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21 results on '"R. A. Wendell"'

1. Search for proton decay via p→e+π0 and p→μ+π0 with an enlarged fiducial volume in Super-Kamiokande I-IV

Author

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

Subjects
Physics, 010308 nuclear & particles physics, Proton decay, Detector, 01 natural sciences, Lower limit, Nuclear physics, Volume (thermodynamics), 0103 physical sciences, Pi, Atmospheric neutrino, 010306 general physics, Fiducial marker, Super-Kamiokande
Abstract

We have searched for proton decay via p→e+π0 and p→μ+π0 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 Super-Kamiokande 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+π0 and one candidate remains for p→μ+π0 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: τ/B(p→e+π0)>2.4×1034 years and τ/B(p→μ+π0)>1.6×1034 years at 90% confidence level.

Published
2020

2. First measurement of the charged current ν¯μ double differential cross section on a water target without pions in the final state

Author

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

Subjects
Physics, Scattering cross-section, 010308 nuclear & particles physics, 0103 physical sciences, media_common.cataloged_instance, Library science, Christian ministry, Early career, European union, 010306 general physics, 01 natural sciences, media_common
Abstract

We thank the J-PARC staff for superb accelerator performance. We thank the CERN NA61/SHINE Collaboration for providing valuable particle production data. We acknowledge the support of MEXT, Japan; NSERC (Grant No. SAPPJ-2014-00031), the NRC and CFI, Canada; the CEA and CNRS/IN2P3, France; the DFG, Germany; the INFN, Italy; the National Science Centre and Ministry of Science and Higher Education, Poland; the RSF (Grant No. 19-12-00325) and the Ministry of Science and Higher Education, Russia; MINECO and ERDF funds, Spain; the SNSF and SERI, Switzerland; the STFC, UK; and the DOE, USA. We also thank CERN for the UA1/NOMAD magnet, DESY for the HERA-B magnet mover system, NII for SINET4, the WestGrid and SciNet consortia in Compute Canada, and GridPP in the United Kingdom. In addition, participation of individual researchers and institutions has been further supported by funds from the ERC (FP7), “la Caixa” Foundation (ID 100010434, fellowship code LCF/BQ/IN17/11620050), the European Union’s Horizon 2020 Research and Innovation Programme under the Marie Sklodowska- Curie Grants Agreement No. 713673 and No. 754496, and H2020 Grant No. RISE-GA822070-JENNIFER2 2020 and No. RISE-GA872549-SK2HK; the JSPS, Japan; the Royal Society, UK; French ANR Grant No. ANR-19- CE31-0001; and the DOE Early Career programme, USA.

Published
2020

3. Measurement of the muon neutrino charged-current single π+ production on hydrocarbon using the T2K off-axis near detector ND280

Author

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

Subjects
Physics, Muon, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, 7. Clean energy, 01 natural sciences, Nuclear physics, Cross section (physics), Pion, 0103 physical sciences, High Energy Physics::Experiment, Muon neutrino, Production (computer science), Neutrino, Nuclear Experiment, 010306 general physics, Nucleon, Charged current
Abstract

We report the measurements of 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 $5.56\times10^{20}$ 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 $\sigma = (11.76 \pm 0.44 \text{(stat)} \pm 2.39 \text{(syst)}) \times 10^{-40} \text{cm}^2$~$\text{nucleon}^{-1}$. 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.

Published
2020

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

Author

E. Kearns, Masashi Yokoyama, T. Sugimoto, T. Towstego, T. Ishizuka, Y. Hayato, Tsuyoshi Nakaya, R. Akutsu, L. H. V. Anthony, C. W. Walter, F. Di Lodovico, C. Kachulis, T. Hayashino, C. K. Jung, Y. Kuno, K. Nishijima, A. Konaka, A. Minamino, N. McCauley, C. M. Nantais, Masato Shiozawa, Y. Choi, L. Ludovici, N. J. Griskevich, M. Vagins, M. Kuze, J. L. Raaf, Yusuke Koshio, Atsushi Takeda, T. Sekiguchi, P. de Perio, B. Bodur, V. Takhistov, Hiroyuki Sekiya, S. Molina Sedgwick, Soo-Bong Kim, Y. Fukuda, L. Wan, N. F. Calabria, Ke. Nakamura, Hirokazu Ishino, Y. Isobe, Y. Takeuchi, Lester D.R. Thompson, K. Martens, Y. Nishimura, A. T. Suzuki, K. Okamoto, Hiromasa Tanaka, M. Murdoch, J. Bian, C. Vilela, T. Tsukamoto, T. Okada, C. Xu, A. Pritchard, Makoto Hasegawa, W. R. Kropp, K. Sakashita, J. F. Martin, Takaaki Kajita, Yuichi Oyama, T. Nakadaira, M. Friend, M. Thiesse, G. De Rosa, C. Simpson, J. Imber, K. M. Tsui, Ahmed Ali, M. B. Smy, R. P. Litchfield, Seiko Hirota, Xiao-yan Li, G. Collazuol, Yuta Kato, T. Ishida, Rongkun Wang, T. Kikawa, M. Gonin, J. Xia, H. K. Tanaka, M. G. Catanesi, M. Ikeda, Makoto Sakuda, M. Miura, K. Frankiewicz, Yutaka Nakajima, Ll. Marti, K. Abe, J. L. Stone, Y. Okajima, K. Iyogi, J. Y. Kim, S. Mine, A. Orii, S. Cao, L. Labarga, Yoshihiro Suzuki, R. A. Wendell, M. J. Wilking, S. Berkman, J. L. Palomino, M. Hartz, K. Choi, Pablo Fernandez, C. Bronner, Shintaro Ito, R. A. Intonti, J. G. Learned, I. T. Lim, H. Miyabe, Kate Scholberg, H. Okazawa, S. Locke, S. Matsuno, B. Quilain, A. Takenaka, F. d. M. Blaszczyk, P. Weatherly, B. Richards, M. Koshiba, R. G. Park, Ko Okumura, Ke. Abe, K. Hagiwara, Yuuki Nakano, T. Mochizuki, Sara Sussman, J. Kameda, Th. A. Mueller, P. Mijakowski, Felix Iacob, J. S. Jang, Masaki Ishitsuka, M. O. Wascko, A. Goldsack, S. Nakayama, T. Yoshida, Song Chen, R. Tacik, D. Fukuda, K. S. Ganezer, E. Radicioni, John Hill, D. L. Wark, Y. Takahira, T. Yano, M. Mori, Y. Sonoda, Yoshitaka Itow, G. Pronost, T. Nakamura, M. Murrase, C. Yanagisawa, H. W. Sobel, Y. Ashida, K. Nakamura, S. Moriyama, G. Santucci, Masayuki Nakahata, Y. Uchida, T. Hasegawa, M. Jiang, Yasuhiro Kishimoto, Takashi Kobayashi, Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Super-Kamiokande, Science and Technology Facilities Council (STFC), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), DE ROSA, Gianfranca, and Et, Al

Subjects
Physics::Instrumentation and Detectors, neutrino oxygen neutral current interaction, Flux, KAMIOKANDE, 7. Clean energy, 01 natural sciences, neutrino: flux, High Energy Physics - Experiment, Physics, Particles & Fields, High Energy Physics - Experiment (hep-ex), neutrino: atmosphere, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Particle Physics Experiments, neutrino: supernova, Nuclear Experiment, Physics, neutrino nucleon: inelastic scattering, atmospheric neutrinos, Supernova, Physical Sciences, quasi-elastic cross section, Neutrino, Nucleon, channel cross section: measured, neutrino oxygen neutral current interaction, quasi-elastic cross section, atmospheric neutrinos, SuperKamiokande experiment, neutral current, Cherenkov counter: water, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astronomy & Astrophysics, EVENTS, Nuclear physics, 5/3, neutrino: spectrum, SEARCH, 0103 physical sciences, 010306 general physics, Cherenkov radiation, Science & Technology, Neutral current, background, 010308 nuclear & particles physics, Scattering, scattering, neutrino nucleus: interaction, MU, 13. Climate action, High Energy Physics::Experiment, Super-Kamiokande, oxygen, SuperKamiokande experiment, experimental results
Abstract

Neutral current (NC) interactions of atmospheric neutrinos on oxygen form one of the major backgrounds in the search for supernova relic neutrinos with water-based Cherenkov detectors. The NC channel is dominated by neutrino quasi-elastic (NCQE) scattering off nucleons inside $^{16}$O nuclei. In this paper we report the first measurement of NCQE cross section using atmospheric neutrinos at Super-Kamiokande (SK). The measurement used 2,778 live days of SK-IV data with a fiducial volume of 22.5 kiloton water. Within the visible energy window of 7.5-29.5 MeV, we observed $117$ events compared to the expected $71.9$ NCQE signal and $53.1$ background events. Weighted by the atmospheric neutrino spectrum from 160 MeV to 10 GeV, the flux averaged NCQE cross section is measured to be $(1.01\pm0.17(\text{stat.})^{+0.78}_{-0.30}(\text{sys.}))\times10^{-38}$ cm$^2$., Comment: 11 pages, 9 figures, submitted to PRD

Published
2019

5. Measurement of inclusive double-differential νμ charged-current cross section with improved acceptance in the T2K off-axis near detector

