Faculty Profiles - KOSHIO Yusuke

Papers - KOSHIO Yusuke

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Developing an end-to-end simulation framework of supernova neutrino detection

Masamitsu Mori, Yudai Suwa, Ken'ichiro Nakazato, Kohsuke Sumiyoshi, Masayuki Harada, Akira Harada, Yusuke Koshio, Roger A. Wendell

PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS 2021 ( 2 ) 2021.2

Language：English Publishing type：Research paper (scientific journal) Publisher：OXFORD UNIV PRESS INC

Massive stars can explode as supernovae at the end of their life cycle, releasing neutrinos whose total energy reaches 10(53) erg. Moreover, neutrinos play key roles in supernovae, heating and reviving the shock wave as well as cooling the resulting proto-neutron star. Therefore, neutrino detectors are waiting to observe the next galactic supernova, and several theoretical simulations of supernova neutrinos are underway. While these simulations concentrate mainly on only the first second after the supernova bounce, the only observation of a supernova with neutrinos, SN 1987A, revealed that neutrino emission lasts for more than 10 seconds. For this reason, long-time simulation and analysis tools are needed to compare theories with the next observation. Our study develops an integrated supernova analysis framework to prepare an analysis pipeline for treating galactic supernovae observations in the near future. This framework deals with the core-collapse, bounce, and proto-neutron star cooling processes, as well as with neutrino detection on Earth in a consistent manner. We have developed a new long-time supernova simulation in one dimension that explodes successfully and computes the neutrino emission for up to 20 seconds. Using this model we estimate the resulting neutrino signal at the Super-Kamiokande detector to be about 1800 events for an explosion at 10 kpc, and we discuss the implications of this. We compare this result with the SN 1987A observation to test its reliability.

DOI： 10.1093/ptep/ptaa185

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T2K measurements of muon neutrino and antineutrino disappearance using 3.13×1021 protons on target Reviewed

K. Abe, N. Akhlaq, R. Akutsu, A. Ali, C. Alt, C. Andreopoulos, M. Antonova, S. Aoki, T. Arihara, Y. Asada, Y. Ashida, E. T. Atkin, Y. Awataguchi, G. J. Barker, G. Barr, D. Barrow, M. Batkiewicz-Kwasniak, A. Beloshapkin, F. Bench, V. Berardi, L. Berns, S. Bhadra, A. Blondel, S. Bolognesi, T. Bonus, B. Bourguille, S. B. Boyd, A. Bravar, D. Bravo Berguño, C. Bronner, S. Bron, A. Bubak, M. Buizza Avanzini, S. Cao, S. L. Cartwright, M. G. Catanesi, A. Cervera, D. Cherdack, G. Christodoulou, M. Cicerchia, J. Coleman, G. Collazuol, L. Cook, D. Coplowe, A. Cudd, G. De Rosa, T. Dealtry, C. C. Delogu, S. R. Dennis, C. Densham, A. Dergacheva, F. Di Lodovico, S. Dolan, T. A. Doyle, J. Dumarchez, P. Dunne, A. Eguchi, L. Eklund, S. Emery-Schrenk, A. Ereditato, A. J. Finch, G. A. Fiorentini, C. Francois, M. Friend, Y. Fujii, R. Fukuda, Y. Fukuda, K. Fusshoeller, C. Giganti, M. Gonin, A. Gorin, M. Guigue, D. R. Hadley, P. Hamacher-Baumann, M. Hartz, T. Hasegawa, S. Hassani, N. C. Hastings, Y. Hayato, A. Hiramoto, M. Hogan, J. Holeczek, N. T. Hong Van, T. Honjo, F. Iacob, A. K. Ichikawa, M. Ikeda, T. Ishida, M. Ishitsuka, K. Iwamoto, A. Izmaylov, N. Izumi, M. Jakkapu, B. Jamieson, S. J. Jenkins, C. Jesús-Valls, P. Jonsson, C. K. Jung, P. B. Jurj, M. Kabirnezhad, H. Kakuno, J. Kameda, S. P. Kasetti, Y. Kataoka, Y. Katayama, T. Katori, E. Kearns, M. Khabibullin, A. Khotjantsev, T. Kikawa, H. Kikutani, S. King, J. Kisiel, T. Kobata, T. Kobayashi, L. Koch, A. Konaka, L. L. Kormos, Y. Koshio, A. Kostin, K. Kowalik, Y. Kudenko, S. Kuribayashi, R. Kurjata, T. Kutter, M. Kuze, L. Labarga, J. Lagoda, M. Lamoureux, D. Last, M. Laveder, M. Lawe, R. P. Litchfield, S. L. Liu, A. Longhin, L. Ludovici, X. Lu, T. Lux, L. N. Machado, L. Magaletti, K. Mahn, M. Malek, S. Manly, L. Maret, A. D. Marino, L. Marti-Magro, T. Maruyama, T. Matsubara, K. Matsushita, C. Mauger, K. Mavrokoridis, E. Mazzucato, N. McCauley, J. McElwee, K. S. McFarland, C. McGrew, A. Mefodiev, M. Mezzetto, A. Minamino, O. Mineev, S. Mine, M. Miura, L. Molina Bueno, S. Moriyama, Th. A. Mueller, L. Munteanu, Y. Nagai, T. Nakadaira, M. Nakahata, Y. Nakajima, A. Nakamura, K. Nakamura, Y. Nakano, S. Nakayama, T. Nakaya, K. Nakayoshi, C. E. R. Naseby, T. V. Ngoc, V. Q. Nguyen, K. Niewczas, Y. Nishimura, E. Noah, T. S. Nonnenmacher, F. Nova, J. Nowak, J. C. Nugent, H. M. O’Keeffe, L. O’Sullivan, T. Odagawa, T. Ogawa, R. Okada, K. Okumura, T. Okusawa, R. A. Owen, Y. Oyama, V. Palladino, V. Paolone, M. Pari, W. C. Parker, S. Parsa, J. Pasternak, M. Pavin, D. Payne, G. C. Penn, L. Pickering, C. Pidcott, G. Pintaudi, C. Pistillo, B. Popov, K. Porwit, M. Posiadala-Zezula, A. Pritchard, B. Quilain, T. Radermacher, E. Radicioni, B. Radics, P. N. Ratoff, C. Riccio, E. Rondio, S. Roth, A. Rubbia, A. C. Ruggeri, C. Ruggles, A. Rychter, K. Sakashita, F. Sánchez, G. Santucci, C. M. Schloesser, K. Scholberg, M. Scott, Y. Seiya, T. Sekiguchi, H. Sekiya, D. Sgalaberna, A. Shaikhiev, A. Shaykina, M. Shiozawa, W. Shorrock, A. Shvartsman, K. Skwarczynski, M. Smy, J. T. Sobczyk, H. Sobel, F. J. P. Soler, Y. Sonoda, R. Spina, S. Suvorov, A. Suzuki, S. Y. Suzuki, Y. Suzuki, A. A. Sztuc, M. Tada, M. Tajima, A. Takeda, Y. Takeuchi, H. K. Tanaka, Y. Tanihara, M. Tani, N. Teshima, L. F. Thompson, W. Toki, C. Touramanis, T. Towstego, K. M. Tsui, T. Tsukamoto, M. Tzanov, Y. Uchida, M. Vagins, S. Valder, D. Vargas, G. Vasseur, C. Vilela, W. G. S. Vinning, T. Vladisavljevic, T. Wachala, J. Walker, J. G. Walsh, Y. Wang, D. Wark, M. O. Wascko, A. Weber, R. Wendell, M. J. Wilking, C. Wilkinson, J. R. Wilson, K. Wood, C. Wret, J. Xia, K. Yamamoto, C. Yanagisawa, G. Yang, T. Yano, K. Yasutome, N. Yershov, M. Yokoyama, T. Yoshida, M. Yu, A. Zalewska, J. Zalipska, K. Zaremba, G. Zarnecki, M. Ziembicki, M. Zito, S. Zsoldos

Physical Review D 103 ( 1 ) 2021.1

Neutron-antineutron oscillation search using a 0.37 megaton-years exposure of Super-Kamiokande Reviewed

K. Abe, C. Bronner, Y. Hayato, M. Ikeda, S. Imaizumi, H. Ito, J. Kameda, Y. Kataoka, M. Miura, S. Moriyama, 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, A. Takenaka, H. Tanaka, T. Yano, R. Akutsu, S. Han, T. Kajita, K. Okumura, T. Tashiro, R. Wang, J. Xia, D. Bravo-Berguño, L. Labarga, Ll. Marti, B. Zaldivar, F. d. M. Blaszczyk, E. Kearns, J. D. Gustafson, 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, V. Takhistov, 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, A. Giampaolo, M. Gonin, Th. A. Mueller, P. Paganini, B. Quilain, T. Ishizuka, T. Nakamura, J. S. Jang, J. G. Learned, L. H. V. Anthony, 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, T. Matsubara, T. Nakadaira, M. Jakkapu, K. Nakamura, Y. Oyama, K. Sakashita, T. Sekiguchi, T. Tsukamoto, Y. Nakano, T. Shiozawa, A. T. Suzuki, Y. Takeuchi, S. Yamamoto, A. Ali, Y. Ashida, J. Feng, S. Hirota, A. K. Ichikawa, T. Kikawa, M. Mori, 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, M. Posiadala-Zezula, C. K. Jung, C. Vilela, M. J. Wilking, C. Yanagisawa, M. Harada, K. Hagiwara, T. Horai, H. Ishino, S. Ito, Y. Koshio, W. Ma, N. Piplani, S. Sakai, Y. Kuno, G. Barr, D. Barrow, L. Cook, A. Goldsack, S. Samani, C. Simpson, D. Wark, F. Nova, T. Boschi, F. Di Lodovico, S. Molina Sedgwick, M. Taani, S. Zsoldos, J. Y. Yang, S. J. Jenkins, J. M. McElwee, M. D. Thiesse, L. F. Thompson, M. Malek, O. Stone, H. Okazawa, S. B. Kim, I. Yu, K. Nishijima, M. Koshiba, N. Ogawa, K. Iwamoto, M. Yokoyama, K. Martens, M. R. Vagins, M. Kuze, S. Izumiyama, M. Tanaka, T. Yoshida, M. Inomoto, M. Ishitsuka, R. Matsumoto, K. Ohta, M. Shinoki, J. F. Martin, H. A. Tanaka, T. Towstego, M. Hartz, A. Konaka, P. de Perio, N. W. Prouse, B. W. Pointon, S. Chen, B. D. Xu, B. Richards, B. Jamieson, J. Walker, A. Minamino, K. Okamoto, G. Pintaudi, R. Sasaki

