. Averaging over both lepton flavors, the inclusive branching fraction is measured to be B(B -&gt; X-sl(l)+(-))=(4.11 +/- 0.83(stat)(-0.81)(+0.85)(syst))x10(-6) for M-l(l)+(-)&gt; 0.2 GeV/c(2).

    DOI: 10.1103/PhysRevD.72.092005

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  • The improved ladder production for the Belle silicon vertex detector (SVD2.1) 査読

    T Ziegler, H Aihara, Y Asano, T Aso, A Bakich, M Barbero, T Browder, MC Chang, Y Chao, KF Chen, S Chidzik, A Chouvikov, J Dalseno, R Dowd, R Fernholz, S Fratina, M Friedl, H Fujii, Y Fujiyama, J Haba, K Hara, T Hara, B Harrop, T Haruyama, K Hayashi, M Hazumi, D Heffernan, T Higuchi, A Igarashi, Y Igarashi, H Ikeda, H Ishino, S Iwaida, T Kameshima, P Kapusta, K Kasami, T Kawasaki, A Kibayashi, S Koike, S Korpar, P Krizan, H Kurashiro, A Kusaka, T Lesiak, D Marlow, H Matsumoto, Y Mikami, H Miyake, GR Moloney, Z Natkaniec, S Nozaki, R Ohkubo, S Okuno, S Ono, Y Onuki, W Ostrowicz, H Ozaki, L Peak, M Pernicka, M Rosen, M Rozanska, N Sato, S Schmid, J Schumann, T Shibata, R Stamen, S Stanic, H Steininger, K Sumisawa, J Suzuki, H Tajima, O Tajima, K Takahashi, F Takasaki, N Tamura, M Tanaka, GN Taylor, K Trabelsi, T Tsuboyama, K Uchida, K Ueno, K Ueno, Y Ushiroda, S Vahsen, G Varner, K Varvell, YS Velikzhanin, CC Wang, MZ Wang, M Watanabe, Y Watanabe, H Yamamoto, Y Yamashita, M Yamauchi, R Yang, Y Yasu, D Zontar

    IEEE TRANSACTIONS ON NUCLEAR SCIENCE   52 ( 5 )   1907 - 1911   2005年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC  

    In autumn :2003, data taking with the new silicon vertex detector SVD2.0 in Belle started at the KEK-B energy-asymmetric e(+)e(-) collider in Tsukuba, Japan. The detector works as expected, however, it was decided to produce replacement ladders for the inner two layers of the vertex detector which are most exposed to the high radiation dose from the beam. The new ladders do not merely reproduce the existing design but include some significant improvements. The readout electronics is implemented on a hybrid board with a new heat transfer scheme in order to dissipate the heat produced in the front-end readout chip. The flex circuits that connect the double-sided silicon sensors (DSSDs) with the hybrid boards were redesigned using a 2-layer technique which improved the production quality and lowered their costs significantly. Production and testing will be finished in summer 2005 and will provide Belle with spare ladders as well as new expertise for possible future projects for example the high luminosity B-factory.

    DOI: 10.1109/TNS.2005.856626

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  • Time-dependent C P violation effects in partially reconstructed B-0 -&gt; D-*-/+pi(+/-) decays 査読

    T Gershon, K Abe, K Abe, Adachi, I, H Aihara, Y Asano, T Aushev, S Bahinipati, AM Bakich, S Banerjee, A Bay, Bedny, I, U Bitenc, Bizjak, I, S Blyth, A Bondar, A Bozek, M Bracko, J Brodzicka, TE Browder, MC Chang, P Chang, Y Chao, A Chen, WT Chen, BG Cheon, SK Choi, Y Choi, A Chuvikov, S Cole, J Dalseno, M Danilov, M Dash, J Dragic, S Eidelman, S Fratina, N Gabyshev, A Garmash, G Gokhroo, B Golob, A Gorisek, J Haba, K Hara, NC Hastings, K Hayasaka, H Hayashii, M Hazumi, L Hinz, T Hokuue, Y Hoshi, S Hou, WS Hou, T Iijima, A Imoto, K Inami, A Ishikawa, H Ishino, R Itoh, M Iwasaki, Y Iwasaki, JH Kang, JS Kang, P Kapusta, N Katayama, H Kawai, T Kawasaki, N Kent, HR Khan, H Kichimi, HJ Kim, SM Kim, K Kinoshita, P Krokovny, S Kumar, CC Kuo, A Kuzmin, YJ Kwon, G Leder, T Lesiak, J Li, A Limosani, SW Lin, D Liventsev, J MacNaughton, G Majumder, F Mandl, D Marlow, T Matsumoto, Y Mikami, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, D Mohapatra, GR Moloney, T Nagamine, E Nakano, M Nakao, H Nakazawa, S Nishida, O Nitoh, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, W Ostrowicz, P Pakhlov, H Palka, CW Park, N Parslow, LS Peak, R Pestotnik, LE Piilonen, A Poluektov, FJ Ronga, H Sagawa, Y Sakai, TR Sarangi, N Sato, T Schietinger, O Schneider, C Schwanda, AJ Schwartz, K Senyo, ME Sevior, T Shibata, H Shibuya, JB Singh, A Somov, R Stamen, S Stanic, M Staric, K Sumisawa, T Sumiyoshi, S Suzuki, O Tajima, F Takasaki, K Tamai, N Tamura, M Tanaka, Y Teramoto, XC Tian, K Trabelsi, T Tsuboyama, T Tsukamoto, S Uehara, T Uglov, S Uno, P Urquijo, Y Ushiroda, G Varner, KE Varvell, S Villa, CC Wang, CH Wang, M Watanabe, QL Xie, BD Yabley, A Yamaguchi, H Yamamoto, Y Yamashita, M Yamauchi, HY Yang, J Ying, J Zhang, LM Zhang, ZP Zhang, D Zontar

    PHYSICS LETTERS B   624 ( 1-2 )   11 - 21   2005年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

    We report measurements of time-dependent decay rates for B-0-&gt; D*(-/+)pi(+/-) decays and extraction of CP violation parameters related to phi(3). We use a partial reconstruction technique, whereby signal events are identified using information only from the primary pion and the charged pion from the decay of the D*(-/+). The analysis uses 140 fb(-1) of data accumulated at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We measure the CP violation parameters S+ = 0.035 +/- 0.041 (stat) +/- 0.018 (syst) and S- = 0.025 +/- 0.041 (stat) +/- 0.018 (syst). (c) 2005 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.physletb.2005.07.020

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  • Measurements of the branching fraction and polarization in B+->rho K-+(*0) decays 査読

    J Zhang, K Abe, Adachi, I, H Aihara, K Arinstein, Y Asano, T Aushev, T Aziz, S Bahinipati, AM Bakich, E Barberio, U Bitenc, Bizjak, I, S Blyth, A Bondar, A Bozek, J Brodzicka, TE Browder, P Chang, A Chen, KF Chen, WT Chen, BG Cheon, R Chistov, SK Choi, Y Choi, YK Choi, A Chuvikov, S Cole, J Dalseno, M Danilov, M Dash, J Dragic, S Eidelman, F Fang, S Fratina, N Gabyshev, T Gershon, G Gokhroo, B Golob, A Gorisek, T Hara, M Hazumi, L Hinz, T Hokuue, Y Hoshi, S Hou, WS Hou, T Iijima, A Imoto, A Ishikawa, H Ishino, R Itoh, M Iwasaki, JH Kang, JS Kang, SU Kataoka, H Kawai, T Kawasaki, HR Khan, H Kichimi, HJ Kim, SK Kim, SM Kim, K Kinoshita, S Korpar, P Krokovny, CC Kuo, YJ Kwon, G Leder, T Lesiak, J Li, A Limosani, SW Lin, J MacNaughton, F Mandl, T Matsumoto, A Matyja, Y Mikami, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, R Mizuk, GR Moloney, T Nagamine, Y Nagasaka, E Nakano, M Nakao, H Nakazawa, Z Natkaniec, S Nishida, O Nitoh, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, Y Onuki, W Ostrowicz, H Ozaki, CW Park, LS Peak, R Pestotnik, LE Piilonen, H Sagawa, Y Sakai, TR Sarangi, T Schietinger, O Schneider, AJ Schwartz, ME Sevior, H Shibuya, A Somov, R Stamen, S Stanic, M Staric, T Sumiyoshi, S Suzuki, O Tajima, F Takasaki, M Tanaka, Y Teramoto, XC Tian, T Tsuboyama, T Tsukamoto, S Uehara, T Uglov, K Ueno, S Uno, P Urquijo, G Varner, KE Varvell, S Villa, CC Wang, CH Wang, MZ Wang, Y Watanabe, QL Xie, BD Yabsley, A Yamaguchi, Y Yamashita, H Yang, J Ying, LM Zhang, ZP Zhang, D Zontar

    PHYSICAL REVIEW LETTERS   95 ( 14 )   1 - 5   2005年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present the results of a study of the charmless vector-vector decay B+->rho K-+(*0), based on 253 fb(-1) of data collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We obtain the branching fraction B(B+->rho K-+(*0))=[8.9 +/- 1.7(stat)+/- 1.2(syst)]x10(-6). We also perform a helicity analysis of the rho and K-* vector mesons, and obtain the longitudinal polarization fraction f(L)(B+->rho K-+(*0))=0.43 +/- 0.11(stat)(-0.02)(+0.05)(syst).

    DOI: 10.1103/PhysRevLett.95.141801

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  • Improved evidence for direct CP violation in B0 -&gt;pi(+)pi(-) decays and model-independent constraints on phi(2) 査読

    K Abe, Adachi, I, H Aihara, K Arinstein, Y Asano, T Aushev, AM Bakich, Y Ban, E Barberio, M Barbero, A Bay, U Bitenc, Bizjak, I, S Blyth, A Bondar, A Bozek, M Bracko, J Brodzicka, TE Browder, P Chang, Y Chao, A Chen, KF Chen, WT Chen, BG Cheon, R Chistov, SK Choi, Y Choi, YK Choi, A Chuvikov, S Cole, J Dalseno, M Dash, LY Dong, A Drutskoy, S Eidelman, Y Enari, F Fang, S Fratina, N Gabyshev, A Garmash, T Gershon, G Gokhroo, B Golob, A Gorisek, J Haba, K Hara, T Hara, NC Hastings, H Hayashii, M Hazumi, L Hinz, T Hokuue, Y Hoshi, S Hou, WS Hou, YB Hsiung, T Iijima, A Imoto, K Inami, A Ishikawa, H Ishino, R Itoh, M Iwasaki, Y Iwasaki, H Kakuno, JH Kang, JS Kang, P Kapusta, N Katayama, H Kawai, T Kawasaki, HR Khan, A Kibayashi, H Kichimi, SM Kim, K Kinoshita, S Korpar, P Krizan, P Krokovny, S Kumar, CC Kuo, A Kusaka, A Kuzmin, YJ Kwon, G Leder, SE Lee, T Lesiak, J Li, SW Lin, J MacNaughton, G Majumder, F Mandl, D Marlow, A Matyja, Y Mikami, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, R Mizuk, D Mohapatra, A Murakami, T Nagamine, Y Nagasaka, Nakamura, I, E Nakano, M Nakao, H Nakazawa, Z Natkaniec, S Nishida, O Nitoh, S Noguchi, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, Y Onuki, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, H Park, N Parslow, LS Peak, R Pestotnik, LE Piilonen, FJ Ronga, M Rozanska, H Sagawa, Y Sakai, N Sato, T Schietinger, O Schneider, P Schonmeier, J Schumann, AJ Schwartz, K Senyo, ME Sevior, H Shibuya, B Shwartz, Sidorov, V, JB Singh, A Somov, N Soni, R Stamen, S Stanic, M Staric, K Sumisawa, T Sumiyoshi, S Suzuki, SY Suzuki, O Tajima, F Takasaki, K Tamai, N Tamura, M Tanaka, Y Teramoto, XC Tian, K Trabelsi, T Tsuboyama, T Tsukamoto, S Uehara, T Uglov, K Ueno, Y Unno, S Uno, P Urquijo, Y Ushiroda, G Varner, KE Varvell, S Villa, CC Wang, CH Wang, MZ Wang, Y Watanabe, QL Xie, BD Yabsley, A Yamaguchi, Y Yamashita, M Yamauchi, HY Yang, J Zhang, LM Zhang, ZP Zhang, Zhilich, V, D Zontar, D Zurcher

    PHYSICAL REVIEW LETTERS   95 ( 10 )   1 - 6   2005年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present a new measurement of the time-dependent CP-violating parameters in B-0 -&gt;pi(+)pi(-) decays with 275x10(6) B (B) over bar pairs collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider operating at the Upsilon(4S) resonance. We find 666 +/- 43 B-0 -&gt;pi(+)pi(-) events and measure the CP-violating parameters: S-pi pi=-0.67 +/- 0.16(stat)+/- 0.06(syst) and A(pi pi)=+0.56 +/- 0.12(stat)+/- 0.06(syst). We find evidence for large direct CP violation with a significance greater than 4 standard deviations for any S-pi pi value. Using isospin relations, we obtain 95.4% confidence intervals for the Cabibbo-Kobayashi-Maskawa quark-mixing matrix angle phi(2) of 0 degrees &lt;phi(2)&lt; 19 degrees and 71 degrees &lt;phi(2)&lt; 180 degrees.

    DOI: 10.1103/PhysRevLett.95.101801

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  • The Belle Silicon Vertex Detector 査読

    H Ishino

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   549 ( 1-3 )   16 - 19   2005年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

    The Belle Silicon Vertex Detector (SVD) was designed to measure B meson decay positions precisely for studies of time-dependent CP violation. Although the first version of SVD (SVD1) worked for 4years from 1999 with excellent performance, its insufficient radiation hardness drove us to build a second generation SVD (SVD2). The SVD2 was installed in Belle in the summer of 2003 and has been working well. The strip yield is estimated to be more than 95%. The signal-to-noise ratios are obtained to be 18-36, depending on detector ladders. The intrinsic spatial resolutions are obtained to be 12.0 +/- 0.4 and 22.3 +/- 0.8 mu m for phi- and z-sides, where z-side measures positions along the beam direction and 0 side is used for the azimuthal angle measurement. In this letter, an overview and performance results are provided for both generations of the Belle SVD. (c) 2005 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.nima.2005.04.018

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  • Measurement of time-dependent CP-Violating asymmetries in B-0 -&gt;(KsKsKs0)-K-0-K-0 decay 査読

    K Sumisawa, Y Ushiroda, M Hazumi, K Abe, K Abe, Adachi, I, H Aihara, Y Asano, Aulchenko, V, T Aushev, AM Bakich, U Bitenc, Bizjak, I, S Blyth, A Bondar, A Bozek, M Bracko, J Brodzicka, TE Browder, Y Chao, A Chen, KF Chen, WT Chen, BG Cheon, R Chistov, Y Choi, A Chuvikov, S Cole, J Dalseno, M Danilov, M Dash, A Drutskoy, S Eidelman, Y Enari, F Fang, S Fratina, N Gabyshev, A Garmash, T Gershon, G Gokhroo, B Golob, A Gorisek, J Haba, K Hara, T Hara, H Hayashii, T Higuchi, T Hokuue, Y Hoshi, S Hou, WS Hou, YB Hsiung, T Iijima, A Imoto, K Inami, A Ishikawa, H Ishino, R Itoh, M Iwasaki, Y Iwasaki, JH Kang, JS Kang, SU Kataoka, N Katayama, H Kawai, T Kawasaki, HR Khan, H Kichimi, HJ Kim, HO Kim, SK Kim, SM Kim, K Kinoshita, S Korpar, P Krizan, P Krokovny, R Kulasiri, S Kumar, CC Kuo, A Kusaka, A Kuzmin, YJ Kwon, JS Lange, G Leder, T Lesiak, SW Lin, F Mandl, D Marlow, T Matsumoto, A Matyja, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, R Mizuk, T Nagamine, Y Nagasaka, E Nakano, M Nakao, Z Natkaniec, S Nishida, O Nitoh, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, Y Onuki, W Ostrowicz, H Ozaki, CW Park, H Park, N Parslow, LS Peak, R Pestotnik, LE Piilonen, M Rozanska, H Sagawa, Y Sakai, TR Sarangi, N Sato, T Schietinger, O Schneider, R Seuster, ME Sevior, H Shibuya, Sidorov, V, JB Singh, A Somov, R Stamen, S Stanic, M Staric, T Sumiyoshi, S Suzuki, O Tajima, F Takasaki, K Tamai, N Tamura, M Tanaka, Y Teramoto, XC Tian, K Trabelsi, T Tsuboyama, T Tsukamoto, S Uehara, T Uglov, K Ueno, S Uno, P Urquijo, G Varner, KE Varvell, S Villa, CC Wang, CH Wang, MZ Wang, QL Xie, BD Yabsley, A Yamaguchi, H Yamamoto, Y Yamashita, M Yamauchi, HY Yang, J Zhang, LM Zhang, ZP Zhang, Zhilich, V, D Zontar

    PHYSICAL REVIEW LETTERS   95 ( 6 )   1 - 6   2005年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present a measurement of CP-violation parameters in the B-0 -&gt;(KSKSKS0)-K-0-K-0 decay based on a sample of 275x10(6) B (b) over bar pairs collected at the Y(4S) resonance with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. One neutral B meson is fully reconstructed in the decay B-0 -&gt;(KSKSKS0)-K-0-K-0, and the flavor of the accompanying B meson is identified from its decay products. CP-violation parameters are obtained from the asymmetry in the distributions of the proper-time interval between the two B decays: S = +1.26 +/- 0.68(stat) +/- 0.20(syst) and lambda = +0.54 +/- 0.34(stat) +/- 0.09(syst).

    DOI: 10.1103/PhysRevLett.95.061801

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  • Studies of CP violation in B -&gt; J/psi Kappa(*) decays 査読

    R Itoh, Y Onuki, K Abe, K Abe, Adachi, I, H Aihara, Y Asano, T Aushev, AM Bakich, Y Ban, E Barberio, A Bay, U Bitenc, Bizjak, I, S Blyth, A Bondar, A Bozek, M Bracko, J Brodzicka, TE Browder, Y Chao, A Chen, KF Chen, WT Chen, BG Cheon, R Chistov, SK Choi, Y Choi, YK Choi, A Chuvikov, S Cole, J Dalseno, M Dash, LY Dong, A Drutskoy, S Eidelman, Y Enari, F Fang, S Fratina, N Gabyshev, A Garmash, T Gershon, G Gokhroo, B Golob, A Gorisek, J Haba, K Hara, T Hara, H Hayashii, M Hazumi, T Higuchi, L Hinz, T Hokuue, Y Hoshi, S Hou, WS Hou, YB Hsiung, T Iijima, A Imoto, K Inami, A Ishikawa, H Ishino, M Iwasaki, Y Iwasaki, JH Kang, JS Kang, P Kapusta, SU Kataoka, N Katayama, H Kawai, T Kawasaki, HR Khan, H Kichimi, HJ Kim, SM Kim, K Kinoshita, S Korpar, P Krizan, P Krokovny, S Kumar, CC Kuo, A Kusaka, A Kuzmin, YJ Kwon, G Leder, SE Lee, T Lesiak, J Li, SW Lin, G Majumder, F Mandl, T Matsumoto, A Matyja, Y Mikami, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, R Mizuk, D Mohapatra, T Nagamine, E Nakano, M Nakao, H Nakazawa, Z Natkaniec, S Nishida, O Nitoh, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, H Park, N Parslow, LS Peak, R Pestotnik, LE Piilonen, A Poluektov, M Rozanska, H Sagawa, Y Sakai, N Sato, T Schietinger, O Schneider, P Schonmeier, J Schumann, AJ Schwartz, K Senyo, ME Sevior, H Shibuya, B Shwartz, Sidorov, V, JB Singh, A Somov, N Soni, R Stamen, S Stanic, M Staric, K Sumisawa, T Sumiyoshi, S Suzuki, SY Suzuki, O Tajima, F Takasaki, K Tamai, N Tamura, M Tanaka, Y Teramoto, XC Tian, K Trabelsi, T Tsuboyama, T Tsukamoto, S Uehara, T Uglov, K Ueno, Y Unno, S Uno, P Urquijo, Y Ushiroda, G Varner, KE Varvell, CC Wang, CH Wang, Y Watanabe, QL Xie, BD Yabsley, A Yamaguchi, Y Yamashita, M Yamauchi, H Yang, J Zhang, LM Zhang, ZP Zhang, Zhilich, V, D Zontar

    PHYSICAL REVIEW LETTERS   95 ( 9 )   1 - 6   2005年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    CP violation in B -&gt; J/psi K-* decays is studied using an angular analysis in a data sample of 253 fb(-1) recorded with the Belle detector at the KEKB e(+)e(-) collider. The flavor separated measurements of the decay amplitudes indicate no evidence for direct CP violation. T-odd CP violation is studied using the asymmetries in triple product correlations, and the results are consistent with the standard model null predictions. The time-dependent angular analysis gives the following values of CP-violating parameters: sin2 phi(1)=0.24 +/- 0.31 +/- 0.05 and cos2 phi(1)=0.56 +/- 0.79 +/- 0.11.

    DOI: 10.1103/PhysRevLett.95.091601

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  • Time-dependent CP-violating asymmetries in b -&gt; s(q)over-barq transitions 査読

    KF Chen, F Fang, A Garmash, K Hara, M Hazumi, T Higuchi, H Kakuno, A Kusaka, T Shibata, O Tajima, K Trabelsi, T Ziegler, K Abe, K Abe, H Aihara, Y Asano, T Aushev, S Bahinipati, AM Bakich, Y Ban, E Barberio, M Barbero, A Bay, Bedny, I, U Bitenc, Bizjak, I, S Blyth, A Bondar, A Bozek, M Bracko, J Brodzicka, TE Browder, P Chang, Y Chao, A Chen, WT Chen, BG Cheon, R Chistov, SK Choi, Y Choi, YK Choi, A Chuvikov, J Dalseno, M Danilov, M Dash, LY Dong, A Drutskoy, S Eidelman, Y Enari, S Fratina, N Gabyshev, T Gershon, G Gokhroo, B Golob, A Gorisek, J Haba, T Hara, H Hayashii, L Hinz, T Hokuue, Y Hoshi, S Hou, WS Hou, YB Hsiung, T Iijima, A Imoto, K Inami, A Ishikawa, H Ishino, R Itoh, M Iwasaki, Y Iwasaki, JH Kang, JS Kang, P Kapusta, SU Kataoka, N Katayama, H Kawai, T Kawasaki, HR Khan, H Kichimi, HJ Kim, SM Kim, K Kinoshita, S Korpar, P Krizan, P Krokovny, S Kumar, CC Kuo, A Kuzmin, YJ Kwon, G Leder, SE Lee, T Lesiak, J Li, SW Lin, D Liventsev, G Majumder, F Mandl, D Marlow, T Matsumoto, A Matyja, Y Mikami, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, R Mizuk, T Nagamine, Y Nagasaka, Nakamura, I, E Nakano, M Nakao, Z Natkaniec, S Nishida, O Nitoh, S Noguchi, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, Y Onuki, W Ostrowicz, P Pakhlov, H Palka, CW Park, H Park, N Parslow, LS Peak, R Pestotnik, LE Piilonen, M Rozanska, H Sagawa, Y Sakai, TR Sarangi, N Sato, T Schietinger, O Schneider, P Schonmeier, J Schumann, C Schwanda, AJ Schwartz, K Senyo, ME Sevior, H Shibuya, B Shwartz, Sidorov, V, A Somov, N Soni, R Stamen, S Stanic, M Staric, K Sumisawa, T Sumiyoshi, S Suzuki, SY Suzuki, F Takasaki, N Tamura, M Tanaka, Y Teramoto, XC Tian, T Tsuboyama, T Tsukamoto, S Uehara, T Uglov, K Ueno, S Uno, P Urquijo, Y Ushiroda, G Varner, KE Varvell, S Villa, CC Wang, CH Wang, MZ Wang, Y Watanabe, QL Xie, BD Yabsley, A Yamaguchi, Y Yamashita, M Yamauchi, H Yang, J Zhang, LM Zhang, ZP Zhang, Zhilich, V, D Zontar

    PHYSICAL REVIEW D   72 ( 1 )   1 - 15   2005年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present new measurements of CP-violation parameters in B-0 -&gt;phi K-0, (K+K-KS0), f(0)(980)K-S(0), eta'K-S(0), omega K-S(0), and K-S(0)pi(0) decays based on a sample of 275 x 10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. One neutral B meson is fully reconstructed in one of the specified decay channels, and the flavor of the accompanying B meson is identified from its decay products. CP-violation parameters for each of the decay modes are obtained from the asymmetries in the distributions of the proper-time intervals between the two B decays. The combined result for the B-0 -&gt;phi K-0, (K+K-KS0), f(0)(980)K-S(0), eta'K-S(0), omega K-S(0), K-S(0)pi(0), and previously reported (KSKSKS0)-K-0-K-0 decays differs from the SM expectation by 2.4 standard deviations.

