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162 results on '"Y Totsuka"'

1. Search for coherent charged pion production in neutrino-carbon interactions

Author

J. H. Choi, M. M. Khabibullin, Stephane T'Jampens, R. Gran, L. Whitehead, R. L. Helmer, T. Ishida, Katsuki Hiraide, S. Andringa, E. Fernandez, Takaaki Kajita, J. Y. Kim, J. Zalipska, A. Blondel, Shoei Nakayama, R. Terri, A. Ikeda, Y. Totsuka, Y. Takubo, Minoru Yoshida, S. Nawang, O. V. Mineev, C. Mariani, Y. Takeuchi, T. Nakadaira, Federico Sanchez, H. I. Jang, G. Jover, Shinya Yamada, G. Sitjes, T. Hara, Takehisa Hasegawa, K. Ishihara, K. K. Joo, K. McConnel, K. Nishikawa, Jordi Burguet-Castell, P. Novella, J. Hill, N. Tamura, Silvia Borghi, R. Schroeter, H. Yokoyama, F. Pierre, Michael B. Smy, M. Sekiguchi, J.J. Gómez-Cadenas, Y. Takenaga, Masaya Hasegawa, M. Miura, Yuichi Oyama, K. Kaneyuki, J. L. Stone, T. Inagaki, U. Dore, S. B. Kim, Makoto Sakuda, H. C. Bhang, Yu. Kudenko, J. Bouchez, M. Y. Pac, L. Ludovici, W. Wang, Koji Nakamura, Tomoyuki Maruyama, I. S. Jeong, C. Cavata, Itsuo Nakano, J. Argyriades, Toshio Namba, A. N. Khotjantsev, S. Matsuno, Masayuki Nakahata, Taichi Morita, Yasunari Suzuki, T. Kobayashi, T. Kutter, A. K. Ichikawa, H. Maesaka, Yoshitaka Itow, Masaaki Tanaka, A. Sarrat, K. Taki, Ko Okumura, F. Nova, E. J. Jeon, Hiroshi Sato, K. Asakura, P. Kitching, C. W. Walter, A. Konaka, Shigeki Aoki, S P Mikheyev, A. Cervera, C. Mauger, Kate Scholberg, J. Kameda, C. McGrew, Atsumu Suzuki, A. Okada, Y. Hayato, A. Minamino, H. G. Berns, Shoji Yamamoto, K. Hayashi, J. Mallet, Henry W. Sobel, K. Nitta, Tadayuki Takahashi, John G. Learned, Shaomin Chen, A. Tornero-Lopez, A. Rodriguez, D. Kerr, S. Likhoded, E. Sharkey, Y. Kuno, E. Kearns, C. O. Kim, Katsuhiro Kobayashi, Shigetaka Moriyama, Y. Fukuda, C. Saji, C. Yanagisawa, R. Ashie, K. O. Cho, T. Ishii, R. Nambu, X. Espinal, Y. Moriguchi, R. J. Wilkes, I. T. Lim, Masashi Yokoyama, Tsuyoshi Nakaya, J. Kubota, Masataka Iinuma, J. Yoo, Masato Shiozawa, T. Iwashita, C. K. Jung, D. Kielczewska, I. Kato, Y. Obayashi, S. Mine, M. Fechner, S. Ueda, E. Aliu, Mark R. Vagins, N. Yershov, W. R. Kropp, Yusuke Koshio, S. M. Oser, M. Ishitsuka, David William Casper, C. Mitsuda, J. Hosaka, K. K. Shiraishi, P. F. Loverre, T. Sasaki, L. R. Sulak, V. A. Matveev, Blondel, Alain, Borghi, Silvia, Cervera Villanueva, Anselmo, and Schroeter, Raphaël

Subjects
Particle physics, Meson, Physics::Instrumentation and Detectors, Neutrino-nucleus reactions, FOS: Physical sciences, General Physics and Astronomy, ddc:500.2, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Pion, Experiment-HEP, 0103 physical sciences, Nuclear Experiment (nucl-ex), 010306 general physics, Neutrino oscillation, Nuclear Experiment, Charged current, Physics, Muon, Tamura, Norio, 010308 nuclear & particles physics, Neutrino oscillations, Física, 田村, 詔生, Production (computer science), High Energy Physics::Experiment, Neutrino, Lepton
Abstract

We report the result from a search for charged-current coherent pion production induced by muon neutrinos with a mean energy of 1.3 GeV. The data are collected with a fully active scintillator detector in the K2K long-baseline neutrino oscillation experiment. No evidence for coherent pion production is observed and an upper limit of $0.60 \times 10^{-2}$ is set on the cross section ratio of coherent pion production to the total charged-current interaction at 90% confidence level. This is the first experimental limit for coherent charged pion production in the energy region of a few GeV., 5 pages, 4 figures

Published
2021

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

Author

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

Subjects
Physics, Particle physics, Physics - Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Astronomy and Astrophysics, Photon energy, High Energy Physics - Experiment, Nuclear physics, Supernova, Neutron capture, Neutron, High Energy Physics::Experiment, Experimental methods, Neutrino, Super-Kamiokande, Nuclear Experiment, Charged current
Abstract

A search for Supernova Relic Neutrinos $\bar{\nu}_e$'s is first conducted via inverse-beta-decay by tagging neutron capture on hydrogen at Super-Kamiokande-IV. The neutron tagging efficiency is determined to be $(17.74\pm0.04_{stat.}\pm1.05_{sys.})%$, while the corresponding accidental background probability is $(1.06\pm0.01_{stat.}\pm 0.18_{sys.})$%. Using 960 days of data, we obtain 13 inverse-beta-decay candidates in the range of $E_{\bar{\nu}_e}$ between 13.3 MeV and 31.3 MeV. All of the observed candidates are attributed to background. Upper limits at 90% C.L. are calculated in the absence of a signal., Comment: 6 pages, 4 figures

Published
2015
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3. 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
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4. The MTV Experiment: from T-violation To Lorentz-violation