Physical Review D 103 ( 1 ) 2021.1

Language：English Publishing type：Research paper (scientific journal) Publisher：American Physical Society (APS)

As a baryon number violating process with ΔB=2, neutron-antineutron oscillation (n→n¯) provides a unique test of baryon number conservation. We have performed a search for n→n¯ oscillation with bound neutrons in Super-Kamiokande, with the full dataset from its first four run periods, representing an exposure of 0.37 Mton-years. The search used a multivariate analysis trained on simulated n→n¯ events and atmospheric neutrino backgrounds and resulted in 11 candidate events with an expected background of 9.3 events. In the absence of statistically significant excess, we derived a lower limit on n¯ appearance lifetime in O16 nuclei of 3.6×1032 years and on the neutron-antineutron oscillation time of τn→n¯>4.7×108 s at 90% C.L.

DOI： 10.1103/physrevd.103.012008

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Other Link： http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevD.103.012008/fulltext

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 ) 2020.12

Language：English Publishing type：Research paper (scientific journal) Publisher：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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Indirect search for dark matter from the Galactic Center and halo with the Super-Kamiokande detector

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, Kametani, I, K. P. Lee, T. McLachlan, K. Okumura, E. Richard, T. Tashiro, R. Wang, J. Xia, D. Bravo-Berguno, 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. Kropp, S. Locke, S. Mine, A. Renshaw, M. B. Smy, H. W. Sobel, Takhistov, V, 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. Anthony, R. P. Litchfield, A. A. Sztuc, Y. Uchida, M. O. Wascko, Berardi, V, 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, K. E. 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, G. Pintaudi

PHYSICAL REVIEW D 102 ( 7 ) 2020.10

Language：English Publishing type：Research paper (scientific journal) Publisher：AMER PHYSICAL SOC

Super-Kamiokande-I, -II, -III and -IV taken from 1996 to 2016. We model the neutrino flux, energy, and flavor distributions assuming WIMP self-annihilation is dominant to nu<(nu, mu(+)mu(-), b<(b)over bar>)over bar> W+ W-. The excess is in comparison to atmospheric neutrino interactions which are modeled in detail and fit to data. Limits on the self-annihilation cross section <sigma(A) V > are derived for WIMP masses in the range 1 GeV to 10 TeV, reaching as low as 9.6 x 10(-23) cm(3) s(-1) for 5 GeV WIMPs in b (b) over bar mode and 1.2 x 10(-24) cm(3) s(-1) for 1 GeV WIMPs in nu(nu) over bar mode. The obtained sensitivity of the Super-Kamiokande detector to WIMP masses below several tens of GeV is the best among similar indirect searches to date.

DOI： 10.1103/PhysRevD.102.072002

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Measurement of the charged-current electron (anti-)neutrino inclusive cross-sections at the T2K off-axis near detector ND280

K. Abe, R. Akutsu, A. Ali, C. Alt, C. Andreopoulos, L. Anthony, M. Antonova, S. Aoki, A. Ariga, Y. Ashida, E. T. Atkin, Y. Awataguchi, S. Ban, M. Barbi, G. J. Barker, G. Barr, C. Barry, M. Batkiewicz-Kwasniak, A. Beloshapkin, F. Bench, V. Berardi, S. Berkman, L. Berns, S. Bhadra, S. Bienstock, A. Blondel, S. Bolognesi, B. Bourguille, S. B. Boyd, D. Brailsford, A. Bravar, D. Bravo Berguno, C. Bronner, A. Bubak, M. Buizza Avanzini, J. Calcutt, T. Campbell, S. Cao, S. L. Cartwright, M. G. Catanesi, A. Cervera, A. Chappell, C. Checchia, D. Cherdack, N. Chikuma, G. Christodoulou, J. Coleman, G. Collazuol, L. Cook, D. Coplowe, A. Cudd, A. Dabrowska, G. De Rosa, T. Dealtry, P. F. Denner, S. R. Dennis, C. Densham, F. Di Lodovico, N. Dokania, S. Dolan, O. Drapier, J. Dumarchez, P. Dunne, L. Eklund, S. Emery-Schrenk, A. Ereditato, P. Fernandez, T. Feusels, A. J. Finch, G. A. Fiorentini, G. Fiorillo, C. Francois, M. Friend, Y. Fujii, R. Fujita, D. Fukuda, R. Fukuda, Y. Fukuda, K. Gameil, C. Giganti, T. Golan, M. Gonin, A. Gorin, M. Guigue, D. R. Hadley, J. T. Haigh, P. Hamacher-Baumann, M. Hartz, T. Hasegawa, N. C. Hastings, T. Hayashino, Y. Hayato, A. Hiramoto, M. Hogan, J. Holeczek, N. T. Hong Van, F. Iacob, A. K. Ichikawa, M. Ikeda, T. Ishida, T. Ishii, M. Ishitsuka, K. Iwamoto, A. Izmaylov, B. Jamieson, S. J. Jenkins, C. Jesus-Valls, M. Jiang, S. Johnson, P. Jonsson, C. K. Jung, M. Kabirnezhad, A. C. Kaboth, T. Kajita, H. Kakuno, J. Kameda, D. Karlen, S. P. Kasetti, Y. Kataoka, T. Katori, Y. Kato, E. Kearns, M. Khabibullin, A. Khotjantsev, T. Kikawa, H. Kim, J. Kim, S. King, J. Kisiel, A. Knight, A. Knox, T. Kobayashi, L. Koch, T. Koga, A. Konaka, L. L. Kormos, Y. Koshio, K. Kowalik, H. Kubo, Y. Kudenko, N. Kukita, S. Kuribayashi, R. Kurjata, T. Kutter, M. Kuze, L. Labarga, J. Lagoda, M. Lamoureux, M. Laveder, M. Lawe, M. Licciardi, T. Lindner, R. P. Litchfield, S. L. Liu, X. Li, A. Longhin, L. Ludovici, X. Lu, T. Lux, L. N. Machado, L. Magaletti, K. Mahn, M. Malek, S. Manly, L. Maret, A. D. Marino, J. F. Martin, T. Maruyama, T. Matsubara, K. Matsushita, V. Matveev, K. Mavrokoridis, E. Mazzucato, M. McCarthy, N. McCauley, K. S. McFarland, C. McGrew, A. Mefodiev, C. Metelko, M. Mezzetto, A. Minamino, O. Mineev, S. Mine, M. Miura, L. Molina Bueno, S. Moriyama, J. Morrison, Th. A. Mueller, L. Munteanu, S. Murphy, Y. Nagai, T. Nakadaira, M. Nakahata, Y. Nakajima, A. Nakamura, K. G. Nakamura, K. Nakamura, S. Nakayama, T. Nakaya, K. Nakayoshi, C. Nantais, T. V. Ngoc, K. Niewczas, K. Nishikawa, Y. Nishimura, T. S. Nonnenmacher, F. Nova, P. Novella, J. Nowak, J. C. Nugent, H. M. O'Keeffe, L. O'Sullivan, T. Odagawa, K. Okumura, T. Okusawa, S. M. Oser, R. A. Owen, Y. Oyama, V. Palladino, J. L. Palomino, V. Paolone, W. C. Parker, P. Paudyal, M. Pavin, D. Payne, G. C. Penn, L. Pickering, C. Pidcott, E. S. Pinzon Guerra, C. Pistillo, B. Popov, K. Porwit, M. Posiadala-Zezula, A. Pritchard, B. Quilain, T. Radermacher, E. Radicioni, B. Radics, P. N. Ratoff, E. Reinherz-Aronis, C. Riccio, E. Rondio, S. Roth, A. Rubbia, A. C. Ruggeri, A. Rychter, K. Sakashita, F. Sanchez, C. M. Schloesser, K. Scholberg, J. Schwehr, M. Scott, Y. Seiya, T. Sekiguchi, H. Sekiya, D. Sgalaberna, R. Shah, A. Shaikhiev, F. Shaker, A. Shaykina, M. Shiozawa, W. Shorrock, A. Shvartsman, A. Smirnov, M. Smy, J. T. Sobczyk, H. Sobel, F. J. P. Soler, Y. Sonoda, J. Steinmann, S. Suvorov, A. Suzuki, S. Y. Suzuki, Y. Suzuki, A. A. Sztuc, M. Tada, M. Tajima, A. Takeda, Y. Takeuchi, H. K. Tanaka, H. A. Tanaka, S. Tanaka, L. F. Thompson, W. Toki, C. Touramanis, K. M. Tsui, T. Tsukamoto, M. Tzanov, Y. Uchida, W. Uno, M. Vagins, S. Valder, Z. Vallari, D. Vargas, G. Vasseur, C. Vilela, W. G. S. Vinning, T. Vladisavljevic, V. V. Volkov, T. Wachala, J. Walker, J. G. Walsh, Y. Wang, D. Wark, M. O. Wascko, A. Weber, R. Wendell, M. J. Wilking, C. Wilkinson, J. R. Wilson, R. J. Wilson, K. Wood, C. Wret, Y. Yamada, K. Yamamoto, C. Yanagisawa, G. Yang, T. Yano, K. Yasutome, S. Yen, N. Yershov, M. Yokoyama, T. Yoshida, M. Yu, A. Zalewska, J. Zalipska, K. Zaremba, G. Zarnecki, M. Ziembicki, E. D. Zimmerman, M. Zito, S. Zsoldos, A. Zykova