    DOI: 10.1103/PhysRevD.72.012004

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  • Measurement of the time-dependent CP-violating asymmetry in B-0 -&gt; K-S(0)pi(0)gamma decays 査読

    Y Ushiroda, K Sumisawa, M Hazumi, K Abe, K Abe, Adachi, I, H Aihara, Y Asano, Aulchenko, V, T Aushev, AM Bakich, A Bay, Bedny, I, U Bitenc, Bizjak, I, S Blyth, A Bondar, A Bozek, M Bracko, J Brodzicka, TE Browder, MC Chang, P Chang, Y Chao, A Chen, KF Chen, WT Chen, BG Cheon, SK Choi, Y Choi, A Chuvikov, S Cole, J Dalseno, M Danilov, M Dash, J Dragic, S Eidelman, F Fang, S Fratina, N Gabyshev, T Gershon, G Gokhroo, A Gorisek, J Haba, K Hara, NC Hastings, K Hayasaka, H Hayashii, T Higuchi, L Hinz, T Hokuue, Y Hoshi, S Hou, WS Hou, YB Hsiung, T Iijima, A Imoto, K Inami, A Ishikawa, H Ishino, R Itoh, M Iwasaki, Y Iwasaki, JH Kang, JS Kang, P Kapusta, N Katayama, H Kawai, T Kawasaki, HR Khan, H Kichimi, HJ Kim, SM Kim, K Kinoshita, P Krizan, P Krokovny, S Kumar, CC Kuo, A Kusaka, A Kuzmin, YJ Kwon, G Leder, T Lesiak, J Li, A Limosani, SW Lin, D Liventsev, F Mandl, T Matsumoto, Y Mikami, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, D Mohapatra, GR Moloney, T Nagamine, E Nakano, M Nakao, S Nishida, O Nitoh, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, CW Park, N Parslow, LS Peak, R Pestotnik, LE Piilonen, H Sagawa, Y Sakai, N Sato, T Schietinger, O Schneider, AJ Schwartz, K Senyo, ME Sevior, T Shibata, H Shibuya, JB Singh, A Somov, N Soni, R Stamen, S Stanic, M Staric, T Sumiyoshi, S Suzuki, O Tajima, F Takasaki, K Tamai, N Tamura, M Tanaka, Y Teramoto, XC Tian, K Trabelsi, T Tsuboyama, T Tsukamoto, S Uehara, T Uglov, S Uno, P Urquijo, G Varner, KE Varvell, S Villa, CC Wang, CH Wang, M Watanabe, Y Watanabe, QL Xie, A Yamaguchi, Y Yamashita, M Yamauchi, HY Yang, J Ying, J Zhang, LM Zhang, ZP Zhang, D Zontar

    PHYSICAL REVIEW LETTERS   94 ( 23 )   1 - 5   2005年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present a new measurement of CP-violation parameters in B-0-&gt; K(S)(0)pi(0)gamma decay based on a sample of 275x10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. One of the B mesons is fully reconstructed in the B-0-&gt; K(S)(0)pi(0)gamma decay. The flavor of the accompanying B meson is identified from its decay products. CP-violation parameters are obtained from the asymmetry in the distribution of the proper time intervals between the two B decays. We obtain S(KS)(0)pi(0)gamma=-0.58(-0.38)(+0.46)(stat)+/- 0.11(syst) and A(KS)(0)pi(0)gamma=+0.03 +/- 0.34(stat)+/- 0.11(syst), for the K(S)(0)pi(0) invariant mass covering the full range up to 1.8 GeV/c(2). We also measure the CP-violation parameters for the case B-0-&gt; K-*0(-&gt; K(S)(0)pi(0))gamma and obtain S(K)(*0)gamma=-0.79(-0.50)(+0.63)(stat)+/- 0.10(syst) for A(K)(*0)gamma fixed at 0.

    DOI: 10.1103/PhysRevLett.94.231601

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  • Measurement of polarization and triple-product correlations in B -&gt; phi K-* decays 査読

    KF Chen, K Abe, K Abe, H Aihara, Y Asano, Aulchenko, V, T Aushev, S Bahinipati, AM Bakich, Bedny, I, U Bitenc, Bizjak, I, S Blyth, A Bondar, A Bozek, M Bracko, J Brodzicka, TE Browder, MC Chang, P Chang, Y Chao, A Chen, WT Chen, BG Cheon, R Chistov, SK Choi, Y Choi, A Chuvikov, J Dalseno, M Danilov, M Dash, A Drutskoy, S Eidelman, Y Enari, F Fang, S Fratina, N Gabyshev, A Garmash, T Gershon, G Gokhroo, B Golob, A Gorisek, J Haba, NC Hastings, K Hayasaka, H Hayashii, M Hazumi, L Hinz, T Hokuue, Y Hoshi, S Hou, WS Hou, YB Hsiung, T Iijima, A Imoto, K Inami, A Ishikawa, H Ishino, R Itoh, M Iwasaki, Y Iwasaki, JH Kang, JS Kang, P Kapusta, N Katayama, H Kawai, T Kawasaki, HR Khan, H Kichimi, HJ Kim, SK Kim, SM Kim, K Kinoshita, S Korpar, P Krizan, P Krokovny, S Kumar, CC Kuo, A Kuzmin, YJ Kwon, JS Lange, G Leder, SE Lee, YJ Lee, T Lesiak, J Li, SW Lin, D Liventsev, J MacNaughton, F Mandl, T Matsumoto, A Matyja, Y Mikami, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, R Mizuk, D Mohapatra, GR Moloney, T Nagamine, Y Nagasaka, E Nakano, M Nakao, H Nakazawa, Z Natkaniec, S Nishida, O Nitoh, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, CW Park, N Parslow, LS Peak, R Pestotnik, LE Piilonen, N Root, M Rozanska, H Sagawa, Y Sakai, TR Sarangi, N Sato, T Schietinger, O Schneider, J Schumann, C Schwanda, AJ Schwartz, K Senyo, ME Sevior, T Shibata, H Shibuya, B Shwartz, Sidorov, V, JB Singh, A Somov, N Soni, R Stamen, S Stanic, M Staric, K Sumisawa, T Sumiyoshi, O Tajima, F Takasaki, K Tamai, N Tamura, M Tanaka, Y Teramoto, XC Tian, K Trabelsi, T Tsukamoto, S Uehara, T Uglov, K Ueno, S Uno, P Urquijo, Y Ushiroda, G Varner, KE Varvell, S Villa, CC Wang, CH Wang, MZ Wang, M Watanabe, Y Watanabe, QL Xie, BD Yabsley, A Yamaguchi, Y Yamashita, M Yamauchi, HY Yang, J Ying, J Zhang, LM Zhang, ZP Zhang, Zhilich, V, D Zontar, D Zurcher

    PHYSICAL REVIEW LETTERS   94 ( 22 )   2005年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present measurements of decay amplitudes and triple-product correlations in B -&gt;phi K-* decays based on 253 fb(-1) of data recorded at the Upsilon(4S) resonance with the Belle detector at the KEKB e(+)e(-) storage ring. The decay amplitudes for the three different helicity states are determined from the angular distributions of final-state particles. The longitudinal polarization amplitudes are found to be 0.45 +/- 0.05 +/- 0.02 for B-0-&gt;phi K-*0 and 0.52 +/- 0.08 +/- 0.03 for B+-&gt;phi K*+ decays. CP- and T-odd CP-violating triple-product asymmetries are measured to be consistent with zero.

    DOI: 10.1103/PhysRevLett.94.221804

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  • Radiation monitoring in Mrad range using radiation-sensing field-effect transistors 査読

    S Stanic, Y Asano, H Ishino, A Igarashi, S Iwaida, Y Nakano, H Terazaki, T Tsuboyama, Yoda, I, D Zontar

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   545 ( 1-2 )   252 - 260   2005年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

    In many of the recent e(+)e(-) particle physics experiment, monitoring of the accumulated dose in silicon is essential to maximize the lifetime of silicon vertex detectors operating in severe radiation environments Using radiation-sensing field-effect transistors (RadFET) as radiation monitoring devices. We Studied their responses during irradiation and during subsequent annealing. The relation between the RadFET response and the dose was determined by irradiations with a Co-60 source with known activity. The study of annealing at three different temperatures showed that RadFETS gradually anneal for up to 40%. Annealing can be fitted h a sum of two exponential functions with time constants of 3 and 85 days. (c) 2005 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.nima.2005.01.347

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  • Improved measurement of CP-violation parameters sin2 phi(1) and vertical bar lambda vertical bar, B meson lifetimes, and B(0)-(B)over-bar(0) mixing parameter Delta m(d) (vol D 71, art no 072003, 2005) 査読

    K Abe, K Abe, Adachi, I, H Aihara, M Akatsu, Y Asano, T Aushev, T Aziz, S Bahinipati, AM Bakich, Y Ban, S Banerjee, A Bay, Bedny, I, U Bitenc, Bizjak, I, S Blyth, A Bondar, A Bozek, M Bracko, J Brodzicka, TE Browder, P Chang, Y Chao, A Chen, KF Chen, WT Chen, BG Cheon, R Chistov, SK Choi, Y Choi, A Chuvikov, S Cole, J Dalseno, M Danilov, M Dash, A Drutskoy, S Eidelman, Eiges, V, F Fang, S Fratina, N Gabyshev, A Garmash, T Gershon, A Go, G Gokhroo, B Golob, J Haba, K Hara, NC Hastings, K Hayasaka, H Hayashii, M Hazumi, Higuchi, I, T Higuchi, L Hinz, T Hokuue, Y Hoshi, S Hou, WS Hou, T Iijima, A Imoto, K Inami, A Ishikawa, H Ishino, R Itoh, Y Iwasaki, H Kakuno, JH Kang, JS Kang, P Kapusta, SU Kataoka, N Katayama, H Kawai, T Kawasaki, H Kichimi, HJ Kim, JH Kim, SK Kim, SM Kim, K Kinoshita, P Koppenburg, S Korpar, P Krizan, P Krokovny, CC Kuo, YJ Kwon, JS Lange, G Leder, SH Lee, T Lesiak, J Li, SW Lin, D Liventsev, J MacNaughton, G Majumder, F Mandl, D Marlow, T Matsumoto, A Matyja, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, R Mizuk, T Nagamine, Y Nagasaka, Nakamura, I, E Nakano, M Nakao, S Nishida, O Nitoh, S Noguchi, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, Y Onuki, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, CW Park, N Parslow, R Pestotnik, LE Piilonen, M Rozanska, H Sagawa, Y Sakai, N Sato, T Schietinger, O Schneider, J Schumann, C Schwanda, AJ Schwartz, S Semenov, K Senyo, ME Sevior, T Shibata, H Shibuya, B Shwartz, Sidorov, V, JB Singh, A Somov, N Soni, R Stamen, S Stanic, M Staric, K Sumisawa, T Sumiyoshi, S Suzuki, SY Suzuki, O Tajima, F Takasaki, K Tamai, N Tamura, M Tanaka, Y Teramoto, XC Tian, K Trabelsi, T Tsuboyama, T Tsukamoto, S Uehara, T Uglov, K Ueno, S Uno, Y Ushiroda, KE Varvell, S Villa, CC Wang, CH Wang, M Watanabe, Y Watanabe, BD Yabsley, A Yamaguchi, H Yamamoto, Y Yamashita, M Yamauchi, J Ying, Y Yusa, CC Zhang, J Zhang, LM Zhang, ZP Zhang, Zhilich, V, D Zontar

    PHYSICAL REVIEW D   71 ( 7 )   1 - 12   2005年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    DOI: 10.1103/PhysRevD.71.079903

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  • Study of B-0 -&gt; rho(+/-)pi(-/+) time-dependent CP violation at Belle 査読

    CC Wang, K Abe, K Abe, T Abe, Adachi, I, H Aihara, Y Asano, T Aushev, AM Bakich, Y Ban, A Bay, Bedny, I, U Bitenc, Bizjak, I, S Blyth, A Bondar, A Bozek, M Bracko, TE Browder, P Chang, Y Chao, KF Chen, WT Chen, BG Cheon, SK Choi, Y Choi, A Chuvikov, S Cole, M Dash, LY Dong, J Dragic, A Drutskoy, S Eidelman, Eiges, V, T Gershon, G Gokhroo, R Guo, J Haba, NC Hastings, K Hayasaka, H Hayashii, M Hazumi, T Hokuue, Y Hoshi, S Hou, WS Hou, YB Hsiung, T Iijima, A Imoto, K Inami, A Ishikawa, H Ishino, K Itoh, R Itoh, H Iwasaki, Y Iwasaki, H Kakuno, JH Kang, JS Kang, P Kapusta, N Katayama, T Kawasaki, HR Khan, H Kichimi, HJ Kim, K Kinoshita, P Krizan, P Krokovny, S Kumar, YJ Kwon, JS Lange, SE Lee, YJ Lee, T Lesiak, J Li, A Limosani, SW Lin, J MacNaughton, T Matsumoto, A Matyja, Y Mikami, W Mitaroff, H Miyata, R Mizuk, D Mohapatra, T Mori, Y Nagasaka, T Nakadaira, E Nakano, M Nakao, Z Natkaniec, S Nishida, O Nitoh, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, W Ostrowicz, H Ozaki, P Pakhlov, CW Park, N Parslow, LS Peak, LE Piilonen, FJ Ronga, M Rozanska, H Sagawa, S Saitoh, Y Sakai, N Sato, T Schietinger, O Schneider, J Schumann, AJ Schwartz, S Semenov, K Senyo, ME Sevior, H Shibuya, JB Singh, A Somov, R Stamen, S Stanic, M Staric, K Sumisawa, T Sumiyoshi, SY Suzuki, O Tajima, F Takasaki, K Tamai, M Tanaka, GN Taylor, Y Teramoto, XC Tian, K Trabelsi, T Tsukamoto, S Uehara, T Uglov, K Ueno, S Uno, G Varner, KE Varvell, S Villa, CH Wang, MZ Wang, M Watanabe, BD Yabsley, Y Yamada, A Yamaguchi, Y Yamashita, M Yamauchi, J Ying, Y Yusa, J Zhang, LM Zhang, ZP Zhang, Zhilich, V, T Ziegler, D Zontar

    PHYSICAL REVIEW LETTERS   94 ( 12 )   1 - 6   2005年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present a time-dependent analysis of CP violation in B-0-&gt;rho(+/-)pi(-/+) decays based on a 140 fb(-1) data sample collected at the Upsilon(4S) resonance with the Belle detector at KEKB. We obtain the charge asymmetry A(CP)(rho pi) = -0.16 +/- 0.10(stat)+/- 0.02(syst). An unbinned maximum-likelihood fit to the Delta t distributions yields C-rho pi = 0.25 +/- 0.17(stat)(-0.06)(+0.02)(syst), Delta C-rho pi = 0.38 +/- 0.18(stat)(-0.04)(+0.02)(syst), S-rho pi = -0.28 +/- 0.23(stat)(-0.08)(+0.10)(syst), and Delta S-rho pi = -0.30 +/- 0.24(stat)+/- 0.09(syst). The direct CP violation parameters for B -&gt;rho(+)pi(-) and B -&gt;rho(-)pi(+) decays are A(rho pi)(+) = -0.02 +/- 0.16(stat)(-0.02)(+0.05)(syst) and A(rho pi)(-+)= -0.53 +/- 0.29(stat)(-0.04)(+0.09)(syst).

    DOI: 10.1103/PhysRevLett.94.121801

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  • The silicon vertex detector for the super B factory 査読

    T Tsuboyama, R Abe, T Abe, H Aihara, Y Asano, T Aso, A Bakich, T Browder, MC Chang, Y Chao, KF Chen, S Chidzik, J Dalseno, R Dowd, J Dragic, CW Everton, R Fernholzq, M Friedl, H Fujii, ZW Gao, A Gordon, YN Guo, J Haba, K Hara, T Hara, Y Harada, T Haruyama, K Hasuko, K Hayashi, M Hazumi, EM Heenan, T Higuchi, H Hirai, N Hitomi, A Igarashi, Y Igarashi, H Ikeda, H Ishino, K Itoh, S Iwaida, J Kaneko, P Kapusta, R Karawatzki, K Kasami, H Kawai, T Kawasaki, A Kibayashi, S Koike, S Korpar, P Krizan, H Kurashiro, A Kusaka, T Lesiak, A Limosani, WC Lin, D Marlow, H Matsumoto, Y Mikami, H Miyake, GR Moloney, T Mori, T Nakadaira, Y Nakano, Z Natkaniec, S Nozaki, R Ohkubo, F Ohno, S Okuno, Y Onuki, W Ostrowicz, H Ozaki, L Peak, M Pernicka, M Rosen, M Rozanska, N Sato, S Schmid, T Shibata, R Stamen, S Stanic, H Steininger, K Sumisawa, J Suzuki, H Tajima, O Tajima, K Takahashi, F Takasaki, N Tamura, M Tanaka, GN Taylor, H Terazaki, T Tomura, K Trabelsi, W Trischuk, K Uchida, K Ueno, K Ueno, N Uozaki, Y Ushiroda, S Vahsen, G Varner, K Varvell, YS Velikzhanin, CC Wang, MZ Wang, M Watanabe, Y Watanabe, Y Yamada, H Yamamoto, Y Yamashita, D Yamashita, M Yamauchi, H Yanai, R Yang, Y Yasu, D Yokoyama, T Ziegler, D Zontar

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   541 ( 1-2 )   421 - 426   2005年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

    The present B factories, running at the luminosity of similar to 1 x 10(34) cm(-2) s(-1), have established a large time-dependent CP asymmetry in B decays. Upgrade of the KEKB accelerator to a luminosity of 5 x 10(35) cm(-2) s(-1), designated Super KEKB, has been proposed to extend physics reach beyond the standard model. Since measurement of time evolution of B mesons is essential, the silicon vertex detector, SVD, should be redesigned to meet the data rates and radiation backgrounds expected in this Super KEKB environment. The detector configuration, sensor options and read out electronics are discussed. (c) 2005 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.nima.2005.01.084

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  • Status of the Belle Silicon Vertex Detector 査読

    R Stamen, R Abe, T Abe, H Aihara, Y Asano, T Aso, A Bakich, T Browder, MC Chang, Y Chao, KF Chen, S Chidzik, J Dalseno, R Dowd, J Dragic, CW Everton, R Fernholz, M Friedl, H Fujii, ZW Gao, A Gordon, YN Guo, J Haba, K Hara, T Hara, Y Harada, T Haruyama, K Hasuko, K Hayashi, M Hazumi, EM Heenan, T Higuchi, H Hirai, N Hitomi, A Igarashi, Y Igarashi, H Ikeda, H Ishino, K Itoh, S Iwaida, J Kaneko, P Kapusta, R Karawatzki, K Kasami, H Kawai, T Kawasaki, A Kibayashi, S Koike, S Korpar, P Krizan, H Kurashiro, A Kusaka, T Lesiak, A Limosani, WC Lin, D Marlow, H Matsumoto, Y Mikami, H Miyake, GR Moloney, T Mori, T Nakadaira, Y Nakano, Z Natkaniec, S Nozaki, R Ohkubo, F Ohno, S Okuno, Y Onuki, W Ostrowicz, H Ozaki, L Peak, M Pernicka, M Rosen, M Rozanska, N Sato, S Schmid, T Shibata, S Stanic, H Steininger, K Sumisawa, J Suzuki, H Tajima, O Tajima, K Takahashi, F Takasaki, N Tamura, M Tanaka, GN Taylor, H Terazaki, T Tomura, K Trabelsi, W Trischuk, T Tsuboyama, K Uchida, K Ueno, K Ueno, N Uozaki, Y Ushiroda, S Vahsen, G Varner, K Varvell, YS Velikzhanin, CC Wang, MZ Wang, M Watanabe, Y Watanabe, Y Yamada, H Yamamoto, Y Yamashita, Y Yamashita, M Yamauchi, H Yanai, R Yang, Y Yasu, M Yokoyama, T Ziegler, D Zontar

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   541 ( 1-2 )   61 - 66   2005年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

    The Silicon Vertex Detector (SVD) of the Belle experiment is one of the main components for the investigation of time-dependent CP-asymmetries at the B-factory at KEK. The first version of this device (SVD1) was operated for 4 years starting in 1999 with excellent performance. However, its major limitations necessitated the design of a new detector (SVD2) which was installed in the summer shutdown of 2003. The improvements of the hardware and first results on the performance under real beam conditions are presented. (c) 2005 Published by Elsevier B.V.

    DOI: 10.1016/j.nima.2005.01.038

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  • Belle results on time dependent CP violation in B decays

    H Ishino

    INTERNATIONAL JOURNAL OF MODERN PHYSICS A   20 ( 2-3 )   365 - 374   2005年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:WORLD SCIENTIFIC PUBL CO PTE LTD  

    We report on measurements of time-dependent, CP-violation parameters in neutral B meson systems based on a 140 fb(-1) data sample collected at the Y(4S) resonance with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. One B meson is fully reconstructed in one of the CP eigenstate decay channels, and its flavor is identified from the decay products of the accompanying B meson. The CP-violation parameters are extracted from the asymmetries in the distributions of the proper-time intervals between the two B decays. The parameter sin 2 phi(1) is measured with the decay modes including the b -&gt; c tree and b -&gt; s penguin transitions, and sin 202 is obtained from the decay mode B -&gt; pi(+)pi(-). A brief discussion of the phi(3) measurements with B -&gt; D(*) (-/+)pi(+/-) decays is also given.