Author

C. D. P. Levy, Saki Tanaka, H. Baba, S. Ozaki, Y. Totsuka, R. Openshaw, Fumiya Goto, M. R. Pearson, R. Tanuma, K. Ninomiya, Y. Sakamoto, Hirokazu Kawamura, J. Onishi, Shimizu Hirofumi, E. Watanabe, Y. Nakaya, Masaaki Kitaguchi, S. Inaba, M. Yokohashi, J. Murata, Y. Tanaka, Y. Shimizu, H. Masuda, and John Behr

Subjects
Physics, Scattering, Lorentz transformation, media_common.quotation_subject, Detector, Electron, Lorentz covariance, Mott scattering, Tracking (particle physics), Asymmetry, Nuclear physics, symbols.namesake, symbols, media_common
Abstract

The MTV (Mott Polarimetry for T-Violation) experiment is running at TRIUMF-ISAC (Isotope Separator and ACcelerator), searching for a large T violation in polarized Li-8 beta decay via measurements of the triple vector correlation, R, in the beta decay rate function. The left/right backward scattering asymmetry of Mott scattering from a thin metal foil is measured using an electron tracking detector including a cylindrical drift chamber (CDC). To achieve 10-ppm precision in the Mott scattering asymmetry, we performed multiple studies on the expected systematic effects. The sources of the systematics have been identified and calibration systems have been developed to evaluate the fake effects. The first physics data was collected in 2016 and significantly improved on the result of our previous measurement, which achieved 100-ppm precision in 2010 using the first generation detector (planer drift chamber) at TRIUMF. The data measurement status, together with the results of the systematics studies, is described here. In addition to the T violation, we are preparing to test the Lorentz invariance in the weak sector via our Mott analyzer system. Unexplored Lorentz violating correlations can be tested using the MTV experimental setup. The testing principle and preparation status are also described here.

Published
2017
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5. 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
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6. First result from the MTV experiment at TRIUMF searching T-violation in nuclear beta decay

Author

M. Ikeda, R. Kishi, H. Baba, T. Kato, E. Seitaibashi, Y. Totsuka, R. Tanuma, Hironori Nishio, T. Iguri, C. D. P. Levy, Saki Tanaka, K. Watanabe, T. Toyoda, M. R. Pearson, J. Murata, K. Ninomiya, R. Openshaw, Hirokazu Kawamura, John Behr, J. Onishi, and Y. Nakaya

Subjects
Physics, Nuclear and High Energy Physics, Scattering, media_common.quotation_subject, Polarimetry, Polarimeter, Electron, Polarization (waves), Beta decay, Asymmetry, Nuclear physics, Transverse plane, Nuclear Experiment, media_common
Abstract

The MTV experiment (Mott Polarimetry for T-Violation Experiment) is running from 2009 at TRIUMF, which aims to search a large non-standard T-Violation in polarized nuclear beta decay. Existence of transverse polarization of electrons emitted from polarized 8Li nuclei, which are produced at TRIUMF-ISAC and stopped inside an aluminum stopper, is investigated. We utilize a Mott polarimeter consists of a planer drift chamber, measuring backward scattering left-right asymmetry from a thin lead analyzer foil. In this paper, preliminary results from the first physics run performed in 2010 are described.

Published
2014
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7. The MTV experiment: a test of time reversal symmetry using polarized 8Li

Author

E. Seitaibashi, Yoshikazu Hirayama, N. Ogawa, M. R. Pearson, T. Toyoda, T. Kato, K. Ninomiya, M. Ikeda, C. D. P. Levy, Saki Tanaka, R. Kishi, H. Baba, J. Onishi, Y. Nakaya, John Behr, Hirokazu Kawamura, J. Murata, R. Openshaw, Y. Totsuka, R. Tanuma, and T. Iguri

Subjects
Physics, Nuclear and High Energy Physics, Scattering, Polarimetry, Electron, Mott scattering, Condensed Matter Physics, Polarization (waves), Atomic and Molecular Physics, and Optics, Triple correlation, Nuclear physics, Transverse plane, T-symmetry, Physics::Accelerator Physics, Physical and Theoretical Chemistry
Abstract

The MTV (Mott Polarimetry for T-Violation Experiment) experiment at TRIUMF-ISAC (Isotope Separator and ACcelerator), which aims to achieve the highest precision test of time reversal symmetry in polarized nuclear beta decay by measuring a triple correlation (R-correlation), is motivated by the search for a new physics beyond the Standard Model. In this experiment, the existence of non-zero transverse electron polarization is examined utilizing the analyzing power of Mott scattering from a thin metal foil. Backward scattering electron tracks are measured using a multi-wire drift chamber for the first time. The MTV experiment was commissioned at ISAC in 2009 using an 80%polarized 8Li beam at 107 pps, resulting in 0.1%statistical precision on the R-parameter in the first physics run performed in 2010. Next generation cylindrical drift chamber (CDC) is now being installed for the future run.

Published
2013
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8. Measurement of the inclusive $\nu_{\mu}$ charged current cross section on iron and hydrocarbon in the T2K on-axis neutrino beam