JOURNAL OF HIGH ENERGY PHYSICS ( 10 ) 2020.10

Language：English Publishing type：Research paper (scientific journal) Publisher：SPRINGER

The electron (anti-)neutrino component of the T2K neutrino beam constitutes the largest background in the measurement of electron (anti-)neutrino appearance at the far detector. The electron neutrino scattering is measured directly with the T2K off-axis near detector, ND280. The selection of the electron (anti-)neutrino events in the plastic scintillator target from both neutrino and anti-neutrino mode beams is discussed in this paper. The flux integrated single differential charged-current inclusive electron (anti-)neutrino cross-sections, d sigma/dp and d sigma/d cos(theta), and the total cross-sections in a limited phase-space in momentum and scattering angle (p 300 MeV/c and theta <= 45 degrees) are measured using a binned maximum likelihood fit and compared to the neutrino Monte Carlo generator predictions, resulting in good agreement.

DOI： 10.1007/JHEP10(2020)114

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First measurement of the charged current (nu)over-bar(mu) double differential cross section on a water target without( )pions in the final state

K. Abe, R. Akutsu, A. Ali, C. Alt, C. Andreopoulos, L. Anthony, M. Antonova, S. Aoki, A. Ariga, Y. Ashida, E. T. Atkin, Y. Awataguchi, S. Ban, M. Barbi, G. J. Barker, G. Barr, C. Barry, M. Batkiewicz-Kwasniak, A. Beloshapkin, F. Bench, Berardi, V, S. Berkman, L. Berns, S. Bhadra, S. Bienstock, A. Blondel, S. Bolognesi, B. Bourguille, S. B. Boyd, D. Brailsford, A. Bravar, C. Bronner, M. Buizza Avanzini, J. Calcutt, T. Campbell, S. Cao, S. L. Cartwright, M. G. Catanesi, A. Cervera, A. Chappell, C. Checchia, D. Cherdack, N. Chikuma, G. Christodoulou, J. Coleman, G. Collazuol, L. Cook, D. Coplowe, A. Cudd, A. Dabrowska, G. De Rosa, T. Dealtry, P. F. Denner, S. R. Dennis, C. Densham, F. Di Lodovico, N. Dokania, S. Dolan, O. Drapier, J. Dumarchez, P. Dunne, L. Eklund, S. Emery-Schrenk, A. Ereditato, P. Fernandez, T. Feusels, A. J. Finch, G. A. Fiorentini, G. Fiorillo, C. Francois, M. Friend, Y. Fujii, R. Fujita, D. Fukuda, R. Fukuda, Y. Fukuda, K. Gameil, C. Giganti, T. Golan, M. Gonin, A. Gorin, M. Guigue, D. R. Hadley, J. T. Haigh, P. Hamacher-Baumann, M. Hartz, T. Hasegawa, N. C. Hastings, T. Hayashino, Y. Hayato, A. Hiramoto, M. Hogan, J. Holeczek, N. T. Hong Van, F. Iacob, A. K. Ichikawa, M. Ikeda, T. Ishida, T. Ishii, M. Ishitsuka, K. Iwamoto, A. Izmaylov, B. Jamieson, S. J. Jenkins, C. Jesus-Valls, M. Jiang, S. Johnson, P. Jonsson, C. K. Jung, M. Kabirnezhad, A. C. Kaboth, T. Kajita, H. Kakuno, J. Kameda, D. Karlen, Y. Kataoka, T. Katori, Y. Kato, E. Kearns, M. Khabibullin, A. Khotjantsev, H. Kim, J. Kim, S. King, J. Kisiel, A. Knight, A. Knox, T. Kobayashi, L. Koch, T. Koga, A. Konaka, L. L. Kormos, Y. Koshio, K. Kowalik, H. Kubo, Y. Kudenko, N. Kukita, R. Kurjata, T. Kutter, M. Kuze, L. Labarga, J. Lagoda, M. Lamoureux, M. Laveder, M. Lawe, M. Licciardi, T. Lindner, R. P. Litchfield, S. L. Liu, X. Li, A. Longhin, L. Ludovici, X. Lu, T. Lux, L. Magaletti, K. Mahn, M. Malek, S. Manly, L. Maret, A. D. Marino, J. F. Martin, T. Maruyama, T. Matsubara, K. Matsushita, Matveev, V, K. Mavrokoridis, E. Mazzucato, M. McCarthy, N. McCauley, K. S. McFarland, C. McGrew, A. Mefodiev, C. Metelko, M. Mezzetto, A. Minamino, O. Mineev, S. Mine, M. Miura, L. Molina Bueno, S. Moriyama, J. Morrison, Th A. Mueller, L. Munteanu, S. Murphy, Y. Nagai, T. Nakadaira, M. Nakahata, Y. Nakajima, A. Nakamura, K. G. Nakamura, K. Nakamura, S. Nakayama, T. Nakaya, K. Nakayoshi, C. Nantais, T. Ngoc, K. Niewczas, K. Nishikawa, Y. Nishimura, T. S. Nonnenmacher, F. Nova, P. Novella, J. Nowak, J. C. Nugent, H. M. O'Keeffe, L. O'Sullivan, K. Okumura, T. Okusawa, S. M. Oser, R. A. Owen, Y. Oyama, Palladino, V, J. L. Palomino, Paolone, V, W. C. Parker, P. Paudyal, M. Pavin, D. Payne, G. C. Penn, L. Pickering, C. Pidcott, E. S. Pinzon Guerra, C. Pistillo, B. Popov, K. Porwit, M. Posiadala-Zezula, A. Pritchard, B. Quilain, T. Radermacher, E. Radicioni, B. Radics, P. N. Ratoff, E. Reinherz-Aronis, C. Riccio, E. Rondio, S. Roth, A. Rubbia, A. C. Ruggeri, A. Rychter, K. Sakashita, F. Sanchez, C. M. Schloesser, K. Scholberg, J. Schwehr, M. Scott, Y. Seiya, T. Sekiguchi, H. Sekiya, D. Sgalaberna, R. Shah, A. Shaikhiev, F. Shaker, A. Shaykina, M. Shiozawa, W. Shorrock, A. Shvartsman, A. Smirnov, M. Smy, J. T. Sobczyk, H. Sobel, F. J. P. Soler, Y. Sonoda, J. Steinmann, S. Suvorov, A. Suzuki, S. Y. Suzuki, Y. Suzuki, A. A. Sztuc, M. Tada, A. Takeda, Y. Takeuchi, H. K. Tanaka, H. A. Tanaka, S. Tanaka, L. F. Thompson, W. Toki, C. Touramanis, K. M. Tsui, T. Tsukamoto, M. Tzanov, Y. Uchida, W. Uno, M. Vagins, S. Valder, Z. Vallari, D. Vargas, G. Vasseur, C. Vilela, W. G. S. Vinning, T. Vladisavljevic, V. V. Volkov, T. Wachala, J. Walker, J. G. Walsh, Y. Wang, D. Wark, M. O. Wascko, A. Weber, R. Wendell, M. J. Wilking, C. Wilkinson, J. R. Wilson, R. J. Wilson, K. Wood, C. Wret, Y. Yamada, K. Yamamoto, C. Yanagisawa, G. Yang, T. Yano, K. Yasutome, S. Yen, N. Yershov, M. Yokoyama, T. Yoshida, M. Yu, A. Zalewska, J. Zalipska, K. Zaremba, G. Zarnecki, M. Ziembicki, E. D. Zimmerman, M. Zito, S. Zsoldos, A. Zykova

PHYSICAL REVIEW D 102 ( 1 ) 2020.7

Language：English Publishing type：Research paper (scientific journal) Publisher：AMER PHYSICAL SOC

This paper reports the first differential measurement of the charged-current (nu) over bar (mu) interaction cross section on water with no pions in the final state. The unfolded flux-averaged measurement using the T2K off-axis near detector is given in double-differential bins of mu(+) momentum and angle. The integrated cross section in a restricted phase space is sigma = (1.11 +/- 0.18) x 10(-38) cm(2) per water molecule. Comparisons with several nuclear models are also presented.

DOI： 10.1103/PhysRevD.102.012007

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Observation of Atmospheric Neutrinos Reviewed

Yusuke Koshio

UNIVERSE 6 ( 6 ) 80 - 80 2020.6

Language：English Publishing type：Research paper (scientific journal) Publisher：MDPI

In 1998, the Super-Kamiokande discovered neutrino oscillation using atmospheric neutrino anomalies. It was the first direct evidence of neutrino mass and the first phenomenon to be discovered beyond the standard model of particle physics. Recently, more precise measurements of neutrino oscillation parameters using atmospheric neutrinos have been achieved by several detectors, such as Super-Kamiokande, IceCube, and ANTARES. In addition, precise predictions and measurements of atmospheric neutrino flux have been performed. This paper presents the history, current status, and future prospects of the atmospheric neutrino observation.