    DOI: 10.1142/S0217751X05021531

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  • Measurement of the branching fraction and CP asymmetry in B+->rho(+)pi(0) 査読

    J Zhang, K Abe, K Abe, T Abe, H Aihara, Y Asano, Aulchenko, V, T Aushev, T Aziz, S Bahinipati, AM Bakich, A Bay, Bedny, I, U Bitenc, Bizjak, I, S Blyth, A Bondar, A Bozek, M Bracko, TE Browder, P Chang, Y Chao, KF Chen, BG Cheon, R Chistov, SK Choi, Y Choi, A Chuvikov, M Danilov, M Dash, LY Dong, J Dragic, A Drutskoy, S Eidelman, Eiges, V, Y Enari, S Fratina, N Gabyshev, A Garmash, T Gershon, G Gokhroo, B Golob, H Hayashii, M Hazumi, T Higuchi, L Hinz, T Hokuue, Y Hoshi, WS Hou, YB Hsiung, T Iijima, A Imoto, K Inami, A Ishikawa, H Ishino, R Itoh, H Iwasaki, M Iwasaki, Y Iwasaki, JH Kang, JS Kang, N Katayama, H Kawai, T Kawasaki, HR Khan, H Kichimi, HJ Kim, JH Kim, TH Kim, K Kinoshita, P Koppenburg, S Korpar, P Krizan, P Krokovny, S Kumar, A Kuzmin, YJ Kwon, G Leder, SE Lee, SH Lee, T Lesiak, J Li, A Limosani, SW Lin, J MacNaughton, G Majumder, F Mandl, T Matsumoto, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, R Mizuk, D Mohapatra, GR Moloney, T Mori, T Nagamine, Y Nagasaka, M Nakao, S Nishida, O Nitoh, T Nozaki, T Okabe, S Okuno, SL Olsen, W Ostrowicz, H Ozaki, P Pakhlov, CW Park, H Park, N Parslow, LE Piilonen, FJ Ronga, M Rozanska, H Sagawa, Y Sakai, TR Sarangi, O Schneider, J Schumann, AJ Schwartz, S Semenov, K Senyo, ME Sevior, H Shibuya, B Shwartz, A Somov, N Soni, R Stamen, S Stanic, M Staric, K Sumisawa, T Sumiyoshi, S Suzuki, O Tajima, F Takasaki, K Tamai, M Tanaka, GN Taylor, Y Teramoto, T Tomura, T Tsuboyama, T Tsukamoto, S Uehara, T Uglov, K Ueno, Y Unno, S Uno, G Varner, KE Varvell, S Villa, CC Wang, CH Wang, MZ Wang, M Watanabe, Y Watanabe, BD Yabsley, Y Yamada, A Yamaguchi, Y Yamashita, M Yamauchi, HY Yang, J Ying, Y Yusa, SL Zang, CC Zhang, ZP Zhang, Zhilich, V, T Ziegler, D Zontar

    PHYSICAL REVIEW LETTERS   94 ( 3 )   1 - 5   2005年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a measurement of the branching fraction for the decay B+-->rho(+)pi(0) based on a 140 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric e(+)e(-) collider. We measure the branching fraction B(B+-->rho(+)pi(0))=(13.2+/-2.3(stat)(-1.9)(+1.4)(syst))x10(-6), and the CP-violating asymmetry A(CP)(B-/+-->rho(-/+)pi(0))=0.06+/-0.17(stat)(-0.05)(+0.04)(syst).

    DOI: 10.1103/PhysRevLett.94.031801

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  • Search for nucleon decay via modes favored by supersymmetric grand unification models in Super-Kamiokande-I 査読

    Kobayashi, K., Earl, M., Ashie, Y., Hosaka, J., Ishihara, K., Itow, Y., Kameda, J., Koshio, Y., Minamino, A., Mitsuda, C., Miura, M., Moriyama, S., Nakahata, M., Namba, T., Nambu, R., Obayashi, Y., Shiozawa, M., Suzuki, Y., Takeuchi, Y., Taki, K., Yamada, S., Ishitsuka, M., Kajita, T., Kaneyuki, K., Nakayama, S., Okada, A., Okumura, K., Ooyabu, T., Saji, C., Takenaga, Y., Desai, S., Kearns, E., Likhoded, S., Stone, J.L., Sulak, L.R., Wang, W., Goldhaber, M., Casper, D., Cravens, J.P., Gajewski, W., Kropp, W.R., Liu, D.W., Mine, S., Smy, M.B., Sobel, H.W., Sterner, C.W., Vagins, M.R., Ganezer, K.S., Hill, J.E., Keig, W.E., Jang, J.S., Kim, J.Y., Lim, I.T., Scholberg, K., Walter, C.W., Ellsworth, R.W., Tasaka, S., Guillian, G., Kibayashi, A., Learned, J.G., Matsuno, S., Takemori, D., Messier, M.D., Hayato, Y., Ichikawa, A.K., Ishida, T., Ishii, T., Iwashita, T., Kobayashi, T., Maruyama, T., Nakamura, K., Nitta, K., Oyama, Y., Sakuda, M., Totsuka, Y., Suzuki, A.T., Hasegawa, M., Hayashi, K., Kato, I., Maesaka, H., Morita, T., Nakadaira, T., Nakaya, T., Nishikawa, K., Sasaki, T., Ueda, S., Yamamoto, S., Yokoyama, M., Haines, T.J., Dazeley, S., Hatakeyama, S., Svoboda, R., Blaufuss, E., Goodman, J.A., Sullivan, G.W., Turcan, D., Habig, Alec, Fukuda, Y., Jung, C.K., Kato, T., Malek, M., Mauger, C., McGrew, C., Sarrat, A., Sharkey, E., Yanagisawa, C., Toshito, T., Miyano, K., Tamura, N., Ishii, J., Kuno, Y., Yoshida, M., Kim, S.B., Yoo, J., Okazawa, H., Ishizuka, T., Choi, Y., Seo, H.K., Gando, Y., Hasegawa, T., Inoue, K., Shirai, J., Suzuki, A., Koshiba, M., Nakajima, Y., Nishijima, K., Harada, T., Ishino, H., Watanabe, Y., Kielczewska, D., Zalipska, J., Berns, H.G., Gran, R., Shiraishi, K.K., Stachyra, A., Washburn, K., Wilkes, R.J.

    Phys.Rev.D   72 ( 052007 )   052007 - 052007   2005年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.72.052007

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  • A Measurement of atmospheric neutrino oscillation parameters by SUPER-KAMIOKANDE I 査読

    Ashie, Y., Hosaka, J., Ishihara, K., Itow, Y., Kameda, J., Koshio, Y., Minamino, A., Mitsuda, C., Miura, M., Moriyama, S., Nakahata, M., Namba, T., Nambu, R., Obayashi, Y., Shiozawa, M., Suzuki, Y., Takeuchi, Y., Taki, K., Yamada, S., Ishitsuka, M., Kajita, T., Kaneyuki, K., Nakayama, S., Okada, A., Okumura, K., Saji, C., Takenaga, Y., Clark, S.T., Desai, S., Kearns, E., Likhoded, S., Stone, J.L., Sulak, L.R., Wang, W., Goldhaber, M., Casper, D., Cravens, J.P., Gajewski, W., Kropp, W.R., Liu, D.W., Mine, S., Smy, M.B., Sobel, H.W., Sterner, C.W., Vagins, M.R., Ganezer, K.S., Hill, J., Keig, W.E., Jang, J.S., Kim, J.Y., Lim, I.T., Scholberg, K., Walter, C.W., Ellsworth, R.W., Tasaka, S., Guillian, G., Kibayashi, A., Learned, J.G., Matsuno, S., Takemori, D., Messier, M.D., Hayato, Y., Ichikawa, A.K., Ishida, T., Ishii, T., Iwashita, T., Kobayashi, T., Maruyama, T., Nakamura, K., Nitta, K., Oyama, Y., Sakuda, M., Totsuka, Y., Suzuki, A.T., Hasegawa, M., Hayashi, K., Kato, I., Maesaka, H., Morita, T., Nakaya, T., Nishikawa, K., Sasaki, T., Ueda, S., Yamamoto, S., Haines, T.J., Dazeley, S., Hatakeyama, S., Svoboda, R., Blaufuss, E., Goodman, J.A., Sullivan, G.W., Turcan, D., Habig, Alec, Fukuda, Y., Jung, C.K., Kato, T., Kobayashi, K., Malek, M., Mauger, C., McGrew, C., Sarrat, A., Sharkey, E., Yanagisawa, C., Toshito, T., Miyano, K., Tamura, N., Ishii, J., Kuno, Y., Yoshida, M., Kim, S.B., Yoo, J., Okazawa, H., Ishizuka, T., Choi, Y., Seo, H.K., Gando, Y., Hasegawa, T., Inoue, K., Shirai, J., Suzuki, A., Koshiba, M., Nakajima, Y., Nishijima, K., Harada, T., Ishino, H., Watanabe, Y., Kielczewska, D., Zalipska, J., Berns, H.G., Gran, R., Shiraishi, K.K., Stachyra, A., Washburn, K., Wilkes, R.J.

    Phys.Rev.D   71 ( 11 )   112005 - 112005   2005年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.71.112005

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  • Readout, first- and second-level triggers of the new Belle silicon vertex detector 査読

    M Friedl, R Abe, T Abe, H Aihara, Y Asano, T Aso, A Bakich, T Browder, MC Chang, Y Chao, KF Chen, S Chidzik, J Dalseno, R Dowd, J Dragic, CW Everton, R Fernholz, H Fujii, ZW Gao, A Gordon, YN Guo, J Haba, K Hara, T Hara, Y Harada, T Haruyama, K Hasuko, K Hayashi, M Hazumi, EM Heenan, T Higuchi, H Hirai, N Hitomi, A Igarashi, Y Igarashi, H Ikeda, H Ishino, K Itoh, S Iwaida, J Kaneko, P Kapusta, R Karawatzki, K Kasami, H Kawai, T Kawasaki, A Kibayashi, S Koike, S Korpar, P Krizan, H Kurashiro, A Kusaka, T Lesiak, A Limosani, WC Lin, D Marlow, H Matsumoto, Y Mikami, H Miyake, GR Moloney, T Mori, T Nakadaira, Y Nakano, Z Natkaniec, S Nozaki, R Ohkubo, F Ohno, S Okuno, Y Onuki, W Ostrowicz, H Ozaki, L Peak, M Pernicka, M Rosen, M Rozanska, N Sato, S Schmid, T Shibata, R Stamen, S Stanic, H Steininger, K Sumisawa, J Suzuki, H Tajima, O Tajima, K Takahashi, F Takasaki, N Tamura, M Tanaka, GN Taylor, H Terazaki, T Tomura, K Trabelsi, W Trischuk, T Tsuboyama, K Uchida, K Ueno, K Ueno, N Uozaki, Y Ushiroda, S Vahsen, G Varner, K Varvell, YS Velikzhanin, CC Wang, MZ Wang, M Watanabe, Y Watanabe, Y Yamada, H Yamamoto, Y Yamashita, Y Yamashita, M Yamauchi, H Yanai, R Yang, Y Yasu, M Yokoyama, T Ziegler, D Zontar

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   535 ( 1-2 )   491 - 496   2004年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

    A major upgrade of the Silicon Vertex Detector (SVD 2.0) of the Belle experiment at the KEKB factory was installed along with new front-end and back-end electronics systems during the summer shutdown period in 2003 to cope with higher particle rates, improve the track resolution and meet the increasing requirements of radiation tolerance.
    The SVD 2.0 detector modules are read out by VA1TA chips which provide "fast or" (hit) signals that are combined by the back-end FADCTF modules to coarse, but immediate level 0 track trigger signals at rates of several tens of a kHz. Moreover, the digitized detector signals are compared to threshold lookup tables in the FADCTFs to pass on hit information on a single strip basis to the subsequent level 1.5 trigger system, which reduces the rate below the kHz range. Both FADCTF and level 1.5 electronics make use of parallel real-time processing in Field Programmable Gate Arrays (FPGAs), while further data acquisition and event building is done by PC farms running Linux.
    The new readout system hardware is described and the first results obtained with cosmics are shown. (C) 2004 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.nima.2004.07.178

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  • BELLE/SVD2 status and performance 査読

    R Abe, T Abe, H Aihara, Y Asano, T Aso, A Bakich, T Browder, MC Chang, Y Chao, KF Chen, S Chidzik, J Dalseno, R Dowd, J Dragic, CW Everton, R Fernholz, M Friedl, H Fujii, ZW Gao, A Gordon, YN Guo, J Haba, K Hara, T Hara, Y Harada, T Haruyama, K Hasuko, K Hayashi, M Hazumi, EM Heenan, T Higuchi, H Hirai, N Hitomi, A Igarashi, Y Igarashi, H Ikeda, H Ishino, K Itoh, S Iwaida, J Kaneko, P Kapusta, R Karawatzki, K Kasami, H Kawai, T Kawasaki, A Kibayashi, S Koike, S Korpar, P Krizan, H Kurashiro, A Kusaka, T Lesiak, A Limosani, WC Lin, D Marlow, H Matsumoto, Y Mikami, H Miyake, GR Moloney, T Mori, T Nakadaira, Y Nakano, Z Natkaniec, S Nozaki, R Ohkubo, F Ohno, S Okuno, Y Onuki, W Ostrowicz, H Ozaki, L Peak, M Pernicka, M Rosen, M Rozanska, N Sato, S Schmid, T Shibata, R Stamen, S Stanic, H Steininger, K Sumisawa, J Suzuki, H Tajima, O Tajima, K Takahashi, F Takasaki, N Tamura, M Tanaka, GN Taylor, H Terazaki, T Tomura, K Trabelsi, W Trischuk, T Tsuboyama, K Uchida, K Ueno, K Ueno, N Uozaki, Y Ushiroda, S Vahsen, G Varner, K Varvell, YS Velikzhanin, CC Wang, MZ Wang, M Watanabe, Y Watanabe, Y Yamada, H Yamamoto, Y Yamashita, Y Yamashita, M Yamauchi, H Yanai, R Yang, Y Yasu, M Yokoyama, T Ziegler, D Zontar

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   535 ( 1-2 )   379 - 383   2004年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

    A new silicon vertex detector for the BELLE experiment was installed and its operation has started successfully at the high-luminosity asymmetric energy e(+)e(-) collider KEKB in October 2003. This vertex detector provides a larger polar angle acceptance, a more precise vertex resolution and a better radiation tolerance than the previous one. The obtained performances indicate that the SVD2 works reliably as expected. Moreover, a prospective simulation study shows that the SVD2 should work under the coming higher background conditions. (C) 2004 Published by Elsevier B.V.

    DOI: 10.1016/j.nima.2004.07.156

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  • Study of time-dependent CP violation in B-0 -&gt; J/psi pi(0) decays 査読

    SU Kataoka, K Abe, K Abe, Adachi, I, H Aihara, M Akatsu, Y Asano, T Aushev, S Bahinipati, AM Bakich, A Bay, Bedny, I, U Bitenc, Bizjak, I, A Bondar, M Bracko, Y Chao, A Chen, WT Chen, BG Cheon, R Chistov, Y Choi, M Danilov, M Dash, LY Dong, J Dragic, S Eidelman, Eiges, V, Y Enari, F Fang, S Fratina, N Gabyshev, A Garmash, T Gershon, A Go, G Gokhroo, B Golob, J Haba, K Hara, NC Hastings, K Hayasaka, H Hayashii, M Hazumi, T Higuchi, L Hinz, T Hokuue, Y Hoshi, S Hou, WS Hou, YB Hsiung, T Iijima, A Imoto, K Inami, A Ishikawa, H Ishino, R Itoh, M Iwasaki, Y Iwasaki, JH Kang, JS Kang, P Kapusta, N Katayama, H Kawai, T Kawasaki, HR Khan, HJ Kim, K Kinoshita, P Koppenburg, S Korpar, P Krizan, P Krokovny, CC Kuo, A Kuzmin, YJ Kwon, JS Lange, G Leder, SE Lee, SH Lee, T Lesiak, J Li, SW Lin, J MacNaughton, F Mandl, T Matsumoto, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, D Mohapatra, T Mori, T Nagamine, Y Nagasaka, E Nakano, H Nakazawa, Z Natkaniec, S Nishida, O Nitoh, S Noguchi, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, Y Onuki, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, H Park, LS Peak, LE Piilonen, FJ Ronga, M Rozanska, H Sagawa, Y Sakai, N Sato, T Schietinger, O Schneider, J Schumann, AJ Schwartz, S Semenov, K Senyo, ME Sevior, T Shibata, H Shibuya, JB Singh, A Somov, N Soni, R Stamen, M Staric, K Sumisawa, T Sumiyoshi, O Tajima, F Takasaki, N Tamura, M Tanaka, GN Taylor, Y Teramoto, K Trabelsi, T Tsukamoto, K Ueno, S Uno, G Varner, S Villa, CC Wang, CH Wang, M Watanabe, BD Yabsley, A Yamaguchi, Y Yamashita, H Yang, J Ying, Y Yuan, SL Zang, CC Zhang, J Zhang, LM Zhang, ZP Zhang, Zhilich, V, T Ziegler, D Zontar

    PHYSICAL REVIEW LETTERS   93 ( 26 )   1 - 6   2004年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a measurement of CP asymmetry parameters in the decay B-0((B) over bar (0))--&gt;J/psipi(0), which is governed by the b--&gt;c(c) over bar d transition. The analysis is based on a 140 fb(-1) data sample accumulated at the Y(4S) resonance by the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. One neutral B meson in the J/psipi(0) final state is fully reconstructed for events used in this analysis. The accompanying B meson flavor is identified by its decay products. From the distribution of proper-time intervals between the two B decays, we obtain the following CP-violating parameters: S-J/psipi(0)=-0.72+/-0.42(stat)+/-0.09(syst) and A(J/psipi)(0)=-0.01+/-0.29(stat)+/-0.03(syst).

    DOI: 10.1103/PhysRevLett.93.261801

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  • The new beampipe for the Belle experiment 査読

    R Abe, T Abe, H Aihara, Y Asano, T Aso, A Bakich, T Browder, MC Chang, Y Chao, KF Chen, S Chidzik, J Dalseno, R Dowd, J Dragic, CW Everton, R Fernholz, M Friedl, H Fujii, ZW Gao, A Gordon, YN Guo, J Haba, K Hara, T Hara, Y Harada, T Haruyama, K Hasuko, K Hayashi, M Hazumi, EM Heenan, T Higuchi, H Hirai, N Hitomi, A Igarashi, Y Igarashi, H Ikeda, H Ishino, K Itoh, S Iwaida, J Kaneko, P Kapusta, R Karawatzki, K Kasami, H Kawai, T Kawasaki, A Kibayashi, S Koike, S Korpar, P Krizan, H Kurashiro, A Kusaka, T Lesiak, A Limosani, WC Lin, D Marlow, H Matsumoto, Y Mikami, H Miyake, GR Moloney, T Mori, T Nakadaira, Y Nakano, Z Natkaniec, S Nozaki, R Ohkubo, F Ohno, S Okuno, Y Onuki, W Ostrowicz, H Ozaki, L Peak, M Pernicka, M Rosen, M Rozanska, N Sato, S Schmid, T Shibata, R Stamen, S Stanic, H Steininger, K Sumisawa, J Suzuki, H Tajima, O Tajima, K Takahashi, F Takasaki, N Tamura, M Tanaka, GN Taylor, H Terazaki, T Tomura, K Trabelsi, W Trischuk, T Tsuboyama, K Uchida, K Ueno, K Ueno, N Uozaki, Y Ushiroda, S Vahsen, G Varner, K Varvell, YS Velikzhanin, CC Wang, MZ Wang, M Watanabe, Y Watanabe, Y Yamada, H Yamamoto, Y Yamashita, Y Yamashita, M Yamauchi, H Yanai, R Yang, Y Yasu, M Yokoyama, T Ziegler, D Zontar

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   535 ( 1-2 )   558 - 561   2004年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

    We have upgraded the beampipe and the silicon vertex tracker of the Belle detector for increased luminosity and to achieve better vertex resolution. The radius of the beampipe was reduced from 2 to 1.5 cm to achieve better vertex resolution. In order to reduce the beam background that could accompany the reduction of the beampipe radius, a massive mask made of tantalum and tungsten was placed on each side of the central section. The total weight of them is 40 kg. The maximum radiation dose of the silicon tracker is measured about 80 krad/yr. This is lower than the dose of 100 krad per year with the previous beampipe even though the beampipe radius is smaller. The beampipe is designed to minimize heating, and enough cooling power is provided by the liquid cooling. (C) 2004 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.nima.2004.07.260

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  • Search for CP violation in the decay B-0 -&gt;(DD -/+)-D-*+/- 査読

    T Aushev, Y Iwasaki, K Abe, K Abe, Adachi, I, H Aihara, M Akatsu, Y Asano, T Aziz, S Bahinipati, AM Bakich, A Bay, Bedny, I, U Bitenc, Bizjak, I, S Blyth, A Bondar, A Bozek, M Bracko, J Brodzicka, P Chang, Y Chao, A Chen, WT Chen, BG Cheon, R Chistov, Y Choi, A Chuvikov, M Danilov, M Dash, LY Dong, J Dragic, A Drutskoy, S Eidelman, Eiges, V, Y Enari, F Fang, S Fratina, N Gabyshev, A Garmash, T Gershon, G Gokhroo, B Golob, NC Hastings, K Hayasaka, M Hazumi, T Higuchi, L Hinz, T Hokuue, Y Hoshi, S Hou, WS Hou, T Iijima, A Imoto, K Inami, A Ishikawa, H Ishino, R Itoh, M Iwasaki, JH Kang, JS Kang, SU Kataoka, N Katayama, H Kawai, T Kawasaki, HR Khan, HJ Kim, SK Kim, K Kinoshita, P Koppenburg, S Korpar, P Krizan, P Krokovny, CC Kuo, A Kuzmin, YJ Kwon, JS Lange, G Leder, SH Lee, T Lesiak, J Li, SW Lin, D Liventsev, J MacNaughton, F Mandl, T Matsumoto, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, R Mizuk, D Mohapatra, T Mori, T Nagamine, Y Nagasaka, E Nakano, M Nakao, H Nakazawa, Z Natkaniec, S Nishida, O Nitoh, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, H Park, LS Peak, LE Piilonen, H Sagawa, Y Sakai, N Sato, T Schietinger, O Schneider, J Schumann, AJ Schwartz, S Semenov, K Senyo, ME Sevior, H Shibuya, A Somov, N Soni, R Stamen, M Staric, K Sumisawa, T Sumiyoshi, O Tajima, F Takasaki, N Tamura, M Tanaka, GN Taylor, Y Teramoto, K Trabelsi, T Tsukamoto, S Uehara, T Uglov, K Ueno, S Uno, G Varner, KE Varvell, S Villa, CC Wang, CH Wang, BD Yabsley, A Yamaguchi, Y Yamashita, J Ying, Y Yuan, SL Zang, J Zhang, LM Zhang, ZP Zhang, Zhilich, V, D Zontar

    PHYSICAL REVIEW LETTERS   93 ( 20 )   1 - 6   2004年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a search for CP-violating asymmetry in B-0--&gt;D*+/-D-/+ decays. The analysis employs two methods of B-0 reconstruction: full and partial. In the full reconstruction method all daughter particles of the B-0 are required to be detected; the partial reconstruction technique requires a fully reconstructed D- and only a slow pion from the D*+--&gt;D(0)pi(slow)(+) decay. From a fit to the distribution of the time interval corresponding to the distance between two B meson decay points we calculate the CP-violating parameters and find the significance of nonzero CP asymmetry to be 2.7 standard deviations.