Author

Y. Takeuchi, K. Mavrokoridis, C. Riccio, T. Dealtry, L. Maret, R. M. Berner, A. Missert, P. N. Ratoff, Jan Kisiel, L. Labarga, T. Hayashino, T. Kutter, Patrick Dunne, M. Friend, Teppei Katori, S. B. Boyd, A. N. Khotjantsev, K. G. Nakamura, Y. Azuma, M. M. Khabibullin, M. J. Wilking, C. Wret, C. W. Walter, S. King, S. Tobayama, K. Nakamura, D. R. Hadley, Y. Nagai, F. Sanchez, Shin Sasaki, M. Yu, P. F. Denner, C. K. Jung, S. Ban, A. Hiramoto, T. Hasegawa, M. Batkiewicz, A. Dabrowska, C. Bronner, S. Dolan, T. Lindner, P. Stowell, Hidekazu Kakuno, S. Mine, C. Densham, A. Cudd, E. Mazzucato, Akitaka Ariga, Ko Okumura, Hiroyuki Sekiya, B. Bourguille, Shigeki Aoki, O. Drapier, M. McCarthy, F. Di Lodovico, M. Tada, D. J. Payne, Masato Shiozawa, Y. Fukuda, K. Sakashita, T. Wachala, S. Bhadra, Xianguo Lu, Takahiro Hiraki, Yu. G. Kudenko, L. Pickering, Kendall Mahn, K. Niewczas, L. H. V. Anthony, L. Zambelli, Yoshikazu Yamada, T. Ishida, D. Sgalaberna, S. M. Oser, M. Lamoureux, S. Manly, D. Hansen, V. Matveev, T. Ishii, P. Hamacher-Baumann, Takaaki Kajita, Y. Seiya, J. T. Haigh, A. Bravar, L. Magaletti, C. Giganti, J. A. Nowak, A. K. Ichikawa, S. Roth, J. Kameda, F. Gizzarelli, A. Minamino, A. Chappell, M. Ikeda, A. Zalewska, B. A. Popov, E. S. Pinzon Guerra, Th. A. Mueller, C. Pistillo, T. Golan, A. Shaikhiev, M. Mezzetto, A. Cervera, E. Reinherz-Aronis, A. Knight, P. Jonsson, L. L. Kormos, Y. Ashida, J. Lagoda, R. J. Wilson, V. Palladino, M. Kabirnezhad, Yuki Fujii, B. Rossi, Y. Nishimura, G. Christodoulou, Y. Nakanishi, T. Maruyama, K. S. McFarland, H. M. O'Keeffe, E. Scantamburlo, M. Tzanov, A. T. Suzuki, C. J. Metelko, J. F. Martin, M. Malek, K. D. Nakamura, A. Knox, S. Bordoni, R. Tacik, J. Dumarchez, J. Schwehr, D. Fukuda, T. Sekiguchi, T. Nakadaira, M. O. Wascko, G. Fiorillo, G.D. Barr, Shota Suzuki, S. Moriyama, L. Ludovici, R.P. Kurjata, J. Holeczek, Kate Scholberg, Alexei Yu. Smirnov, Masayuki Nakahata, K. Nishikawa, F. Hosomi, Thomas B. Campbell, K. Nakayoshi, A. Longhin, M. Hartz, J. L. Palomino, Jan T. Sobczyk, I. Lamont, Yoshihiro Suzuki, M. Ziembicki, A. C. Weber, M. B. Smy, A. Blondel, A. Rychter, D. Brailsford, J. Zalipska, Z. J. Liptak, P. Paudyal, M. A. M. Rayner, C. Francois, Yufeng Wang, J. R. Wilson, S. R. Dennis, E. Kearns, J. P. Lopez, M. Barbi, Alyssa Garcia, T. Inoue, G. A. Fiorentini, C. Nielsen, Jochen Steinmann, R. Tamura, T. Radermacher, P. Martins, D. Shaw, W. H. Toki, Masashi Yokoyama, T. Stewart, M. Posiadala-Zezula, S. L. Cartwright, G. Collazuol, S. Martynenko, Mark Scott, M. Licciardi, W. Uno, T. Feusels, K. Kowalik, N. Chikuma, N. C. Hastings, Yuichi Oyama, P. P. Koller, T. Koga, S. Suvorov, R. P. Litchfield, S. Bolognesi, J. Walker, J. Calcutt, S. V. Cao, Steven C. Johnson, S. Nakayama, A. Mefodiev, A. Konaka, S. Yen, T. Yano, M. Antonova, Koji Yamamoto, O. V. Mineev, Yusuke Koshio, D. Coplowe, E. Radicioni, M. Jiang, Vincenzo Berardi, Tsuyoshi Nakaya, R. Shah, N. Yershov, S. Emery-Schrenk, Leïla Haegel, G. De Rosa, R. A. Owen, P. Novella, M. Pavin, Takashi Kobayashi, K. Zaremba, Alan Cosimo Ruggeri, M. Miura, Atsushi Takeda, D. L. Wark, J. Morrison, T. Tsukamoto, S. Bienstock, A. Pritchard, Hyun-Chul Kim, A. Izmaylov, T. Thakore, G. Vasseur, A. D. Marino, Y. Petrov, C. Wilkinson, M. Buizza Avanzini, T. Ovsyannikova, V. Paolone, C. Barry, Z. Vallari, W. Y. Ma, B. Jamieson, E. D. Zimmerman, R. A. Wendell, T. Lou, M. Lawe, D. Karlen, J. Harada, H. W. Sobel, S. Yamasu, C. Yanagisawa, K. Iwamoto, Gareth J. Barker, Marco Laveder, J. P. Coleman, F. Shaker, A. Ereditato, M. Hogan, H. A. Tanaka, S. Berkman, M. Zito, R. A. Intonti, Yusuke Suda, C. Vilela, K. E. Duffy, E. Rondio, J. Imber, N. McCauley, C. M. Nantais, P. Przewlocki, P. Lasorak, Xiao-yan Li, C. Checchia, A. Zykova, Lester D.R. Thompson, J. Amey, B. Quilain, H. K. Tanaka, M. G. Catanesi, T. Okusawa, Jungsang Kim, A. C. Kaboth, M. R. Vagins, T. Vladisavljevic, Seiko Hirota, M. Gonin, W. Oryszczak, D. Cherdack, K. Abe, C. McGrew, L. Koch, Y. Hayato, C. Andreopoulos, and Alexander Finch

Subjects
Physics, Higher education, 010308 nuclear & particles physics, business.industry, 4. Education, European Regional Development Fund, Library science, 7. Clean energy, 01 natural sciences, Angular distribution, 0103 physical sciences, media_common.cataloged_instance, Christian ministry, Early career, European union, 010306 general physics, business, media_common
Abstract

We thank the J-PARC staff for superb accelerator performance. We thank the CERN NA61/SHINE Collaboration for providing valuable particle production data. We acknowledge the support of MEXT, Japan; NSERC (Grant No. SAPPJ-2014-00031), NRC and CFI, Canada; CEA and CNRS/IN2P3, France; DFG, Germany; INFN, Italy; National Science Centre (NCN) and Ministry of Science and Higher Education, Poland; RSF, RFBR, and Ministry of Education and Science, Russia; MINECO and European Regional Development Fund, Spain; SNSF and SERI, Switzerland; STFC, UK; and DOE, U.S. We also thank CERN for the UA1/NOMAD magnet, DESY for the HERA-B magnet mover system, NII for SINET4, the WestGrid and SciNet consortia in Compute Canada, and GridPP in the United Kingdom. In addition, participation of individual researchers and institutions has been further supported by funds from ERC (FP7), H2020 Grant No. RISE-GA644294-JENNIFER, European Union; JSPS, Japan; Royal Society, United Kingdom; and the Alfred P. Sloan Foundation and the DOE Early Career program, U.S.

Published
2018

6. Measurement of the single π0 production rate in neutral current neutrino interactions on water

Author

E. Larkin, L. Maret, M. J. Wilking, P. N. Ratoff, T. Kutter, P. Stamoulis, Xianguo Lu, M. Friend, Teppei Katori, Z. J. Liptak, E. Kearns, O. V. Mineev, D. Cherdack, A. Blondel, A. Rychter, A. Hiramoto, T. Hasegawa, K. Abe, R. Sacco, André Rubbia, Masashi Yokoyama, J. Holeczek, Thomas B. Campbell, P. Stowell, R. Shah, C. McGrew, F. Di Lodovico, Hidekazu Kakuno, Susumu Takahashi, S. Martynenko, S. Mine, K. Nakayoshi, M. Barbi, Alyssa Garcia, L. Koch, J. R. Wilson, M. Tada, A. K. Ichikawa, D. Kielczewska, M. Batkiewicz, C. Nielsen, Jochen Steinmann, G. De Rosa, R. A. Owen, P. Novella, Y. Hayato, P. Martins, R. L. Helmer, C. Andreopoulos, A. Bravar, N. D. Patel, Yu. G. Kudenko, M. Mezzetto, P. Jonsson, A. Mefodiev, T. Tsukamoto, A. Clifton, A. Dabrowska, S. Roth, J. Kameda, L. L. Kormos, S. Manly, P. Hamilton, Tsuyoshi Nakaya, M. Miura, Hyun-Chul Kim, E. S. Pinzon Guerra, M. Lamoureux, Th. A. Mueller, M. R. Vagins, M. A. M. Rayner, J. Amey, C. W. Walter, T. Stewart, T. Wachala, Antonin Vacheret, T. Yuan, T. Vladisavljevic, A. T. Suzuki, M. Licciardi, M. Antonova, L. Magaletti, C. Giganti, T. Feusels, K. S. McFarland, A. C. Weber, S. Dolan, T. Lindner, A. Himmel, T. Radermacher, A. Shaikhiev, C. Densham, A. Cudd, T. Ishii, M. Tzanov, R. G. Calland, D. Hansen, J. F. Martin, M. Lazos, B. Rossi, T. Koga, J. A. Nowak, E. Iwai, A. Chappell, J. Żmuda, D. Coplowe, F. Gizzarelli, C. J. Metelko, J. Lagoda, K. Kowalik, T. Ishida, D. Autiero, T. Nakadaira, T. Shirahige, S. Bordoni, K. D. Nakamura, Michal Dziewiecki, P. Mijakowski, A. Knight, M. Pavin, K. Gilje, S. V. Cao, S. King, W. R. Kropp, D. Brailsford, N. Chikuma, M. Posiadala-Zezula, N. Grant, G. Collazuol, Mark Scott, W. Warzycha, Seiko Hirota, T. Kikawa, Hiroyuki Sekiya, A. Korzenev, Yusuke Suda, M. Yu, C. Vilela, J. Morrison, R. Ohta, T. Tomura, S. Tobayama, K. Nakamura, Alexander Finch, R. Poutissou, P. Bartet-Friburg, P. P. Koller, A. Pritchard, A. Hillairet, Katsumi Kondo, J. M. Poutissou, C. Bronner, M. Gonin, Vincenzo Berardi, Y. Fukuda, Kendall Mahn, S. Bolognesi, D. R. Hadley, C. K. Jung, S. R. Dennis, Rosario Castillo, Y. Nishimura, C. Touramanis, S. B. Boyd, K. Ieki, M. Jiang, M. Buizza Avanzini, Antonio Ereditato, D. Karlen, W. Oryszczak, M. M. Khabibullin, P. Paudyal, Masato Shiozawa, N. Yershov, Artur F. Izmaylov, Alan Cosimo Ruggeri, S. Ban, B. Jamieson, B. A. Popov, T. Dealtry, A. Redij, K. E. Duffy, J. P. Lopez, C. Riccio, Takaaki Kajita, R. J. Wilkes, J. L. Palomino, R. Tacik, D. Fukuda, F. Sanchez, A. Knox, O. Drapier, A. Missert, M. McCarthy, S. Bienstock, D. Dewhurst, L. Pickering, E. Rondio, S. Bhadra, T. Maruyama, S. L. Cartwright, T. Sekiguchi, L. Ludovici, L. Southwell, J. Myslik, J. Imber, G. Vasseur, C. Pistillo, Kate Scholberg, J. H. Jo, S. Short, Takahiro Hiraki, H. M. O'Keeffe, T. Golan, Jan Kisiel, M. Ikeda, A. Zalewska, N. C. Hastings, M. Sorel, G.D. Barr, N. McCauley, C. M. Nantais, T. Kobayashi, J. T. Haigh, M. Hartz, Yoshihiro Suzuki, M. Yamamoto, Yuki Fujii, C. Yanagisawa, A. P. Furmanski, T. Ovsyannikova, E. Reinherz-Aronis, D. Terhorst, S. Di Luise, L. Cremonesi, C. Barry, S. Murphy, K. G. Nakamura, J. Yoo, V. Paolone, D. Payne, K. Wakamatsu, I. Lamont, J. Dumarchez, J. Schwehr, A. Konaka, Gareth J. Barker, M. Hierholzer, F. Sato, Yuichi Oyama, K. Huang, A. Jacob, I. Karpikov, E. Scantamburlo, Kazuhiro Suzuki, Z. Vallari, W. Y. Ma, R.P. Kurjata, Yusuke Koshio, E. D. Zimmerman, J. P. Coleman, Xiao-yan Li, S. Suvorov, R. P. Litchfield, F. Shaker, F. Hosomi, R. A. Wendell, M. B. Smy, P. Przewlocki, P. Lasorak, C. Checchia, R. Terri, Anatoly Kopylov, Lester D.R. Thompson, T. Okusawa, S. Assylbekov, Jungsang Kim, Koji Yamamoto, M. O. Wascko, S. Y. Suzuki, S. Berkman, M. Zito, R. A. Intonti, Asher Kaboth, Leïla Haegel, Yoshikazu Yamada, H. K. Tanaka, M. G. Catanesi, D. Sgalaberna, M. Nirkko, A. Cervera, V. Palladino, M. Kabirnezhad, Steven C. Johnson, S. Nakayama, S. Yen, T. Yano, V. Galymov, K. Sakashita, S. M. Oser, Y. Seiya, T. Hayashino, S. Emery-Schrenk, K. Zaremba, Atsushi Takeda, E. Mazzucato, T. Thakore, Y. Petrov, C. Wilkinson, A. Longhin, J. Marteau, M. Ziembicki, J. Zalipska, J. Insler, P. Rojas, K. Mavrokoridis, J. D. Perkin, C. Wret, R. Tamura, M. Hogan, Akitaka Ariga, Ko Okumura, M. Ravonel, Y. Ashida, G. Christodoulou, Y. Nakanishi, Kenichi Yoshida, S. Moriyama, Masayuki Nakahata, Y. Uchida, Patrick Dunne, Shigeki Aoki, L. Pickard, A. N. Khotjantsev, P. F. Denner, S. Giffin, V. Matveev, T. J. Irvine, H. A. Tanaka, T. Lou, M. Lawe, J. Harada, H. W. Sobel, K. Iwamoto, B. Quilain, Marco Laveder, A. Minamino, M. Malek, K. Nishikawa, Jan T. Sobczyk, L. Zambelli, Robert Wilson, G. A. Fiorentini, D. Shaw, W. H. Toki, M. Dunkman, E. Radicioni, D. L. Wark, T. Hara, A. D. Marino, and Y. Takeuchi