DOI： 10.3390/universe6060080

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Neutrino physics in Super-Kamiokande and Hyper-Kamiokande

Y. Koshio

JOURNAL OF INSTRUMENTATION 15 ( 6 ) 2020.6

Language：English Publishing type：Research paper (scientific journal) Publisher：IOP PUBLISHING LTD

The neutrino is one of the elementary particles. In the field of particle physics, the question of whether neutrinos have mass has existed for many years. In 1998, the Super-Kamiokande experiment made the first discovery of the neutrino oscillation using the atmospheric neutrino anomaly. It was direct evidence of neutrino mass. Recently, more precise measurements of neutrino oscillation parameters have been performed using not only atmospheric neutrinos but also neutrinos from the Sun, accelerators and reactors. The detection of the next supernova neutrino is awaited and is expected to improve our understanding of the death of the massive stars. The history and the current status of neutrino physics, especially with respect to the Super-Kamiokande experiment and the potential of the Hyper-Kamiokande experiment were presented in the lecture.

DOI： 10.1088/1748-0221/15/06/C06041

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Simultaneous measurement of the muon neutrino charged-current cross section on oxygen and carbon without pions in the final state at T2K

K. Abe, N. Akhlaq, R. Akutsu, A. Ali, C. Alt, C. Andreopoulos, L. Anthony, M. Antonova, S. Aoki, A. Ariga, T. Arihara, Y. Asada, Y. Ashida, E. T. Atkin, Y. Awataguchi, S. Ban, M. Barbi, G. J. Barker, G. Barr, D. Barrow, M. Batkiewicz-Kwasniak, A. Beloshapkin, F. Bench, Berardi, V, L. Berns, S. Bhadra, S. Bienstock, S. Bolognesi, T. Bonus, B. Bourguille, S. B. Boyd, A. Bravar, D. Bravo Berguno, C. Bronner, S. Bron, A. Bubak, M. Buizza Avanzini, T. Campbell, S. Cao, S. L. Cartwright, M. G. Catanesi, A. Cervera, D. Cherdack, N. Chikuma, G. Christodoulou, M. Cicerchia, J. Coleman, G. Collazuol, L. Cook, D. Coplowe, A. Cudd, A. Dabrowska, G. De Rosa, T. Dealtry, S. R. Dennis, C. Densham, F. Di Lodovico, N. Dokania, S. Dolan, T. A. Doyle, O. Drapier, J. Dumarchez, P. Dunne, A. Eguchi, L. Eklund, S. Emery-Schrenk, A. Ereditato, A. J. Finch, G. Fiorillo, C. Francois, M. Friend, Y. Fujii, R. Fujita, D. Fukuda, R. Fukuda, Y. Fukuda, K. Fusshoeller, C. Giganti, M. Gonin, A. Gorin, M. Guigue, D. R. Hadley, J. T. Haigh, P. Hamacher-Baumann, M. Hartz, T. Hasegawa, S. Hassani, N. C. Hastings, Y. Hayato, A. Hiramoto, M. Hogan, J. Holeczek, N. T. Hong Van, T. Honjo, F. Iacob, A. K. Ichikawa, M. Ikeda, T. Ishida, M. Ishitsuka, K. Iwamoto, A. Izmaylov, N. Izumi, M. Jakkapu, B. Jamieson, S. J. Jenkins, C. Jesus-Valls, M. Jiang, P. Jonsson, C. K. Jung, X. Junjie, P. B. Jurj, M. Kabirnezhad, A. C. Kaboth, T. Kajita, H. Kakuno, J. Kameda, D. Karlen, S. P. Kasetti, Y. Kataoka, Y. Katayama, T. Katori, Y. Kato, E. Kearns, M. Khabibullin, A. Khotjantsev, T. Kikawa, H. Kikutani, H. Kim, S. King, J. Kisiel, A. Knight, T. Kobata, T. Kobayashi, L. Koch, T. Koga, A. Konaka, L. L. Kormos, Y. Koshio, A. Kostin, K. Kowalik, H. Kubo, Y. Kudenko, N. Kukita, S. Kuribayashi, R. Kurjata, T. Kutter, M. Kuze, L. Labarga, J. Lagoda, M. Lamoureux, D. Last, M. Lawe, M. Licciardi, R. P. Litchfield, S. L. Liu, X. Li, A. Longhin, L. Ludovici, X. Lu, T. Lux, L. N. Machado, L. Magaletti, K. Mahn, M. Malek, S. Manly, L. Maret, A. D. Marino, L. Marti-Magro, T. Maruyama, T. Matsubara, K. Matsushita, Matveev, V, C. Mauger, K. Mavrokoridis, E. Mazzucato, N. McCauley, J. McElwee, K. S. McFarland, C. McGrew, A. Mefodiev, C. Metelko, M. Mezzetto, A. Minamino, O. Mineev, S. Mine, M. Miura, L. Molina Bueno, S. Moriyama, Th A. Mueller, L. Munteanu, S. Murphy, Y. Nagai, T. Nakadaira, M. Nakahata, Y. Nakajima, A. Nakamura, K. Nakamura, S. Nakayama, T. Nakaya, K. Nakayoshi, C. E. R. Naseby, T. Ngoc, K. Niewczas, K. Nishikawa, Y. Nishimura, E. Noah, T. S. Nonnenmacher, F. Nova, P. Novella, J. Nowak, J. C. Nugent, H. M. O'Keeffe, L. O'Sullivan, T. Odagawa, T. Ogawa, R. Okada, K. Okumura, T. Okusawa, S. M. Oser, R. A. Owen, Y. Oyama, Palladino, V, Paolone, V, M. Pari, W. C. Parker, S. Parsa, J. Pasternak, M. Pavin, D. Payne, G. C. Penn, L. Pickering, C. Pidcott, G. Pintaudi, C. Pistillo, B. Popov, K. Porwit, M. Posiadala-Zezula, A. Pritchard, B. Quilain, T. Radermacher, E. Radicioni, B. Radics, P. N. Ratoff, C. Riccio, E. Rondio, S. Roth, A. Rubbia, A. C. Ruggeri, C. Ruggles, A. Rychter, K. Sakashita, F. Sanchez, G. Santucci, C. M. Schloesser, K. Scholberg, M. Scott, Y. Seiya, T. Sekiguchi, H. Sekiya, D. Sgalaberna, A. Shaikhiev, A. Shaykina, M. Shiozawa, W. Shorrock, A. Shvartsman, M. Smy, J. T. Sobczyk, H. Sobel, F. J. P. Soler, Y. Sonoda, S. Suvorov, A. Suzuki, S. Y. Suzuki, Y. Suzuki, A. A. Sztuc, M. Tada, M. Tajima, A. Takeda, Y. Takeuchi, H. K. Tanaka, H. A. Tanaka, S. Tanaka, Y. Tanihara, N. Teshima, L. F. Thompson, W. Toki, C. Touramanis, T. Towstego, K. M. Tsui, T. Tsukamoto, M. Tzanov, Y. Uchida, M. Vagins, S. Valder, Z. Vallari, D. Vargas, G. Vasseur, W. G. S. Vinning, T. Vladisavljevic, V. V. Volkov, T. Wachala, J. Walker, J. G. Walsh, Y. Wang, D. Wark, M. O. Wascko, A. Weber, R. Wendell, M. J. Wilking, C. Wilkinson, J. R. Wilson, K. Wood, C. Wret, K. Yamamoto, C. Yanagisawa, G. Yang, T. Yano, K. Yasutome, N. Yershov, M. Yokoyama, T. Yoshida, M. Yu, A. Zalewska, J. Zalipska, K. Zaremba, G. Zarnecki, M. Ziembicki, E. D. Zimmerman, M. Zito, S. Zsoldos, A. Zykova

PHYSICAL REVIEW D 101 ( 11 ) 2020.6

Language：English Publishing type：Research paper (scientific journal) Publisher：AMER PHYSICAL SOC

This paper reports the first simultaneous measurement of the double differential muon neutrino chargedcurrent cross section on oxygen and carbon without pions in the final state as a function of the outgoing muon kinematics, made at the ND280 off-axis near detector of the T2K experiment. The ratio of the oxygen and carbon cross sections is also provided to help validate various models' ability to extrapolate between carbon and oxygen nuclear targets, as is required in T2K oscillation analyses. The data are taken using a neutrino beam with an energy spectrum peaked at 0.6 GeV. The extracted measurement is compared with the prediction from different Monte Carlo neutrino-nucleus interaction event generators, showing particular model separation for very forward-going muons. Overall, of the models tested, the result is best described using local Fermi gas descriptions of the nuclear ground state with RPA suppression.