    DOI: 10.1103/PhysRevLett.93.201802

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  • Evidence for direct CP violation in B-0 -&gt; K+pi(-) decays 査読

    Y Chao, P Chang, K Abe, K Abe, N Abe, Adachi, I, H Aihara, K Akai, M Akatsu, M Akemoto, Y Asano, T Aso, Aulchenko, V, T Aushev, T Aziz, S Bahinipati, AM Bakich, Y Ban, M Barbero, A Bay, Bedny, I, U Bitenc, Bizjak, I, S Blyth, A Bondar, A Bozek, M Bracko, J Brodzicka, TE Browder, MC Chang, A Chen, KF Chen, WT Chen, BG Cheon, R Chistov, SK Choi, Y Choi, YK Choi, A Chuvikov, S Cole, M Danilov, M Dash, LY Dong, R Dowd, J Dragic, A Drutskoy, S Eidelman, Eiges, V, Y Enari, D Epifanov, CW Everton, F Fang, J Flanagan, S Fratina, H Fujii, Y Funakoshi, K Furukawa, N Gabyshev, A Garmash, T Gershon, A Go, G Gokhroo, B Golob, MG Perdekamp, H Guler, R Guo, J Haba, C Hagner, F Handa, K Hara, T Hara, NC Hastings, K Hasuko, K Hayasaka, H Hayashii, M Hazumi, EM Heenan, Higuchi, I, T Higuchi, L Hinz, T Hojo, T Hokuue, Y Hoshi, K Hoshina, S Hou, WS Hou, YB Hsiung, HC Huang, T Igaki, Y Igarashi, T Iijima, H Ikeda, A Imoto, K Inami, A Ishikawa, H Ishino, K Itoh, R Itoh, M Iwamoto, M Iwasaki, Y Iwasaki, R Kagan, H Kakuno, T Kamitani, JH Kang, JS Kang, P Kapusta, SU Kataoka, N Katayama, H Kawai, H Kawai, Y Kawakami, N Kawamura, T Kawasaki, N Kent, HR Khan, A Kibayashi, H Kichimi, M Kikuchi, E Kikutani, HJ Kim, HO Kim, H Kim, JH Kim, SK Kim, TH Kim, K Kinoshita, S Kobayashi, H Koiso, P Koppenburg, S Korpar, P Krizan, P Krokovny, T Kubo, R Kulasiri, S Kumar, CC Kuo, H Kurashiro, E Kurihara, A Kusaka, A Kuzmin, YJ Kwon, JS Lange, G Leder, SE Lee, SH Lee, YJ Lee, T Lesiak, J Li, A Limosani, SW Lin, D Liventsev, J MacNaughton, G Majumder, F Mandl, D Marlow, M Masuzawa, T Matsuishi, H Matsumoto, S Matsumoto, T Matsumoto, A Matyja, S Michizono, Y Mikami, T Mimashi, W Mitaroff, K Miyabayashi, Y Miyabayashi, H Miyake, H Miyata, R Mizuk, D Mohapatra, GR Moloney, GF Moorhead, T Mori, J Mueller, A Murakami, T Nagamine, Y Nagasaka, T Nakadaira, Nakamura, I, TT Nakamura, E Nakano, M Nakao, H Nakayama, H Nakazawa, Z Natkaniec, K Neichi, S Nishida, O Nitoh, S Noguchi, T Nozaki, A Ogawa, S Ogawa, Y Ogawa, K Ohmi, Y Ohnishi, T Ohshima, N Ohuchi, K Oide, T Okabe, S Okuno, SL Olsen, Y Onuki, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, CW Park, H Park, KS Park, N Parslow, LS Peak, M Pernicka, JP Perroud, M Peters, LE Piilonen, A Poluektov, FJ Ronga, N Root, M Rozanska, H Sagawa, M Saigo, S Saitoh, Y Sakai, H Sakamoto, H Sakaue, TR Sarangi, M Satapathy, N Sato, T Schietinger, O Schneider, J Schumann, C Schwanda, AJ Schwartz, T Seki, S Semenov, K Senyo, Y Settai, R Seuster, ME Sevior, T Shibata, H Shibuya, T Shidara, B Shwartz, Sidorov, V, Siegle, V, JB Singh, A Somov, N Soni, R Stamen, S Stanic, M Staric, R Sugahara, A Sugi, T Sugimura, A Sugiyama, K Sumisawa, T Sumiyoshi, S Suzuki, SY Suzuki, SK Swain, O Tajima, F Takasaki, K Tamai, N Tamura, K Tanabe, M Tanaka, M Tawada, GN Taylor, Y Teramoto, XC Tian, S Tokuda, SN Tovey, K Trabelsi, T Tsuboyama, T Tsukamoto, K Uchida, S Uehara, T Uglov, K Ueno, Y Unno, S Uno, Y Ushiroda, G Varner, KE Varvell, S Villa, CC Wang, CH Wang, JG Wang, MZ Wang, M Watanabe, Y Watanabe, L Widhalm, QL Xie, BD Yabsley, A Yamaguchi, H Yamamoto, N Yamamoto, S Yamamoto, T Yamanaka, Y Yamashita, M Yamauchi, H Yang, P Yeh, J Ying, K Yoshida, M Yoshida, Y Yuan, Y Yusa, H Yuta, SL Zang, CC Zhang, J Zhang, LM Zhang, ZP Zhang, Y Zheng, Zhilich, V, T Ziegler, D Zontar, D Zurcher

    PHYSICAL REVIEW LETTERS   93 ( 19 )   1 - 6   2004年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report evidence for direct CP violation in the decay B-0--&gt;K(+)pi(-) with 253 fb(-1) of data collected with the Belle detector at the KEKB e(+)e(-) collider. Using 275x10(6) B(B) over bar pairs we observe a B--&gt;K(+/-)pi(-/+) signal with 2140+/-53 events. The measured CP violating asymmetry is A(CP)(K(+)pi(-))=-0.101+/-0.025(stat)+/-0.005(syst), corresponding to a significance of 3.9sigma including systematics. We also search for CP violation in the decays B+--&gt;K(+)pi(0) and B+--&gt;pi(+)pi(0). The measured CP violating asymmetries are A(CP)(K(+)pi(0))=0.04+/-0.05(stat)+/-0.02(syst) and A(CP)(pi(+)pi(0))=-0.02+/-0.10(stat)+/-0.01(syst), corresponding to the intervals -0.05&lt; A(CP)(K(+)pi(0))&lt;0.13 and -0.18&lt; A(CP)(pi(+)pi(0))&lt;0.14 at 90% confidence level.

    DOI: 10.1103/PhysRevLett.93.191802

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  • The data acquisition system of the Belle silicon vertex detector (SVD) upgrade 査読

    H Ishino, R Abe, T Abe, H Aihara, Y Asano, T Aso, A Bakich, T Browder, MC Chang, Y Chao, KF Chen, S Chidzik, J Dalseno, R Dowd, J Dragic, CW Everton, R Fernholz, M Friedl, H Fujii, ZW Gao, A Gordon, YN Guo, J Haba, J Hara, T Hara, Y Harada, T Haruyama, K Hasuko, K Hayashi, M Hazumi, EM Heenan, T Higuchi, H Hirai, N Hitomi, A Igarashi, Y Igarashi, H Ikeda, K Itoh, S Iwaida, J Kaneko, P Kapusta, R Karawatzki, K Kasami, H Kawai, T Kawasaki, A Kibayashi, S Koike, S Korpar, P Krizan, H Kurashiro, A Kusaka, T Lesiak, A Limosani, WC Lin, D Marlow, H Matsumoto, Y Mikami, H Miyake, GR Moloney, T Mori, T Nakadaira, Y Nakano, Z Natkaniec, S Nozaki, R Ohkubo, F Ohno, S Okuno, Y Onuki, W Ostrowicz, H Ozaki, L Peak, M Pernicka, M Rosen, M Rozanska, N Sato, S Schmid, T Shibata, R Stamen, S STanic, H Steininger, K Sumisawa, J Suzuki, H Tajima, O Tajima, K Takahashi, F Takasaki, N Tamura, M Tanaka, GN Taylor, H Terazaki, T Tomura, K Trabelsi, W Trischuk, T Tsuboyama, K Uchiba, K Ueno, K Ueno, N Uozaki, Y Ushiroda, S Vahsen, G Varner, K Varvell, YS Velikzhanin, CC Wang, MZ Wang, M Watanabe, Y Watanabe, Y Yamada, H Yamamoto, Y Yamashita, Y Yamashita, M Yamauchi, H Yanai, R Yang, Y Yasu, M Yokoyama, T Ziegler, D Zontar

    IEEE TRANSACTIONS ON NUCLEAR SCIENCE   51 ( 5 )   2064 - 2068   2004年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC  

    A newly developed data acquisition system (DAQ) for the upgraded silicon vertex detector (SVD2) in the Belle experiment is described. The system consists of 12 PCs connected through PCI I/O boards to 36 flash analog-to-digital converters (FADCs) to read out a system comprising a total of 110 592 strips. It is designed to cope with the increased number of readout channels and the maximum trigger rate of 1 kHz, foreseen in the future operation with higher beam currents. A measurement of the system performance using sparsification algorithm we have developed yields a 1.3-kHz readout rate for a 5% occupancy with less than 5% dead time, which satisfies the requirements on the maximum trigger rate.

    DOI: 10.1109/tns.2004.832649

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  • The Belle trigger system with the new silicon vertex detector SVD2 査読

    T Ziegler, R Abe, T Abe, H Aihara, Y Asano, T Aso, A Bakich, T Browder, MC Chang, Y Chao, KE Chen, S Chidzik, J Dalseno, R Dowd, J Dragic, CW Everton, R Fernholz, M Friedl, H Fujii, ZW Gao, A Gordon, YN Guo, J Haba, K Hara, T Hara, Y Harada, T Haruyama, K Hasuko, K Hayashi, M Hazumi, EM Heenan, T Higuchi, H Hirai, N Hitomi, A Igarashi, Y Igarashi, H Ikeda, H Ishino, K Itoh, S Iwaida, J Kaneko, P Kapusta, R Karawatzki, K Kasami, H Kawai, T Kawasaki, A Kibayashi, S Koike, S Korpar, P Krizan, H Kurashiro, A Kusaka, T Lesiak, A Limosani, WC Lin, D Marlow, H Matsumoto, Y Mikami, H Miyake, GR Moloney, T Mori, T Nakadaira, Y Nakano, Z Natkaniec, S Nozaki, R Ohkubo, F Ohno, S Okuno, Y Onuki, W Ostrowicz, H Ozaki, L Peak, M Pernicka, M Rosen, M Rozanska, N Sato, S Schmid, T Shibata, R Stamen, S Stanic, H Steininger, K Sumisawa, J Suzuki, H Tajima, O Tajima, K Takahashi, F Takasaki, N Tamura, M Tanaka, GN Taylor, H Terazaki, T Tomura, K Trabelsi, W Trischuk, T Tsuboyama, K Uchida, K Ueno, K Ueno, N Uozaki, Y Ushiroda, S Vahsen, G Varner, K Varvell, YS Velikzhanin, CC Wang, MZ Wang, M Watanabe, Y Watanabe, Y Yamada, H Yamamoto, Y Yamashita, Y Yamashita, M Yamauchi, H Yanai, R Yang, Y Yasu, M Yokoyama, Zontar

    IEEE TRANSACTIONS ON NUCLEAR SCIENCE   51 ( 4 )   1852 - 1856   2004年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC  

    During the summer shutdown of 2003, the new silicon vertex detector SVD2 was installed in Belle at the KEKB factory and started to take data in October 2003. It provides important improvements in the tracking capabilities and adds new trigger functionality. In addition, a new hardware trigger Level 1.5 was designed and installed that takes advantage of the digitized SVD hit data. The improvement in the Belle trigger system will be important to deal with the increasing luminosity and higher beam currents of the KEKB factory.

    DOI: 10.1109/TNS.2004.832716

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  • Observation of large CP violation and evidence for direct CP violation in B0+p- decays 査読

    K Abe, K Abe, N Abe, T Abe, Adachi, I, H Aihara, K Akai, M Akatsu, M Akemoto, Y Asano, T Aso, Aulchenko, V, T Aushev, AM Bakich, Y Ban, S Banerjee, A Bay, Bedny, I, Bizjak, I, A Bondar, A Bozek, M Bracko, TE Browder, Y Chao, KF Chen, BG Cheon, R Chistov, SK Choi, Y Choi, A Chuvikov, S Cole, M Danilov, J Dragic, A Drutskoy, S Eidelman, Eiges, V, Y Enari, D Epifanov, J Flanagan, K Furukawa, N Gabyshev, A Garmash, T Gershon, B Golob, J Haba, K Hara, NC Hastings, H Hayashii, M Hazumi, L Hinz, T Hokuue, Y Hoshi, WS Hou, YB Hsiung, HC Huang, T Iijima, H Ikeda, K Inami, A Ishikawa, H Ishino, R Itoh, H Iwasaki, M Iwasaki, Y Iwasaki, H Kakuno, T Kamitani, JH Kang, JS Kang, P Kapusta, SU Kataoka, N Katayama, H Kawai, T Kawasaki, A Kibayashi, H Kichimi, E Kikutani, HJ Kim, JH Kim, SK Kim, K Kinoshita, P Koppenburg, S Korpar, P Krizan, P Krokovny, S Kumar, A Kuzmin, YJ Kwon, JS Lange, G Leder, SH Lee, YJ Lee, T Lesiak, J Li, A Limosani, SW Lin, D Liventsev, J MacNaughton, F Mandl, D Marlow, H Matsumoto, T Matsumoto, A Matyja, S Michizono, T Mimashi, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, D Mohapatra, GR Moloney, A Murakami, T Nagamine, Y Nagasaka, T Nakadaira, TT Nakamura, E Nakano, M Nakao, H Nakazawa, Z Natkaniec, K Neichi, S Nishida, O Nitoh, S Noguchi, T Nozaki, S Ogawa, Y Ogawa, K Ohmi, T Ohshima, N Ohuchi, K Oide, T Okabe, S Okuno, SL Olsen, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, CW Park, H Park, N Parslow, LE Piilonen, N Root, M Rozanska, H Sagawa, Y Sakai, O Schneider, J Schumann, C Schwanda, AJ Schwartz, S Semenov, K Senyo, H Shibuya, T Shidara, B Shwartz, Sidorov, V, JB Singh, N Soni, R Stamen, S Stanic, M Staric, R Sugahara, K Sumisawa, T Sumiyoshi, K Suzuki, S Suzuki, O Tajima, F Takasaki, K Tamai, N Tamura, M Tanaka, M Tawada, Y Teramoto, T Tomura, T Tsuboyama, T Tsukamoto, S Uehara, T Uglov, K Ueno, Y Unno, S Uno, G Varner, KE Varvell, CC Wang, CH Wang, MZ Wang, Y Watanabe, BD Yabsley, Y Yamada, A Yamaguchi, Y Yamashita, M Yamauchi, H Yanai, HY Yang, J Ying, M Yokoyama, M Yoshida, Y Yusa, CC Zhang, ZP Zhang, T Ziegler, D Zontar, D Zurcher

    PHYSICAL REVIEW LETTERS   93 ( 2 )   1 - 5   2004年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the first observation of CP violation in B(pp)(pp)(pp)(pp)(pp)(0+p- decays based on 152x106 U(4S)B (B) over bar decays collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. We reconstruct a B0+p- CP eigenstate and identify the flavor of the accompanying B meson from its decay products. From the distribution of the time intervals between the two B meson decay points, we obtain A)(=+0.580.15(stat)0.07(syst) and S)(=-1.000.21(stat)0.07(syst). We rule out the CP-conserving case, A)(=S)(=0, at a level of 5.2 standard deviations. We also find evidence for direct CP violation with a significance at or greater than 3.2 standard deviations for any S) value.

    DOI: 10.1103/PhysRevLett.93.021601

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  • Measurement of the CP asymmetry in B -&gt; X-s gamma 査読

    S Nishida, K Abe, K Abe, T Abe, H Aihara, Y Asano, T Aushev, S Bahinipati, AM Bakich, Y Ban, E Banas, A Bay, U Bitenc, Bizjak, I, S Blyth, A Bondar, A Bozek, M Bracko, J Brodzicka, TE Browder, MC Chang, P Chang, KF Chen, BG Cheon, R Chistov, SK Choi, Y Choi, A Chuvikov, S Cole, M Danilov, M Dash, LY Dong, J Dragic, S Eidelman, Eiges, V, Y Enari, D Epifanov, F Fang, S Fratina, A Garmash, T Gershon, G Gokhroo, B Golob, J Haba, T Hara, NC Hastings, H Hayashii, M Hazumi, T Higuchi, L Hinz, Y Hoshi, WS Hou, YB Hsiung, T Iijima, K Inami, A Ishikawa, H Ishino, R Itoh, M Iwasaki, Y Iwasaki, JH Kang, JS Kang, P Kapusta, SU Kataoka, N Katayama, T Kawasaki, H Kichimi, HJ Kim, SK Kim, TH Kim, P Koppenburg, S Korpar, P Krizan, P Krokovny, A Kuzmin, YJ Kwon, JS Lange, G Leder, SE Lee, SH Lee, J Li, SW Lin, J MacNaughton, G Majumder, F Mandl, T Matsumoto, A Matyja, W Mitaroff, H Miyake, R Mizuk, D Mohapatra, GR Moloney, A Murakami, T Nagamine, Y Nagasaka, E Nakano, M Nakao, H Nakazawa, Z Natkaniec, O Nitoh, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, H Ozaki, P Pakhlov, H Palka, CW Park, H Park, M Peters, LE Piilonen, FJ Ronga, M Rozanska, Y Sakai, O Schneider, J Schumann, C Schwanda, S Semenov, R Seuster, ME Sevior, H Shibuya, B Shwartz, A Somov, N Soni, R Stamen, S Stanic, M Staric, A Sugiyama, T Sumiyoshi, S Suzuki, O Tajima, F Takasaki, K Tamai, M Tanaka, Y Teramoto, T Tomura, K Trabelsi, T Tsuboyama, T Tsukamoto, S Uehara, T Uglov, K Ueno, Y Unno, S Uno, Y Ushiroda, G Varner, KE Varvell, CH Wang, MZ Wang, Y Watanabe, BD Yabsley, Y Yamada, A Yamaguchi, Y Yamashita, M Yamauchi, HY Yang, J Ying, ZP Zhang, Zhilich, V, T Ziegler, D Zontar, D Zurcher

    PHYSICAL REVIEW LETTERS   93 ( 3 )   2004年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMERICAN PHYSICAL SOC  

    Direct CP violation in the b--&gt;sgamma process is a sensitive probe of physics beyond the standard model. We report a measurement of the CP asymmetry in B--&gt;X(s)gamma, where the hadronic recoil system X-s is reconstructed using a pseudoreconstruction technique. In this approach there is negligible contamination from b--&gt;dgamma decays, which are expected to have a much larger CP asymmetry. We find A(CP)=0.002+/-0.050(stat)+/-0.030(syst) for B--&gt;X(s)gamma events having recoil mass smaller than 2.1 GeV/c(2). The analysis is based on a data sample of 140 fb(-1) recorded at the Y(4S) resonance with the Belle detector at the KEKB e(+)e(-) storage ring.

    DOI: 10.1103/PhysRevLett.93.031803

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  • Study of CP violating effects in time dependent B-0((B)over-bar(0))-&gt; D-(*)-/+pi(+/-) decays 査読

    TR Sarangi, K Abe, K Abe, T Abe, H Aihara, Y Asano, Aulchenko, V, T Aushev, S Bahinipati, AM Bakich, Y Ban, S Banerjee, U Bitenc, Bizjak, I, S Blyth, A Bondar, M Bracko, TE Browder, MC Chang, P Chang, KF Chen, BG Cheon, R Chistov, SK Choi, Y Choi, A Chuvikov, S Cole, M Danilov, M Dash, LY Dong, A Drutskoy, S Eidelman, Eiges, V, S Fratina, N Gabyshev, A Garmash, T Gershon, G Gokhroo, J Haba, K Hara, NC Hastings, H Hayashii, M Hazumi, T Higuchi, L Hinz, T Hokuue, Y Hoshi, WS Hou, K Inami, A Ishikawa, H Ishino, R Itoh, H Iwasaki, M Iwasaki, JH Kang, JS Kang, P Kapusta, SU Kataoka, H Kawai, T Kawasaki, H Kichimi, HJ Kim, HO Kim, SK Kim, TH Kim, K Kinoshita, S Korpar, P Krizan, P Krokovny, A Kuzmin, YJ Kwon, JS Lange, G Leder, SH Lee, T Lesiak, J Li, SW Lin, D Liventsev, J MacNaughton, F Mandl, D Marlow, T Matsumoto, A Matyja, Y Mikami, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, D Mohapatra, GR Moloney, T Nagamine, Y Nagasaka, T Nakadaira, M Nakao, H Nakazawa, Z Natkaniec, S Nishida, O Nitoh, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, H Park, KS Park, N Parslow, LE Piilonen, M Rozanska, H Sagawa, S Saitoh, Y Sakai, M Satapathy, O Schneider, J Schumann, C Schwanda, AJ Schwartz, S Semenov, K Senyo, ME Sevior, H Shibuya, Sidorov, V, JB Singh, N Soni, R Stamen, S Stanic, M Staric, K Sumisawa, T Sumiyoshi, S Suzuki, SK Swain, O Tajima, F Takasaki, M Tanaka, GN Taylor, T Tomura, K Trabelsi, T Tsuboyama, S Uehara, T Uglov, K Ueno, Y Unno, S Uno, G Varner, KE Varvell, CH Wang, MZ Wang, M Watanabe, BD Yabsley, Y Yamada, A Yamaguchi, Y Yamashita, J Ying, Y Yusa, J Zhang, ZP Zhang, Y Zheng, Zhilich, V, T Ziegler, D Zontar

    PHYSICAL REVIEW LETTERS   93 ( 3 )   1 - 5   2004年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report measurements of time dependent decay rates for B-0((B) over bar (0))--&gt;D((*)-/+)pi(+/-) decays and extraction of CP violation parameters containing phi(3). Using fully reconstructed D((*))pi events from a 140 fb(-1) data sample collected at the Y(4S) resonance, we obtain the CP violation parameters for D(*)pi and Dpi decays, 2R(D)((*))pisin(2phi(1)+phi(3)+/-delta(D)((*))pi), where R(D)((*))pi is the ratio of the magnitudes of the doubly Cabibbo-suppressed and Cabibbo-favored amplitudes, and delta(D)((*))pi is the strong phase difference between them. Under the assumption of delta(D)((*))pi being close to either 0degrees or 180degrees, we obtain \2R(D)(*)pisin(2phi(1)+phi(3))\=0.060+/-0.040(stat)+/-0.019(syst) and \2R(Dpi)sin(2phi(1)+phi(3))\=0.061+/-0.037(stat)+/-0.018(syst).

