研究者詳細 - 石野　宏和

論文 - 石野　宏和

分割表示 326 件中 181 - 200 件目／全件表示 >>

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

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

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

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.

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

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.

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

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

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

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

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

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

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

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

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

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

Evidence of the purely leptonic decay B- -> 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

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-->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-->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

Time-dependent CP asymmetries in B-0 -> 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

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 -> 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 -> 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

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

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

Measurement of the quark mixing parameter cos2 phi(1) using time-dependent Dalitz analysis of (B)over-bar(0)-> 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

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 -> 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)-> 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

Measurement of forward-backward asymmetry and wilson coefficients in B -> 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

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 -> 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

Observation of b -> 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

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 -> 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- -> rho(-)gamma, (B) over bar (0) -> rho(0)gamma, and (B) over bar (0) -> omega gamma. Assuming that these three modes are related by isospin, we find B((B) over bar -> (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

Measurement of phi(3) with a Dalitz plot analysis of B+->(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

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-+/-->(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+-> DK+, B+->(DK+)-K-* with D-*-> D pi(0), and B+-> DK*+ with K*+-> 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 <phi(3)< 111 degrees.

DOI： 10.1103/PhysRevD.73.112009

Measurement of branching fraction and direct CP asymmetry in B-0 -> 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

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 ->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 ->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

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

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

Measurement of CP violation in B-0 -> D*-pi(+) and B-0 -> 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

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 -> 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 -> D*-pi(+) and B-0 -> 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 -> 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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