Subjects
Physics, Particle physics, Neutral current, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Detector, Flux, Interaction energy, 01 natural sciences, 7. Clean energy, Nuclear physics, Cross section (physics), 0103 physical sciences, Mass spectrum, High Energy Physics::Experiment, Neutrino, Nuclear Experiment, 010306 general physics, Nucleon
Abstract

The single π0 production rate in neutral current neutrino interactions on water in a neutrino beam with a peak neutrino energy of 0.6 GeV has been measured using the POD, one of the subdetectors of the T2K near detector. The production rate was measured for data taking periods when the POD contained water (2.64×1020 protons-on-target) and also periods without water (3.49×1020 protons-on-target). A measurement of the neutral current single π0 production rate on water is made using appropriate subtraction of the production rate with water in from the rate with water out of the target region. The subtraction analysis yields 106±41±69 signal events where the uncertainties are statistical (stat.) and systematic (sys.) respectively. This is consistent with the prediction of 157 events from the nominal simulation. The measured to expected ratio is 0.68±0.26(stat)±0.44(sys)±0.12(flux). The nominal simulation uses a flux integrated cross section of 7.63×10−39 cm2 per nucleon with an average neutrino interaction energy of 1.3 GeV.

Published
2018

7. Measurement of ν¯μ and νμ charged current inclusive cross sections and their ratio with the T2K off-axis near detector

Author

T. Stewart, T. Tsukamoto, A. Longhin, C. Yanagisawa, Hyun-Chul Kim, K. Kowalik, N. Chikuma, A. Izmaylov, A. N. Khotjantsev, A. Hiramoto, T. Hasegawa, S. Bolognesi, Gareth J. Barker, C. W. Walter, K. Nishikawa, T. Ishida, V. Paolone, A. K. Ichikawa, M. Pavin, Jan T. Sobczyk, Z. Vallari, R. Tamura, W. Y. Ma, M. Hogan, L. F. Thompson, A. Shaikhiev, A. C. Weber, S. Roth, J. Kameda, K. Sakashita, R. G. Calland, B. Rossi, S. M. Oser, E. D. Zimmerman, R. A. Wendell, E. S. Pinzon Guerra, Th. A. Mueller, A. Bravar, T. Wachala, F. Shaker, Y. Seiya, K. Mavrokoridis, M. Posiadala-Zezula, Hiroyuki Sekiya, S. Bordoni, F. Gizzarelli, Yoshikazu Yamada, A. Knight, G. Collazuol, Mark Scott, M. Antonova, T. Ishii, H. M. O'Keeffe, Y. Fukuda, Kendall Mahn, C. Densham, P. Jonsson, Patrick Dunne, M. M. Khabibullin, P. Stowell, Hidekazu Kakuno, S. Mine, T. Ovsyannikova, D. Karlen, B. A. Popov, Y. Takeuchi, M. Lamoureux, T. Maruyama, Kate Scholberg, M. Hartz, M. O. Wascko, P. F. Denner, D. Hansen, O. Drapier, C. Wret, C. K. Jung, A. Cervera, M. McCarthy, V. Palladino, A. Minamino, C. Barry, M. Kabirnezhad, L. Maret, G.D. Barr, Masato Shiozawa, Vincenzo Berardi, P. N. Ratoff, Y. Nishimura, Alan Cosimo Ruggeri, Y. Ashida, A. Konaka, J. Holeczek, G. Christodoulou, Y. Nakanishi, T. Kutter, A. T. Suzuki, M. A. M. Rayner, M. Malek, M. Ziembicki, E. Radicioni, M. Friend, T. Hayashino, K. Zaremba, J. Lagoda, D. Sgalaberna, L. Pickering, Yusuke Koshio, S. Bhadra, Thomas B. Campbell, Teppei Katori, S. Moriyama, J. Zalipska, J. Insler, S. King, R. J. Wilson, J. F. Martin, S. Bienstock, L. Zambelli, T. Nakadaira, S. B. Boyd, Atsushi Takeda, K. Nakayoshi, D. L. Wark, Masayuki Nakahata, T. Shirahige, G. Vasseur, E. Mazzucato, S. Tobayama, P. P. Koller, M. Mezzetto, H. A. Tanaka, Z. J. Liptak, S. V. Cao, K. Nakamura, Akitaka Ariga, Steven C. Johnson, S. Nakayama, S. Yen, Ko Okumura, D. Coplowe, E. Kearns, T. Thakore, T. Yano, T. Lou, M. Lawe, J. Harada, Shigeki Aoki, H. W. Sobel, D. R. Hadley, Yuichi Oyama, J. R. Wilson, C. Nielsen, Jochen Steinmann, S. Suvorov, R. P. Litchfield, Y. Petrov, C. Wilkinson, Takaaki Kajita, Masashi Yokoyama, R. Tacik, D. Fukuda, S. Martynenko, A. D. Marino, K. Iwamoto, V. Matveev, M. Tzanov, Koji Yamamoto, Xianguo Lu, B. Quilain, S. Emery-Schrenk, Marco Laveder, J. P. Coleman, A. Blondel, A. Rychter, M. Jiang, Antonio Ereditato, N. Yershov, C. J. Metelko, J. L. Palomino, G. A. Fiorentini, K. Abe, Leïla Haegel, K. D. Nakamura, D. Brailsford, F. Sanchez, N. D. Patel, A. Mefodiev, D. Shaw, W. H. Toki, T. Radermacher, T. Koga, Takahiro Hiraki, M. Ikeda, A. Zalewska, Tsuyoshi Nakaya, A. J. Finch, S. R. Dennis, M. Batkiewicz, T. Golan, N. C. Hastings, A. Dabrowska, T. Dealtry, M. Barbi, Alyssa Garcia, Yuki Fujii, A. Missert, M. Licciardi, T. Feusels, J. Dumarchez, J. Schwehr, T. Tomura, J. Morrison, S. Dolan, T. Lindner, A. Pritchard, A. Cudd, P. Paudyal, J. P. Lopez, M. Buizza Avanzini, B. Jamieson, M. J. Wilking, S. L. Cartwright, P. Martins, L. L. Kormos, K. S. McFarland, D. Cherdack, M. Yu, J. M. Poutissou, C. Bronner, O. V. Mineev, E. Rondio, R. Shah, N. McCauley, C. M. Nantais, G. De Rosa, R. A. Owen, P. Novella, K. Huang, C. McGrew, L. Koch, M. Miura, P. Przewlocki, P. Lasorak, Y. Hayato, C. Checchia, C. Andreopoulos, T. Vladisavljevic, H. K. Tanaka, M. G. Catanesi, M. R. Vagins, J. T. Haigh, Seiko Hirota, M. Gonin, W. Oryszczak, A. Knox, A. Hillairet, T. Sekiguchi, S. Ban, L. Ludovici, C. Pistillo, J. Amey, R. A. Intonti, E. Reinherz-Aronis, Yasunari Suzuki, E. Scantamburlo, R.P. Kurjata, S. Berkman, M. Zito, F. Hosomi, I. Lamont, C. Riccio, M. B. Smy, Jan Kisiel, T. Kobayashi, Yusuke Suda, C. Vilela, K. G. Nakamura, F. Di Lodovico, K. E. Duffy, J. Imber, M. Tada, D. J. Payne, Yu. G. Kudenko, Xiao-yan Li, S. Manly, T. Okusawa, Jungsang Kim, S. Y. Suzuki, A. C. Kaboth, L. Magaletti, C. Giganti, J. A. Nowak, E. Iwai, and A. Chappell

Subjects
Physics, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, 7. Clean energy, 01 natural sciences, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, Neutrino, Nuclear Experiment, 010306 general physics, Nucleon, Charged current, Bar (unit)
Abstract

We report a measurement of cross section $\sigma(\nu_{\mu}+{\rm nucleus}\rightarrow\mu^{-}+X)$ and the first measurements of the cross section $\sigma(\bar{\nu}_{\mu}+{\rm nucleus}\rightarrow\mu^{+}+X)$ and their ratio $R(\frac{\sigma(\bar \nu)}{\sigma(\nu)})$ at (anti-)neutrino energies below 1.5 GeV. We determine the single momentum bin cross section measurements, averaged over the T2K $\bar{\nu}/\nu$-flux, for the detector target material (mainly Carbon, Oxygen, Hydrogen and Copper) with phase space restricted laboratory frame kinematics of $\theta_{\mu} $500 MeV/c. The results are $\sigma(\bar{\nu})=\left( 0.900\pm0.029{\rm (stat.)}\pm0.088{\rm (syst.)}\right)\times10^{-39}$ and $\sigma(\nu)=\left( 2.41\ \pm0.022{\rm{(stat.)}}\pm0.231{\rm (syst.)}\ \right)\times10^{-39}$ in units of cm$^{2}$/nucleon and $R\left(\frac{\sigma(\bar{\nu})}{\sigma(\nu)}\right)= 0.373\pm0.012{\rm (stat.)}\pm0.015{\rm (syst.)}$.