    DOI: 10.1103/PhysRevLett.93.031802

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  • Measurement of the B -&gt; K*gamma branching fractions and asymmetries 査読

    M Nakao, K Abe, K Abe, T Abe, Adachi, I, H Aihara, M Akatsu, Y Asano, T Aso, Aulchenko, V, T Aushev, S Bahinipati, AM Bakich, Y Ban, A Bay, U Bitenc, Bizjak, I, A Bondar, A Bozek, M Bracko, TE Browder, P Chang, Y Chao, KF Chen, BG Cheon, R Chistov, Y Choi, A Chuvikov, S Cole, M Danilov, M Dash, LY Dong, J Dragic, A Drutskoy, S Eidelman, Eiges, V, Y Enari, F Fang, S Fratina, N Gabyshev, A Garmash, T Gershon, G Gokhroo, B Golob, H Hayashii, M Hazumi, T Higuchi, L Hinz, T Hokuue, Y Hoshi, WS Hou, YB Hsiung, T Iijima, K Inami, A Ishikawa, H Ishino, R Itoh, H Iwasaki, M Iwasaki, JH Kang, JS Kang, N Katayama, H Kawai, T Kawasaki, H Kichimi, HJ Kim, JH Kim, SK Kim, TH Kim, K Kinoshita, P Koppenburg, S Korpar, P Krizan, P Krokovny, A Kuzmin, YJ Kwon, JS Lange, SH Lee, T Lesiak, J Li, A Limosani, SW Lin, J MacNaughton, G Majumder, F Mandl, T Matsumoto, Y Mikami, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, D Mohapatra, GR Moloney, T Mori, T Nagamine, Y Nagasaka, E Nakano, H Nakazawa, K Neichi, S Nishida, O Nitoh, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, W Ostrowicz, P Pakhlov, H Palka, H Park, N Parslow, LS Peak, LE Piilonen, FJ Ronga, M Rozanska, H Sagawa, S Saitoh, Y Sakai, TR Sarangi, O Schneider, J Schumann, C Schwanda, AJ Schwartz, S Semenov, K Senyo, R Seuster, ME Sevior, B Shwartz, JB Singh, N Soni, R Stamen, S Stanic, M Staric, T Sumiyoshi, S Suzuki, O Tajima, F Takasaki, M Tanaka, GN Taylor, Y Teramoto, T Tomura, T Tsuboyama, T Tsukamoto, S Uehara, T Uglov, S Uno, Y Ushiroda, G Varner, KE Varvell, CC Wang, CH Wang, MZ Wang, M Watanabe, Y Yamada, A Yamaguchi, Y Yamashita, M Yamauchi, HY Yang, J Ying, Y Yusa, CC Zhang, J Zhang, ZP Zhang, Zhilich, V, T Ziegler, D Zontar

    PHYSICAL REVIEW D   69 ( 11 )   1 - 9   2004年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMERICAN PHYSICAL SOC  

    We report measurements of the radiative decay B--&gt;K*gamma. The analysis is based on a data sample containing 85.0x10(6) B meson pairs collected by the Belle detector at the KEKB storage ring. We measure branching fractions of B(B-0--&gt;K*(0)gamma)=(4.01+/-0.21+/-0.17)x10(-5) and B(B+--&gt;K*(+)gamma)=(4.25+/-0.31+/-0.24)x10(-5), where the first and second errors are statistical and systematic, respectively. The isospin asymmetry between B-0 and B+ decay widths is measured to be Delta(0+)=+0.012+/-0.044+/-0.026, assuming an equal production rate for (BB)-B-0 $$($) over bar (0) and B+B- pairs from the Y(4S) resonance. We search for a partial rate asymmetry between CP conjugate modes, and find A(CP)(B--&gt;K*gamma)=-0.015+/-0.044+/-0.012.

    DOI: 10.1103/PhysRevD.69.112001

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  • The improved ladder production for the Belle Silicon Vertex Detector (SVD2.1)

    T Ziegler, H Aihara, Y Asano, T Aso, A Bakich, M Barbero, T Browder, MC Chang, Y Chao, KF Chen, S Chidzik, A Chouvikov, J Dalseno, R Dowd, R Fernholz, S Fratina, M Friedl, H Fujii, Y Fujiyama, J Haba, K Hara, T Hara, B Harrop, T Haruyama, K Hayashi, M Hazumi, D Heffernan, T Higuchi, A Igarashi, Y Igarashi, H Ikeda, H Ishino, S Iwaida, T Kameshima, R Kapusta, K Kasami, T Kawasaki, A Kibayashi, S Koike, S Korpar, P Krizan, H Kurashiro, A Kusaka, T Lesiak, D Marlow, H Matsumoto, Y Mikami, H Miyake, GR Moloney, Z Natkaniec, S Nozaki, R Ohkubo, S Okuno, S Ono, Y Onuki, W Ostrowicz, H Ozaki, L Peak, M Pernicka, M Rosen, M Rozanska, N Sato, S Schmid, J Schumann, T Shibata, R Stamen, S Stanic, H Steininger, K Sumisawa, J Suzuki, H Tajima, O Tajima, K Takahashi, F Takasaki, N Tamura, M Tanaka, GN Taylor, K Trabelsi, T Tsuboyama, K Uchida, K Ueno, K Ueno, Y Ushiroda, S Vahsen, G Varner, K Varvell, YS Velikzhanin, CC Wang, MZ Wang, M Watanabe, Y Watanabe, H Yamamoto, Y Yamashita, M Yamauchi, R Yang, Y Yasu, D Zontar

    2004 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD, VOLS 1-7   899 - 903   2004年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:IEEE  

    In autumn 2003 data taking with the new Silicon Vertex Detector SVD2 in Belle started at the KEK-B energy-asymmetric e(+)e(-) collider in Tsukuba, japan. The detector works as expected, however, it was decided to produce replacement ladders for the inner two layers of the vertex detector which are most exposed to the high radiation doses from the beam. The new ladders are not merely reproducing the existing design but include some significant improvements. The readout electronics is designed in a FR4 hybrid board with a new heat transfer scheme in order to dissipate the heat produced in the VA1TA front-end readout chips. The flex circuits that connect the double-sided silicon sensors (DSSD's) with the hybrid boards were redesigned using a 2-layer technique which improved the production quality and lowered their costs significantly. Production and testing will he finished by the end of 2004 and will provide Belle with spare ladders as well as new expertise for possible future projects like e.g. developments for a high luminosity B-factory.

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  • Search for dark matter WIMPs using upward through-going muons in Super-Kamiokande 査読

    Desai, S., Ashie, Y., Fukuda, S., Fukuda, Y., Ishihara, K., Itow, Y., Koshio, Y., Minamino, A., Miura, M., Moriyama, S., Nakahata, M., Namba, T., Nambu, R., Obayashi, Y., Sakurai, N., Shiozawa, M., Suzuki, Y., Takeuchi, H., Takeuchi, Y., Yamada, S., Ishitsuka, M., Kajita, T., Kaneyuki, K., Nakayama, S., Okada, A., Ooyabu, T., Saji, C., Earl, M., Kearns, E., Stone, J.L., Sulak, L.R., Walter, C.W., Wang, W., Goldhaber, M., Barszczak, T., Casper, D., Cravens, J.P., Gajewski, W., Kropp, W.R., Mine, S., Liu, D.W., Smy, M.B., Sobel, H.W., Sterner, C.W., Vagins, M.R., Ganezer, K.S., Hill, J., Keig, W.E., Kim, J.Y., Lim, I.T., Ellsworth, R.W., Tasaka, S., Guillian, G., Kibayashi, A., Learned, J.G., Matsuno, S., Takemori, D., Messier, M.D., Hayato, Y., Ichikawa, A.K., Ishida, T., Ishii, T., Iwashita, T., Kameda, J., Kobayashi, T., Maruyama, T., Nakamura, K., Nitta, K., Oyama, Y., Sakuda, M., Totsuka, Y., Suzuki, A.T., Hasegawa, M., Hayashi, K., Inagaki, T., Kato, I., Maesaka, H., Morita, T., Nakaya, T., Nishikawa, K., Sasaki, T., Ueda, S., Yamamoto, S., Haines, T.J., Dazeley, S., Hatakeyama, S., Svoboda, R., Blaufuss, E., Goodman, J.A., Sullivan, G.W., Turcan, D., Scholberg, K., Habig, Alec, Jung, C.K., Kato, T., Kobayashi, K., Malek, M., Mauger, C., McGrew, C., Sarrat, A., Sharkey, E., Yanagisawa, C., Toshito, T., Mitsuda, C., Miyano, K., Shibata, T., Kajiyama, Y., Nagashima, Y., Takita, M., Yoshida, M., Kim, H.I., Kim, S.B., Yoo, J., Okazawa, H., Ishizuka, T., Choi, Y., Seo, H.K., Gando, Y., Hasegawa, T., Inoue, K., Shirai, J., Suzuki, A., Koshiba, M., Hashimoto, T., Nakajima, Y., Nishijima, K., Harada, T., Ishino, H., Morii, M., Nishimura, R., Watanabe, Y., Kielczewska, D., Zalipska, J., Gran, R., Shiraishi, K.K., Washburn, K., Wilkes, R.J.

    Phys.Rev.D   70 ( 083523 )   083523 - 083523   2004年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.70.083523

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  • Limits on the neutrino magnetic moment using 1496 days of Super-Kamiokande-I solar neutrino data 査読

    Liu, D.W., Ashie, Y., Fukuda, S., Fukuda, Y., Ishihara, K., Itow, Y., Koshio, Y., Minamino, A., Miura, M., Moriyama, S., Nakahata, M., Namba, T., Nambu, R., Obayashi, Y., Sakurai, N., Shiozawa, M., Suzuki, Y., Takeuchi, H., Takeuchi, Y., Yamada, S., Ishitsuka, M., Kajita, T., Kaneyuki, K., Nakayama, S., Okada, A., Ooyabu, T., Saji, C., Desai, S., Earl, M., Kearns, E., Messier, M.D., Stone, J.L., Sulak, L.R., Walter, C.W., Wang, W., Goldhaber, M., Barszczak, T., Casper, D., Cravens, J.P., Gajewski, W., Kropp, W.R., Mine, S., Smy, M.B., Sobel, H.W., Sterner, C.W., Vagins, M.R., Ganezer, K.S., Hill, J., Keig, W.E., Kim, J.Y., Lim, I.T., Ellsworth, R.W., Tasaka, S., Kibayashi, A., Learned, J.G., Matsuno, S., Takemori, D., Hayato, Y., Ichikawa, A.K., Ishida, T., Ishii, T., Iwashita, T., Kameda, J., Kobayashi, T., Maruyama, T., Nakamura, K., Nitta, K., Oyama, Y., Sakuda, M., Totsuka, Y., Suzuki, A.T., Hasegawa, M., Hayashi, K., Inagaki, T., Kato, I., Maesaka, H., Morita, T., Nakaya, T., Nishikawa, K., Sasaki, T., Ueda, S., Yamamoto, S., Haines, T.J., Dazeley, S., Hatakeyama, S., Svoboda, R., Blaufuss, E., Goodman, J.A., Guillian, G., Sullivan, G.W., Turcan, D., Scholberg, K., Habig, Alec, Ackermann, M., Jung, C.K., Kato, T., Kobayashi, K., Martens, K., Malek, M., Mauger, C., McGrew, C., Sharkey, E., Viren, B., Yanagisawa, C., Toshito, T., Mitsuda, C., Miyano, K., Shibata, T., Kajiyama, Y., Nagashima, Y., Takita, M., Yoshida, M., Kim, H.I., Kim, S.B., Yoo, J., Okazawa, H., Ishizuka, T., Choi, Y., Seo, H.K., Gando, Y., Hasegawa, T., Inoue, K., Shirai, J., Suzuki, A., Koshiba, M., Hashimoto, T., Nakajima, Y., Nishijima, K., Ishino, H., Morii, M., Nishimura, R., Watanabe, Y., Kielczewska, D., Zalipska, J., Gran, R., Shiraishi, K.K., Washburn, K., Wilkes, R.J.

    Phys.Rev.Lett.   93 ( 021802 )   021802 - 021802   2004年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevLett.93.021802

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  • Precise measurement of the solar neutrino day / night and seasonal variation in Super-Kamiokande-1 査読

    Smy, M.B., Ashie, Y., Fukuda, S., Fukuda, Y., Ishihara, K., Itow, Y., Koshio, Y., Minamino, A., Miura, M., Moriyama, S., Nakahata, M., Namba, T., Nambu, R., Obayashi, Y., Sakurai, N., Shiozawa, M., Suzuki, Y., Takeuchi, H., Takeuchi, Y., Yamada, S., Ishitsuka, M., Kajita, T., Kaneyuki, K., Nakayama, S., Okada, A., Ooyabu, T., Saji, C., Desai, S., Earl, M., Kearns, E., Messier, M.D., Stone, J.L., Sulak, L.R., Walter, C.W., Wang, W., Goldhaber, M., Barszczak, T., Casper, D., Gajewski, W., Kropp, W.R., Mine, S., Liu, D.W., Sobel, H.W., Vagins, M.R., Gago, A., Ganezer, K.S., Hill, J., Keig, W.E., Kim, J.Y., Lim, I.T., Ellsworth, R.W., Tasaka, S., Kibayashi, A., Learned, J.G., Matsuno, S., Takemori, D., Hayato, Y., Ichikawa, A.K., Ishii, T., Kameda, J., Kobayashi, T., Maruyama, T., Nakamura, K., Nitta, K., Oyama, Y., Sakuda, M., Totsuka, Y., Yoshida, M., Iwashita, T., Suzuki, A.T., Inagaki, T., Kato, I., Nakaya, T., Nishikawa, K., Haines, T.J., Dazeley, S., Hatakeyama, S., Svoboda, R., Blaufuss, E., Goodman, J.A., Guillian, G., Sullivan, G.W., Turcan, D., Scholberg, K., Habig, Alec, Ackermann, M., Jung, C.K., Kato, T., Kobayashi, K., Martens, K., Malek, M., Mauger, C., McGrew, C., Sharkey, E., Viren, B., Yanagisawa, C., Toshito, T., Mitsuda, C., Miyano, K., Shibata, T., Kajiyama, Y., Nagashima, Y., Takita, M., Kim, H.I., Kim, S.B., Yoo, J., Okazawa, H., Ishizuka, T., Choi, Y., Seo, H.K., Etoh, M., Gando, Y., Hasegawa, T., Inoue, K., Shirai, J., Suzuki, A., Koshiba, M., Hatakeyama, Y., Ichikawa, Y., Koike, M., Nishijima, K., Ishino, H., Morii, M., Nishimura, R., Watanabe, Y., Kielczewska, D., Zalipska, J., Berns, H.G., Boyd, S.C., Stachyra, A.L., Wilkes, R.J.

    Phys.Rev.D   69 ( 011104(R) )   011104 - 011104   2004年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.69.011104

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  • Evidence for an oscillatory signature in atmospheric neutrino oscillation 査読

    Ashie, Y., Hosaka, J., Ishihara, K., Itow, Y., Kameda, J., Koshio, Y., Minamino, A., Mitsuda, C., Miura, M., Moriyama, S., Nakahata, M., Namba, T., Nambu, R., Obayashi, Y., Shiozawa, M., Suzuki, Y., Takeuchi, Y., Taki, K., Yamada, S., Ishitsuka, M., Kajita, T., Kaneyuki, K., Nakayama, S., Okada, A., Okumura, K., Ooyabu, T., Saji, C., Takenaga, Y., Desai, S., Kearns, E., Likhoded, S., Stone, J.L., Sulak, L.R., Walter, C.W., Wang, W., Goldhaber, M., Casper, D., Cravens, J.P., Gajewski, W., Kropp, W.R., Liu, D.W., Mine, S., Smy, M.B., Sobel, H.W., Sterner, C.W., Vagins, M.R., Ganezer, K.S., Hill, J., Keig, W.E., Jang, J.S., Kim, J.Y., Lim, I.T., Ellsworth, R.W., Tasaka, S., Guillian, G., Kibayashi, A., Learned, J.G., Matsuno, S., Takemori, D., Messier, M.D., Hayato, Y., Ichikawa, A.K., Ishida, T., Ishii, T., Iwashita, T., Kobayashi, T., Maruyama, T., Nakamura, K., Nitta, K., Oyama, Y., Sakuda, M., Totsuka, Y., Suzuki, A.T., Hasegawa, M., Hayashi, K., Inagaki, T., Kato, I., Maesaka, H., Morita, T., Nakaya, T., Nishikawa, K., Sasaki, T., Ueda, S., Yamamoto, S., Haines, T.J., Dazeley, S., Hatakeyama, S., Svoboda, R., Blaufuss, E., Goodman, J.A., Sullivan, G.W., Turcan, D., Scholberg, K., Habig, Alec, Fukuda, Y., Jung, C.K., Kato, T., Kobayashi, K., Malek, M., Mauger, C., McGrew, C., Sarrat, A., Sharkey, E., Yanagisawa, C., Toshito, T., Miyano, K., Tamura, N., Ishii, J., Kuno, Y., Nagashima, Y., Takita, M., Yoshida, M., Kim, S.B., Yoo, J., Okazawa, H., Ishizuka, T., Choi, Y., Seo, H.K., Gando, Y., Hasegawa, T., Inoue, K., Shirai, J., Suzuki, A., Koshiba, M., Nakajima, Y., Nishijima, K., Harada, T., Ishino, H., Nishimura, R., Watanabe, Y., Kielczewska, D., Zalipska, J., Berns, H.G., Gran, R., Shiraishi, K.K., Stachyra, A., Washburn, K., Wilkes, R.J.

    Phys.Rev.Lett.   93 ( 101801 )   101801 - 101801   2004年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevLett.93.101801

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  • Measurement of time-dependent CP-violating asymmetries in B(0)-&gt;phi K(S)(0), K(+)K(-)K(S)(0), and eta(&apos;)K(S)(0) decays 査読

    K Abe, K Abe, T Abe, Adachi, I, H Aihara, K Akai, M Akatsu, Y Asano, T Aso, T Aushev, S Bahinipati, AM Bakich, Y Ban, S Banerjee, Bedny, I, Bizjak, I, A Bondar, A Bozek, M Bracko, J Brodzicka, TE Browder, MC Chang, P Chang, Y Chao, KF Chen, BG Cheon, R Chistov, SK Choi, Y Choi, YK Choi, A Chuvikov, M Danilov, LY Dong, S Eidelman, Eiges, V, Y Enari, J Flanagan, C Fukunaga, K Furukawa, N Gabyshev, A Garmash, T Gershon, B Golob, R Guo, J Haba, C Hagner, K Hara, T Hara, NC Hastings, H Hayashii, M Hazumi, Higuchi, I, T Higuchi, T Hokuue, Y Hoshi, WS Hou, YB Hsiung, HC Huang, Y Igarashi, T Iijima, H Ikeda, K Inami, A Ishikawa, H Ishino, R Itoh, H Iwasaki, M Iwasaki, Y Iwasaki, T Kamitani, JH Kang, JS Kang, P Kapusta, SU Kataoka, N Katayama, H Kawai, H Kawai, T Kawasaki, H Kichimi, M Kikuchi, E Kikutani, HJ Kim, H Kim, JH Kim, SK Kim, K Kinoshita, H Koiso, P Koppenburg, S Korpar, P Krizan, P Krokovny, S Kumar, YJ Kwon, JS Lange, G Leder, SH Lee, T Lesiak, J Li, A Limosani, SW Lin, D Liventsev, J MacNaughton, F Mandl, D Marlow, M Masuzawa, T Matsumoto, A Matyja, S Michizono, T Mimashi, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, D Mohapatra, T Mori, A Murakami, T Nagamine, Y Nagasaka, T Nakadaira, TT Nakamura, E Nakano, M Nakao, Z Natkaniec, S Nishida, O Nitoh, T Nozaki, S Ogawa, Y Ogawa, K Ohmi, Y Ohnishi, T Ohshima, N Ohuchi, K Oide, T Okabe, S Okuno, SL Olsen, Y Onuki, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, CW Park, H Park, M Peters, LE Piilonen, N Root, M Rozanska, H Sagawa, S Saitoh, Y Sakai, M Satapathy, A Satpathy, O Schneider, J Schumann, C Schwanda, AJ Schwartz, S Semenov, K Senyo, ME Sevior, T Shibata, H Shibuya, T Shidara, B Shwartz, Sidorov, V, JB Singh, N Soni, S Stanic, R Sugahara, A Sugi, T Sugimura, A Sugiyama, K Sumisawa, T Sumiyoshi, K Suzuki, S Suzuki, SY Suzuki, F Takasaki, N Tamura, J Tanaka, M Tanaka, M Tawada, Y Teramoto, T Tomura, K Trabelsi, T Tsuboyama, T Tsukamoto, S Uehara, K Ueno, Y Unno, S Uno, Y Ushiroda, SE Vahsen, G Varner, KE Varvell, CC Wang, CH Wang, JG Wang, MZ Wang, Y Watanabe, E Won, BD Yabsley, Y Yamada, A Yamaguchi, H Yamamoto, N Yamamoto, Y Yamashita, M Yamauchi, H Yanai, H Yang, J Ying, M Yokoyama, M Yoshida, Y Yuan, Y Yusa, CC Zhang, J Zhang, ZP Zhang, Y Zheng, Zhilich, V, D Zontar, D Zurcher

    PHYSICAL REVIEW LETTERS   91 ( 26 )   1 - 6   2003年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present an improved measurement of CP-violation parameters in B(0)--&gt;phiK(S)(0), K(+)K(-)K(S)(0), and eta(&apos;)K(S)(0) decays based on a 140 fb(-1) data sample collected at the Y(4S) resonance with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. One neutral B meson is fully reconstructed in one of the specified decay channels, and the flavor of the accompanying B meson is identified from its decay products. CP-violation parameters for each of the three modes are obtained from the asymmetries in the distributions of the proper-time intervals between the two B decays. We find that the observed CP asymmetry in the B--&gt;phiK(S)(0) decay differs from the standard model (SM) expectation by 3.5 standard deviations, while the other cases are consistent with the SM.

    DOI: 10.1103/PhysRevLett.91.261602

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  • Search for periodic modulations of the solar neutrino flux in Super-Kamiokande-I 査読

    J Yoo, Y Ashie, S Fukuda, Y Fukuda, K Ishihara, Y Itow, Y Koshio, A Minamino, M Miura, S Moriyama, M Nakahata, T Namba, R Nambu, Y Obayashi, N Sakurai, M Shiozawa, Y Suzuki, H Takeuchi, Y Takeuchi, S Yamada, M Ishitsuka, T Kajita, K Kaneyuki, S Nakayama, A Okada, T Ooyabu, C Saji, S Desai, M Earl, E Kearns, MD Messier, JL Stone, LR Sulak, CW Walter, M Goldhaber, T Barszczak, D Casper, W Gajewski, WR Kropp, S Mine, DW Liu, MB Smy, HW Sobel, MR Vagins, A Gago, KS Ganezer, J Hill, WE Keig, JY Kim, IT Lim, RW Ellsworth, S Tasaka, A Kibayashi, JG Learned, S Matsuno, D Takemori, Y Hayato, AK Ichikawa, T Ishii, J Kameda, T Kobayashi, T Maruyama, K Nakamura, K Nitta, Y Oyama, M Sakuda, Y Totsuka, M Yoshida, M Kohama, T Iwashita, AT Suzuki, T Inagaki, Kato, I, T Nakaya, K Nishikawa, TJ Haines, S Dazeley, S Hatakeyama, R Svoboda, E Blaufuss, ML Chen, JA Goodman, G Guillian, GW Sullivan, D Turcan, K Scholberg, A Habig, M Ackermann, CK Jung, T Kato, K Kobayashi, K Martens, M Malek, C Mauger, C McGrew, E Sharkey, B Viren, C Yanagisawa, T Toshito, C Mitsuda, K Miyano, T Shibata, Y Kajiyama, Y Nagashima, M Takita, HI Kim, SB Kim, H Okazawa, T Ishizuka, Y Choi, HK Seo, M Etoh, Y Gando, T Hasegawa, K Inoue, J Shirai, A Suzuki, M Koshiba, Y Hatakeyama, Y Ichikawa, M Koike, K Nishijima, H Ishino, M Morii, R Nishimura, Y Watanabe, D Kielczewska, HG Berns, SC Boyd, AL Stachyra, RJ Wilkes

    PHYSICAL REVIEW D   68 ( 9 )   092002 - 092002   2003年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    A search for periodic modulations of the solar neutrino flux was performed using the Super-Kamiokande-I data taken from 31 May 1996 to 15 July 2001. The detector's capability of measuring the exact time of events, combined with a relatively high yield of solar neutrino events, allows a search for short-time variations in the observed flux. We employed the Lomb test to look for periodic modulations of the observed solar neutrino flux. The obtained periodogram is consistent with statistical fluctuation and no significant periodicity was found.