Author

P. de Perio, Yoshikazu Yamada, E. Larkin, D. Brailsford, M. J. Wilking, R. Poutissou, K. Mavrokoridis, F. d. M. Blaszczyk, Y. Kanazawa, J. D. Perkin, Hidekazu Kakuno, I. Kreslo, T. Sekiguchi, L. Ludovici, A. T. Suzuki, M. Ravonel, S. Martynenko, J. Lagoda, S. R. Dennis, A. Bravar, J. Steinmann, Y. Takeuchi, A. Cervera, V. Palladino, M. Kabirnezhad, T. Akiri, T. Hasegawa, G. Christodoulou, M. Sorel, J. F. Martin, D. Autiero, A. Redij, A. Thorley, A. Korzenev, K. Sakashita, S. M. Oser, C. Bojechko, R. J. Wilson, P. Jonsson, R. Ohta, D. Ruterbories, M. Ieva, Yasunari Suzuki, T. Nakadaira, C. K. Jung, Y. Seiya, W. R. Kropp, Minoru Otani, F. Sato, R. Castillo, Yuichi Oyama, R. P. Litchfield, M. Barbi, Hidetoshi Kubo, J. R. Wilson, C. Nielsen, S. Tobayama, K. Nakamura, A. K. Ichikawa, M. D. Haigh, Scott Davis, D. Hansen, I. Lamont, F. Bay, Masato Shiozawa, Antonin Vacheret, L. L. Kormos, S. Assylbekov, S. Moriyama, Masayuki Nakahata, D. R. Hadley, J. Zmuda, A. C. Weber, S. Roth, J. Kameda, S. Horikawa, T. Wachala, B. E. Berger, P. Sinclair, P. A. Rodrigues, M. Tzanov, Rhiju Das, B. Jamieson, C. J. Metelko, E. S. Pinzon Guerra, Hiroaki Aihara, Koji Yamamoto, P. N. Ratoff, T. Kutter, Th. A. Mueller, Y. Uchida, A. Hillairet, A. Longhin, J. Marteau, Z. Williamson, A. Haesler, K. S. McFarland, F. Sanchez, R. Tacik, O. Perevozchikov, Matthew T. Reeves, Takahiro Hiraki, C. Lister, N. Grant, S. Short, N. C. Hastings, P. Plonski, P. Mijakowski, M. Friend, Teppei Katori, V. Galymov, G. Collazuol, Mark Scott, T. Maruyama, A. Kilinski, S. Bhadra, Stefan Schoppmann, J. Caravaca Rodríguez, H.A. Tanaka, L. Zambelli, E. Radicioni, J. L. Palomino, Michal Dziewiecki, L. Southwell, J. Myslik, T. Duboyski, K. Gilje, S. Murphy, Masashi Tanaka, C. W. Walter, J. H. Jo, Artur F. Izmaylov, Seiko Hirota, A. P. Furmanski, T. Kikawa, M. Gonin, K. Zaremba, L. Escudero, H. M. O'Keeffe, Kazuhiro Suzuki, V. Paolone, T. Golan, D. Kielczewska, M. Batkiewicz, G.D. Barr, K. Abe, C. Pistillo, W. Oryszczak, André Rubbia, K. Huang, A. Jacob, Yuki Fujii, E. Mazzucato, B. A. Popov, A. Dabrowska, T. Dealtry, K. Ieki, D. Karlen, A. Missert, K. Iyogi, L. F. Thompson, E. D. Zimmerman, Jan Kisiel, M. Yu, D. L. Wark, J. M. Poutissou, C. Bronner, Atsushi Takeda, P. Kitching, M. O. Wascko, J. Adam, D. Cherdack, A. Clifton, Yusuke Koshio, B. Smith, E. Reinherz-Aronis, T. Okusawa, J. Holeczek, S. B. Boyd, K. Nakayoshi, N. Buchanan, F. Retiere, M. Murdoch, Jungsang Kim, S. Y. Suzuki, Takaaki Kajita, Y. Shustrov, K. Iwamoto, A. Zalewska, I. Karpikov, R. J. Wilkes, Hiroyuki Sekiya, T. Szeglowski, R. Sacco, S. Nakayama, D. Goeldi, E. Scantamburlo, Kate Scholberg, D. Dewhurst, T. Kobayashi, Yukika Nishimura, S. Di Luise, L. Cremonesi, A. V. Waldron, C. McGrew, A. N. Khotjantsev, S. Yen, L. Koch, T. Yano, R. L. Helmer, M. Ikeda, M. Bass, A. C. Kaboth, J. Dumarchez, J. Schwehr, R.P. Kurjata, S. J. Coleman, T. Tomura, M. Hartz, H. K. Tanaka, Y. Hayato, C. Wilkinson, P. Stamoulis, Joshua Hignight, Y. Fukuda, M. Posiadala, M. G. Catanesi, Kendall Mahn, C. Andreopoulos, T. Lindner, A. J. Finch, R. A. Johnson, E. Kearns, S. Berkman, C. Touramanis, Antonio Ereditato, D. Sgalaberna, O. V. Mineev, Masashi Yokoyama, E. Poplawska, C. Yanagisawa, Y. Totsuka, M. Zito, I. Z. Danko, A. Konaka, M. M. Khabibullin, R. A. Wendell, Susumu Takahashi, Vincenzo Berardi, N. Yershov, M. A.M. Rayner, T. Tsukamoto, T. Hara, M. B. Smy, A. D. Marino, Y. Petrov, E. Rondio, W. H. Toki, O. Drapier, T. Wongjirad, S. Emery-Schrenk, A. Blondel, S. A. Dytman, G. De Rosa, R. A. Owen, Gareth J. Barker, N. McCauley, M. Hierholzer, F. Di Lodovico, M. McCarthy, B. Still, M. Tada, Yusuke Suda, D. J. Payne, R. Terri, K. E. Duffy, G. Vasseur, Tsuyoshi Nakaya, J. Imber, T. Ishida, M. Miura, A. Himmel, A. Kolaceke, T. Yuan, R. G. Calland, T. Ishii, D. Gudin, M. Lazos, S. Manly, P. Hamilton, M. Nirkko, P. Przewlocki, S. Bordoni, S. L. Cartwright, L. Magaletti, C. Giganti, K. Connolly, E. Iwai, D. Terhorst, M. R. Vagins, A. Murakami, Yu. Kudenko, K. Nishikawa, Jan T. Sobczyk, K. Laihem, T. J. Irvine, K. Koseki, M. Lawe, H. W. Sobel, P. Rojas, C. A. Miller, A. Minamino, C. Hearty, M. Ziembicki, J. Zalipska, J. Insler, B. Quilain, Marco Laveder, J. P. Coleman, C. Densham, M. Malek, Akitaka Ariga, Ko Okumura, Shigeki