DOI： 10.1103/PhysRevD.101.112004

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First combined measurement of the muon neutrino and antineutrino charged-current cross section without pions in the final state at T2K

K. Abe, N. Akhlaq, R. Akutsu, A. Ali, C. Alt, C. Andreopoulos, L. Anthony, M. Antonova, S. Aoki, A. Ariga, T. Arihara, Y. Asada, Y. Ashida, E. T. Atkin, Y. Awataguchi, S. Ban, M. Barbi, G. J. Barker, G. Barr, D. Barrow, C. Barry, M. Batkiewicz-Kwasniak, A. Beloshapkin, F. Bench, Berardi, V, L. Berns, S. Bhadra, S. Bienstock, A. Blondel, S. Bolognesi, T. Bonus, B. Bourguille, S. B. Boyd, D. Brailsford, A. Bravar, D. Bravo Berguno, C. Bronner, S. Bron, A. Bubak, M. Buizza Avanzini, J. Calcutt, T. Campbell, S. Cao, S. L. Cartwright, M. G. Catanesi, A. Cervera, A. Chappell, C. Checchia, D. Cherdack, N. Chikuma, G. Christodoulou, M. Cicerchia, J. Coleman, G. Collazuol, L. Cook, D. Coplowe, A. Cudd, A. Dabrowska, G. De Rosa, T. Dealtry, P. F. Denner, S. R. Dennis, C. Densham, F. Di Lodovico, N. Dokania, S. Dolan, T. A. Doyle, O. Drapier, J. Dumarchez, P. Dunne, A. Eguchi, L. Eklund, S. Emery-Schrenk, A. Ereditato, P. Fernandez, T. Feusels, A. J. Finch, G. A. Fiorentini, G. Fiorillo, C. Francois, M. Friend, Y. Fujii, R. Fujita, D. Fukuda, R. Fukuda, Y. Fukuda, K. Fusshoeller, C. Giganti, T. Golan, M. Gonin, A. Gorin, M. Guigue, D. R. Hadley, J. T. Haigh, P. Hamacher-Baumann, M. Hartz, T. Hasegawa, S. Hassani, N. C. Hastings, T. Hayashino, Y. Hayato, A. Hiramoto, M. Hogan, J. Holeczek, N. T. Hong Van, T. Honjo, F. Iacob, A. K. Ichikawa, M. Ikeda, T. Ishida, T. Ishii, M. Ishitsuka, K. Iwamoto, A. Izmaylov, N. Izumi, M. Jakkapu, B. Jamieson, S. J. Jenkins, C. Jesus-Valls, M. Jiang, S. Johnson, P. Jonsson, C. K. Jung, X. Junjie, P. B. Jurj, M. Kabirnezhad, A. C. Kaboth, T. Kajita, H. Kakuno, J. Kameda, D. Karlen, S. P. Kasetti, Y. Kataoka, Y. Katayama, T. Katori, Y. Kato, E. Kearns, M. Khabibullin, A. Khotjantsev, T. Kikawa, H. Kikutani, H. Kim, S. King, J. Kisiel, A. Knight, A. Knox, T. Kobata, T. Kobayashi, L. Koch, T. Koga, A. Konaka, L. L. Kormos, Y. Koshio, A. Kostin, K. Kowalik, H. Kubo, Y. Kudenko, N. Kukita, S. Kuribayashi, R. Kurjata, T. Kutter, M. Kuze, L. Labarga, J. Lagoda, M. Lamoureux, D. Last, M. Laveder, M. Lawe, M. Licciardi, T. Lindner, R. P. Litchfield, S. L. Liu, X. Li, A. Longhin, L. Ludovici, X. Lu, T. Lux, L. N. Machado, L. Magaletti, K. Mahn, M. Malek, S. Manly, L. Maret, A. D. Marino, L. Marti-Magro, J. F. Martin, T. Maruyama, T. Matsubara, K. Matsushita, Matveev, V, C. Mauger, K. Mavrokoridis, E. Mazzucato, M. McCarthy, N. McCauley, J. McElwee, K. S. McFarland, C. McGrew, A. Mefodiev, C. Metelko, M. Mezzetto, A. Minamino, O. Mineev, S. Mine, M. Miura, L. Molina Bueno, S. Moriyama, J. Morrison, Th A. Mueller, L. Munteanu, S. Murphy, Y. Nagai, T. Nakadaira, M. Nakahata, Y. Nakajima, A. Nakamura, K. G. Nakamura, K. Nakamura, S. Nakayama, T. Nakaya, K. Nakayoshi, C. Nantais, C. E. R. Naseby, T. Ngoc, K. Niewczas, K. Nishikawa, Y. Nishimura, T. S. Nonnenmacher, F. Nova, P. Novella, J. Nowak, J. C. Nugent, H. M. O'Keeffe, L. O'Sullivan, T. Odagawa, T. Ogawa, R. Okada, K. Okumura, T. Okusawa, S. M. Oser, R. A. Owen, Y. Oyama, Palladino, V, J. L. Palomino, Paolone, V, W. C. Parker, S. Parsa, J. Pasternak, P. Paudyal, M. Pavin, D. Payne, G. C. Penn, L. Pickering, C. Pidcott, G. Pintaudi, E. S. Pinzon Guerra, C. Pistillo, B. Popov, K. Porwit, M. Posiadala-Zezula, A. Pritchard, B. Quilain, T. Radermacher, E. Radicioni, B. Radics, P. N. Ratoff, E. Reinherz-Aronis, C. Riccio, E. Rondio, S. Roth, A. Rubbia, A. C. Ruggeri, C. Ruggles, A. Rychter, K. Sakashita, F. Sanchez, G. Santucci, C. M. Schloesser, K. Scholberg, J. Schwehr, M. Scott, Y. Seiya, T. Sekiguchi, H. Sekiya, D. Sgalaberna, R. Shah, A. Shaikhiev, F. Shaker, A. Shaykina, M. Shiozawa, W. Shorrock, A. Shvartsman, A. Smirnov, M. Smy, J. T. Sobczyk, H. Sobel, F. J. P. Soler, Y. Sonoda, J. Steinmann, S. Suvorov, A. Suzuki, S. Y. Suzuki, Y. Suzuki, A. A. Sztuc, M. Tada, M. Tajima, A. Takeda, Y. Takeuchi, H. K. Tanaka, H. A. Tanaka, S. Tanaka, Y. Tanihara, N. Teshima, L. F. Thompson, W. Toki, C. Touramanis, T. Towstego, K. M. Tsui, T. Tsukamoto, M. Tzanov, Y. Uchida, M. Vagins, S. Valder, Z. Vallari, D. Vargas, G. Vasseur, C. Vilela, W. G. S. Vinning, T. Vladisavljevic, V. V. Volkov, T. Wachala, J. Walker, J. G. Walsh, Y. Wang, D. Wark, M. O. Wascko, A. Weber, R. Wendell, M. J. Wilking, C. Wilkinson, J. R. Wilson, R. J. Wilson, K. Wood, C. Wret, Y. Yamada, K. Yamamoto, C. Yanagisawa, G. Yang, T. Yano, K. Yasutome, S. Yen, N. Yershov, M. Yokoyama, T. Yoshida, M. Yu, A. Zalewska, J. Zalipska, K. Zaremba, G. Zarnecki, M. Ziembicki, E. D. Zimmerman, M. Zito, S. Zsoldos, A. Zykova

PHYSICAL REVIEW D 101 ( 11 ) 2020.6

Language：English Publishing type：Research paper (scientific journal) Publisher：AMER PHYSICAL SOC

This paper presents the first combined measurement of the double-differential muon neutrino and antineutrino charged-current cross sections with no pions in the final state on hydrocarbon at the off-axis near detector of the T2K experiment. The data analyzed in this work comprise 5.8 x 10(20) and 6.3 x 10(20) protons on target in neutrino and antineutrino mode respectively, at a beam energy peak of 0.6 GeV. Using the two measured cross sections, the sum, difference, and asymmetry were calculated with the aim of better understanding the nuclear effects involved in such interactions. The extracted measurements have been compared with the prediction from different Monte Carlo generators and theoretical models showing that the difference between the two cross sections have interesting sensitivity to nuclear effects.

DOI： 10.1103/PhysRevD.101.112001

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Gamma-ray spectra from thermal neutron capture on gadolinium-155 and natural gadolinium Reviewed

Tomoyuki Tanaka, Kaito Hagiwara, Enrico Gazzola, Ajmi Ali, Iwa Ou, Takashi Sudo, Pretam Kumar Das, Mandeep Singh Reen, Rohit Dhir, Yusuke Koshio, Makoto Sakuda, Atsushi Kimura, Shoji Nakamura, Nobuyuki Iwamoto, Hideo Harada, Gianmaria Collazuol, Sebastian Lorenz, Michael Wurm, William Focillon, Michel Gonin, Takatomi Yano

PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS 2020 ( 4 ) 2020.4

Language：English Publishing type：Research paper (scientific journal) Publisher：OXFORD UNIV PRESS INC

Natural gadolinium is widely used for its excellent thermal neutron capture cross section, because of its two major isotopes: Gd-155 and Gd-157. We measured the gamma-ray spectra produced from the thermal neutron capture on targets comprising a natural gadolinium film and enriched Gd-155 (in Gd2O3 powder) in the energy range from 0.11 MeV to 8.0 MeV, using the ANNRI germanium spectrometer at MLF, J-PARC. The freshly analyzed data of the Gd-155(n,gamma) reaction are used to improve our previously developed model (ANNRI-Gd model) for the Gd-157(n,gamma) reaction [K. Hagiwara et al. [ANNRI-Gd Collaboration], Prog. Theor. Exp. Phys. 2019, 023D01 (2019)], and its performance confirmed with the independent data from the Gd-nat(n,gamma) reaction. This article completes the development of an efficient Monte Carlo model required to simulate and analyze particle interactions involving the thermal neutron captures on gadolinium in any relevant future experiments.