    DOI: 10.1103/PhysRevD.68.092002

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  • Measurement of branching fractions and polarization in B -&gt;phi K-(*) decays 査読

    KF Chen, A Bozek, K Abe, K Abe, T Abe, Adachi, I, H Aihara, M Akatsu, Y Asano, T Aso, AM Bakich, Y Ban, E Banas, A Bay, PK Behera, Bizjak, I, A Bondar, M Bracko, J Brodzicka, TE Browder, BCK Casey, MC Chang, P Chang, Y Chao, BG Cheon, R Chistov, SK Choi, Y Choi, YK Choi, M Danilov, M Dash, LY Dong, A Drutskoy, S Eidelman, Eiges, V, Y Enari, C Fukunaga, N Gabyshev, A Garmash, T Gershon, B Golob, R Guo, J Haba, C Hagner, F Handa, H Hayashii, M Hazumi, T Higuchi, L Hinz, T Hokuue, Y Hoshi, WS Hou, YB Hsiung, HC Huang, Y Igarashi, T Iijima, K Inami, A Ishikawa, H Ishino, R Itoh, H Iwasaki, Y Iwasaki, HK Jang, M Jones, JH Kang, JS Kang, N Katayama, H Kawai, H Kawai, T Kawasaki, H Kichimi, DW Kim, H Kim, JH Kim, SK Kim, K Kinoshita, P Koppenburg, S Korpar, P Krokovny, A Kuzmin, YJ Kwon, JS Lange, SH Lee, T Lesiak, J Li, A Limosani, SW Lin, J MacNaughton, F Mandl, D Marlow, H Matsumoto, T Matsumoto, A Matyja, W Mitaroff, H Miyake, H Miyata, D Mohapatra, T Mori, T Nagamine, T Nakadaira, E Nakano, M Nakao, JW Nam, Z Natkaniec, S Nishida, O Nitoh, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, W Ostrowicz, H Ozaki, H Palka, CW Park, H Park, KS Park, N Parslow, LS Peak, M Peters, LE Piilonen, N Root, M Rozanska, H Sagawa, S Saitoh, Y Sakai, TR Sarangi, M Satapathy, A Satpathy, O Schneider, J Schumann, AJ Schwartz, S Semenov, K Senyo, ME Sevior, Sidorov, V, JB Singh, S Stanic, M Staric, A Sugi, K Sumisawa, T Sumiyoshi, S Suzuki, T Takahashi, F Takasaki, K Tamai, N Tamura, M Tanaka, Y Teramoto, T Tomura, T Tsuboyama, T Tsukamoto, K Ueno, Y Unno, S Uno, Y Ushiroda, G Varner, KE Varvell, CC Wang, CH Wang, JG Wang, MZ Wang, M Watanabe, Y Watanabe, E Won, BD Yabsley, Y Yamada, A Yamaguchi, Y Yamashita, M Yamauchi, H Yanai, P Yeh, M Yokoyama, Y Yusa, CC Zhang, J Zhang, ZP Zhang, Y Zheng, Zhilich, V, D Zontar

    PHYSICAL REVIEW LETTERS   91 ( 20 )   1 - 6   2003年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present the first measurement of decay amplitudes in B--&gt;phiK(*) and measurements of branching fractions in B--&gt;phiK((*)) decays based on 78.1 fb(-1) of data recorded at the Y(4S) resonance with the Belle detector at the KEKB e(+)e(-) storage ring. The decay amplitudes for the different phiK(*0) helicity states are measured from the angular distributions of final state particles in the transversity basis. The longitudinal and transverse complex amplitudes are \A(0)\(2)=0.43+/-0.09+/-0.04, \A(perpendicular to)\(2)=0.41+/-0.10+/-0.04, arg(A(parallel to))=-2.57+/-0.39+/-0.09, and arg(A(perpendicular to))=0.48+/-0.32+/-0.06. The direct CP-violating asymmetries are found to be consistent with zero.

    DOI: 10.1103/PhysRevLett.91.201801

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  • Evidence for CP-violating asymmetries in B-0 -&gt;pi(+)pi(-) decays and constraints on the CKM angle phi(2) 査読

    K Abe, K Abe, N Abe, T Abe, Adachi, I, H Aihara, K Akai, M Akatsu, M Akemoto, Y Asano, T Aushev, AM Bakich, Y Ban, E Banas, A Bay, Bedny, I, PK Behera, Bizjak, I, A Bondar, A Bozek, M Bracko, J Brodzicka, TE Browder, BCK Casey, P Chang, KF Chen, BG Cheon, R Chistov, SK Choi, Y Choi, YK Choi, M Danilov, J Dragic, A Drutskoy, S Eidelman, Eiges, V, CW Everton, J Flanagan, C Fukunaga, K Furukawa, N Gabyshev, A Garmash, T Gershon, B Golob, R Guo, C Hagner, K Hara, NC Hastings, K Hasuko, H Hayashii, M Hazumi, T Higuchi, L Hinz, T Hojo, T Hokuue, Y Hoshi, WS Hou, YB Hsiung, HC Huang, T Igaki, Y Igarashi, T Iijima, H Ikeda, K Inami, A Ishikawa, H Ishino, R Itoh, H Iwasaki, Y Iwasaki, HK Jang, JS Kang, P Kapusta, SU Kataoka, N Katayama, G Katano, H Kawai, N Kawamura, T Kawasaki, H Kichimi, M Kikuchi, E Kikutani, DW Kim, HJ Kim, HO Kim, H Kim, JH Kim, SK Kim, S Kobayashi, S Korpar, P Krizan, P Krokovny, T Kubo, R Kulasiri, S Kumar, A Kuzmin, YJ Kwon, JS Lange, G Leder, SH Lee, J Li, SW Lin, J MacNaughton, F Mandl, D Marlow, S Matsumoto, T Matsumoto, S Michizono, T Mimashi, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, GR Moloney, T Mori, A Murakami, Y Nagasaka, T Nakadaira, TT Nakamura, E Nakano, M Nakao, H Nakayama, JW Nam, K Neichi, S Nishida, O Nitoh, S Noguchi, T Nozaki, S Ogawa, Y Ogawa, K Ohmi, Y Ohnishi, T Ohshima, N Ohuchi, T Okabe, S Okuno, SL Olsen, Y Onuki, W Ostrowicz, H Ozaki, H Palka, CW Park, H Park, KS Park, LS Peak, JP Perroud, M Peters, LE Piilonen, M Rozanska, K Rybicki, H Sagawa, S Saitoh, Y Sakai, TR Sarangi, M Satapathy, A Satpathy, O Schneider, S Schrenk, J Schumann, C Schwanda, S Semenov, K Senyo, ME Sevior, H Shibuya, T Shidara, B Shwartz, Sidorov, V, JB Singh, S Stanic, M Staric, R Sugahara, A Sugiyama, K Sumisawa, T Sumiyoshi, K Suzuki, S Suzuki, T Takahashi, F Takasaki, K Tamai, N Tamura, J Tanaka, M Tanaka, M Tawada, GN Taylor, Y Teramoto, S Tokuda, T Tomura, K Trabelsi, T Tsuboyama, T Tsukamoto, S Uehara, Y Unno, S Uno, N Uozaki, SE Vahsen, G Varner, KE Varvell, CC Wang, CH Wang, JG Wang, MZ Wang, Y Watanabe, E Won, BD Yabsley, Y Yamada, A Yamaguchi, H Yamamoto, Y Yamashita, Y Yamashita, M Yamauchi, M Yokoyama, M Yoshida, CC Zhang, ZP Zhang, Zhilich, V, D Zontar

    PHYSICAL REVIEW D   68 ( 1 )   1 - 15   2003年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present an improved measurement of CP-violating asymmetries in B-0--&gt;pi(+)pi(-) decays based on a 78 fb(-1) data sample collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We reconstruct one neutral B meson as a B-0--&gt;pi(+)pi(-) CP eigenstate and identify the flavor of the accompanying B meson from inclusive properties of its decay products. We apply an unbinned maximum likelihood fit to the distribution of the time intervals between the two B meson decay points. The fit yields the CP-violating asymmetry amplitudes A(pipi) = +0.77 +/-0.27(stat) +/-0.08(syst) and S-pipi = -1.23+/-0.41(stat) (+0.08)(-0.07)(syst), where the statistical uncertainties are determined from the Monte Carlo pseudoexperiments. We obtain confidence intervals for CP-violating asymmetry parameters A(pipi) and S-pipi based on a frequentist approach. We rule out the CP-conserving case, A(pipi) = S-pipi = 0, at the 99.93% confidence level. We discuss how these results constrain the value of the Cabibbo-Kobayashi-Maskawa (CKM) angle phi(2).

    DOI: 10.1103/PhysRevD.68.012001

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  • Measurement of the B-0-(B)over-bar(0) mixing rate with B-0((B)over-bar(0))-> D*(-/+)pi(+/-) partial reconstruction 査読

    Y Zheng, TE Browder, K Abe, K Abe, R Abe, Adachi, I, H Aihara, M Akatsu, Y Asano, T Aso, T Aushev, AM Bakich, Y Ban, A Bay, PK Behera, A Bondar, A Bozek, M Bracko, BCK Casey, Y Chao, KF Chen, BG Cheon, R Chistov, Y Choi, YK Choi, M Danilov, S Eidelman, Eiges, V, Y Enari, C Fukunaga, N Gabyshev, A Garmash, T Gershon, B Golob, C Hagner, F Handa, T Hara, NC Hastings, K Hasuko, M Hazumi, EM Heenan, Higuchi, I, L Hinz, T Hokuue, Y Hoshi, WS Hou, HC Huang, Y Igarashi, T Iijima, K Inami, H Ishino, H Iwasaki, M Iwasaki, HK Jang, JH Kang, JS Kang, SU Kataoka, N Katayama, H Kawai, Y Kawakami, N Kawamura, T Kawasaki, H Kichimi, DW Kim, HJ Kim, HO Kim, H Kim, JH Kim, SK Kim, K Kinoshita, S Kobayashi, S Korpar, P Krokovny, A Kuzmin, YJ Kwon, G Leder, SH Lee, J Li, D Liventsev, RS Lu, J MacNaughton, G Majumder, S Matsumoto, T Matsumoto, W Mitaroff, Y Miyabayashi, H Miyake, H Miyata, T Nagamine, Y Nagasaka, T Nakadaira, E Nakano, M Nakao, H Nakazawa, JW Nam, Z Natkaniec, S Nishida, O Nitoh, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, Y Onuki, W Ostrowicz, H Ozaki, CW Park, H Park, KS Park, JP Perroud, LE Piilonen, FJ Ronga, K Rybicki, H Sagawa, Y Sakai, TR Sarangi, M Satapathy, A Satpathy, O Schneider, S Schrenk, C Schwanda, S Semenov, R Seuster, ME Sevior, H Shibuya, Sidorov, V, JB Singh, N Soni, S Stanic, M Staric, A Sugi, K Sumisawa, T Sumiyoshi, S Suzuki, SY Suzuki, T Takahashi, F Takasaki, K Tamai, N Tamura, J Tanaka, M Tanaka, GN Taylor, Y Teramoto, S Tokuda, T Tomura, T Tsuboyama, T Tsukamoto, S Uehara, K Ueno, S Uno, G Varner, KE Varvell, CC Wang, CH Wang, JG Wang, Y Watanabe, E Won, BD Yabsley, Y Yamada, A Yamaguchi, Y Yamashita, M Yamauchi, H Yanai, M Yokoyama, Y Yuan, CC Zhang, ZP Zhang, Zhilich, V, D Zontar

    PHYSICAL REVIEW D   67 ( 9 )   1 - 14   2003年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMERICAN PHYSICAL SOC  

    We report a measurement of the B-0-(B) over bar (0) mixing parameter Deltam(d) based on a 29.1 fb(-1) sample of Y(4S) resonance decays collected by the Belle detector at the KEKB asymmetric e(+)e(-) collider. We use events with a partially reconstructed B-0((B) over bar (0)) --> D*(-/+)pi(+/-) candidate and where the flavor of the accompanying B meson is identified by the charge of the lepton from a B-0((B) over bar (0)) --> X(-/+)l(+/-)nu decay. The proper-time difference between the two B mesons is determined from the distance between the two decay vertices. From a simultaneous fit to the proper-time distributions for the same-flavor (B-0((B) over bar (0)), l(+/-)) and opposite-flavor (B-0((B) over bar (0)), l(-/+)) event samples, we measure the mass difference between the two mass eigenstates of the neutral B meson to be Deltam(d)=(0.509 +/- 0.017 (stat) +/- 0.020 (syst)) ps(-1).

    DOI: 10.1103/PhysRevD.67.092004

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  • Studies of the decay B-+/--&gt; DCPK +/- 査読

    K Abe, K Abe, N Abe, R Abe, T Abe, BS Ahn, H Aihara, M Akatsu, Y Asano, T Aso, Aulchenko, V, T Aushev, AM Bakich, Y Ban, PK Behera, Bizjak, I, A Bondar, A Bozek, M Bracko, TE Browder, BCK Casey, MC Chang, P Chang, Y Chao, BG Cheon, R Chistov, Y Choi, YK Choi, M Danilov, LY Dong, A Drutskoy, S Eidelman, Eiges, V, Y Enari, F Fang, H Fujii, C Fukunaga, N Gabyshev, A Garmash, T Gershon, B Golob, A Gordon, R Guo, J Haba, T Hara, Y Harada, H Hayashii, M Hazumi, EM Heenan, Higuchi, I, T Higuchi, L Hinz, T Hokuue, Y Hoshi, Hou, SR, WS Hou, SC Hsu, HC Huang, T Igaki, Y Igarashi, T Iijima, K Inami, A Ishikawa, H Ishino, R Itoh, H Iwasaki, Y Iwasaki, HK Jang, JH Kang, JS Kang, N Katayama, Y Kawakami, N Kawamura, T Kawasaki, H Kichimi, DW Kim, H Kim, HJ Kim, HO Kim, H Kim, SK Kim, TH Kim, K Kinoshita, S Korpar, P Krizan, P Krokovny, R Kulasiri, S Kumar, A Kuzmin, YJ Kwon, JS Lange, G Leder, SH Lee, J Li, A Limosani, D Liventsev, RS Lu, J MacNaughton, G Majumder, F Mandl, D Marlow, T Matsuishi, S Matsumoto, T Matsumoto, W Mitaroff, K Miyabayashi, Y Miyabayashi, H Miyake, H Miyata, GR Moloney, T Mori, A Murakami, T Nagamine, Y Nagasaka, T Nakadaira, E Nakano, M Nakao, JW Nam, Z Natkaniec, K Neichi, S Nishida, O Nitoh, S Noguchi, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, Y Onuki, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, CW Park, H Park, LS Peak, JP Perroud, M Peters, LE Piilonen, JL Rodriguez, FJ Ronga, N Root, M Rozanska, K Rybicki, H Sagawa, S Saitoh, Y Sakai, M Satapathy, A Satpathy, O Schneider, S Schrenk, C Schwanda, S Semenov, K Senyo, R Seuster, ME Sevior, H Shibuya, B Shwartz, Sidorov, V, JB Singh, S Stanic, M Staric, A Sugi, A Sugiyama, K Sumisawa, T Sumiyoshi, K Suzuki, S Suzuki, SY Suzuki, SK Swain, T Takahashi, F Takasaki, K Tamai, N Tamura, J Tanaka, M Tanaka, GN Taylor, Y Teramoto, S Tokuda, SN Tovey, K Trabelsi, T Tsuboyama, T Tsukamoto, S Uehara, K Ueno, Y Unno, S Uno, Y Ushiroda, G Varner, KE Varvell, CC Wang, CH Wang, JG Wang, MZ Wang, Y Watanabe, E Won, BD Yabsley, Y Yamada, A Yamaguchi, Y Yamashita, M Yamauchi, H Yanai, P Yeh, Y Yuan, Y Yusa, J Zhang, ZP Zhang, Y Zheng, Zhilich, V, D Zontar

    PHYSICAL REVIEW LETTERS   90 ( 13 )   1 - 5   2003年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report studies of the Cabibbo-suppressed decay B+/- --&gt; DCPK+/-, where D-CP denotes CP eigenstates of the D-0 - (D) over bar (0) system. The analysis is based on a 29.1 fb(-1) sample collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric e(+)e(-) storage ring. We measure ratios of branching fractions, relative to Cabibbo-favored B+/---&gt;D(CP)pi+/-, of B&gt;(B- --&gt; D1K-)/B(B- --&gt; D(1)pi(-)) = 0.125 +/-0.036 +/- 0.010 and B(B- --&gt; D2K-)/B(B- --&gt; D(2)pi(-)) = 0.119 +/- 0.028 +/- 0.006; the index 1 (2) denotes the CP = +1 (-1) eigenstate. We also extract the partial rate asymmetries for B+/- --&gt; DCPK+/-, finding A(1) = 0.29 +/- 0.26 +/- 0.05 and A(2) = -0.22 +/- 0.24 +/- 0.04.

    DOI: 10.1103/PhysRevLett.90.131803

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  • The Super-Kamiokande detector 査読

    S Fukuda, Y Fukuda, T Hayakawa, E Ichihara, M Ishitsuka, Y Itow, T Kajita, J Kameda, K Kaneyuki, S Kasuga, K Kobayashi, Y Kobayashi, Y Koshio, M Miura, S Moriyama, M Nakahata, S Nakayama, T Namba, Y Obayashi, A Okada, M Oketa, K Okumura, T Oyabu, N Sakurai, M Shiozawa, Y Suzuki, Y Takeuchi, T Toshito, Y Totsuka, S Yamada, S Desai, M Earl, JT Hong, E Kearns, M Masuzawa, MD Messier, JL Stone, LR Sulak, CW Walter, W Wang, K Scholberg, T Barszczak, D Casper, DW Liu, W Gajewski, PG Halverson, J Hsu, WR Kropp, S Mine, LR Price, F Reines, M Smy, HW Sobel, MR Vagins, KS Ganezer, WE Keig, RW Ellsworth, S Tasaka, JW Flanagan, A Kibayashi, JG Learned, S Matsuno, VJ Stenger, Y Hayato, T Ishii, A Ichikawa, J Kanzaki, T Kobayashi, T Maruyama, K Nakamura, Y Oyama, A Sakai, M Sakuda, O Sasaki, S Echigo, T Iwashita, M Kohama, AT Suzuki, M Hasegawa, T Inagaki, Kato, I, H Maesaka, T Nakaya, K Nishikawa, S Yamamoto, TJ Haines, BK Kim, R Sanford, R Svoboda, E Blaufuss, ML Chen, Z Conner, JA Goodman, E Guillian, GW Sullivan, D Turcan, A Habig, M Ackerman, F Goebel, J Hill, CK Jung, T Kato, D Kerr, M Malek, K Martens, C Mauger, C McGrew, E Sharkey, B Viren, C Yanagisawa, W Doki, S Inaba, K Ito, M Kirisawa, M Kitaguchi, C Mitsuda, K Miyano, C Saji, M Takahata, M Takahashi, K Higuchi, Y Kajiyama, A Kusano, Y Nagashima, K Nitta, M Takita, T Yamaguchi, M Yoshida, HI Kim, SB Kim, J Yoo, H Okazawa, M Etoh, K Fujita, Y Gando, A Hasegawa, T Hasegawa, S Hatakeyama, K Inoue, K Ishihara, T Iwamoto, M Koga, Nishiyama, I, H Ogawa, J Shirai, A Suzuki, T Takayama, F Tsushima, M Koshiba, Y Ichikawa, T Hashimoto, Y Hatakeyama, M Koike, T Horiuchi, M Nemoto, K Nishijima, H Takeda, H Fujiyasu, T Futagami, H Ishino, Y Kanaya, M Morii, H Nishihama, H Nishimura, T Suzuki, Y Watanabe, D Kielczewska, U Golebiewska, HG Berns, SB Boyd, RA Doyle, JS George, AL Stachyra, LL Wai, RJ Wilkes, KK Young, H Kobayashi

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   501 ( 2-3 )   418 - 462   2003年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

    Super-Kamiokande is the world's largest water Cherenkov detector, with net mass 50,000 tons. During the period April, 1996 to July, 2001, Super-Kamiokande I collected 1678 live-days of data, observing neutrinos from the Sun, Earth's atmosphere, and the K2K long-baseline neutrino beam with high efficiency. These data provided crucial information for our current understanding of neutrino oscillations, as well as setting stringent limits on nucleon decay. In this paper, we describe the detector in detail, including its site, configuration, data acquisition equipment, online and offline software, and calibration systems which were used during Super-Kamiokande I. (C) 2003 Elsevier Science B.V. All rights reserved.

    DOI: 10.1016/S0168-9002(03)00425-X

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  • Tracking performance of the scintillating fiber detector in the K2K experiment 査読

    BJ Kim, T Iwashita, T Ishida, EJ Jeon, H Yokoyama, S Aoki, HG Berns, HC Bhang, S Boyd, K Fujii, T Hara, Y Hayato, J Hill, T Ishii, H Ishino, CK Jung, E Kearns, HI Kim, JH Kim, JY Kim, SB Kim, T Kobayashi, G Kume, S Matsuno, S Mine, K Nakamura, M Nakamura, K Nishikawa, M Onchi, T Otaki, Y Oyama, H Park, M Sakuda, K Sato, K Scholberg, E Sharkey, JL Stone, A Suzuki, K Takenaka, N Tamura, Y Tanaka, M Takatsuki, CW Walter, J Wilkes, J Yoo, M Yoshida

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   497 ( 2-3 )   450 - 466   2003年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

    The K2K long-baseline neutrino oscillation experiment uses a Scintillating Fiber Detector (SciFi) to reconstruct charged particles produced in neutrino interactions in the near detector. We describe the track reconstruction algorithm and the performance of the SciFi after 3 years of operation. (C) 2002 Elsevier Science B.V. All rights reserved.