Published
2017

8. Updated T2K measurements of muon neutrino and antineutrino disappearance using 1.5×1021 protons on target

Author

S. Martynenko, J. Lagoda, R. J. Wilson, C. K. Jung, A. N. Khotjantsev, M. Ikeda, P. F. Denner, Masato Shiozawa, L. Ludovici, S. Bhadra, T. Maruyama, D. Shaw, W. H. Toki, S. King, K. Zaremba, A. T. Suzuki, J. F. Martin, G.D. Barr, R. Tacik, D. Fukuda, W. R. Kropp, D. Autiero, T. Nakadaira, E. Kearns, S. Tobayama, T. Shirahige, Masashi Yokoyama, H. Kakuno, L. Zambelli, Wilson, T. Feusels, K. Nakamura, Y. Takeuchi, T. Kajita, A. Hiramoto, T. Hasegawa, A. Mefodiev, M. R. Vagins, A. Blondel, A. Rychter, Tsuyoshi Nakaya, K. Nishikawa, L. Maret, J. L. Palomino, P. Novella, Jan T. Sobczyk, M. M. Khabibullin, Atsushi Takeda, Ryuji Tamura, T. Yano, Yoshikazu Yamada, P. N. Ratoff, A. Shaikhiev, T. Kutter, R. G. Calland, F. Sanchez, T. Tomura, M. Friend, K. Mavrokoridis, F. Gizzarelli, Xianguo Lu, Teppei Katori, Giovanni Fiorentini, O. Drapier, C. W. Walter, S. Bordoni, Alessandro Ruggeri, A. Minamino, H.A. Tanaka, S. Berkman, M. Zito, André Rubbia, M. Hartz, E. Radicioni, S. V. Cao, J. D. Perkin, M. McCarthy, T. Thakore, S. B. Boyd, M. Barbi, Alyssa Garcia, Dennis, Takahiro Hiraki, S. Manly, E. Larkin, Todd D. Stewart, R. A. Intonti, J. T. Haigh, M. J. Wilking, D. Karlen, Y. Petrov, C. Wilkinson, Hiroyuki Sekiya, A. Clifton, C. Touramanis, Akitaka Ariga, Ko Okumura, A. Cervera, M. Jiang, Antonio Ereditato, T. Lou, M. Yu, M. Lawe, N. Yershov, R. J. Wilkes, J. Harada, H. W. Sobel, M. Kabirnezhad, Shigeki Aoki, Y. Fukuda, L. Pickard, D. Dewhurst, Z. J. Liptak, A. D. Marino, K. Sakashita, Paolone, Kendall Mahn, L. Southwell, H. K. Tanaka, S. M. Oser, A. Bravar, A. J. Finch, J. Myslik, J. M. Poutissou, C. Bronner, M. G. Catanesi, M. Posiadala-Zezula, Yuichi Oyama, T. Golan, S. Suvorov, R. P. Litchfield, M. Licciardi, E. Rondio, Magdalena Malek, M. Yamamoto, B. Quilain, N. McCauley, Yuki Fujii, C. M. Nantais, P. Jonsson, Gareth J. Barker, Koji Yamamoto, K. Kowalik, Hadley, R. Terri, K. Huang, P. Martins, Asher Kaboth, N. Chikuma, Leïla Haegel, Marco Laveder, A. Konaka, Michal Dziewiecki, Y. Seiya, J. P. Coleman, O. V. Mineev, P. Przewlocki, P. Lasorak, P. P. Koller, David A. Wark, T. Hayashino, M. Batkiewicz, A. Dabrowska, J. Dumarchez, J. Holeczek, J. Schwehr, T. Radermacher, F. Shaker, S. Bolognesi, C. Checchia, R. Shah, M. A. M. Rayner, M. Antonova, Davide Sgalaberna, MB Avanzini, T. Okusawa, D. Hansen, Thomas B. Campbell, K. Nakayoshi, G. De Rosa, R. A. Owen, Yusuke Koshio, Galymov, N. D. Patel, R. L. Helmer, Palladino, S. Dolan, T. Lindner, D. Coplowe, C. Densham, Yusuke Suda, C. Vilela, A. Cudd, E. Mazzucato, T. Dealtry, K. E. Duffy, Esp Guerra, A. Missert, J. Imber, M. Mezzetto, Xiao-yan Li, M. Miura, C. Wret, T. Yuan, A. Korzenev, J. Morrison, M. Ziembicki, A. Pritchard, P. Paudyal, L. L. Kormos, J. P. Lopez, B. Jamieson, J. Zalipska, J. Insler, S. L. Cartwright, K. S. McFarland, Berardi, M. Tzanov, C. J. Metelko, D. Terhorst, D. Brailsford, R. Poutissou, P. Bartet-Friburg, A. Redij, J. Y. Kim, M. Ravonel, S. Bienstock, J. Amey, Y. Ashida, G. Vasseur, G. Christodoulou, Y. Nakanishi, K. Iwamoto, Kenichi Yoshida, C. Nielsen, S. Moriyama, Masayuki Nakahata, Y. Uchida, A. Longhin, T. Koga, Z. Vallari, W. Y. Ma, H. J. Kim, L. F. Thompson, C. Riccio, E. D. Zimmerman, M. Pavin, M. Hogan, Jan Kisiel, T. Kobayashi, Sy Suzuki, A. C. Weber, Steven C. Johnson, S. Nakayama, R. A. Wendell, S. Yen, G. Collazuol, Mark Scott, B. A. Popov, S. Emery-Schrenk, Kate Scholberg, Matveev, A. K. Ichikawa, P. Stowell, S. Mine, S. Roth, J. Kameda, Th. A. Mueller, P. Mijakowski, A. Knight, M. Lamoureux, H. M. O'Keeffe, S. Short, M. O. Wascko, T. Tsukamoto, J. Zmuda, C. Pistillo, Y. Nishimura, L. Pickering, J. Steinmann, T. Ishida, M. Nirkko, E. Reinherz-Aronis, T. Ovsyannikova, C. Barry, C. Yanagisawa, Yoshihiro Suzuki, B. Rossi, T. Vladisavljevic, E. Scantamburlo, R.P. Kurjata, T. Wachala, T. Ishii, Seiko Hirota, M. Gonin, F. Hosomi, M. B. Smy, W. Oryszczak, D. Cherdack, K. Abe, A. Zalewska, C. McGrew, L. Koch, Y. Hayato, C. Andreopoulos, A. Hillairet, Artur F. Izmaylov, S. Ban, A. Knox, F. Di Lodovico, T. Sekiguchi, M. Tada, D. J. Payne, M. Sorel, Yu. G. Kudenko, N. C. Hastings, Keigo Nakamura, I. Lamont, L. Magaletti, C. Giganti, J. A. Nowak, E. Iwai, A. Chappell, and Patrick Dunne

Subjects
Physics, Nuclear physics, Particle physics, Muon, 010308 nuclear & particles physics, 0103 physical sciences, T2K experiment, Muon neutrino, Neutrino, 010306 general physics, Neutrino oscillation, 7. Clean energy, 01 natural sciences
Abstract

We report measurements by the T2K experiment of the parameters $\theta_{23}$ and $\Delta m^{2}_{32}$ governing the disappearance of muon neutrinos and antineutrinos in the three flavor neutrino oscillation model. Utilizing the ability of the experiment to run with either a mainly neutrino or a mainly antineutrino beam, the parameters are measured separately for neutrinos and antineutrinos. Using $7.482 \times 10^{20}$ POT in neutrino running mode and $7.471 \times 10^{20}$ POT in antineutrino mode, T2K obtained, $\sin^{2}(\theta_{23})=0.51^{+0.08}_{-0.07}$ and $\Delta m^{2}_{32} = 2.53^{+0.15}_{-0.13} \times 10^{-3}$eV$^{2}$/c$^{4}$ for neutrinos, and $\sin^{2}({\overline{\theta}}_{23})=0.42^{+0.25}_{-0.07}$ and ${\Delta\overline{m}^2}_{32} = 2.55^{+0.33}_{-0.27} \times 10^{-3}$eV$^{2}$/c$^{4}$ for antineutrinos (assuming normal mass ordering). No significant differences between the values of the parameters describing the disappearance of muon neutrinos and antineutrinos were observed.

Published
2017

9. Search for nucleon decay into charged antilepton plus meson in 0.316 megaton·years exposure of the Super-Kamiokande water Cherenkov detector

Author

A. T. Suzuki, Atsushi Takeda, J. F. Martin, N. D. Patel, Yusuke Suda, C. Vilela, T. Nakadaira, C. Xu, Makoto Sakuda, K. Ito, H. W. Sobel, Y. Takeuchi, T. Kajita, B. Quilain, M. B. Smy, Y. Sonoda, M. Elnimr, K. Sakashita, A. Konaka, Francesco Muto, Xiao-yan Li, T. Hasegawa, A. Cole, J. L. Stone, Y. Okajima, Yusuke Koshio, Ll. Marti, H. K. Tanaka, Kimihiro Okumura, M. Goldhaber, A. Pritchard, Yoshitaka Itow, J. L. Raaf, M. Miura, J. L. Palomino, R. A. Wendell, K. Choi, Pablo Fernandez, L. R. Sulak, C. Kachulis, J. Amey, T. Hayashino, H.A. Tanaka, G. Pronost, M. Friend, S. Cao, N. McCauley, C. M. Nantais, K. Huang, Z. Li, Song Chen, Makoto Hasegawa, C. W. Walter, Shintaro Ito, A. Kibayashi, C Shimpson, C. Bronner, Shigeki Tasaka, Lester D.R. Thompson, S. Tobayama, J. G. Learned, D. L. Wark, Takahiro Hiraki, M. Koshiba, S. N. Smith, Y. M. Zhang, J. S. Jang, R. G. Park, T. Tomura, K. S. Ganezer, S. Nakayama, Hiroyuki Sekiya, H. Nagata, A. Takenaka, F. d. M. Blaszczyk, H. Okazawa, M. J. Wilking, Soo-Bong Kim, Y. Fukuda, I. T. Lim, Takhistov, Yuichi Oyama, L. Wan, L. Labarga, M. Jiang, T. Nakamura, R. P. Litchfield, Ke. Abe, Takashi Kobayashi, T. Tsukamoto, C. Yanagisawa, S. Berkman, P. Weatherly, J. Kameda, A. Minamino, K. Abe, Yuji Kishimoto, S. Matsuno, Lhv Anthony, T. Ishida, P. Mijakowski, Kalen Martens, T. Yano, B. Richards, R. Akutsu, Ke. Nakamura, M. O. Wascko, R. Tacik, D. Fukuda, K. Kaneyuki, Yuuki Nakano, Y. Nishimura, Yoshihiro Suzuki, Y. Totsuka, Jy Kim, A. Himmel, R. G. Calland, K. Nishijima, T. Sekiguchi, Erin O'Sullivan, F. Di Lodovico, Y. Kuno, Yuta Kato, C. K. Jung, T. Ishii, M. Ikeda, Masato Shiozawa, Y. Choi, Y. Hayato, S. Locke, J. C. Hill, E. Kearns, Seiko Hirota, Masashi Yokoyama, T. Ishizuka, Tsuyoshi Nakaya, M. Hartz, K. Iyogi, W. Y. Ma, R. J. Wilkes, Hirokazu Ishino, Vagins, S. Mine, K. M. Tsui, J. Gustafson, Kate Scholberg, W. R. Kropp, K. Nakamura, K. Frankiewicz, A. Orii, S. Moriyama, G. Santucci, Masayuki Nakahata, Y. Uchida, and M. Murase

Subjects
Physics, Particle physics, Proton, Meson, 010308 nuclear & particles physics, Cherenkov detector, Nuclear Theory, 01 natural sciences, law.invention, Nuclear physics, Pion, law, 0103 physical sciences, High Energy Physics::Experiment, Neutron, Nuclear Experiment, 010306 general physics, Nucleon, Super-Kamiokande, Lepton
Abstract

We have searched for proton decays into a charged antilepton (e+, μ+) plus a meson (η, ρ0, ω) and for neutron decays into a charged antilepton (e+, μ+) plus a meson (π−, ρ−) using Super-Kamiokande I-IV data, corresponding to 0.316 megaton⋅years of exposure. This measurement updates the previous published result by using 2.26 times more data and improved analysis methods. No significant evidence for nucleon decay is observed and lower limits on the partial lifetime of the nucleon are obtained. The limits range from 3×1031 to 1×1034 years at 90% confidence level, depending on the decay mode.