DOI： 10.1093/ptep/ptaa015

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Evaluation of gadolinium's action on water Cherenkov detector systems with EGADS Reviewed

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, Bandac, I, J. Perez, J. Amey, R. P. Litchfield, A. Sztuc, Y. Uchida, A. Goldsack, C. Simpson, D. Wark, L. H. Anthony, N. McCauley, A. Pritchard, F. Di Lodovico, B. Richards, A. Cole, M. Thiesse, L. Thompson, J. Imber, S. Cao, K. Ito, Y. Takeuchi, R. Akutsu, Y. Nishimura, K. Okumura, S. Hirota, F. Muto, M. Yokoyama, Y. Suda, H. Zhang

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 959 163549 - 163549 2020.4

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER

Used for both proton decay searches and neutrino physics, large water Cherenkov (WC) detectors have been very successful tools in particle physics. They are notable for their large masses and charged particle detection capabilities. While current WC detectors reconstruct charged particle tracks over a wide energy range, they cannot efficiently detect neutrons. Gadolinium (Gd) has the largest thermal neutron capture cross section of all stable nuclei and produces an 8 MeV gamma cascade that can be detected with high efficiency. Because of the many new physics opportunities that neutron tagging with a Gd salt dissolved in water would open up, a large-scale R&D program called EGADS was established to demonstrate this technique's feasibility. EGADS features all the components of a WC detector, chiefly a 200-ton stainless steel water tank furnished with 240 photo-detectors, DAQ, and a water system that removes all impurities from water while keeping Gd in solution. In this paper we discuss the milestones towards demonstrating the feasibility of this novel technique, and the features of EGADS in detail.

DOI： 10.1016/j.nima.2020.163549

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Search for Electron Antineutrino Appearance in a Long-Baseline Muon Antineutrino Beam Reviewed

K. Abe, R. Akutsu, A. Ali, C. Alt, C. Andreopoulos, L. Anthony, M. Antonova, S. Aoki, A. Ariga, Y. Asada, Y. Ashida, E. T. Atkin, Y. Awataguchi, S. Ban, M. Barbi, G. J. Barker, G. Barr, D. Barrow, C. Barry, M. Batkiewicz-Kwasniak, A. Beloshapkin, F. Bench, Berardi, V, S. Berkman, L. Berns, S. Bhadra, S. Bienstock, A. Blondel, S. Bolognesi, B. Bourguille, S. B. Boyd, D. Brailsford, A. Bravar, D. Bravo Berguno, C. Bronner, A. Bubak, M. Buizza Avanzini, J. Calcutt, T. Campbell, S. Cao, S. L. Cartwright, M. G. Catanesi, A. Cervera, A. Chappell, C. Checchia, D. Cherdack, N. Chikuma, G. Christodoulou, J. Coleman, G. Collazuol, L. Cook, D. Coplowe, A. Cudd, A. Dabrowska, G. De Rosa, T. Dealtry, P. F. Denner, S. R. Dennis, C. Densham, F. Di Lodovico, N. Dokania, S. Dolan, T. A. Doyle, O. Drapier, J. Dumarchez, P. Dunne, L. Eklund, S. Emery-Schrenk, A. Ereditato, P. Fernandez, T. Feusels, A. J. Finch, G. A. Fiorentini, G. Fiorillo, C. Francois, M. Friend, Y. Fujii, R. Fujita, D. Fukuda, R. Fukuda, Y. Fukuda, K. Fusshoeller, K. Gameil, C. Giganti, T. Golan, M. Gonin, A. Gorin, M. Guigue, D. R. Hadley, J. T. Haigh, P. Hamacher-Baumann, M. Hartz, T. Hasegawa, N. C. Hastings, T. Hayashino, Y. Hayato, A. Hiramoto, M. Hogan, J. Holeczek, N. T. Hong Van, F. Iacob, A. K. Ichikawa, M. Ikeda, T. Ishida, T. Ishii, M. Ishitsuka, K. Iwamoto, A. Izmaylov, M. Jakkapu, B. Jamieson, S. J. Jenkins, C. Jesus-Valls, M. Jiang, S. Johnson, P. Jonsson, C. K. Jung, M. Kabirnezhad, A. C. Kaboth, T. Kajita, H. Kakuno, J. Kameda, D. Karlen, S. P. Kasetti, Y. Kataoka, T. Katori, Y. Kato, E. Kearns, M. Khabibullin, A. Khotjantsev, T. Kikawa, H. Kim, J. Kim, S. King, J. Kisiel, A. Knight, A. Knox, T. Kobayashi, L. Koch, T. Koga, A. Konaka, L. L. Kormos, Y. Koshio, A. Kostin, K. Kowalik, H. Kubo, Y. Kudenko, N. Kukita, S. Kuribayashi, R. Kurjata, T. Kutter, M. Kuze, L. Labarga, J. Lagoda, M. Lamoureux, M. Laveder, M. Lawe, M. Licciardi, T. Lindner, R. P. Litcheld, S. L. Liu, X. Li, A. Longhin, L. Ludovici, X. Lu, T. Lux, L. N. Machado, L. Magaletti, K. Mahn, M. Malek, S. Manly, L. Maret, A. D. Marino, L. Marti-Magro, J. F. Martin, T. Maruyama, T. Matsubara, K. Matsushita, Matveev, V, K. Mavrokoridis, E. Mazzucato, M. McCarthy, N. McCauley, K. S. McFarland, C. McGrew, A. Mefodiev, C. Metelko, M. Mezzetto, A. Minamino, O. Mineev, S. Mine, M. Miura, L. Molina Bueno, S. Moriyama, J. Morrison, Th A. Mueller, L. Munteanu, S. Murphy, Y. Nagai, T. Nakadaira, M. Nakahata, Y. Nakajima, A. Nakamura, K. G. Nakamura, K. Nakamura, S. Nakayama, T. Nakaya, K. Nakayoshi, C. Nantais, T. Ngoc, K. Niewczas, K. Nishikawa, Y. Nishimura, T. S. Nonnenmacher, F. Nova, P. Novella, J. Nowak, J. C. Nugent, H. M. O'Keeffe, L. O'Sullivan, T. Odagawa, K. Okumura, T. Okusawa, S. M. Oser, R. A. Owen, Y. Oyama, Palladino, V, J. L. Palomino, Paolone, V, W. C. Parker, J. Pasternak, P. Paudyal, M. Pavin, D. Payne, G. C. Penn, L. Pickering, C. Pidcott, G. Pintaudi, E. S. Pinzon Guerra, C. Pistillo, B. Popov, K. Porwit, M. Posiadala-Zezula, A. Pritchard, B. Quilain, T. Radermacher, E. Radicioni, B. Radics, P. N. Rato, E. Reinherz-Aronis, C. Riccio, E. Rondio, S. Roth, A. Rubbia, A. C. Ruggeri, C. A. Ruggles, A. Rychter, K. Sakashita, F. Sanchez, C. M. Schloesser, K. Scholberg, J. Schwehr, M. Scott, Y. Seiya, T. Sekiguchi, H. Sekiya, D. Sgalaberna, R. Shah, A. Shaikhiev, F. Shaker, A. Shaykina, M. Shiozawa, W. Shorrock, A. Shvartsman, A. Smirnov, M. Smy, J. T. Sobczyk, H. Sobel, F. J. P. Soler, Y. Sonoda, J. Steinmann, S. Suvorov, A. Suzuki, S. Y. Suzuki, Y. Suzuki, A. A. Sztuc, M. Tada, M. Tajima, A. Takeda, Y. Takeuchi, H. K. Tanaka, H. A. Tanaka, S. Tanaka, L. F. Thompson, W. Toki, C. Touramanis, T. Towstego, K. M. Tsui, T. Tsukamoto, M. Tzanov, Y. Uchida, W. Uno, M. Vagins, S. Valder, Z. Vallari, D. Vargas, G. Vasseur, C. Vilela, W. G. S. Vinning, T. Vladisavljevic, V. V. Volkov, T. Wachala, J. Walker, J. G. Walsh, Y. Wang, D. Wark, M. O. Wascko, A. Weber, R. Wendell, M. J. Wilking, C. Wilkinson, J. R. Wilson, R. J. Wilson, K. Wood, C. Wret, Y. Yamada, K. Yamamoto, C. Yanagisawa, G. Yang, T. Yano, K. Yasutome, S. Yen, N. Yershov, M. Yokoyama, T. Yoshida, M. Yu, A. Zalewska, J. Zalipska, K. Zaremba, G. Zarnecki, M. Ziembicki, E. D. Zimmerman, M. Zito, S. Zsoldos, A. Zykova

PHYSICAL REVIEW LETTERS 124 ( 16 ) 2020.4

Language：English Publishing type：Research paper (scientific journal) Publisher：AMER PHYSICAL SOC

Electron antineutrino appearance is measured by the T2K experiment in an accelerator-produced antineutrino beam, using additional neutrino beam operation to constrain parameters of the Pontecorvo-Maki-Nakagawa-Sakata (PMNS) mixing matrix. T2K observes 15 candidate electron antineutrino events with a background expectation of 9.3 events. Including information from the kinematic distribution of observed events, the hypothesis of no electron antineutrino appearance is disfavored with a significance of 2.40s and no discrepancy between data and PMNS predictions is found. A complementary analysis that introduces an additional free parameter which allows non-PMNS values of electron neutrino and antineutrino appearance also finds no discrepancy between data and PMNS predictions.