    DOI: 10.1016/S0168-9002(02)01980-0

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  • Measurement of the electroweak penguin process B -&gt; X(s)l;(+)l(-) 査読

    J Kaneko, K Abe, K Abe, T Abe, Adachi, I, BS Ahn, H Aihara, M Akatsu, Y Asano, T Aso, Aulchenko, V, T Aushev, AM Bakich, Y Ban, E Banas, W Bartel, A Bay, PK Behera, A Bondar, A Bozek, M Bracko, J Brodzicka, TE Browder, BCK Casey, P Chang, Y Chao, KF Chen, BG Cheon, R Chistov, Y Choi, YK Choi, M Danilov, LY Dong, S Eidelman, Eiges, V, Y Enari, CW Everton, F Fang, H Fujii, C Fukunaga, N Gabyshev, A Garmash, T Gershon, R Guo, J Haba, F Handa, T Hara, Y Harada, NC Hastings, H Hayashii, M Hazumi, EM Heenan, Higuchi, I, T Higuchi, L Hinz, T Hojo, Y Hoshi, WS Hou, HC Huang, T Igaki, Y Igarashi, T Iijima, K Inami, A Ishikawa, H Ishino, R Itoh, H Iwasaki, Y Iwasaki, HK Jang, JH Kang, JS Kang, N Katayama, H Kawai, Y Kawakami, N Kawamura, T Kawasaki, H Kichimi, DW Kim, H Kim, HJ Kim, HO Kim, H Kim, SK Kim, K Kinoshita, S Kobayashi, S Korpar, P Krizan, P Krokovny, R Kulasiri, S Kumar, YJ Kwon, JS Lange, G Leder, SH Lee, J Li, A Limosani, RS Lu, J MacNaughton, G Majumder, F Mandl, D Marlow, S Matsumoto, T Matsumoto, W Mitaroff, K Miyabayashi, Y Miyabayashi, H Miyake, GR Moloney, T Mori, T Nagamine, Y Nagasaka, T Nakadaira, E Nakano, M Nakao, JW Nam, K Neichi, S Nishida, O Nitoh, S Noguchi, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, Y Onuki, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, CW Park, H Park, KS Park, JP Perroud, M Peters, LE Piilonen, N Root, K Rybicki, H Sagawa, Y Sakai, H Sakamoto, M Satapathy, A Satpathy, O Schneider, S Schrenk, C Schwanda, S Semenov, K Senyo, R Seuster, H Shibuya, B Shwartz, Sidorov, V, JB Singh, N Soni, S Stanic, K Sumisawa, T Sumiyoshi, K Suzuki, S Suzuki, SY Suzuki, SK Swain, H Tajima, T Takahashi, F Takasaki, K Tamai, N Tamura, J Tanaka, M Tanaka, GN Taylor, Y Teramoto, S Tokuda, M Tomoto, T Tomura, K Trabelsi, W Trischuk, T Tsuboyama, T Tsukamoto, S Uehara, K Ueno, S Uno, Y Ushiroda, G Varner, KE Varvell, CC Wang, CH Wang, JG Wang, MZ Wang, Y Watanabe, E Won, BD Yabsley, Y Yamada, A Yamaguchi, Y Yamashita, M Yamauchi, H Yanai, J Yashima, M Yokoyama, Y Yuan, Y Yusa, CC Zhang, J Zhang, ZP Zhang, Y Zheng, Zhilich, V, D Zontar

    PHYSICAL REVIEW LETTERS   90 ( 2 )   1 - 6   2003年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the first measurement of the branching fraction for the inclusive decay B--&gt;X(s)l(+)l(-), where . is either an electron or a muon, and X-s is a hadronic recoil system that contains an s quark. We analyzed a data sample of 65.4x10(6) B meson pairs collected with the Belle detector at the KEKB e(+)e(-) asymmetric-energy collider. We find B(B--&gt;X(s)l(+)l(-))=[6.1 +/-1.4(stat) (+1.4)(-1.1)(syst)]x10(-6) for dilepton masses greater than 0.2 GeV/c(2).

    DOI: 10.1103/PhysRevLett.90.021801

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  • Search for the electric dipole moment of the tau lepton 査読

    K Inami, K Abe, K Abe, R Abe, T Abe, Adachi, I, H Aihara, M Akatsu, Y Asano, T Aso, Aulchenko, V, T Aushev, AM Bakich, Y Ban, E Banas, PK Behera, Bizjak, I, A Bondar, TE Browder, P Chang, Y Chao, BG Cheon, R Chistov, Y Choi, YK Choi, LY Dong, S Eidelman, Eiges, V, Y Enari, C Fukunaga, N Gabyshev, A Garmash, T Gershon, B Golob, C Hagner, F Handa, T Hara, H Hayashii, M Hazumi, Higuchi, I, T Higuchi, T Hokuue, Y Hoshi, WS Hou, HC Huang, T Igaki, T Iijima, A Ishikawa, H Ishino, R Itoh, H Iwasaki, HK Jang, JH Kang, JS Kang, N Katayama, H Kawai, Y Kawakami, N Kawamura, T Kawasaki, H Kichimi, HO Kim, H Kim, JH Kim, SK Kim, S Korpar, P Krokovny, R Kulasiri, A Kuzmin, YJ Kwon, JS Lange, G Leder, SH Lee, J Li, D Liventsev, RS Lu, J MacNaughton, F Mandl, T Matsuishi, S Matsumoto, T Matsumoto, W Mitaroff, H Miyake, H Miyata, T Nagamine, Y Nagasaka, T Nakadaira, E Nakano, M Nakao, JW Nam, S Nishida, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, W Ostrowicz, H Ozaki, P Pakhlov, H Park, KS Park, LS Peak, JP Perroud, LE Piilonen, K Rybicki, H Sagawa, S Saitoh, Y Sakai, M Satapathy, O Schneider, S Semenov, K Senyo, ME Sevior, H Shibuya, B Shwartz, Sidorov, V, JB Singh, N Soni, S Stanic, M Staric, A Sugi, A Sugiyama, K Sumisawa, T Sumiyoshi, S Suzuki, SY Suzuki, T Takahashi, F Takasaki, K Tamai, N Tamura, J Tanaka, M Tanaka, GN Taylor, Y Teramoto, S Tokuda, T Tomura, T Tsuboyama, T Tsukamoto, S Uehara, Y Unno, S Uno, G Varner, KE Varvell, CC Wang, Y Watanabe, BD Yabsley, Y Yamada, A Yamaguchi, Y Yamashita, Y Yusa, ZP Zhang, Zhilich, V, D Zontar

    PHYSICS LETTERS B   551 ( 1-2 )   16 - 26   2003年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

    We have searched for a CP violation signature arising from an electric dipole moment (d(tau)) of the tau lepton in the e(+)e(-) --&gt; tau(+)tau(-) reaction. Using an optimal observable method and 29.5 fb(-1) of data collected with the Belle detector at the KEKB collider at roots- = 10.58 GeV, we find Re(d(tau)) = (1.15 +/- 1.70) x 10(-17) e cm and Im(d(tau)) = (-0.83+/-0.86) &lt; 0.8 x 10(-17) e cm and set the 95% confidence level limits -2.2 x 10(-17) &lt; Re(dT) &lt; 4.5 x 10(-17) e cm and -2.5 x 10(-17) &lt; Im(dr) &lt; 0.8 x 10(-17) e cm. (C) 2002 Elsevier Science B.V. All rights reserved.

    DOI: 10.1016/S0370-2693(02)02984-2

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  • Search for anti-nu(e) from the sun at Super-Kamiokande I 査読

    Gando, Y., Fukuda, S., Fukuda, Y., Ishitsuka, M., Itow, Y., Kajita, T., Kameda, J., Kaneyuki, K., Kobayashi, K., Koshio, Y., Miura, M., Moriyama, S., Nakahata, M., Nakayama, S., Namba, T., Obayashi, Y., Okada, A., Ooyabu, T., Saji, C., Sakurai, N., Shiozawa, M., Suzuki, Y., Takeuchi, H., Takeuchi, Y., Totsuka, Y., Yamada, S., Desai, S., Earl, M., Kearns, E., Messier, M.D., Stone, J.L., Sulak, L.R., Walter, C.W., Goldhaber, M., Barszczak, T., Casper, D., Gajewski, W., Kropp, W.R., Mine, S., Liu, D.W., Smy, M.B., Sobel, H.W., Vagins, M.R., Gago, A., Ganezer, K.S., Hill, J., Keig, W.E., Ellsworth, R.W., Tasaka, S., Kibayashi, A., Learned, J.G., Matsuno, S., Takemori, D., Hayato, Y., Ichikawa, A.K., Ishii, T., Kobayashi, T., Maruyama, T., Nakamura, K., Oyama, Y., Sakuda, M., Yoshida, M., Kohama, M., Iwashita, T., Suzuki, A.T., Inagaki, T., Kato, I., Nakaya, T., Nishikawa, K., Haines, T.J., Dazeley, S., Hatakeyama, S., Svoboda, R., Blaufuss, E., Chen, M.L., Goodman, J.A., Guillian, G., Sullivan, G.W., Turcan, D., Scholberg, K., Habig, Alec, Ackermann, M., Jung, C.K., Martens, K., Malek, M., Mauger, C., McGrew, C., Sharkey, E., Viren, B., Yanagisawa, C., Toshito, T., Mitsuda, C., Miyano, K., Shibata, T., Kajiyama, Y., Nagashima, Y., Nitta, K., Takita, M., Kim, H.I., Kim, S.B., Yoo, J., Okazawa, H., Ishizuka, T., Etoh, M., Hasegawa, T., Inoue, K., Ishihara, K., Shirai, J., Suzuki, A., Koshiba, M., Hatakeyama, Y., Ichikawa, Y., Koike, M., Nishijima, K., Ishino, H., Morii, M., Nishimura, R., Watanabe, Y., Kielczewska, D., Berns, H.G., Boyd, S.C., Stachyra, A.L., Wilkes, R.J.

    Phys.Rev.Lett.   90 ( 171302 )   171302 - 171302   2003年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevLett.90.171302

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  • Search for supernova relic neutrinos at SUPER-KAMIOKANDE 査読

    Malek, M., Morii, M., Fukuda, S., Fukuda, Y., Ishitsuka, M., Itow, Y., Kajita, T., Kameda, J., Kaneyuki, K., Kobayashi, K., Koshio, Y., Miura, M., Moriyama, S., Nakahata, M., Nakayama, S., Namba, T., Okada, A., Ooyabu, T., Saji, C., Sakurai, N., Shiozawa, M., Suzuki, Y., Takeuchi, H., Takeuchi, Y., Totsuka, Y., Yamada, S., Desai, S., Earl, M., Kearns, E., Messier, M.D., Stone, J.L., Sulak, L.R., Walter, C.W., Goldhaber, M., Barszczak, T., Casper, D., Gajewski, W., Kropp, W.R., Mine, S., Liu, D.W., Smy, M.B., Sobel, H.W., Vagins, M.R., Gago, A., Ganezer, K.S., Keig, W.E., Ellsworth, R.W., Tasaka, S., Kibayashi, A., Learned, J.G., Matsuno, S., Takemori, D., Hayato, Y., Ishii, T., Kobayashi, T., Maruyama, T., Nakamura, K., Obayashi, Y., Oyama, Y., Sakuda, M., Yoshida, M., Kohama, M., Iwashita, T., Suzuki, A.T., Ichikawa, A., Inagaki, T., Kato, I., Nakaya, T., Nishikawa, K., Haines, T.J., Dazeley, S., Hatakeyama, S., Svoboda, R., Blaufuss, E., Chen, M.L., Goodman, J.A., Guillian, G., Sullivan, G.W., Turcan, D., Scholberg, K., Habig, Alec, Ackermann, M., Hill, J., Jung, C.K., Martens, K., Mauger, C., McGrew, C., Sharkey, E., Viren, B., Yanagisawa, C., Toshito, T., Mitsuda, C., Miyano, K., Shibata, T., Kajiyama, Y., Nagashima, Y., Nitta, K., Takita, M., Kim, H.I., Kim, S.B., Yoo, J., Okazawa, H., Ishizuka, T., Etoh, M., Gando, Y., Hasegawa, T., Inoue, K., Ishihara, K., Shirai, J., Suzuki, A., Koshiba, M., Hatakeyama, Y., Ichikawa, Y., Koike, M., Nishijima, K., Ishino, H., Nishimura, R., Watanabe, Y., Kielczewska, D., Berns, H.G., Boyd, S.C., Stachyra, A.L., Wilkes, R.J.

    Phys.Rev.Lett.   90 ( 061101 )   061101 - 061101   2003年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevLett.90.061101

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  • Observation of Ds+K- and evidence for D-s(+)pi(-) final states in neutral B decays 査読

    P Krokovny, K Abe, K Abe, T Abe, Adachi, I, BS Ahn, H Aihara, M Akatsu, Y Asano, T Aso, Aulchenko, V, T Aushev, AM Bakich, Y Ban, E Banas, A Bay, Bedny, I, PK Behera, Bizjak, I, A Bondar, A Bozek, M Bracko, J Brodzicka, TE Browder, BCK Casey, P Chang, Y Chao, KF Chen, BG Cheon, R Chistov, SK Choi, Y Choi, M Danilov, LY Dong, A Drutskoy, S Eidelman, Eiges, V, Y Enari, CW Everton, F Fang, C Fukunaga, N Gabyshev, A Garmash, T Gershon, B Golob, A Gordon, R Guo, J Haba, K Hanagaki, F Handa, Y Harada, H Hayashii, M Hazumi, EM Heenan, T Higuchi, L Hinz, T Hojo, T Hokuue, Y Hoshi, WS Hou, HC Huang, T Igaki, T Iijima, K Inami, A Ishikawa, H Ishino, R Itoh, H Iwasaki, HK Jang, J Kaneko, JH Kang, JS Kang, N Katayama, H Kawai, Y Kawakami, N Kawamura, T Kawasaki, H Kichimi, DW Kim, H Kim, HJ Kim, HO Kim, H Kim, SK Kim, K Kinoshita, S Kobayashi, S Korpar, P Krizan, R Kulasiri, S Kumar, A Kuzmin, YJ Kwon, JS Lange, G Leder, SH Lee, J Li, A Limosani, D Liventsev, RS Lu, J MacNaughton, G Majumder, F Mandl, D Marlow, T Matsuishi, S Matsumoto, T Matsumoto, W Mitaroff, K Miyabayashi, Y Miyabayashi, H Miyake, H Miyata, GR Moloney, T Mori, A Murakami, T Nagamine, Y Nagasaka, T Nakadaira, E Nakano, M Nakao, H Nakazawa, JW Nam, Z Natkaniec, K Neichi, S Nishida, O Nitoh, T Nozaki, S Ogawa, T Ohshima, T Okabe, SL Olsen, Y Onuki, W Ostrowicz, H Ozaki, P Pakhlov, CW Park, H Park, JP Perroud, M Peters, LE Piilonen, FJ Ronga, N Root, K Rybicki, H Sagawa, S Saitoh, Y Sakai, H Sakamoto, M Satapathy, A Satpathy, O Schneider, C Schwanda, S Semenov, K Senyo, H Shibuya, B Shwartz, Sidorov, V, JB Singh, S Stanic, M Staric, A Sugi, A Sugiyama, K Sumisawa, T Sumiyoshi, K Suzuki, S Suzuki, SY Suzuki, SK Swain, T Takahashi, F Takasaki, K Tamai, N Tamura, J Tanaka, M Tanaka, GN Taylor, Y Teramoto, S Tokuda, T Tomura, K Trabelsi, T Tsuboyama, T Tsukamoto, S Uehara, K Ueno, Y Unno, S Uno, Y Ushiroda, G Varner, KE Varvell, CC Wang, CH Wang, JG Wang, MZ Wang, Y Watanabe, E Won, BD Yabsley, Y Yamada, A Yamaguchi, Y Yamashita, M Yamauchi, H Yanai, J Yashima, Y Yuan, Y Yusa, CC Zhang, J Zhang, ZP Zhang, Y Zheng, Zhilich, V, D Zontar

    PHYSICAL REVIEW LETTERS   89 ( 23 )   1 - 6   2002年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the first observation of a B meson decay that is not accessible by a direct spectator process. The channel (B) over bar (0)--&gt;Ds+K- is found in a sample of 85x10(6) B (B) over bar events, collected with the Belle detector at KEKB, with a branching fraction B((B) over bar (0)--&gt;Ds+K-)=(4.6(-1.1)(+1.2)+/-1.3)x10(-5). We also obtain evidence for the B-0--&gt;D(s)(+)pi(-) decay with branching fraction B(B-0--&gt;D(s)(+)pi(-))=(2.4(-0.8)(+1.0)+/-0.7)x10(-5). This value may be used to extract a model-dependent value of \V-ub\.

    DOI: 10.1103/PhysRevLett.89.231804

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  • Radiative B meson decays into K pi gamma and K pi pi gamma final states 査読

    S Nishida, M Nakao, K Abe, K Abe, T Abe, BS Ahn, H Aihara, M Akatsu, Y Asano, T Aushev, AM Bakich, Y Ban, E Banas, W Bartel, A Bay, Bedny, I, A Bondar, A Bozek, M Bracko, J Brodzicka, TE Browder, BCK Casey, P Chang, Y Chao, BG Cheon, R Chistov, SK Choi, Y Choi, M Danilov, LY Dong, A Drutskoy, S Eidelman, Eiges, V, Y Enari, C Fukunaga, N Gabyshev, T Gershon, A Gordon, K Gotow, R Guo, J Haba, T Hara, H Hayashii, M Hazumi, EM Heenan, Higuchi, I, T Higuchi, T Hojo, T Hokuue, Y Hoshi, Hou, SR, WS Hou, SC Hsu, HC Huang, T Igaki, T Iijima, K Inami, A Ishikawa, H Ishino, R Itoh, M Iwamoto, H Iwasaki, Y Iwasaki, P Jalocha, HK Jang, JH Kang, P Kapusta, SU Kataoka, N Katayama, H Kawai, Y Kawakami, N Kawamura, T Kawasaki, H Kichimi, DW Kim, H Kim, HJ Kim, HO Kim, H Kim, TH Kim, K Kinoshita, P Krizan, P Krokovny, R Kulasiri, S Kumar, YJ Kwon, JS Lange, G Leder, SH Lee, J Li, RS Lu, J MacNaughton, G Majumder, F Mandl, S Matsumoto, T Matsumoto, Y Mikami, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, GR Moloney, S Mori, T Nagamine, Y Nagasaka, T Nakadaira, E Nakano, JW Nam, Z Natkaniec, K Neichi, O Nitoh, S Noguchi, T Nozaki, S Ogawa, F Ohno, T Ohshima, T Okabe, S Okuno, SL Olsen, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, CW Park, H Park, KS Park, LS Peak, JP Perroud, M Peters, LE Piilonen, M Rozanska, K Rybicki, H Sagawa, S Saitoh, Y Sakai, H Sakamoto, M Satapathy, A Satpathy, O Schneider, S Schrenk, C Schwanda, S Semenov, K Senyo, R Seuster, ME Sevior, H Shibuya, B Shwartz, Sidorov, V, JB Singh, S Stanic, A Sugi, A Sugiyama, K Sumisawa, T Sumiyoshi, K Suzuki, S Suzuki, T Takahashi, F Takasaki, K Tamai, N Tamura, M Tanaka, GN Taylor, Y Teramoto, S Tokuda, M Tomoto, T Tomura, SN Tovey, K Trabelsi, T Tsuboyama, T Tsukamoto, S Uehara, K Ueno, S Uno, Y Ushiroda, G Varner, KE Varvell, CC Wang, CH Wang, JG Wang, MZ Wang, Y Watanabe, E Won, BD Yabsley, Y Yamada, A Yamaguchi, H Yamamoto, Y Yamashita, M Yamauchi, Y Yuan, Y Yusa, J Zhang, ZP Zhang, Zhilich, V, D Zontar

    PHYSICAL REVIEW LETTERS   89 ( 23 )   1 - 6   2002年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMERICAN PHYSICAL SOC  

    We report observations of radiative B meson decays into the K(+)pi(-)gamma and K(+)pi(-)pi(+)gamma final states. In the B-0--&gt;K(+)pi(-)gamma channel, we present evidence for decays via an intermediate tensor meson state with a branching fraction of B(B-0--&gt;K-2(*)(1430)(0)gamma)=[1.3+/-0.5(stat)+/-0.1(syst)]x10(-5). We measure the branching fraction B(B+--&gt;K(+)pi(-)pi(+)gamma)=[2.4+/-0.5(stat) (+0.4)(-0.2)(syst)]x10(-5), in which the B+--&gt;K(*0)pi(+)gamma and B+--&gt;K(+)rho(0)gamma channels dominate. The analysis is based on a data set of 29.4 fb(-1) recorded by the Belle experiment at the KEKB collider.

    DOI: 10.1103/PhysRevLett.89.231801

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  • Measurement of the inclusive semileptonic branching fraction of B mesons and vertical bar V(cb)vertical bar 査読

    K Abe, K Abe, T Abe, Adachi, I, BS Ahn, H Aihara, M Akatsu, Y Asano, T Aso, Aulchenko, V, T Aushev, AM Bakich, Y Ban, E Banas, A Bay, Bedny, I, PK Behera, A Bondar, A Bozek, M Bracko, J Brodzicka, TE Browder, BCK Casey, P Chang, Y Chao, BG Cheon, R Chistov, SK Choi, Y Choi, M Danilov, LY Dong, A Drutskoy, S Eidelman, Eiges, V, Y Enari, F Fang, C Fukunaga, N Gabyshev, A Garmash, T Gershon, B Golob, K Gotow, R Guo, K Hanagaki, F Handa, K Hara, T Hara, NC Hastings, H Hayashii, M Hazumi, EM Heenan, Higuchi, I, T Higuchi, T Hojo, T Hokuue, Y Hoshi, Hou, SR, WS Hou, SC Hsu, HC Huang, T Igaki, Y Igarashi, T Iijima, K Inami, A Ishikawa, H Ishino, R Itoh, H Iwasaki, Y Iwasaki, HK Jang, H Kakuno, J Kaneko, JH Kang, JS Kang, P Kapusta, SU Kataoka, N Katayama, H Kawai, Y Kawakami, N Kawamura, T Kawasaki, H Kichimi, DW Kim, H Kim, HJ Kim, HO Kim, H Kim, SK Kim, TH Kim, K Kinoshita, S Kobayashi, P Krokovny, R Kulasiri, S Kumar, A Kuzmin, YJ Kwon, JS Lange, G Leder, SH Lee, J Li, A Limosani, D Liventsev, RS Lu, J MacNaughton, G Majumder, F Mandl, T Matsuishi, S Matsumoto, T Matsumoto, Y Mikami, W Mitaroff, K Miyabayashi, Y Miyabayashi, H Miyake, H Miyata, GR Moloney, T Mori, T Nagamine, Y Nagasaka, T Nakadaira, E Nakano, M Nakao, JW Nam, Z Natkaniec, K Neichi, S Nishida, O Nitoh, S Noguchi, T Nozaki, S Ogawa, F Ohno, T Ohshima, T Okabe, S Okuno, SL Olsen, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, CW Park, H Park, KS Park, LS Peak, JP Perroud, M Peters, LE Piilonen, FJ Ronga, N Root, K Rybicki, H Sagawa, S Saitoh, Y Sakai, H Sakamoto, M Satapathy, A Satpathy, O Schneider, C Schwanda, S Semenov, K Senyo, ME Sevior, H Shibuya, M Shimoyama, B Shwartz, Sidorov, V, JB Singh, S Stanic, A Sugi, A Sugiyama, K Sumisawa, T Sumiyoshi, K Suzuki, S Suzuki, SY Suzuki, SK Swain, T Takahashi, F Takasaki, K Tamai, N Tamura, J Tanaka, M Tanaka, GN Taylor, Y Teramoto, S Tokuda, M Tomoto, T Tomura, SN Tovey, K Trabelsi, T Tsuboyama, T Tsukamoto, S Uehara, K Ueno, Y Unno, S Uno, Y Ushiroda, KE Varvell, CC Wang, CH Wang, JG Wang, MZ Wang, Y Watanabe, E Won, BD Yabsley, Y Yamada, A Yamaguchi, Y Yamashita, M Yamauchi, J Yashima, K Yoshida, Y Yuan, Y Yusa, CC Zhang, J Zhang, ZP Zhang, Y Zheng, Zhilich, V, ZM Zhu, D Zontar

    PHYSICS LETTERS B   547 ( 3-4 )   181 - 192   2002年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

    We present a measurement of the electron spectrum from inclusive semileptonic B decay, using 5.1 fb(-1) of Y(4S) data collected with the Belle detector. A high-momentum lepton tag was used to separate the semileptonic B decay electrons from secondary decal electrons. We obtained the branching fraction, B(B --&gt; Xe(+)v) = (10.90 +/- 0.12 +/- 0.49)%, with minimal model dependence, From this measurement, we derive a value for the Cabibbo-Kobayashi-Maskawa matrix element [V(cb)] =0.0408 +/- 0.0010(exp) 0.0025(th). (C) 2002 Elsevier Science B.V. All rights reserved.