Aoki, L. Pickard, S. Giffin, V. Matveev, Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), T2K, K. a., Abe, J., Adam, H. a., Aihara, T., Akiri, C., Andreopoulo, S., Aoki, A., Ariga, S., Assylbekov, D., Autiero, M., Barbi, G., Barker, G., Barr, M., Ba, M., Batkiewicz, F., Bay, V., Berardi, B. w., Berger, S., Berkman, S., Bhadra, F., Blaszczyk, A., Blondel, C., Bojechko, S., Bordoni, S., Boyd, D., Brailsford, A., Bravar, C., Bronner, N., Buchanan, R., Calland, J. C., Rodr??????guez, S., Cartwright, R., Castillo, M., Catanesi, A., Cervera, D., Cherdack, G., Christodoulou, A., Clifton, J., Coleman, S., Coleman, G., Collazuol, K., Connolly, L., Cremonesi, A., Dabrowska, I., Danko, R., Da, S., Davi, P. D., Perio, DE ROSA, Gianfranca, T. a., Dealtry, S. b., Denni, C., Densham, D., Dewhurst, F. D., Lodovico, S. D., Luise, O., Drapier, T., Duboyski, K., Duffy, J., Dumarchez, S., Dytman, M., Dziewiecki, S., Emery Schrenk, A., Ereditato, L., Escudero, A., Finch, M., Friend, Y., Fujii, Y., Fukuda, A., Furmanski, V., Galymov, S., Giffin, C., Giganti, K., Gilje, D., Goeldi, T., Golan, M., Gonin, N., Grant, D., Gudin, D., Hadley, A., Haesler, M., Haigh, P., Hamilton, D., Hansen, T., Hara, M. a., Hartz, T., Hasegawa, N., Hasting, Y. a., Hayato, C., Hearty, R., Helmer, M., Hierholzer, J., Hignight, A., Hillairet, A., Himmel, T., Hiraki, S., Hirota, J., Holeczek, S., Horikawa, K., Huang, A., Ichikawa, K., Ieki, M., Ieva, M., Ikeda, J., Imber, J., Insler, T., Irvine, T., Ishida, T., Ishii, E., Iwai, K., Iwamoto, K., Iyogi, A. v., Izmaylov, A., Jacob, B., Jamieson, R., Johnson, J., Jo, P., Jonsson, C., Jung, M., Kabirnezhad, A., Kaboth, T., Kajita, H., Kakuno, J., Kameda, Y., Kanazawa, D. a., Karlen, I., Karpikov, T., Katori, E. w., Kearn, M., Khabibullin, A., Khotjantsev, D., Kielczewska, T., Kikawa, A., Kilinski, J., Kim, J., Kisiel, P., Kitching, T., Kobayashi, L., Koch, A., Kolaceke, A., Konaka, L., Kormo, A., Korzenev, K., Koseki, Y., Koshio, I., Kreslo, W., Kropp, H., Kubo, Y., Kudenko, R., Kurjata, T., Kutter, J., Lagoda, K., Laihem, I., Lamont, E., Larkin, M., Laveder, M., Lawe, M., Lazo, T., Lindner, C., Lister, R., Litchfield, A., Longhin, L., Ludovici, L., Magaletti, K., Mahn, M., Malek, S., Manly, A., Marino, J., Marteau, J., Martin, S., Martynenko, T., Maruyama, V., Matveev, K., Mavrokoridi, E., Mazzucato, M., Mccarthy, N., Mccauley, K., Mcfarland, C., Mcgrew, C., Metelko, P., Mijakowski, C., Miller, A., Minamino, O., Mineev, A., Missert, M., Miura, S., Moriyama, T., Mueller, A., Murakami, M., Murdoch, S., Murphy, J., Myslik, T., Nakadaira, M. a., Nakahata, K. w., Nakamura, S., Nakayama, T. y., Nakaya, K., Nakayoshi, C., Nielsen, M., Nirkko, K., Nishikawa, Y., Nishimura, H., O'Keeffe, R., Ohta, K. a., Okumura, T., Okusawa, W., Oryszczak, S., Oser, M., Otani, R., Owen, Y., Oyama, Palladino, Vittorio, J., Palomino, V., Paolone, D., Payne, O., Perevozchikov, J., Perkin, Y., Petrov, L., Pickard, E. P., Guerra, C., Pistillo, P., Plonski, E., Poplawska, B., Popov, M., Posiadala, J., Poutissou, R., Poutissou, P., Przewlocki, B., Quilain, E., Radicioni, P., Ratoff, M., Ravonel, M., Rayner, A., Redij, M., Reeve, E., Reinherz Aroni, F., Retiere, P., Rodrigue, P., Roja, E., Rondio, S., Roth, A., Rubbia, D., Ruterborie, R., Sacco, K., Sakashita, F., S??????nchez, F., Sato, E., Scantamburlo, K., Scholberg, S., Schoppmann, J., Schwehr, M., Scott, Y., Seiya, T., Sekiguchi, H., Sekiya, D., Sgalaberna, M. a., Shiozawa, S., Short, Y., Shustrov, P., Sinclair, B., Smith, M., Smy, J., Sobczyk, H. w., Sobel, M., Sorel, L., Southwell, P., Stamouli, J., Steinmann, B., Still, Y., Suda, A., Suzuki, K., Suzuki, S., Suzuki, Y., Suzuki, T., Szeglowski, R. a., Tacik, M., Tada, S., Takahashi, A., Takeda, Y. x., Takeuchi, H., Tanaka, M., Tanaka, D., Terhorst, R., Terri, L., Thompson, A., Thorley, S., Tobayama, W., Toki, T., Tomura, Y., Totsuka, C., Touramani, T., Tsukamoto, M., Tzanov, Y., Uchida, A., Vacheret, M. w., Vagin, G., Vasseur, T., Wachala, A., Waldron, C., Walter, D. a., Wark, M., Wascko, A. a., Weber, R., Wendell, R., Wilke, M., Wilking, C., Wilkinson, Z., Williamson, J., Wilson, R., Wilson, T., Wongjirad, Y., Yamada, K., Yamamoto, C., Yanagisawa, T., Yano, S., Yen, N., Yershov, M., Yokoyama, T., Yuan, M., Yu, A., Zalewska, J., Zalipska, L., Zambelli, K., Zaremba, M., Ziembicki, E., Zimmerman, M., Zito, J., Zmuda, Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), and Science and Technology Facilities Council (STFC)