Published
2017

10. Search for proton decay via p→e+π0 and p→μ+π0 in 0.31 megaton·years exposure of the Super-Kamiokande water Cherenkov detector

Author

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

Subjects
Physics, Particle physics, Proton, 010308 nuclear & particles physics, Cherenkov detector, Proton decay, Hydrogen atom, Expected value, 7. Clean energy, 01 natural sciences, law.invention, Nuclear physics, 13. Climate action, law, 0103 physical sciences, Neutron, Neutrino, 010306 general physics, Super-Kamiokande
Abstract

We have searched for proton decay via p→e+π0 and p→μ+π0 using Super-Kamiokande data from April 1996 to March 2015, 0.306 megaton·years exposure in total. The atmospheric neutrino background rate in Super-Kamiokande IV is reduced to almost half that of phase I-III by tagging neutrons associated with neutrino interactions. The reach of the proton lifetime is further enhanced by introducing new signal criteria that select the decay of a proton in a hydrogen atom. No candidates were seen in the p→e+π0 search. Two candidates that passed all of the selection criteria for p→μ+π0 have been observed, but these are consistent with the expected number of background events of 0.87. Lower limits on the proton lifetime are set at τ/B(p→e+π0)>1.6×1034 years and τ/B(p→μ+π0)>7.7×1033 years at 90% confidence level.

Published
2017

11. Search for proton decay via p → e + π 0 and p →

Author

K. Abe, Y. Haga, Y. Hayato, M. Ikeda, K. Iyogi, J. Kameda, Y. Kishimoto, M. Miura, S. Moriyama, M. Nakahata, T. Nakajima, Y. Nakano, S. Nakayama, A. Orii, H. Sekiya, M. Shiozawa, A. Takeda, H. Tanaka, T. Tomura, R. A. Wendell, R. Akutsu, T. Irvine, T. Kajita, K. Kaneyuki, Y. Nishimura, E. Richard, K. Okumura, L. Labarga, P. Fernandez, J. Gustafson, C. Kachulis, E. Kearns, J. L. Raaf, J. L. S

Published
2017
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12. Measurement of double-differential muon neutrino charged-current interactions onC8H8without pions in the final state using the T2K off-axis beam

Author

M. Barbi, Alyssa Garcia, J. Marteau, Vincenzo Berardi, Xianguo Lu, André Rubbia, M. Ziembicki, L. Southwell, M. Pavin, M. Hogan, G. Vasseur, Akitaka Ariga, J. Myslik, Ko Okumura, S. Manly, J. Zalipska, J. Insler, Per Jönsson, Davide Sgalaberna, T. Okusawa, S. Y. Suzuki, K. Iwamoto, M. R. Vagins, M. Mezzetto, A. Clifton, S. V. Cao, Michal Dziewiecki, Alexander Finch, Shigeki Aoki, L. Pickard, S. Giffin, C. Riccio, Yusuke Suda, K. E. Duffy, Antonin Vacheret, M. Yamamoto, P. M. Hamilton, S. Martynenko, J. Lagoda, J. Imber, M. A. M. Rayner, Xiao-yan Li, V. Matveev, R. J. Wilson, Jan Kisiel, M. Tzanov, C. Nielsen, Yuki Fujii, N. Chikuma, A. T. Suzuki, A. P. Furmanski, Susumu Takahashi, H. Kakuno, F. Di Lodovico, L. Zambelli, M. Tada, M. Ravonel, A. N. Khotjantsev, Giovanni Fiorentini, A. Knox, J. F. Martin, H.A. Tanaka, S. R. Dennis, A. Bravar, K. Zaremba, T. Kobayashi, S. Di Luise, L. Cremonesi, S. Berkman, M. Zito, C. Touramanis, M. Jiang, Antonio Ereditato, T. Sekiguchi, J. Dumarchez, J. Schwehr, T. Feusels, R. A. Intonti, T. Tomura, T. Dealtry, D. Autiero, T. Nakadaira, A. Missert, C. W. Walter, N. Yershov, T. Shirahige, M. Buizza Avanzini, D. Brailsford, R. Poutissou, A. Himmel, R. Tacik, D. Fukuda, S. King, Yu. G. Kudenko, N. C. Hastings, M. M. Khabibullin, M. Yu, G. Christodoulou, K. Nakamura, Kenichi Yoshida, M. Sorel, A. Shaikhiev, R. G. Calland, K. Nishikawa, P. Bartet-Friburg, Jan T. Sobczyk, Atsushi Takeda, J. M. Poutissou, C. Bronner, P. Rojas, M. Lazos, T. Hasegawa, E. Rondio, N. McCauley, C. M. Nantais, L. Magaletti, C. Giganti, M. McCarthy, P. Stamoulis, S. Moriyama, Masayuki Nakahata, Y. Uchida, E. Radicioni, W. R. Kropp, W. Warzycha, S. Tobayama, L. L. Kormos, K. Huang, J. A. Nowak, E. Iwai, D. R. Hadley, C. Pistillo, S. B. Boyd, A. Zalewska, D. Payne, T. Tsukamoto, O. V. Mineev, R. Shah, P. Przewlocki, P. Lasorak, Hiroyuki Sekiya, T. Thakore, K. Mavrokoridis, Anatoly Kopylov, Lester D.R. Thompson, J. D. Perkin, G. De Rosa, R. A. Owen, E. Reinherz-Aronis, F. Gizzarelli, J. Caravaca Rodríguez, E. Scantamburlo, J. L. Palomino, R.P. Kurjata, K. S. McFarland, S. Horikawa, B. A. Popov, Keigo Nakamura, M. D. Haigh, I. Lamont, Y. Seiya, T. Wachala, F. Sanchez, A. Minamino, A. Redij, J. Y. Kim, Y. Fukuda, Kendall Mahn, T. Ishii, Gareth J. Barker, M. Miura, F. Hosomi, T. Maruyama, T. Koga, P. F. Denner, Katsumi Kondo, D. Shaw, W. H. Toki, T. Yuan, J. H. Jo, M. B. Smy, Y. Petrov, C. Wilkinson, G.D. Barr, A. Blondel, J. Żmuda, J. Steinmann, Z. J. Liptak, K. Sakashita, Y. Takeuchi, A. Rychter, J. P. Coleman, J. P. Lopez, S. A. Dytman, T. Ishida, S. M. Oser, E. Kearns, M. Malek, S. Bolognesi, F. Shaker, M. Hartz, H. K. Tanaka, K. Wakamatsu, M. G. Catanesi, I. Karpikov, D. Cherdack, M. Posiadala-Zezula, D. Hansen, M. Antonova, R. Ohta, S. Bordoni, Masashi Yokoyama, A. Hillairet, S. L. Cartwright, R. Castillo, D. Kielczewska, M. Batkiewicz, K. Abe, T. Kajita, A. Dabrowska, P. Martins, Y. Nishimura, K. Ieki, D. Karlen, R. Sacco, C. McGrew, Artur F. Izmaylov, V. Paolone, L. Koch, Kate Scholberg, A. Jacob, R. J. Wilkes, N. D. Patel, A. Mefodiev, Z. Vallari, W. Y. Ma, L. Pickering, Y. Hayato, H. J. Kim, C. Andreopoulos, T. J. Irvine, D. Terhorst, Tsuyoshi Nakaya, S. Short, E. D. Zimmerman, D. Dewhurst, S. Dolan, T. Lindner, C. K. Jung, C. Densham, A. Konaka, T. Ovsyannikova, S. Murphy, M. Ikeda, Masato Shiozawa, L. Ludovici, Yoshihiro Suzuki, Yusuke Koshio, S. Mine, S. Bhadra, M. Hierholzer, Stefan Schoppmann, E. Larkin, V. Palladino, Todd D. Stewart, M. J. Wilking, A. C. Weber, N. Grant, D. L. Wark, G. Collazuol, Mark Scott, P. N. Ratoff, T. Kutter, M. Friend, Teppei Katori, Seiko Hirota, T. Kikawa, M. Gonin, M. Lawe, T. Hara, A. D. Marino, W. Oryszczak, B. Quilain, Marco Laveder, Takahiro Hiraki, James R. Wilson, F. Sato, R. Terri, Yuichi Oyama, A. Korzenev, S. Suvorov, R. P. Litchfield, B. Jamieson, J. Holeczek, K. Nakayoshi, S. Assylbekov, R. L. Helmer, Koji Yamamoto, Asher Kaboth, Leïla Haegel, T. Yano, Yoshikazu Yamada, O. Drapier, A. Cervera, M. Kabirnezhad, V. Galymov, T. Hayashino, E. Mazzucato, M. Nirkko, C. Yanagisawa, A. K. Ichikawa, S. Roth, J. Kameda, E. S. Pinzon Guerra, Th. A. Mueller, P. Mijakowski, A. Knight, H. M. O'Keeffe, Kazuhiro Suzuki, M. O. Wascko, Steven C. Johnson, S. Nakayama, R. A. Wendell, S. Yen, S. Emery-Schrenk, and A. Longhin

Subjects
Physics, Particle physics, Muon, 010308 nuclear & particles physics, Monte Carlo method, 01 natural sciences, 7. Clean energy, Nuclear physics, Cross section (physics), Pion, Phase space, 0103 physical sciences, High Energy Physics::Experiment, Muon neutrino, Nuclear Experiment, 010306 general physics, Beam (structure), Charged current
Abstract

We report the measurement of muon neutrino charged-current interactions on carbon without pions in the final state at the T2K beam energy using 5.734×1020 protons on target. For the first time the measurement is reported as a flux-integrated, double-differential cross section in muon kinematic variables (cosθμ, pμ), without correcting for events where a pion is produced and then absorbed by final state interactions. Two analyses are performed with different selections, background evaluations and cross-section extraction methods to demonstrate the robustness of the results against biases due to model-dependent assumptions. The measurements compare favorably with recent models which include nucleon-nucleon correlations but, given the present precision, the measurement does not distinguish among the available models. The data also agree with Monte Carlo simulations which use effective parameters that are tuned to external data to describe the nuclear effects. The total cross section in the full phase space is σ=(0.417±0.047(syst)±0.005(stat))×10-38 cm2 nucleon-1 and the cross section integrated in the region of phase space with largest efficiency and best signal-over-background ratio (cosθμ>0.6 and pμ>200 MeV) is σ=(0.202±0.036(syst)±0.003(stat))×10-38 cm2 nucleon-1.