DOI： 10.1103/PhysRevLett.124.161802

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Other Link： http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevLett.124.161802/fulltext

Constraint on the matter-antimatter symmetry-violating phase in neutrino oscillations

NATURE 580 ( 7803 ) 339 - + 2020.4

Language：English Publishing type：Research paper (scientific journal) Publisher：NATURE PUBLISHING GROUP

The charge-conjugation and parity-reversal (CP) symmetry of fundamental particles is a symmetry between matter and antimatter. Violation of this CP symmetry was first observed in 1964(1), and CP violation in the weak interactions of quarks was soon established(2). Sakharov proposed(3) that CP violation is necessary to explain the observed imbalance of matter and antimatter abundance in the Universe. However, CP violation in quarks is too small to support this explanation. So far, CP violation has not been observed in non-quark elementary particle systems. It has been shown that CP violation in leptons could generate the matter-antimatter disparity through a process called leptogenesis(4). Leptonic mixing, which appears in the standard model's charged current interactions(5,6), provides a potential source of CP violation through a complex phase dCP, which is required by some theoretical models of leptogenesis(7-9). This CP violation can be measured in muon neutrino to electron neutrino oscillations and the corresponding antineutrino oscillations, which are experimentally accessible using accelerator-produced beams as established by the Tokai-to-Kamioka (T2K) and NOvA experiments(10,11). Until now, the value of dCP has not been substantially constrained by neutrino oscillation experiments. Here we report a measurement using long-baseline neutrino and antineutrino oscillations observed by the T2K experiment that shows a large increase in the neutrino oscillation probability, excluding values of dCP that result in a large increase in the observed antineutrino oscillation probability at three standard deviations (3 sigma). The 3 sigma confidence interval for delta(CP), which is cyclic and repeats every 2p, is [-3.41, -0.03] for the so-called normal mass ordering and [-2.54, -0.32] for the inverted mass ordering. Our results indicate CP violation in leptons and our method enables sensitive searches for matter-antimatter asymmetry in neutrino oscillations using accelerator-produced neutrino beams. Future measurements with larger datasets will test whether leptonic CP violation is larger than the CP violation in quarks.

DOI： 10.1038/s41586-020-2177-0

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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 ) 2020.3

Language：English Publishing type：Research paper (scientific journal) Publisher：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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Measurement of the muon neutrino charged-current single pi(+) production on hydrocarbon using the T2K off-axis near detector ND280

K. Abe, R. Akutsu, A. Ali, C. Alt, J. Amey, C. Andreopoulos, L. Anthony, M. Antonova, S. Aoki, A. Ariga, Y. Ashida, E. T. Atkin, Y. Awataguchi, Y. Azuma, S. Ban, M. Barbi, G. J. Barker, G. Barr, C. Barry, M. Batkiewicz-Kwasniak, A. Beloshapkin, F. Bench, V. Berardi, S. Berkman, R. M. Berner, L. Berns, S. Bhadra, S. Bienstock, A. Blondel, S. Bolognesi, S. Bordoni, B. Bourguille, S. B. Boyd, D. Brailsford, A. Bravar, C. Bronner, M. Buizza Avanzini, J. Calcutt, R. G. Calland, T. Campbell, S. Cao, S. L. Cartwright, R. Castillo, M. G. Catanesi, A. Cervera, A. Chappell, C. Checchia, D. Cherdack, N. Chikuma, G. Christodoulou, J. Coleman, G. Collazuol, L. Cook, D. Coplowe, A. Cudd, A. Dabrowska, G. De Rosa, T. Dealtry, P. F. Denner, S. R. Dennis, C. Densham, F. Di Lodovico, N. Dokania, S. Dolan, O. Drapier, K. E. Duffy, J. Dumarchez, P. Dunne, L. Eklund, S. Emery-Schrenk, A. Ereditato, P. Fernandez, T. Feusels, A. J. Finch, G. A. Fiorentini, G. Fiorillo, C. Francois, M. Friend, Y. Fujii, R. Fujita, D. Fukuda, R. Fukuda, Y. Fukuda, K. Gameil, A. Garcia, C. Giganti, F. Gizzarelli, T. Golan, M. Gonin, A. Gorin, M. Guigue, D. R. Hadley, L. Haegel, J. T. Haigh, P. Hamacher-Baumann, D. Hansen, J. Harada, M. Hartz, T. Hasegawa, N. C. Hastings, T. Hayashino, Y. Hayato, A. Hillairet, T. Hiraki, A. Hiramoto, S. Hirota, M. Hogan, J. Holeczek, N. T. Hong Van, F. Hosomi, K. Huang, F. Iacob, A. K. Ichikawa, M. Ikeda, J. Imber, T. Inoue, J. Insler, R. A. Intonti, T. Ishida, T. Ishii, M. Ishitsuka, E. Iwai, K. Iwamoto, A. Izmaylov, B. Jamieson, S. J. Jenkins, C. Jesus-Valls, M. Jiang, S. Johnson, P. Jonsson, C. K. Jung, M. Kabirnezhad, A. C. Kaboth, T. Kajita, H. Kakuno, J. Kameda, D. Karlen, Y. Kataoka, T. Katori, Y. Kato, E. Kearns, M. Khabibullin, A. Khotjantsev, H. Kim, J. Kim, S. King, J. Kisiel, A. Knight, A. Knox, T. Kobayashi, L. Koch, T. Koga, P. P. Koller, A. Konaka, L. L. Kormos, Y. Koshio, K. Kowalik, H. Kubo, Y. Kudenko, N. Kukita, R. Kurjata, T. Kutter, M. Kuze, L. Labarga, J. Lagoda, I. Lamont, M. Lamoureux, P. Lasorak, M. Laveder, M. Lawe, M. Licciardi, T. Lindner, Z. J. Liptak, R. P. Litchfield, S. L. Liu, X. Li, A. Longhin, J. P. Lopez, T. Lou, L. Ludovici, X. Lu, T. Lux, L. N. Machado, L. Magaletti, K. Mahn, M. Malek, S. Manly, L. Maret, A. D. Marino, J. F. Martin, P. Martins, S. Martynenko, T. Maruyama, T. Matsubara, K. Matsushita, V. Matveev, K. Mavrokoridis, W. Y. Ma, E. Mazzucato, M. McCarthy, N. McCauley, K. S. McFarland, C. McGrew, A. Mefodiev, C. Metelko, M. Mezzetto, A. Minamino, O. Mineev, S. Mine, A. Missert, M. Miura, L. Molina Bueno, S. Moriyama, J. Morrison, Th. A. Mueller, L. Munteanu, S. Murphy, Y. Nagai, T. Nakadaira, M. Nakahata, Y. Nakajima, A. Nakamura, K. G. Nakamura, K. Nakamura, K. D. Nakamura, Y. Nakanishi, S. Nakayama, T. Nakaya, K. Nakayoshi, C. Nantais, T. V. Ngoc, C. Nielsen, K. Niewczas, K. Nishikawa, Y. Nishimura, T. S. Nonnenmacher, F. Nova, P. Novella, J. Nowak, J. C. Nugent, H. M. O'Keeffe, L. O'Sullivan, K. Okumura, T. Okusawa, W. Oryszczak, S. M. Oser, T. Ovsyannikova, R. A. Owen, Y. Oyama, V. Palladino, J. L. Palomino, V. Paolone, W. C. Parker, N. D. Patel, P. Paudyal, M. Pavin, D. Payne, G. C. Penn, Y. Petrov, L. Pickering, C. Pidcott, E. S. Pinzon Guerra, C. Pistillo, B. Popov, K. Porwit, M. Posiadala-Zezula, J. -M. Poutissou, A. Pritchard, P. Przewlocki, B. Quilain, T. Radermacher, E. Radicioni, B. Radics, P. N. Ratoff, M. A. Rayner, E. Reinherz-Aronis, C. Riccio, E. Rondio, B. Rossi, S. Roth, A. Rubbia, A. C. Ruggeri, A. Rychter, K. Sakashita, F. Sanchez, S. Sasaki, E. Scantamburlo, C. M. Schloesser, K. Scholberg, J. Schwehr, M. Scott, Y. Seiya, T. Sekiguchi, H. Sekiya, D. Sgalaberna, R. Shah, A. Shaikhiev, F. Shaker, D. Shaw, A. Shaykina, M. Shiozawa, T. Shirahige, W. Shorrock, A. Shvartsman, A. Smirnov, M. Smy, J. T. Sobczyk, H. Sobel, F. J. P. Soler, Y. Sonoda, J. Steinmann, T. Stewart, P. Stowell, Y. Suda, S. Suvorov, A. Suzuki, S. Y. Suzuki, Y. Suzuki, A. A. Sztuc, R. Tacik, M. Tada, A. Takeda, Y. Takeuchi, R. Tamura, H. K. Tanaka, H. A. Tanaka, S. Tanaka, T. Thakore, L. F. Thompson, S. Tobayama, W. Toki, T. Tomura, C. Touramanis, K. M. Tsui, T. Tsukamoto, M. Tzanov, Y. Uchida, W. Uno, M. Vagins, S. Valder, Z. Vallari, D. Vargas, G. Vasseur, C. Vilela, W. G. S. Vinning, T. Vladisavljevic, V. V. Volkov, T. Wachala, J. Walker, J. G. Walsh, C. W. Walter, Y. Wang, D. Wark, M. O. Wascko, A. Weber, R. Wendell, M. J. Wilking, C. Wilkinson, J. R. Wilson, R. J. Wilson, K. Wood, C. Wret, Y. Yamada, K. Yamamoto, S. Yamasu, C. Yanagisawa, G. Yang, T. Yano, K. Yasutome, S. Yen, N. Yershov, M. Yokoyama, T. Yoshida, M. Yu, A. Zalewska, J. Zalipska, L. Zambelli, K. Zaremba, G. Zarnecki, M. Ziembicki, E. D. Zimmerman, M. Zito, S. Zsoldos, A. Zykova

PHYSICAL REVIEW D 101 ( 1 ) 012007 - 012007 2020.1

Language：English Publishing type：Research paper (scientific journal) Publisher：AMER PHYSICAL SOC

We report the measurements of the single and double differential cross section of muon neutrino charged-current interactions on carbon with a single positively charged pion in the final state at the T2K off-axis near detector using 5.56 x 10(20) protons on target. The analysis uses data control samples for the background subtraction and the cross section signal, defined as a single negatively charged muon and a single positively charged pion exiting from the target nucleus, is extracted using an unfolding method. The model-dependent cross section, integrated over the T2K off-axis neutrino beam spectrum peaking at 0.6 GeV, is measured to be sigma = (11.76 +/- 0.44(stat) +/- 2.39(syst)) x 10(-40) cm(2) nucleon(-1). Various differential cross sections are measured, including the first measurement of the Adler angles for single charged pion production in neutrino interactions with heavy nuclei target.