Subjects
Particle physics, Nuclear and High Energy Physics, Astrophysics::High Energy Astrophysical Phenomena, Flux, FOS: Physical sciences, Astronomy & Astrophysics, 7. Clean energy, 01 natural sciences, Physics, Particles & Fields, High Energy Physics - Experiment, Nuclear physics, Cross section (physics), Physics and Astronomy (all), High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Neutrino oscillation, Nuclear Experiment, DETECTOR, Charged current, Mathematical Physics, chemistry.chemical_classification, Physics, Science & Technology, hep-ex, 010308 nuclear & particles physics, T2K experiment, Física, Hydrocarbon, chemistry, Physical Sciences, High Energy Physics::Experiment, Neutrino, Nucleon
Abstract

We report a measurement of the $\nu_\mu$ inclusive charged current cross sections on iron and hydrocarbon in the T2K on-axis neutrino beam. The measured inclusive charged current cross sections on iron and hydrocarbon averaged over the T2K on-axis flux with a mean neutrino energy of 1.51 GeV are $(1.444\pm0.002(stat.)_{-0.157}^{+0.189}(syst.))\times 10^{-38}\mathrm{cm}^2/\mathrm{nucleon}$, and $(1.379\pm0.009(stat.)_{-0.147}^{+0.178}(syst.))\times 10^{-38}\mathrm{cm}^2/\mathrm{nucleon}$, respectively, and their cross section ratio is $1.047\pm0.007(stat.)\pm0.035(syst.)$. These results agree well with the predictions of the neutrino interaction model, and thus we checked the correct treatment of the nuclear effect for iron and hydrocarbon targets in the model within the measurement precisions., Comment: 15 pages, 17 figures

Published
2014
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9. Search for Neutrinos in Super-Kamiokande associated with Gravitational Wave Events GW150914 and GW151226

Author

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

Subjects
Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, 7. Clean energy, 01 natural sciences, Gravitational waves, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Coincident, 0103 physical sciences, GW151226, Neutrinos, 010303 astronomy & astrophysics, Zenith, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Muon, 010308 nuclear & particles physics, Gravitational wave, High Energy Physics::Phenomenology, Física, Astronomy and Astrophysics, 13. Climate action, Space and Planetary Science, High Energy Physics::Experiment, Neutrino, Astroparticle physics, Super-Kamiokande, Astrophysics - High Energy Astrophysical Phenomena, Event (particle physics)
Abstract

Astrophysical Journal Letters 830.1 (2016): L11 reproduced by permission of the AAS, We report the results from a search in Super-Kamiokande for neutrino signals coincident with the first detected gravitational-wave events, GW150914 and GW151226, as well as LVT151012, using a neutrino energy range from 3.5 MeV to 100 PeV. We searched for coincident neutrino events within a time window of ±500 s around the gravitational-wave detection time. Four neutrino candidates are found for GW150914, and no candidates are found for GW151226. The remaining neutrino candidates are consistent with the expected background events. We calculated the 90% confidence level upper limits on the combined neutrino fluence for both gravitational-wave events, which depends on event energy and topologies. Considering the upward-going muon data set (1.6 GeV-100 PeV), the neutrino fluence limit for each gravitational-wave event is 14-37 (19-50) cm-2 for muon neutrinos (muon antineutrinos), depending on the zenith angle of the event. In the other data sets, the combined fluence limits for both gravitational-wave events range from 2.4 ×104 to 7.0 ×109 cm-2, The Super-Kamiokande experiment has been built and operated from funding by the Japanese Ministry of Education, Culture, Sports, Science and Technology, the U.S. Department of Energy, and the U.S. National Science Foundation. Some of us have been supported by funds from the Korean Research Foundation (BK21 and KNRC), the National Research Foundation of Korea (NRF-20110024009), the European Union (H2020 RISE-GA641540-SKPLUS), the Japan Society for the Promotion of Science, the National Natural Science Foundation of China under grant No. 11235006, and the Scinet and Westgrid consortia of Compute Canada

Published
2016

10. The MTV experiment: searching for T-violation in polarized Li-8 at TRIUMF

Author

M. R. Pearson, Fumiya Goto, Y. Sakamoto, Y. Nakaya, Y. Totsuka, John Behr, J. Onishi, S. Inaba, E. Watanabe, Hirokazu Kawamura, Hirohiko M. Shimizu, R. Openshaw, J. Murata, Y. Tanaka, H. Baba, R. Tanuma, C. D. P. Levy, Saki Tanaka, H. Masuda, Y. Shimizu, M. Yokohashi, K. Ninomiya, and Masaaki Kitaguchi

Subjects
Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Scattering, media_common.quotation_subject, Polarimetry, Polarimeter, Mott scattering, Condensed Matter Physics, 01 natural sciences, Asymmetry, Measure (mathematics), Atomic and Molecular Physics, and Optics, Nuclear physics, Transverse plane, 0103 physical sciences, Thin metal, High Energy Physics::Experiment, Condensed Matter::Strongly Correlated Electrons, Physical and Theoretical Chemistry, 010306 general physics, media_common
Abstract

The MTV experiment (Mott Polarimetry for T-Violation Experiment) is running at TRIUMF, to search for a large T-violating transverse electron-polarization in polarized 8Li β-decay. We aim at reaching precision of 10−4 for the R-correlation, which is defined as a T-violating triple vector correlation in the β-decay rate function. A Mott polarimeter system using a CDC (Cylindrical Drift Chamber) is used to measure the left-right scattering asymmetry in the Mott scattering from a thin metal foil. In the present study, we aim to discuss systematic effects in Mott polarimetry using the CDC.