Published
2016

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

Author

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

Subjects
Physics, Particle physics, Physics - Instrumentation and Detectors, Muon, 010308 nuclear & particles physics, Chlorine-36, Order (ring theory), 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Phenomenology, 13. Climate action, 0103 physical sciences, Neutron, Production (computer science), Neutrino, Astrophysics - High Energy Astrophysical Phenomena, 010306 general physics, Super-Kamiokande, Energy (signal processing)
Abstract

Cosmic-ray-muon spallation-induced radioactive isotopes with $\beta$ decays are one of the major backgrounds for solar, reactor, and supernova relic neutrino experiments. Unlike in scintillator, production yields for cosmogenic backgrounds in water have not been exclusively measured before, yet they are becoming more and more important in next generation neutrino experiments designed to search for rare signals. We have analyzed the low-energy trigger data collected at Super-Kamiokande-IV in order to determine the production rates of $^{12}$B, $^{12}$N, $^{16}$N, $^{11}$Be, $^9$Li, $^8$He, $^9$C, $^8$Li, $^8$B and $^{15}$C. These rates were extracted from fits to time differences between parent muons and subsequent daughter $\beta$'s by fixing the known isotope lifetimes. Since $^9$Li can fake an inverse-beta-decay reaction chain via a $\beta + n$ cascade decay, producing an irreducible background with detected energy up to a dozen MeV, a dedicated study is needed for evaluating its impact on future measurements; the application of a neutron tagging technique using correlated triggers was found to improve this $^9$Li measurement. The measured yields were generally found to be comparable with theoretical calculations, except the cases of the isotopes $^8$Li/$^8$B and $^9$Li., Comment: 12 pages, 6 figures, accepted by PRD for publication

Published
2016

14. Measurement of theνμcharged-current quasielastic cross section on carbon with the ND280 detector at T2K

Author

Hidekazu Kakuno, S. Mine, B. A. Popov, Kate Scholberg, M. Hartz, Hidetoshi Kubo, A. C. Weber, S. King, M. Posiadala-Zezula, N. Grant, G. Collazuol, Mark Scott, C. Pistillo, Susumu Takahashi, C. A. Miller, W. R. Kropp, A. K. Ichikawa, W. Warzycha, S. Roth, J. Kameda, S. Tobayama, S. Martynenko, R. Ohta, P. Stamoulis, T. Maruyama, K. Nakamura, D. Ruterbories, R. A. Intonti, B. Smith, M. A.M. Rayner, E. Reinherz-Aronis, T. Wongjirad, E. Radicioni, C. Densham, Takahiro Hiraki, J. Lagoda, E. S. Pinzon Guerra, Th. A. Mueller, Matthew T. Reeves, P. Mijakowski, J. H. Jo, D. R. Hadley, A. Minamino, M. Ravonel, O. V. Mineev, Seiko Hirota, T. Kikawa, M. Gonin, C. Bojechko, R. J. Wilson, T. Tomura, D. L. Wark, F. Sato, R. Castillo, Yuichi Oyama, L. Escudero, R. Shah, E. Scantamburlo, E. Rondio, B. E. Berger, S. Horikawa, T. Wachala, N. McCauley, G. De Rosa, H. M. O'Keeffe, Kazuhiro Suzuki, W. Oryszczak, C. Nantais, R. A. Owen, G.D. Barr, M. Barbi, Alyssa Garcia, R. Terri, K. Huang, P. Kitching, F. Sanchez, R. P. Litchfield, C. W. Walter, M. O. Wascko, Masashi Tanaka, R.P. Kurjata, A. P. Furmanski, Yusuke Suda, M. Miura, P. Przewlocki, F. Hosomi, T. Sekiguchi, L. Ludovici, M. Mezzetto, G. Christodoulou, D. Kielczewska, M. Batkiewicz, T. Yuan, M. Malek, M. Sorel, M. M. Khabibullin, S. Short, T. Hara, I. Z. Danko, A. Dabrowska, S. Assylbekov, Koji Yamamoto, T. Ishii, A. D. Marino, M. B. Smy, J. Caravaca Rodríguez, H.A. Tanaka, Anatoly Kopylov, K. Wakamatsu, R. Tacik, M. Nirkko, O. Perevozchikov, N. C. Hastings, M. Ieva, Yasunari Suzuki, P. Plonski, A. Blondel, V. Paolone, A. Jacob, F. Bay, B. Quilain, S. A. Dytman, S. Manly, L. Zambelli, M. D. Haigh, I. Lamont, J. P. Lopez, K. Abe, Z. Vallari, M. Yu, I. Karpikov, T. Tsukamoto, J. Adam, M. Murdoch, K. E. Duffy, A. Rychter, J. M. Poutissou, C. Bronner, S. Dolan, T. Lindner, D. Cherdack, S. Nakayama, S. Moriyama, S. Yen, T. Yano, R. Sacco, K. Nishikawa, C. McGrew, T. Feusels, K. Iyogi, W. Y. Ma, L. F. Thompson, E. D. Zimmerman, E. Larkin, L. Koch, Leïla Haegel, P. de Perio, M. J. Wilking, Yoshikazu Yamada, Y. Hayato, André Rubbia, C. Andreopoulos, Ken Sakashita, H. K. Tanaka, A. Hillairet, M. G. Catanesi, P. Rojas, S. Emery-Schrenk, Masayuki Nakahata, B. Still, Michal Dziewiecki, Jan T. Sobczyk, Y. Nishimura, J. Żmuda, J. Imber, M. R. Vagins, S. R. Dennis, A. Bravar, T. Ishida, Y. Uchida, S. L. Cartwright, S. J. Coleman, S. R. Johnson, O. Drapier, J. Steinmann, Artur F. Izmaylov, K. Connolly, A. Longhin, A. Thorley, A. Korzenev, A. Clifton, P. Jonsson, A. Kolaceke, Takaaki Kajita, J. Marteau, Z. Williamson, A. Murakami, T. Ovsyannikova, Yu. Kudenko, D. Terhorst, P. A. Rodrigues, F. Di Lodovico, C. Riccio, Y. Shustrov, C. Touramanis, M. McCarthy, A. J. Finch, Antonin Vacheret, R. A. Wendell, S. Murphy, T. J. Irvine, M. Jiang, Antonio Ereditato, N. Yershov, M. Tada, D. J. Payne, K. Iwamoto, Jan Kisiel, A. Zalewska, Vincenzo Berardi, P. Sinclair, Rhiju Das, D. Goeldi, Hiroyuki Sekiya, B. Jamieson, T. Kobayashi, S. Di Luise, L. Cremonesi, Akitaka Ariga, Ko Okumura, Kevin Scott McFarland, Joshua Hignight, K. G. Nakamura, P. Hamilton, M. Tzanov, J. Holeczek, S. B. Boyd, K. Nakayoshi, T. Akiri, Shigeki Aoki, L. Pickard, C. J. Metelko, G. Vasseur, Y. Fukuda, Kendall Mahn, A. Cervera, T. Hasegawa, V. Palladino, M. Kabirnezhad, L. Magaletti, C. Giganti, S. Giffin, R. L. Helmer, L. Southwell, M. Lawe, J. Myslik, K. D. Nakamura, V. Matveev, H. W. Sobel, Y. Takeuchi, J. A. Nowak, E. Iwai, G. A. Fiorentini, V. Galymov, C. Hearty, T. Hayashino, J. R. Wilson, C. Nielsen, T. Golan, A. Kilinski, D. Shaw, M. Ziembicki, W. H. Toki, Marco Laveder, J. P. Coleman, J. Zalipska, J. Insler, Yuki Fujii, C. Lister, T. Koga, E. Mazzucato, J. Dumarchez, J. Schwehr, Hiroaki Aihara, P. N. Ratoff, T. Kutter, C. K. Jung, Scott Davis, D. Hansen, T. Okusawa, Jungsang Kim, M. Friend, T. Stewart, S. Y. Suzuki, Teppei Katori, A. Konaka, Masato Shiozawa, M. Bass, A. C. Kaboth, Yusuke Koshio, S. Berkman, M. Zito, D. Brailsford, R. Poutissou, A. Haesler, M. Ikeda, P. Bartet-Friburg, K. Mavrokoridis, F. d. M. Blaszczyk, Y. Kanazawa, J. D. Perkin, N. Chikuma, S. Bhadra, A. Redij, A. N. Khotjantsev, L. Pickering, Stefan Schoppmann, S. Bolognesi, C. Yanagisawa, E. Kearns, Masashi Yokoyama, J. Yoo, S. M. Oser, E. Poplawska, Gareth J. Barker, M. Hierholzer, Y. Seiya, A. Mefodiev, F. Shaker, Tsuyoshi Nakaya, K. Zaremba, Atsushi Takeda, A. Himmel, A. Shaikhiev, R. G. Calland, D. Gudin, M. Lazos, Kentaroh Yoshida, T. Duboyski, Y. Petrov, A. T. Suzuki, S. Bordoni, J. F. Martin, D. Autiero, T. Nakadaira, T. Shirahige, K. Ieki, D. Karlen, R. J. Wilkes, D. Dewhurst, C. Wilkinson, D. Sgalaberna, P. Martins, J. L. Palomino, L. L. Kormos, K. Gilje, T. Dealtry, and A. Missert

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, 0103 physical sciences, Library science, DESY, Early career, 010306 general physics, 7. Clean energy, 01 natural sciences, Neutrino scattering
Abstract

We thank the J-PARC staff for superb accelerator performance and the CERN NA61 Collaboration for providing valuable particle production data. We acknowledge the support of MEXT, Japan; NSERC, NRC, and CFI, Canada; CEA and CNRS/IN2P3, France; DFG, Germany; INFN, Italy; National Science Centre (NCN), Poland; RSF, RFBR, and MES, Russia; MINECO and ERDF funds, Spain; SNSF and SER, Switzerland; STFC, UK; and DOE, USA. We also thank CERN for the UA1/NOMAD magnet, DESY for the HERA-B magnet mover system, NII for SINET4, the WestGrid and SciNet consortia in Compute Canada, GridPP, UK. In addition participation of individual researchers and institutions has been further supported by funds from ERC (FP7), EU; JSPS, Japan; Royal Society, UK; DOE Early Career program, USA.