DOI： 10.1103/PhysRevD.101.012007

Web of Science

arXiv

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R&D on the gas injection system of Beam Induced Fluorescence Monitor toward MW beam power at the J-PARC Neutrino Beam-line

A. Nakamura, Y. Koshio, M. Friend, K. Sakashita

16TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS (TAUP 2019) 1468 2020

Language：English Publishing type：Research paper (international conference proceedings) Publisher：IOP PUBLISHING LTD

A Beam Induced Fluorescence (BIF) monitor is being developed as an essential part of the monitor update toward MW beam power operation at the J-PARC neutrino beam line, where a 30 GeV proton beam is extracted, bent and struck onto a 90-cm-long graphite target to produce an intense and nearly pure muon (anti-)neutrino beam for the Tokai-to-Kamioka(T2K) experiment. A BIF monitor can measure the proton beam profile non-destructively and continuously spill-by-spill with fluorescence light produced by proton-N-2 interactions. In order to generate enough light to measure the profile precisely, it is necessary to temporarily increase the vacuum pressure near the BIF interaction point up to similar to 10(-2) Pa during each beam spill while keeping the average pressure low (10(-4) to 10(-6) Pa) at other locations to protect vacuum equipment. Therefore, R&D of a pulsed gas injection system satisfying these requirements is in progress. We will report the recent R&D status of the gas injection system and prospects toward operation of a prototype monitor which we plan to install this fall 2019.

DOI： 10.1088/1742-6596/1468/1/012213

Web of Science

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Measurement of neutrino and antineutrino neutral-current quasielasticlike interactions on oxygen by detecting nuclear deexcitation $\gamma$ rays Reviewed

Abe, K., Akutsu, R., Ali, A., Alt, C., Andreopoulos, C., Anthony, L., Antonova, M., Aoki, S., Ariga, A., Ashida, Y., Atkin, E.T., Awataguchi, Y., Ban, S., Barbi, M., Barker, G.J., Barr, G., Barry, C., Batkiewicz-Kwasniak, M., Beloshapkin, A., Bench, F., Berardi, V., Berkman, S., Berns, L., Bhadra, S., Bienstock, S., Blondel, A., Bolognesi, S., Bourguille, B., Boyd, S.B., Brailsford, D., Bravar, A., Bravo Berguño, D., Bronner, C., Bubak, A., Buizza Avanzini, M., Calcutt, J., Campbell, T., Cao, S., Cartwright, S.L., Catanesi, M.G., Cervera, A., Chappell, A., Checchia, C., Cherdack, D., Chikuma, N., Christodoulou, G., Coleman, J., Collazuol, G., Cook, L., Coplowe, D., Cudd, A., Dabrowska, A., De Rosa, G., Dealtry, T., Denner, P.F., Dennis, S.R., Densham, C., Di Lodovico, F., Dokania, N., Dolan, S., Drapier, O., Dumarchez, J., Dunne, P., Eklund, L., Emery-Schrenk, S., Ereditato, A., Fernandez, P., Feusels, T., Finch, A.J., Fiorentini, G.A., Fiorillo, G., Francois, C., Friend, M., Fujii, Y., Fujita, R., Fukuda, D., Fukuda, R., Fukuda, Y., Gameil, K., Giganti, C., Golan, T., Gonin, M., Gorin, A., Guigue, M., Hadley, D.R., Haigh, J.T., Hamacher-Baumann, P., Hartz, M., Hasegawa, T., Hastings, N.C., Hayashino, T., Hayato, Y., Hiramoto, A., Hogan, M., Holeczek, J., Hong Van, N.T., Iacob, F., Ichikawa, A.K., Ikeda, M., Ishida, T., Ishii, T., Ishitsuka, M., Iwamoto, K., Izmaylov, A., Jamieson, B., Jenkins, S.J., Jesús-Valls, C., Jiang, M., Johnson, S., Jonsson, P., Jung, C.K., Kabirnezhad, M., Kaboth, A.C., Kajita, T., Kakuno, H., Kameda, J., Karlen, D., Kasetti, S.P., Kataoka, Y., Katori, T., Kato, Y., Kearns, E., Khabibullin, M., Khotjantsev, A., Kikawa, T., Kim, H., Kim, J., King, S., Kisiel, J., Knight, A., Knox, A., Kobayashi, T., Koch, L., Koga, T., Konaka, A., Kormos, L.L., Koshio, Y., Kowalik, K., Kubo, H., Kudenko, Y., Kukita, N., Kuribayashi, S., Kurjata, R., Kutter, T., Kuze, M., Labarga, L., Lagoda, J., Lamoureux, M., Laveder, M., Lawe, M., Licciardi, M., Lindner, T., Litchfield, R.P., Liu, S.L., Li, X., Longhin, A., Ludovici, L., Lu, X., Lux, T., Machado, L.N., Magaletti, L., Mahn, K., Malek, M., Manly, S., Maret, L., Marino, A.D., Martin, J.F., Maruyama, T., Matsubara, T., Matsushita, K., Matveev, V., Mavrokoridis, K., Mazzucato, E., McCarthy, M., McCauley, N., McFarland, K.S., McGrew, C., Mefodiev, A., Metelko, C., Mezzetto, M., Minamino, A., Mineev, O., Mine, S., Miura, M., Molina Bueno, L., Moriyama, S., Morrison, J., Mueller, Th.A., Munteanu, L., Murphy, S., Nagai, Y., Nakadaira, T., Nakahata, M., Nakajima, Y., Nakamura, A., Nakamura, K.G., Nakamura, K., Nakayama, S., Nakaya, T., Nakayoshi, K., Nantais, C., Ngoc, T.V., Niewczas, K., Nishikawa, K., Nishimura, Y., Nonnenmacher, T.S., Nova, F., Novella, P., Nowak, J., Nugent, J.C., O'Keeffe, H.M., O'Sullivan, L., Odagawa, T., Okumura, K., Okusawa, T., Oser, S.M., Owen, R.A., Oyama, Y., Palladino, V., Palomino, J.L., Paolone, V., Parker, W.C., Paudyal, P., Pavin, M., Payne, D., Penn, G.C., Pickering, L., Pidcott, C., Pinzon Guerra, E.S., Pistillo, C., Popov, B., Porwit, K., Posiadala-Zezula, M., Pritchard, A., Quilain, B., Radermacher, T., Radicioni, E., Radics, B., Ratoff, P.N., Reinherz-Aronis, E., Riccio, C., Rondio, E., Roth, S., Rubbia, A., Ruggeri, A.C., Rychter, A., Sakashita, K., Sánchez, F., Schloesser, C.M., Scholberg, K., Schwehr, J., Scott, M., Seiya, Y., Sekiguchi, T., Sekiya, H., Sgalaberna, D., Shah, R., Shaikhiev, A., Shaker, F., Shaykina, A., Shiozawa, M., Shorrock, W., Shvartsman, A., Smirnov, A., Smy, M., Sobczyk, J.T., Sobel, H., Soler, F.J.P., Sonoda, Y., Steinmann, J., Suvorov, S., Suzuki, A., Suzuki, S.Y., Suzuki, Y., Sztuc, A.A., Tada, M., Tajima, M., Takeda, A., Takeuchi, Y., Tanaka, H.K., Tanaka, H.A., Tanaka, S., Thompson, L.F., Toki, W., Touramanis, C., Tsui, K.M., Tsukamoto, T., Tzanov, M., Uchida, Y., Uno, W., Vagins, M., Valder, S., Vallari, Z., Vargas, D., Vasseur, G., Vilela, C., Vinning, W.G.S., Vladisavljevic, T., Volkov, V.V., Wachala, T., Walker, J., Walsh, J.G., Wang, Y., Wark, D., Wascko, M.O., Weber, A., Wendell, R., Wilking, M.J., Wilkinson, C., Wilson, J.R., Wilson, R.J., Wood, K., Wret, C., Yamada, Y., Yamamoto, K., Yanagisawa, C., Yang, G., Yano, T., Yasutome, K., Yen, S., Yershov, N., Yokoyama, M., Yoshida, T., Yu, M., Zalewska, A., Zalipska, J., Zaremba, K., Zarnecki, G., Ziembicki, M., Zimmerman, E.D., Zito, M., Zsoldos, S., Zykova, A.

Phys.Rev.D 100 ( 11 ) 112009 - 112009 2019.12

Development of Geant4 based simulation for Super-Kamiokande

Masayuki Harada, Yusuke Koshio, Kaito Hagiwara

Proceedings of The 4th KMI International Symposium — PoS(KMI2019) 356 049 2019.11

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