Published
2016
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11. Observation of Electron Neutrino Appearance in a Muon Neutrino Beam

Author

Y. Yamada, E. Rondio, N. McCauley, K. Huang, M. Bass, S. L. Cartwright, K. Connolly, J. Kameda, P. Przewlocki, M. J. Wilking, J. Zmuda, L. L. Kormos, D. Brailsford, R. Ohta, André Rubbia, R. Poutissou, S. Takahashi, D. Terhorst, Lester D.R. Thompson, K. Zaremba, F. Sato, R. Castillo, Yuichi Oyama, J. Kisiel, Berardi, R. P. Litchfield, F. Di Lodovico, C. Hearty, A. Izmaylov, J. Steinmann, Atsushi Takeda, A. Kilinski, C. W. Walter, K. Gilje, A. V. Waldron, T. Nagasaki, Alexander Finch, A. Clifton, T. Dealtry, A. Missert, A. Redij, S. Assylbekov, A. Longhin, L. Ludovici, J. Caravaca Rodríguez, Yu. G. Kudenko, J. Marteau, P. A. Rodrigues, M. Lawe, R. J. Smith, Z. Williamson, A. Kolaceke, H.A. Tanaka, P. Rojas, K. Nakayoshi, L. Monfregola, Kimihiro Okumura, P. Hamilton, S. Tobayama, Frédéric Dufour, T. Okusawa, Joshua Hignight, Yoshihiro Suzuki, S. Murphy, C. Licciardi, M. Ikeda, A. C. Kaboth, Y. Fukuda, Y. Totsuka, I. Lamont, D. Autiero, R. A. Johnson, M. Miura, L. Magaletti, C. Giganti, F. Retiere, M. A.M. Rayner, T. Wachala, B. Quilain, Dennis, T. Wongjirad, M. Vagins, S. Horikawa, T. Akiri, S. Berkman, A. C. Weber, Robert Wilson, J. M. Poutissou, C. Bronner, K. Mavrokoridis, J. Adam, J. Lagoda, Sy Suzuki, F. d. M. Blaszczyk, M. Murdoch, Hiroyuki Sekiya, T. Szeglowski, S. Yen, C. Bojechko, R. L. Helmer, Kendall Mahn, S. Kumaratunga, Yusuke Koshio, Galymov, M. Ravonel, Marco Laveder, D. Cherdack, K. Abe, R. Sacco, C. McGrew, Y. Kanazawa, B. Still, Masashi Tanaka, A. P. Furmanski, P. Stamoulis, A. Gaudin, L. Koch, T. Sekiguchi, A. Hillairet, Y. Petrov, Ken Sakashita, C. Andreopoulos, A. Zalewska, K. Nishikawa, G. Christodoulou, D. Naples, T. Hara, A. Jacob, S. Manly, Antonin Vacheret, W. R. Kropp, T. Hasegawa, S. Mine, C. K. Jung, W. Toki, G. De Rosa, J. Holeczek, S. Nakayama, K. E. Duffy, Iain Alexander Bertram, S. W. K. Emery, K. Koseki, K. Iyogi, R. A. Owen, D. Kielczewska, M. Batkiewicz, J. F. Martin, M. Tzanov, M. Ieva, Jan T. Sobczyk, C. J. Metelko, S. M. Oser, A. Dabrowska, S. Dytman, M. Barbi, N. Grant, J. Imber, S. Moriyama, S. Short, N. C. Hastings, G. Collazuol, E. D. Zimmerman, J.J. Gómez-Cadenas, E. Mazzucato, H. Kubo, G. F. Pearce, Y. Seiya, M. Macaire, Masayuki Nakahata, A. Konaka, F. Bay, M. Posiadala, Y. Uchida, M. B. Smy, M. G. Catanesi, P. Plonski, R. Tacik, J. D. Perkin, Mark Scott, Oleg Mineev, J. Schwehr, O. Perevozchikov, Hajime Tanaka, M. Gonin, Takahiro Hiraki, C. Pistillo, L. Escudero, P. de Perio, S. Bordoni, D. Goeldi, S. Di Luise, L. Cremonesi, Hadley, T. Yuan, Palladino, T. J. Irvine, M. Ziembicki, J. Zalipska, J. Insler, K. Laihem, Y. Suda, Henry W. Sobel, T. Lindner, W. Oryszczak, D. Sgalaberna, C. Densham, M. Sorel, B. Smith, O. Drapier, M. Nirkko, E. Reinherz-Aronis, Michal Dziewiecki, Kazuhiro Yamamoto, R. A. Wendell, Y. Nishimura, Takaaki Kajita, Matveev, K. Ueno, A. K. Ichikawa, Tomoko Ariga, Y. Shustrov, S. Hirota, B. E. Berger, S. Roth, M. Mezzetto, A. Cervera, Federico Sanchez, G. Vasseur, E. S. Pinzon Guerra, Th. A. Mueller, M. Zito, Matthew T. Reeves, J. Marzec, Paolone, D. Payne, H. Kakuno, I. Kreslo, C. Nielsen, H. M. O'Keeffe, E. Scantamburlo, P. Kitching, M. O. Wascko, E. Kearns, C. Lister, R.P. Kurjata, S. W. Bentham, Akitaka Ariga, T. Tsukamoto, L. Zambelli, B. A. Popov, Shigeki Aoki, T. Maruyama, L. Pickard, R. Terri, S. Giffin, Wilson, Kate Scholberg, T. Nakadaira, J. H. Jo, A. Murakami, M. Hartz, I. Z. Danko, A. Thorley, A. Korzenev, G.D. Barr, A. Minamino, M. Malek, Rhiju Das, B. Jamieson, K. P. Lee, I. Karpikov, S. J. Coleman, L. Southwell, J. Myslik, C. Touramanis, Antonio Ereditato, N. Yershov, T. Golan, Kevin Scott McFarland, T. Kikawa, Takashi Kobayashi, J. Dumarchez, L. Floetotto, Scott Davis, D. Hansen, S. J. Ives, C. A. Miller, T. Tomura, E. L. Mathie, S. B. Boyd, T. Ishii, M. M. Khabibullin, K. Suzuki, M. McCarthy, Y. Takeuchi, T. Ishida, D. Ruterbories, Hiroaki Aihara, P. N. Ratoff, T. Kutter, Koji Nakamura, A. N. Khotjantsev, Y. Fujii, A. Suzuki, Masashi Yokoyama, E. Poplawska, Tsuyoshi Nakaya, M. Friend, A. Bravar, Masato Shiozawa, M. Tada, A. Haesler, P. Jonsson, S. Bhadra, P. Sinclair, Arnaud Robert, P. Mijakowski, Jy Kim, A. Himmel, E. Radicioni, R. G. Calland, D. Gudin, M. Lazos, D. L. Wark, A. D. Marino, A. Blondel, N. J. Buchanan, K. Ieki, D. Karlen, R. J. Wilkes, C. Wilkinson, C. Yanagisawa, Gareth J. Barker, M. Hierholzer, J. P. Coleman, Yoshinari