    DOI: 10.1016/S0370-2693(02)02770-3

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  • Improved measurement of mixing-induced CP violation in the neutral B meson system 査読

    K Abe, K Abe, T Abe, Adachi, I, H Aihara, M Akatsu, Y Asano, T Aso, Aulchenko, V, T Aushev, AM Bakich, E Banas, A Bay, PK Behera, Bizjak, I, A Bondar, A Bozek, M Bracko, J Brodzicka, TE Browder, BCK Casey, P Chang, Y Chao, KF Chen, BG Cheon, R Chistov, Y Choi, YK Choi, M Danilov, LY Dong, A Drutskoy, S Eidelman, Eiges, V, Y Enari, CW Everton, F Fang, H Fujii, C Fukunaga, N Gabyshev, A Garmash, T Gershon, B Golob, K Gotow, R Guo, J Haba, K Hanagaki, F Handa, K Hara, T Hara, Y Harada, NC Hastings, H Hayashii, M Hazumi, EM Heenan, Higuchi, I, T Higuchi, L Hinz, T Hojo, T Hokuue, Y Hoshi, WS Hou, HC Huang, T Igaki, Y Igarashi, T Iijima, K Inami, A Ishikawa, H Ishino, R Itoh, H Iwasaki, Y Iwasaki, HK Jang, H Kakuno, J Kaneko, JH Kang, JS Kang, N Katayama, H Kawai, H Kawai, Y Kawakami, N Kawamura, T Kawasaki, H Kichimi, DW Kim, H Kim, HJ Kim, HO Kim, H Kim, K Kinoshita, S Kobayashi, K Korotushenko, S Korpar, P Krizan, P Krokovny, S Kumar, A Kuzmin, YJ Kwon, JS Lange, G Leder, SH Lee, J Li, A Limosani, J MacNaughton, G Majumder, F Mandl, D Marlow, S Matsumoto, T Matsumoto, W Mitaroff, K Miyabayashi, Y Miyabayashi, H Miyake, GR Moloney, T Mori, A Murakami, T Nagamine, Y Nagasaka, T Nakadaira, E Nakano, M Nakao, H Nakazawa, JW Nam, Z Natkaniec, K Neichi, S Nishida, O Nitoh, S Noguchi, T Nozaki, S Ogawa, T Ohshima, T Okabe, SL Olsen, Y Onuki, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, CW Park, H Park, KS Park, JP Perroud, LE Piilonen, FJ Ronga, N Root, M Rozanska, K Rybicki, H Sagawa, S Saitoh, Y Sakai, H Sakamoto, M Satapathy, A Satpathy, O Schneider, S Schrenk, C Schwanda, S Semenov, K Senyo, R Seuster, H Shibuya, B Shwartz, Sidorov, V, JB Singh, N Soni, S Stanic, A Sugi, A Sugiyama, K Sumisawa, T Sumiyoshi, K Suzuki, S Suzuki, SY Suzuki, H Tajima, T Takahashi, F Takasaki, K Tamai, N Tamura, J Tanaka, M Tanaka, GN Taylor, Y Teramoto, S Tokuda, T Tomura, K Trabelsi, W Trischuk, T Tsuboyama, T Tsukamoto, S Uehara, K Ueno, Y Unno, S Uno, N Uozaki, Y Ushiroda, SE Vahsen, G Varner, KE Varvell, CC Wang, CH Wang, JG Wang, MZ Wang, Y Watanabe, E Won, BD Yabsley, Y Yamada, A Yamaguchi, H Yamamoto, Y Yamashita, Y Yamashita, M Yamauchi, H Yanai, J Yashima, P Yeh, M Yokoyama, Y Yuan, Y Yusa, H Yuta, CC Zhang, J Zhang, ZP Zhang, Zhilich, V, D Zontar

    PHYSICAL REVIEW D   66 ( 7 )   1 - 6   2002年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present an improved measurement of the standard model CP violation parameter sin 2phi(1) (also known as sin 2beta) based on a sample of 85x10(6) B (B) over bar pairs collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. One neutral B meson is reconstructed in a J/psiK(S)(0), psi(2S)K(S)(0), chi(c1)K(S)(0), eta(c)K(S)(0), J/psiK*(0), or J/psiK(L)(0) CP-eigenstate decay channel and the flavor of the accompanying B meson is identified from its decay products. From the asymmetry in the distribution of the time interval between the two B meson decay points, we obtain sin 2phi(1)=0.719+/-0.074(stat)+/-0.035(syst).

    DOI: 10.1103/PhysRevD.66.071102

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  • Improvement of radiation hardness of double-sided silicon strip detector for Belle SVD upgrade 査読

    J Kaneko, H Aihara, G Alimonti, A Hazumi, H Ishino, Y Li, K Sumisawa, H Tajima, J Tanaka, G Taylor, H Yamamoto, A Yokoyama, G Varner

    IEEE TRANSACTIONS ON NUCLEAR SCIENCE   49 ( 4 )   1593 - 1597   2002年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC  

    We have developed a double-sided silicon strip detector for the Belle silicon vertex detector upgrade. Since a radiation-hard front-end VLSI has been successfully developed, the shot noise due to the radiation-induced leakage current of the sensor will be the dominant source of the noise after irradiation in the Belle apparatus. Test structures with various strip pitches and strip widths were fabricated to study optimum strip width. The temperature dependence of the leakage current was measured with a prototype sensor after Co-60 gamma-ray irradiation. It was confirmed that the radiation-induced leakage current can be reduced by half by cooling the sensor from 25 to 15 degreesC. A radiation test with a prototype module consisting of a prototype sensor and front-end VLSI was also performed to evaluate the radiation hardness of the whole system. The signal-to-noise ratio was found to be better than 20 up to 5 Mrd(Si).

    DOI: 10.1109/TNS.2002.801694

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  • Study of CP-violating asymmetries in B(0)-&gt;pi(+)pi(-) decays 査読

    K Abe, K Abe, T Abe, Adachi, I, BS Ahn, H Aihara, M Akatsu, Y Asano, T Aso, Aulchenko, V, T Aushev, AM Bakich, Y Ban, E Banas, Bedny, I, S Behari, PK Behera, A Bondar, A Bozek, M Bracko, J Brodzicka, TE Browder, BCK Casey, P Chang, Y Chao, BG Cheon, R Chistov, SK Choi, Y Choi, M Danilov, LY Dong, J Dragic, A Drutskoy, S Eidelman, Eiges, V, Y Enari, CW Everton, F Fang, H Fujii, C Fukunaga, M Fukushima, N Gabyshev, A Garmash, T Gershon, B Golob, A Gordon, R Guo, J Haba, H Hamasaki, K Hanagaki, F Handa, K Hara, T Hara, NC Hastings, H Hayashii, M Hazumi, EM Heenan, Higuchi, I, T Higuchi, T Hojo, T Hokuue, Y Hoshi, K Hoshina, Hou, SR, WS Hou, SC Hsu, HC Huang, T Igaki, Y Igarashi, T Iijima, H Ikeda, K Inami, A Ishikawa, H Ishino, R Itoh, M Iwamoto, H Iwasaki, Y Iwasaki, DJ Jackson, P Jalocha, HK Jang, JH Kang, JS Kang, P Kapusta, N Katayama, H Kawai, H Kawai, N Kawamura, T Kawasaki, H Kichimi, DW Kim, H Kim, HJ Kim, HO Kim, H Kim, SK Kim, TH Kim, K Kinoshita, S Koishi, H Konishi, S Korpar, P Krizan, P Krokovny, R Kulasiri, S Kumar, A Kuzmin, YJ Kwon, JS Lange, G Leder, SH Lee, A Limosani, D Liventsev, RS Lu, J MacNaughton, G Majumder, F Mandl, D Marlow, T Matsuishi, S Matsumoto, T Matsumoto, Y Mikami, W Mitaroff, K Miyabayashi, Y Miyabayashi, H Miyake, H Miyata, GR Moloney, S Mori, T Mori, A Murakami, T Nagamine, Y Nagasaka, T Nakadaira, E Nakano, M Nakao, JW Nam, K Neichi, S Nishida, O Nitoh, S Noguchi, T Nozaki, S Ogawa, F Ohno, T Ohshima, T Okabe, S Okuno, SL Olsen, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, CW Park, H Park, KS Park, LS Peak, JP Perroud, M Peters, LE Piilonen, E Prebys, JL Rodriguez, FJ Ronga, M Rozanska, K Rybicki, H Sagawa, S Saitoh, Y Sakai, H Sakamoto, M Satapathy, A Satpathy, O Schneider, S Schrenk, C Schwanda, S Semenov, K Senyo, ME Sevior, H Shibuya, B Shwartz, Sidorov, V, JB Singh, S Stanic, A Sugi, A Sugiyama, K Sumisawa, T Sumiyoshi, K Suzuki, S Suzuki, SY Suzuki, SK Swain, H Tajima, T Takahashi, F Takasaki, M Takita, K Tamai, N Tamura, J Tanaka, M Tanaka, GN Taylor, Y Teramoto, S Tokuda, M Tomoto, T Tomura, SN Tovey, K Trabelsi, W Trischuk, T Tsuboyama, T Tsukamoto, S Uehara, K Ueno, Y Unno, S Uno, Y Ushiroda, KE Varvell, CC Wang, CH Wang, JG Wang, MZ Wang, Y Watanabe, E Won, BD Yabsley, Y Yamada, M Yamaga, A Yamaguchi, H Yamamoto, Y Yamashita, M Yamauchi, J Yashima, P Yeh, M Yokoyama, K Yoshida, Y Yuan, Y Yusa, CC Zhang, J Zhang, Y Zheng, Zhilich, V, D Zontar

    PHYSICAL REVIEW LETTERS   89 ( 7 )   1 - 6   2002年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present a measurement of CP-violating asymmetries in B(0)--&gt;pi(+)pi(-) decays based on a 41.8 fb(-1) data sample collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We fully reconstruct one neutral B meson as a B(0)--&gt;pi(+)pi(-) CP eigenstate and identify the flavor of the accompanying B meson from its decay products. From the asymmetry in the distribution of the time intervals between the two B meson decay points, we obtain the CP-violating asymmetry parameters S(pipi)=-1.21(-0.27)(+0.38)(stat)(-0.13)(+0.16)(syst) and A(pipi)=+0.94(-0.31)(+0.25)(stat)+/-0.09(syst).

    DOI: 10.1103/PhysRevLett.89.071801

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  • Observation of mixing-induced CP violation in the neutral B meson system 査読

    K Abe, K Abe, R Abe, T Abe, Adachi, I, BS Ahn, H Aihara, M Akatsu, Y Asano, T Aso, T Aushev, AM Bakich, Y Ban, E Banas, S Behari, PK Behera, A Bondar, A Bozek, M Bracko, TE Browder, BCK Casey, P Chang, Y Chao, BG Cheon, R Chistov, SK Choi, Y Choi, LY Dong, J Dragic, A Drutskoy, S Eidelman, Eiges, V, Y Enari, CW Everton, F Fang, C Fukunaga, M Fukushima, N Gabyshev, A Garmash, T Gershon, B Golob, A Gordon, H Guler, R Guo, J Haba, H Hamasaki, K Hanagaki, F Handa, K Hara, T Hara, NC Hastings, H Hayashii, M Hazumi, EM Heenan, Higuchi, I, T Higuchi, T Hojo, T Hokuue, Y Hoshi, Hou, SR, WS Hou, SC Hsu, HC Huang, T Igaki, T Iijima, H Ikeda, K Inami, A Ishikawa, H Ishino, R Itoh, H Iwasaki, Y Iwasaki, DJ Jackson, HK Jang, H Kakuno, JH Kang, JS Kang, P Kapusta, N Katayama, H Kawai, H Kawai, Y Kawakami, N Kawamura, T Kawasaki, H Kichimi, DW Kim, H Kim, HJ Kim, HO Kim, H Kim, SK Kim, TH Kim, K Kinoshita, H Konishi, S Korpar, P Krizan, P Krokovny, R Kulasiri, S Kumar, A Kuzmin, YJ Kwon, JS Lange, G Leder, SH Lee, A Limosani, D Liventsev, RS Lu, J MacNaughton, G Majumder, F Mandl, D Marlow, T Matsuishi, S Matsumoto, T Matsumoto, Y Mikami, W Mitaroff, K Miyabayashi, Y Miyabayashi, H Miyake, H Miyata, GR Moloney, S Mori, T Mori, A Murakami, T Nagamine, Y Nagasaka, Y Nagashima, T Nakadaira, E Nakano, M Nakao, JW Nam, Z Natkaniec, K Neichi, S Nishida, O Nitoh, S Noguchi, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, CS Park, CW Park, H Park, KS Park, LS Peak, JP Perroud, M Peters, LE Piilonen, E Prebys, JL Rodriguez, F Ronga, M Rozanska, K Rybicki, H Sagawa, Y Sakai, M Satapathy, A Satpathy, O Schneider, S Schrenk, C Schwanda, S Semenov, K Senyo, ME Sevior, H Shibuya, B Shwartz, Sidorov, V, JB Singh, S Stanic, A Sugi, A Sugiyama, K Sumisawa, T Sumiyoshi, K Suzuki, S Suzuki, SY Suzuki, H Tajima, T Takahashi, F Takasaki, M Takita, K Tamai, N Tamura, J Tanaka, M Tanaka, GN Taylor, Y Teramoto, S Tokuda, M Tomoto, T Tomura, SN Tovey, K Trabelsi, W Trischuk, T Tsuboyama, T Tsukamoto, S Uehara, K Ueno, Y Unno, S Uno, Y Ushiroda, SE Vahsen, KE Varvell, CC Wang, CH Wang, JG Wang, MZ Wang, Y Watanabe, E Won, BD Yabsley, Y Yamada, M Yamaga, A Yamaguchi, H Yamamoto, T Yamanaka, Y Yamashita, M Yamauchi, J Yashima, M Yokoyama, Y Yuan, Y Yusa, H Yuta, CC Zhang, J Zhang, Y Zheng, Zhilich, V, D Zontar

    PHYSICAL REVIEW D   66 ( 3 )   1 - 22   2002年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    This article describes an observation of mixing-induced CP violation and a measurement of the CP violation parameter, sin 2phi(1), with the Belle detector at the KEKB asymmetric e(+)e(-) collider. Using a data sample of 29.1 fb(-1) recorded on the Y(4S) resonance that contains 31.3 million B (B) over bar pairs, we reconstruct decays of neutral B mesons to the following CP eigenstates: J/psiK(S)(0), psi(2S)K(S)(0), chi(c1)K(S)(0), eta(c)K(S)(0), J/psiK(L)(0) and J/psiK(*0). The flavor of the accompanying B meson is identified by combining information from primary and secondary leptons, K(+/-) mesons, Lambda baryons, slow and fast pions. The proper-time interval between the two B meson decays is determined from the distance between the two decay vertices measured with a silicon vertex detector. The result sin 2phi(1)=0.99+/-0.14(stat)+/-0.06(syst) is obtained by applying a maximum likelihood fit to the 1137 candidate events. We conclude that there is large CP violation in the neutral B meson system. A zero value for sin 2phi(1) is ruled out by more than six standard deviations.

    DOI: 10.1103/PhysRevD.66.032007

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  • Study of B -&gt;rho pi decays at Belle 査読

    A Gordon, Y Chao, K Abe, K Abe, N Abe, R Abe, T Abe, BS Ahn, H Aihara, M Akatsu, Y Asano, T Aso, Aulchenko, V, T Aushev, AM Bakich, Y Ban, A Bay, Bedny, I, PK Behera, Bizjak, I, A Bondar, A Bozek, M Bracko, TE Browder, BCK Casey, MC Chang, P Chang, BG Cheon, R Chistov, Y Choi, YK Choi, M Danilov, LY Dong, J Dragic, A Drutskoy, S Eidelman, Eiges, V, Y Enari, CW Everton, F Fang, H Fujii, C Fukunaga, N Gabyshev, A Garmash, T Gershon, B Golob, R Guo, J Haba, T Hara, Y Harada, NC Hastings, H Hayashi, M Hazumi, EM Heenan, Higuchi, I, T Higuchi, L Hinz, T Hokuue, T Hoshi, Hou, SR, WS Hou, SC Hsu, HC Huang, T Igaki, Y Igarashi, T Iijima, K Inami, A Ishikawa, H Ishino, R Itoh, H Iwasaki, Y Iwasaki, HK Jang, JH Kang, JS Kang, N Katayama, Y Kawakami, N Kawamura, T Kawasaki, H Kichimi, DW Kim, H Kim, HJ Kim, HO Kim, H Kim, SK Kim, TH Kim, K Kinoshita, S Korpar, P Krokovny, R Kulasiri, S Kumar, A Kuzmin, YJ Kwon, JS Lange, G Leder, SH Lee, J Li, A Limosani, D Liventsev, RS Lu, J MacNaughton, G Majumder, F Mandl, D Marlow, S Matsumoto, T Matsumoto, W Mitaroff, K Miyabayashi, Y Miyabayashi, H Miyake, H Miyata, GR Moloney, T Mori, T Nagamine, T Nagasaka, T Nakadaira, E Nakano, M Nakao, JW Nam, Z Natkaniev, K Neichi, S Nishida, O Nitoh, S Noguchi, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, Y Onuki, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, CW Park, H Park, LS Peak, JP Perroud, M Peters, LE Piilonen, JL Rodriguez, FJ Ronga, N Root, M Rozanska, K Rybicki, H Sagawa, S Saitoh, Y Sakai, M Satapathy, A Satpathy, O Schneider, S Schrenk, C Schwanda, S Semenov, K Senyo, R Seuster, ME Sevior, H Shibuya, Sidorov, V, JB Singh, S Stanic, M Staric, A Sugi, A Sugiyama, K Sumisawa, T Sumiyoshi, K Suzuki, S Suzuki, SY Suzuki, T Takahashi, F Takasaki, K Tamai, N Tamura, J Tanaka, M Tanaka, GN Taylor, T Teramoto, S Tokuda, SN Tovey, T Tsuboyama, T Tsukamoto, S Uehara, K Ueno, Y Unno, S Uno, Y Ushiroda, G Varner, KE Varvell, CC Wang, CH Wang, JG Wang, MZ Wang, Y Watanabe, E Won, BD Yabsley, Y Yamada, A Yamaguchi, Y Yamashita, M Yamauchi, H Yanai, P Yeh, Y Yuan, Y Yusa, J Zhang, ZP Zhang, Y Zheng, D Zontar

    PHYSICS LETTERS B   542 ( 3-4 )   183 - 192   2002年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

    This Letter describes a study of B meson decays to the pseudoscalar-vector final state rhopi using 31.9 x 106 BB events collected with the Belle detector at KEKB. The branching fractions B(B+ --&gt; rho(0)pi(+)) = (8.0(-2.0-0.7)(+2.3+0.7)) X 10(-6) and B(B-0 --&gt; rho(+/-)pi(-/+)) = (20.8(-6.3-3.1)(+6.0+2.8)) x 10(-6) are obtained. In addition, a 90% confidence level upper limit of B(B-0 --&gt; rho(0)pi(0)) &lt; 5.3 x 10(-6) is reported. (C) 2002 Elsevier Science B.V. All rights reserved.

    DOI: 10.1016/S0370-2693(02)02374-2

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  • Observation of B -&gt; D(*)(K-K0)(*) decays 査読

    A Drutskoy, K Abe, K Abe, N Abe, R Abe, T Abe, Adachi, I, BS Ahn, H Aihara, M Akatsu, Y Asano, T Aso, Aulchenko, V, T Aushev, AM Bakich, Y Ban, E Banas, A Bay, Bedny, I, PK Behera, Bizjak, I, A Bondar, A Bozek, TE Browder, BCK Casey, MC Chang, P Chang, Y Chao, KF Chen, BG Cheon, R Chistov, SK Choi, Y Choi, YK Choi, M Danilov, LY Dong, S Eidelman, Eiges, V, Y Enari, CW Everton, F Fang, C Fukunaga, N Gabyshev, A Garmush, T Gershon, R Guo, J Haba, T Hara, Y Harada, H Hayashi, M Hazumi, EM Heenan, Higuchi, I, T Higuchi, L Hinz, L Hokune, Y Hoshi, WS Hou, SC Hsu, HC Huang, T Igaki, Y Igarashi, T Iijima, K Inami, A Ishikawa, H Ishino, R Itoh, H Iwasaki, Y Iwasaki, HK Jang, JH Kang, JS Kang, P Kapusta, SU Kataoka, N Katayama, H Kawai, Y Kawakami, T Kawasaki, H Kichimi, DW Kim, H Kim, HJ Kim, H Kim, TH Kim, K Kinoshita, S Korpar, P Krizan, P Krokovny, R Kulasiri, S Kumar, A Kuzmin, YJ Kwon, G Leder, SH Lee, J Li, D Liventsev, RS Lu, J MacNaughton, G Majumder, F Mandl, D Marlow, T Matsuishi, S Matsumoto, T Matsumoto, W Mitaroff, Y Miyabayashi, H Miyake, H Miyata, GR Moloney, T Mori, T Nagamine, Y Nagasaka, T Nakadaira, E Nakano, M Nakao, JW Nam, Z Natkaniec, K Neichi, S Nishida, O Nitoh, S Noguchi, T Nozaki, S Ogawa, F Ohno, T Ohshima, T Okabe, S Okuno, SL Olsen, Y Onuki, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, CW Park, H Park, LS Peak, JP Perroud, M Peters, LE Piilonen, N Root, M Rozanska, K Rybicki, H Sagawa, S Saitoh, Y Sakai, H Sakamoto, M Satapathy, A Satpathy, P Schneider, S Schrenk, S Semenov, K Senyo, R Seuster, ME Sevior, H Shibuya, Sidorov, V, JB Singh, N Soni, S Stanic, M Staric, A Sugi, S Sugiyama, K Sumisawa, T Sumiyoshi, SY Suzuki, T Takahashi, F Takasaki, K Tamai, N Tamura, J Tanaka, M Tanaka,