Published
2015

15. Test of Lorentz invariance with atmospheric neutrinos

Author

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

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Lorentz transformation, High Energy Physics::Phenomenology, Isotropy, FOS: Physical sciences, Física, Lorentz covariance, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), symbols.namesake, Orders of magnitude (time), Standard-Model Extension, 0103 physical sciences, Range (statistics), symbols, High Energy Physics::Experiment, Neutrino, 010306 general physics, Neutrino oscillation
Abstract

Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiere, y los autores pertenecientes a la UAM, A search for neutrino oscillations induced by Lorentz violation has been performed using 4,438 live-days of Super-Kamiokande atmospheric neutrino data. The Lorentz violation is included in addition to standard three-flavor oscillations using the nonperturbative standard model extension (SME), allowing the use of the full range of neutrino path lengths, ranging from 15 to 12,800 km, and energies ranging from 100 MeV to more than 100 TeV in the search. No evidence of Lorentz violation was observed, so limits are set on the renormalizable isotropic SME coefficients in the eμ, μτ, and eτ sectors, improving the existing limits by up to 7 orders of magnitude and setting limits for the first time in the neutrino μτ sector of the SME, We would like to thank A. Kostelecky for his advice and support and we are grateful to J. S. Diaz for working closely with us to calculate and implement the Lorentz-violating oscillation probabilities. The authors gratefully acknowledge the cooperation of the Kamioka Mining and Smelting Company. Super-K has been built and operated from funds provided by the Japanese Ministry of Education, Culture, Sports, Science and Technology, the U.S. Department of Energy, and the U.S. National Science Foundation. This work was partially supported by the Research Foundation of Korea (BK21 and KNRC), the Korean Ministry of Science and Technology, the National Science Foundation of China, the European Union FP7 (DS laguna-lbno PN- 284518 and ITN invisibles GA-2011-289442), the National Science and Engineering Research Council (NSERC) of Canada, and the Scinet and Westgrid consortia of Compute Canada

Published
2015

16. Search for proton decay viap→νK+using260 kiloton·yeardata of Super-Kamiokande

Author

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

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Proton, Proton decay, Super-Kamiokande, Lower limit
Abstract

We have searched for proton decay via p→νK+ using Super-Kamiokande data from April 1996 to February 2013, 260 kiloton•year exposure in total. No evidence for this proton decay mode is found. A lower limit of the proton lifetime is set to τ/B(p→νK+)>5.9×1033 years at 90% confidence level.

Published
2014

17. Publisher’s Note: T2K neutrino flux prediction [Phys. Rev. D87, 012001 (2013)]

Author

C. Bojechko, R. J. Wilson, R. Ohta, D. Ruterbories, M. Ieva, A. Himmel, R. Tacik, R. G. Calland, D. Gudin, C. Hearty, V. Galymov, A. Konaka, S. Short, W. H. Toki, A. K. Ichikawa, J. P. A. M. de André, P. Plonski, S. Roth, J. Kameda, E. S. Pinzon Guerra, Th. A. Mueller, Matthew T. Reeves, P. Mijakowski, T. Sekiguchi, J. Åmuda, B. E. Berger, D. Naples, P. Guzowski, K. Nishikawa, A. Hillairet, H. M. O'Keeffe, Kazuhiro Suzuki, C. W. Walter, E. Kearns, Masashi Yokoyama, E. Poplawska, M. Dziomba, H. Kakuno, L. Zambelli, Jan T. Sobczyk, K. Laihem, J. Caravaca Rodríguez, H.A. Tanaka, M. Ziembicki, J. Insler, E. Mazzucato, G. F. Pearce, K. Sakashita, S. M. Oser, M. Sorel, A. T. Suzuki, T. Tomura, P. Kitching, M. O. Wascko, M. Posiadala, M. G. Catanesi, Artur F. Izmaylov, M. Zito, K. Koseki, S. Mine, F. d. M. Blaszczyk, M. Murdoch, Y. Kanazawa, J. D. Perkin, Tsuyoshi Nakaya, J. M. Poutissou, C. Bronner, J. F. Martin, D. Autiero, S. Nakayama, R. A. Wendell, S. Yen, P. de Perio, T. Yano, Yoshikazu Yamada, B. Kirby, M. M. Tanaka, T. Nakadaira, S. Emery, F. Di Lodovico, M. Tada, I. Kreslo, D. J. Payne, K. Kowalik, Richard J.H. Smith, Koji Nakamura, André Rubbia, M. D. Haigh, Vincenzo Berardi, Tomoko Ariga, A. N. Khotjantsev, Akitaka Ariga, Ko Okumura, M. Y. Pac, Y. Seiya, E. L. Mathie, Yu. G. Kudenko, N. C. Hastings, Jan Kisiel, L. Monfregola, S. Manly, A. Cervera, Shigeki Aoki, Hiroyuki Sekiya, T. Akiri, T. Hasegawa, M. Ravonel, F. Bay, A. Clifton, S. Kumaratunga, T. Szeglowski, Hidetoshi Kubo, S. Giffin, Y. Fukuda, G. Vasseur, Ian Taylor, D. Cherdack, K. Nakajima, A. J. Finch, Kendall Mahn, P. Jonsson, L. Magaletti, C. Giganti, S. B. Boyd, M. M. Khabibullin, R. Sacco, Ke. Abe, E.D. Frank, R. A. Johnson, V. Matveev, T. Tsukamoto, G. Christodoulou, C. McGrew, M. J. Wilking, T. Ishida, O. Perevozchikov, Y. Hayato, C. Andreopoulos, P. Sinclair, B. Still, S. Moriyama, T. McLachlan, S. Murphy, T. Nakai, K. Mavrokoridis, D. R. Hadley, Masayuki Nakahata, B. Rossi, Masashi Tanaka, Jing Wang, E. Reinherz-Aronis, V. Paolone, Y. Uchida, M. Szeptycka, F. Retiere, V. Palladino, K. P. Lee, M. Day, A. Longhin, J. Marteau, C. Yanagisawa, Z. Williamson, E. Rondio, Michal Dziewiecki, Kazuhiro Yamamoto, E. Scantamburlo, K. Iyogi, L. Southwell, J. Myslik, Y. Takeuchi, R.P. Kurjata, S. W. Bentham, N. McCauley, T. Kajita, Minoru Otani, T. Kikawa, M. Gonin, L. Escudero, M. Lawe, E. D. Zimmerman, I. Z. Danko, T. Golan, M. B. Smy, H. W. Sobel, W. Oryszczak, S. A. Dytman, Koh Ueno, B. A. Popov, A. Curioni, Hiroaki Aihara, P. N. Ratoff, R. Terri, T. Kutter, K. Huang, C. Licciardi, R. Castillo, Yuichi Oyama, R. P. Litchfield, M. Friend, Yuki Fujii, Magdalena Malek, S. Di Luise, S. Assylbekov, B. Quilain, P. Stamoulis, E. Radicioni, S. J. Coleman, Marco Laveder, D. L. Wark, Kate Scholberg, P. Przewlocki, J. Steinmann, C. Touramanis, O. V. Mineev, A. Gaudin, Antonio Ereditato, N. Yershov, T. Hara, A. D. Marino, A. Blondel, J. Dumarchez, A. C. Weber, C. Nielsen, G. Kogan, Takashi Kobayashi, M. Barbi, J. Schwehr, G. De Rosa, M. Messina, Y. Nishimura, H. Kaji, Lester D.R. Thompson, R. A. Owen, C. A. Miller, A. Minamino, N. Grant, M. R. Vagins, G. Collazuol, Mark Scott, Scott Davis, J.J. Gómez-Cadenas, M. Macaire, D. Hansen, G. D. Lopez, Y. Shustrov, Justin Albert, N. Abgrall, C. Lister, M. Miura, S. J. Ives, T. Yuan, Jung-Hyun Kim, A. V. Waldron, T. Nagasaki, A. Zalewska, Federico Sanchez, A. Murakami, A. Bravar, C. Matsumura, I. T. Lim, J. Dobson, S. L. Cartwright, K. Connolly, Joshua Hignight, D. Terhorst, Yoshihiro Suzuki, Y. Totsuka, Susumu Takahashi, T. Wongjirad, T. Maruyama, M. Bass, J. H. Jo, F. Khanam, G.D. Barr, I. Karpikov, T. Ishii, D. Kielczewska, M. Batkiewicz, A. Dabrowska, M. Hartz, K. Ieki, D. Karlen, R. J. Wilkes, T. Lindner, Y. Obayashi, Janusz Marzec, M. A. M. Rayner, P. A. Rodrigues, T. Duboyski, Gareth J. Barker, Takahiro Hiraki, Dmitriy Beznosko, W. R. Kropp, James R. Wilson, S. Tobayama, J. P. Coleman, A. Laing, Kodai Matsuoka, G. Jover-Manas, S. Horikawa, T. Dealtry, A. Missert, J. Holeczek, K. Nakayoshi, N. Buchanan, R. L. Helmer, D. I. Scully, A. Thorley, A. Korzenev, Rhiju Das, B. Jamieson, C. J. Densham, K. Zaremba, D. G. Brook-Roberge, Atsushi Takeda, K. K. Joo, T. Wachala, T. Nicholls, B. C. Smith, Yusuke Koshio, M. Mezzetto, L. L. Kormos, C. Wilkinson, F. Dufour, Antonin Vacheret, K. S. McFarland, M. Tzanov, C. J. Metelko, R. Poutissou, P. Masliah, K. Gilje, A. Marchionni, S. B. Kim, J. Y. Kim, R. Sulej, Iain Alexander Bertram, J. Imber, M. Shibata, A. Hyndman, S. Berkman, C. K. Jung, M. Ikeda, Masato Shiozawa, L. Ludovici, A. Kilinski, A. Haesler, G. Wikström, S. Bhadra, S. Y. Suzuki, Luigi Salvatore Esposito, and J. Lagoda

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, 0103 physical sciences, Monte Carlo method, Flux, Neutrino, Solar neutrino problem, 010306 general physics, 01 natural sciences
Published
2013

18. Search for proton decay viap→μ+K0in Super-Kamiokande I, II, and III

Author

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

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Muon, Proton, Proton decay, Atmospheric neutrino, Super-Kamiokande, Lower limit
Abstract

We have searched for proton into muon plus neutral kaon using data from a 91.7 kiloton-year exposure of Super-Kamiokande-I, a 49.2 kiloton-year exposure of Super-Kamiokande-II, and a 31.9 kiloton-year exposure of Super-Kamiokande-III. The number of candidate events in the data was consistent with the atmospheric neutrino background expectation and no evidence for proton decay in this mode was found. We set a partial lifetime lower limit of 1.6x10^33 years at the 90% confidence level.

Published
2012

19. Search for nucleon decay into charged antilepton plus meson in Super-Kamiokande I and II

Author

Atsushi Takeda, A. T. Suzuki, Y. Totsuka, T. Nakadaira, T. Tsukamoto, H. W. Sobel, Makoto Sakuda, C. W. Walter, Takaaki Kajita, G. D. Lopez, C. Yanagisawa, J. Liu, Yoshitaka Itow, B. S. Yang, Y. Idehara, J. G. Learned, T. Ishida, G. Mitsuka, Y. Furuse, N. Tanimoto, Shigeki Tasaka, Frédéric Dufour, K. Nishikawa, K. Nishijima, C. McGrew, N. Tamura, K. Ueshima, K. Sakashita, Hiroyuki Sekiya, Y. Hayato, John Hill, J. P. Cravens, Y. Fukuda, J. L. Stone, W. E. Keig, K. Kaneyuki, Shaomin Chen, Minoru Yoshida, S. Moriyama, R. J. Wilkes, M. Koshiba, T. Sekiguchi, Yuichi Oyama, M. Goldhaber, L. R. Sulak, Tetsuya S. Tanaka, Ko Okumura, Y. Takeuchi, K. Bays, Masayuki Nakahata, H. Nishino, E. Kearns, Y. Takenaga, M. Miura, Masashi Yokoyama, M. B. Smy, Yasunari Suzuki, K. Abe, H. Kaji, M. R. Vagins, J. S. Jang, Koh Ueno, Hiroshi Watanabe, Michael Litos, H. Okazawa, S. Mine, K. Connolly, T. Ishizuka, M. Ikeda, Yusuke Koshio, T. Ishii, T. Kobayashi, Tsuyoshi Nakaya, I. T. Lim, A. Minamino, C. K. Jung, Masato Shiozawa, Y. Choi, Takehisa Hasegawa, C. Ishihara, Haoxiong Zhang, S. Hazama, S. B. Kim, S. Matsuno, E. Thrane, J. Y. Kim, Justin Albert, Y. Kuno, Zishuo Yang, Kate Scholberg, C. Regis, J. L. Raaf, D. Kielczewska, Y. Watanabe, Y. Yokosawa, Y. Obayashi, W. R. Kropp, K. Nakamura, S. Yamada, I. Higuchi, Y. Heng, H. Seo, T. Iida, J. Kameda, S. Nakayama, R. A. Wendell, and K. S. Ganezer