Hayato, Haigh, T. Duboyski, T. Nakai, Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, T2K, K., Abe, J., Adam, H., Aihara, T., Akiri, C., Andreopoulo, S., Aoki, A., Ariga, T., Ariga, S., Assylbekov, D., Autiero, M., Barbi, G., Barker, G., Barr, M., Ba, M., Batkiewicz, F., Bay, S., Bentham, V., Berardi, B., Berger, S., Berkman, I., Bertram, S., Bhadra, F., Blaszczyk, A., Blondel, C., Bojechko, S., Bordoni, S., Boyd, D., Brailsford, A., Bravar, C., Bronner, N., Buchanan, R., Calland, J. C., Rodr??????guez, S., Cartwright, R., Castillo, M., Catanesi, A., Cervera, D., Cherdack, G., Christodoulou, A., Clifton, J., Coleman, S., Coleman, G., Collazuol, K., Connolly, L., Cremonesi, A., Dabrowska, I., Danko, R., Da, S., Davi, P. D., Perio, DE ROSA, Gianfranca, T., Dealtry, S., Denni, C., Densham, F. D., Lodovico, S. D., Luise, O., Drapier, T., Duboyski, K., Duffy, F., Dufour, J., Dumarchez, S., Dytman, M., Dziewiecki, S., Emery, A., Ereditato, L., Escudero, A., Finch, L., Floetotto, M., Friend, Y., Fujii, Y., Fukuda, A., Furmanski, V., Galymov, A., Gaudin, S., Giffin, C., Giganti, K., Gilje, D., Goeldi, T., Golan, J., Gomez Cadena, M., Gonin, N., Grant, D., Gudin, D., Hadley, A., Haesler, M., Haigh, P., Hamilton, D., Hansen, T., Hara, M., Hartz, T., Hasegawa, N., Hasting, Y., Hayato, C., Hearty, R., Helmer, M., Hierholzer, J., Hignight, A., Hillairet, A., Himmel, T., Hiraki, S., Hirota, J., Holeczek, S., Horikawa, K., Huang, A., Ichikawa, K., Ieki, M., Ieva, M., Ikeda, J., Imber, J., Insler, T., Irvine, T., Ishida, T., Ishii, S., Ive, K., Iyogi, A., Izmaylov, A., Jacob, B., Jamieson, R., Johnson, J., Jo, P., Jonsson, C., Jung, A., Kaboth, T., Kajita, H., Kakuno, J., Kameda, Y., Kanazawa, D., Karlen, I., Karpikov, E., Kearn, M., Khabibullin, A., Khotjantsev, D., Kielczewska, T., Kikawa, A., Kilinski, J., Kim, J., Kisiel, P., Kitching, T., Kobayashi, L., Koch, A., Kolaceke, A., Konaka, L., Kormo, A., Korzenev, K., Koseki, Y., Koshio, I., Kreslo, W., Kropp, H., Kubo, Y., Kudenko, S., Kumaratunga, R., Kurjata, T., Kutter, J., Lagoda, K., Laihem, I., Lamont, M., Laveder, M., Lawe, M., Lazo, K., Lee, C., Licciardi, T., Lindner, C., Lister, R., Litchfield, A., Longhin, L., Ludovici, M., Macaire, L., Magaletti, K., Mahn, M., Malek, S., Manly, A., Marino, J., Marteau, J., Martin, T., Maruyama, J., Marzec, E., Mathie, V., Matveev, K., Mavrokoridi, E., Mazzucato, M., Mccarthy, N., Mccauley, K., Mcfarland, C., Mcgrew, C., Metelko, M., Mezzetto, P., Mijakowski, C., Miller, A., Minamino, O., Mineev, S., Mine, A., Missert, M., Miura, L., Monfregola, S., Moriyama, T., Mueller, A., Murakami, M., Murdoch, S., Murphy, J., Myslik, T., Nagasaki, T., Nakadaira, M., Nakahata, T., Nakai, K., Nakamura, S., Nakayama, T., Nakaya, K., Nakayoshi, D., Naple, C., Nielsen, M., Nirkko, K., Nishikawa, Y., Nishimura, H., O'Keeffe, R., Ohta, K., Okumura, T., Okusawa, W., Oryszczak, S., Oser, R., Owen, Y., Oyama, Palladino, Vittorio, V., Paolone, D., Payne, G., Pearce, O., Perevozchikov, J., Perkin, Y., Petrov, L., Pickard, E. P., Guerra, C., Pistillo, P., Plonski, E., Poplawska, B., Popov, M., Posiadala, J., Poutissou, R., Poutissou, P., Przewlocki, B., Quilain, E., Radicioni, P., Ratoff, M., Ravonel, M., Rayner, A., Redij, M., Reeve, E., Reinherz Aroni, F., Retiere, A., Robert, P., Rodrigue, P., Roja, E., Rondio, S., Roth, A., Rubbia, D., Ruterborie, R., Sacco, K., Sakashita, F., S??????nchez, F., Sato, E., Scantamburlo, K., Scholberg, J., Schwehr, M., Scott, Y., Seiya, T., Sekiguchi, H., Sekiya, D., Sgalaberna, M., Shiozawa, S., Short, Y., Shustrov, P., Sinclair, B., Smith, R., Smith, M., Smy, J., Sobczyk, H., Sobel, M., Sorel, L., Southwell, P., Stamouli, J., Steinmann, B., Still, Y., Suda, A., Suzuki, K., Suzuki, S., Suzuki, Y., Suzuki, T., Szeglowski, R., Tacik, M., Tada, S., Takahashi, A., Takeda, Y., Takeuchi, H., Tanaka, M., Tanaka, D., Terhorst, R., Terri, L., Thompson, A., Thorley, S., Tobayama, W., Toki, T., Tomura, Y., Totsuka, C., Touramani, T., Tsukamoto, M., Tzanov, Y., Uchida, K., Ueno, A., Vacheret, M., Vagin, G., Vasseur, T., Wachala, A., Waldron, C., Walter, D., Wark, M., Wascko, A., Weber, R., Wendell, R., Wilke, M., Wilking, C., Wilkinson, Z., Williamson, J., Wilson, R., Wilson, T., Wongjirad, Y., Yamada, K., Yamamoto, C., Yanagisawa, S., Yen, N., Yershov, M., Yokoyama, T., Yuan, A., Zalewska, J., Zalipska, L., Zambelli, K., Zaremba, M., Ziembicki, E., Zimmerman, M., Zito, Muda, J. ?. ?. ?., Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), and Science and Technology Facilities Council (STFC)