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, FOS: Physical sciences, 01 natural sciences, 7. Clean energy, Omega, High Energy Physics - Experiment, 3. Good health, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, High Energy Physics::Experiment, Atmospheric neutrino, 010306 general physics, Nucleon, Super-Kamiokande
Abstract

Searches for a nucleon decay into a charged anti-lepton (e^+ or {\mu}^+) plus a light meson ({\pi}^0, {\pi}^-, {\eta}, {\rho}^0, {\rho}^-, {\omega}) were performed using the Super-Kamiokande I and II data. Twelve nucleon decay modes were searched for. The total exposure is 140.9 kiloton \cdot years, which includes a 91.7 kiloton \cdot year exposure (1489.2 live days) of Super-Kamiokande-I and a 49.2 kiloton \cdot year exposure (798.6 live days) of Super-Kamiokande-II. The number of candidate events in the data was consistent with the atmospheric neutrino background expectation. No significant evidence for a nucleon decay was observed in the data. Thus, lower limits on the nucleon partial lifetime at 90% confidence level were obtained. The limits range from 3.6 \times 10^31 to 8.2 \times 10^33 years, depending on the decay modes., Comment: 25 pages, 18 figures

Published
2012

20. Solar neutrino results in Super-Kamiokande-III

Author

C. K. Jung, J. L. Raaf, Y. Takeuchi, D. Kielczewska, Y. Watanabe, G. Mitsuka, J. S. Jang, Y. Yokosawa, N. Tanimoto, Y. Obayashi, K. S. Ganezer, Song Chen, Hiroshi Watanabe, John G. Learned, K. Connolly, W. R. Kropp, H. Nishino, S. Yamada, M. Dziomba, Minoru Yoshida, C. W. Walter, C. McGrew, Masato Shiozawa, Y. Choi, T. Iida, T. Tsukamoto, J. Kameda, H. Toyota, Y. Hayato, B. S. Yang, Ken-ichiro Kobayashi, P. Mijakowski, M. Koshiba, T. Ishida, Y. Takenaga, M. Goldhaber, Yuichi Oyama, K. Ueshima, R. J. Wilkes, John Hill, T. Tanaka, S. Moriyama, Haoxiong Zhang, S. Hazama, M. Miura, R. Terri, Masayuki Nakahata, Ko Okumura, A. Kibayashi, Michael Litos, W. Wang, A. T. Suzuki, Hiroyuki Sekiya, Y. Fukuda, S. B. Kim, H. W. Sobel, J. Y. Kim, N. Tamura, S. Nakayama, Y. Heng, Takaaki Mori, Frédéric Dufour, Atsushi Takeda, L. M. Magro, K. Abe, S. Tasaka, J. L. Stone, R. A. Wendell, M. Ikeda, M. R. Vagins, T. Nakadaira, W. E. Keig, K. Nishikawa, H. Kaji, K. Kaneyuki, Koji Nakamura, Ken Sakashita, L. Labarga, T. Sekiguchi, K. Bays, T. Ishii, T. Kobayashi, Makoto Sakuda, C. Yanagisawa, Yasunari Suzuki, Justin Albert, A. Minamino, I. T. Lim, Y. Shimizu, Y. Kuno, Yoshitaka Itow, K. Nishijima, Takaaki Kajita, G. D. Lopez, S. Mino, A. L. Renshaw, E. Kearns, Masashi Yokoyama, Yusuke Koshio, T. Ishizuka, T. McLachlan, Tsuyoshi Nakaya, H. Okazawa, S. Matsuno, K. Iyogi, J. P. Cravens, T. Yokozawa, David William Casper, H. Ogawa, C. Ishihara, L. R. Sulak, M. B. Smy, Koh Ueno, Hirokazu Ishino, Y. Totsuka, T. Wongjirad, Y. Kozuma, E. Thrane, Zishuo Yang, Kate Scholberg, S. Mine, Takehisa Hasegawa, C. Regis, and UAM. Departamento de Física Teórica

Subjects
Physics, Systematic error, Nuclear and High Energy Physics, Particle physics, Solar neutrino, Física, FOS: Physical sciences, Elementary particle, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Content (measure theory), Neutrino, Super-Kamiokande, Analysis method, Lepton
Abstract

Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiere, y los autores pertenecientes a la UAM, The results of the third phase of the Super-Kamiokande solar neutrino measurement are presented and compared to the first and second phase results. With improved detector calibrations, a full detector simulation, and improved analysis methods, the systematic uncertainty on the total neutrino flux is estimated to be ± 2.1%, which is about two thirds of the systematic uncertainty for the first phase of Super-Kamiokande. The observed 8B solar flux in the 5.0 to 20 MeV total electron energy region is 2.32 ± 0.04 (stat.) ± 0.05 (sys.) x 10^6 cm^-2sec^-1, under the assumption of pure electron-flavor content, in agreement with previous measurements. A combined oscillation analysis is carried out using SK-I, II, and III data, and the results are also combined with the results of other solar neutrino experiments. The best-fit oscillation parameters are obtained to be sin^2 {\theta}12 = 0.30+0.02-0.01(tan^2 {\theta}12 = 0.42+0.04 -0.02) and {\Delta}m2_21 = 6.2+1.1-1.9 *10^-5eV^2. Combined with KamLAND results, the best-fit oscillation parameters are found to be sin^2 {\theta}12 = 0.31±0.01 (tan^2 {\theta}12 = 0.44±0.03) and {\Delta}m2_21 = 7.6 ± 0.2 x 10^-5 eV^2. The 8B neutrino flux obtained from global solar neutrino experiments is 5.3 ± 0.2 (stat + sys) x 10^6cm^-2s^-1, while the 8B flux becomes 5.1 ± 0.1 (stat +sys ) x 10^6cm^-2s^-1 by adding KamLAND result. In a three-flavor analysis combining all solar neutrino experiments, the upper limit of sin^2 {\theta}13 is 0.060 at 95% C.L.. After combination with KamLAND results, the upper limit of sin^2 {\theta}13 is found to be 0.059 at 95% C.L., The authors gratefully acknowledge the cooperation of the Kamioka Mining and Smelting Company. Super-K has been built and operated from funds provided by the Japanese Ministry of Education, Culture, Sports, Science and Technology, the U.S. Department of Energy, and the U.S. National Science Foundation. This work was partially supported by the Research Foundation of Korea (BK21 and KNRC), the Korean Ministry of Science and Technology, the National Science Foundation of China, and the Spanish Ministry of Science and Innovation (Grants No. FPA2009- 13697-C04-02 and No. Consolider-Ingenio-2010/CPAN)

Published
2011

21. Kinematic reconstruction of atmospheric neutrino events in a large water Cherenkov detector with proton identification

Author

K. Kaneyuki, K. Ueshima, T. Nakadaira, T. Sekiguchi, Takaaki Tanaka, W. Wang, Lawrence Sulak, Robert Svoboda, J. S. Jang, K. Abe, C. McGrew, Y. Takeuchi, H. Nishino, R. J. Wilkes, A. Minamino, T. Tsukamoto, R. A. Wendell, Ken-ichiro Kobayashi, G. Mitsuka, Kimihiro Okumura, David William Casper, Masatoshi Koshiba, Y. Obayashi, Yusuke Koshio, S. Matsuno, T. Ishii, E. Thrane, Michael Litos, H. Ogawa, Frédéric Dufour, I. T. Lim, Y. Fukuda, K. Sakashita, Huaqiao Zhang, N. Tanimoto, J. Kameda, B. S. Yang, I. Higuchi, Masayuki Nakahata, Y. Idehara, Takashi Kobayashi, Song Chen, K. Bayes, Shigeki Tasaka, S. Moriyama, T. Iida, T. Hasegawa, S. Mine, C. Ishihara, E. Kearns, Yuichi Oyama, Makoto Sakuda, A. Suzuki, Masashi Yokoyama, T. Ishida, M. B. Smy, Yoshihiro Suzuki, Hiroshi Watanabe, M. Goldhaber, Y. Furuse, M. Vagins, J. L. Stone, C. Regis, K. S. Ganezer, C. K. Jung, M. Fechner, Yoshinari Hayato, H. Okazawa, Y. Totsuka, D. Kielczewska, C. W. Walter, J. G. Learned, Y. Kuno, N. Tamura, Y. Watanabe, Zishuo Yang, C. Yanagisawa, Kate Scholberg, S. Nakayama, J. Y. Kim, Tsuyoshi Nakaya, Takaaki Kajita, S. Dazeley, Koji Nakamura, G. D. Lopez, Y. Yokosawa, J. P. Cravens, K. Ueno, Atsushi Takeda, T. Ishizuka, Hiroyuki Sekiya, Soo-Bong Kim, M. Miura, J. L. Raaf, R. Terri, Minoru Yoshida, M. Ikeda, Masato Shiozawa, Y. Choi, H. Seo, S. Hazama, Y. Takenaga, W. R. Kropp, Y. Heng, K. Nishikawa, Henry W. Sobel, Kyoshi Nishijima, Yoshitaka Itow, S. Yamada, John Hill, and W. E. Keig

Subjects
Physics, Nuclear and High Energy Physics, Sterile neutrino, Particle physics, Neutral current, Proton, Physics::Instrumentation and Detectors, Cherenkov detector, High Energy Physics::Phenomenology, High Energy Physics - Experiment, law.invention, Nuclear physics, law, High Energy Physics::Experiment, Neutrino, Neutrino oscillation, Cherenkov radiation, Lepton
Abstract

We report the development of a proton identification method for the Super-Kamiokande detector. This new tool is applied to the search for events with a single proton track, a high purity neutral current sample of interest for sterile neutrino searches. After selection using a neural network, we observe 38 events in the combined SK-I and SK-II data corresponding to 2285.1 days of exposure, with an estimated signal to background ratio of 1.6 to 1. Proton identification was also applied to a direct search for charged-current quasi-elastic (CCQE) events, obtaining a high precision sample of fully kinematically reconstructed atmospheric neutrinos, which has not been previously reported in water Cherenkov detectors. The CCQE fraction of this sample is 55%, and its neutrino (as opposed to anti-neutrino) fraction is 91.7+/-3%. We selected 78 mu-like and 47 e-like events in the SK-I and SK-II data set. With this data, a clear zenith angle distortion of the neutrino direction itself is reported in a sub-GeV sample of muon neutrinos where the lepton angular correlation to the incoming neutrino is weak. Our fit to nu_mu->nu_tau oscillations using the neutrino L/E distribution of the CCQE sample alone yields a wide acceptance region compatible with our previous results and excludes the no-oscillation hypothesis at 3 sigma., Comment: 23 pages, 22 figures. Corrected typos, replaced some figures. Version accepted for publication in Phys. Rev. D

Published
2009

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