Subjects
General Physics, Particle physics, Solar neutrino, Physics, Multidisciplinary, FOS: Physical sciences, General Physics and Astronomy, 7. Clean energy, 09 Engineering, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Tau neutrino, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Neutrino oscillation, 01 Mathematical Sciences, Physics, Science & Technology, 02 Physical Sciences, hep-ex, High Energy Physics::Phenomenology, T2K experiment, Física, Solar neutrino problem, Neutrino detector, T2K Collaboration, Physical Sciences, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino
Abstract

The T2K experiment has observed electron neutrino appearance in a muon neutrino beam produced 295 km from the Super-Kamiokande detector with a peak energy of 0.6 GeV. A total of 28 electron neutrino events were detected with an energy distribution consistent with an appearance signal, corresponding to a significance of 7.3$\sigma$ when compared to 4.92 $\pm$ 0.55 expected background events. In the PMNS mixing model, the electron neutrino appearance signal depends on several parameters including three mixing angles $\theta_{12}$, $\theta_{23}$, $\theta_{13}$, a mass difference $\Delta m^2_{32}$ and a CP violating phase $\delta_{\mathrm{CP}}$. In this neutrino oscillation scenario, assuming $|\Delta m^2_{32}| = 2.4 \times 10^{-3}$ $\rm eV^2$, $\sin^2 \theta_{23} = 0.5$, and $\Delta m^2_{32} >0$ ($\Delta m^2_{32}, Comment: 8 pages, 6 figures

Published
2014
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12. Measurement of the neutrino-oxygen neutral-current interaction cross section by observing nuclear deexcitation gamma rays

Author

J. Caravaca Rodríguez, H.A. Tanaka, R. Poutissou, J. Holeczek, K. Nakayoshi, N. Buchanan, A. C. Weber, R. L. Helmer, M. Yu, S. Kumaratunga, A. Redij, J. M. Poutissou, C. Bronner, Yukika Nishimura, J. Zmuda, S. J. Coleman, T. J. Irvine, M. Posiadala-Zezula, N. Grant, C. Touramanis, Antonio Ereditato, L. Southwell, J. Myslik, T. Sekiguchi, L. Ludovici, G. Collazuol, Mark Scott, N. Yershov, T. Golan, K. Suzuki, Y. Takeuchi, M. Sorel, André Rubbia, T. Ovsyannikova, S. Murphy, A. K. Ichikawa, S. Roth, J. Kameda, E. S. Pinzon Guerra, Th. A. Mueller, Matthew T. Reeves, P. Mijakowski, H. M. O'Keeffe, F. Di Lodovico, P. Kitching, M. O. Wascko, T. Maruyama, Yuki Fujii, Takaaki Kajita, Y. Shustrov, M. Ieva, C. Yanagisawa, M. M. Khabibullin, K. Zaremba, A. V. Waldron, T. Nagasaki, J. H. Jo, C. Nantais, G.D. Barr, F. Retiere, T. Nakai, M. Tada, Yu. G. Kudenko, L. Monfregola, S. Manly, P. Hamilton, B. A. Popov, C. A. Miller, O. Drapier, M. McCarthy, M. D. Haigh, I. Lamont, K. Iwamoto, A. Clifton, A. Minamino, A. T. Suzuki, A. Zalewska, L. Magaletti, C. Giganti, F. Sato, R. Castillo, Yuichi Oyama, J. Dumarchez, J. Schwehr, Takahiro Hiraki, I. Karpikov, Gareth J. Barker, M. Hierholzer, K. Huang, Atsushi Takeda, R. P. Litchfield, E. Rondio, N. McCauley, Hiroaki Aihara, M. Ravonel, P. Stamoulis, J. A. Nowak, E. Iwai, J. F. Martin, Kate Scholberg, T. Akiri, S. Assylbekov, P. N. Ratoff, T. Kutter, D. Autiero, T. Nakadaira, R. A. Johnson, Joshua Hignight, Anne Robert, Yoshihiro Suzuki, A. Konaka, Koji Yamamoto, T. Tsukamoto, P. Przewlocki, C. Pistillo, T. Hasegawa, O. V. Mineev, A. Gaudin, M. Hartz, B. Smith, E. Reinherz-Aronis, H. K. Tanaka, D. Payne, J. Adam, M. Friend, Teppei Katori, Yusuke Koshio, Lester D.R. Thompson, R. A. Wendell, C. W. Walter, S. Martynenko, E. Scantamburlo, Scott Davis, D. Hansen, A. Himmel, Y. Totsuka, J. Lagoda, T. Ishida, G. Christodoulou, Susumu Takahashi, M. A.M. Rayner, Leïla Haegel, C. Bojechko, Richard J.H. Smith, A. Kolaceke, M. R. Vagins, R.P. Kurjata, S. W. Bentham, P. Rojas, R. Terri, M. Barbi, V. Galymov, M. Mezzetto, S. Berkman, M. Zito, Hidekazu Kakuno, R. J. Wilson, S. Mine, Vincenzo Berardi, J. P. Coleman, I. Kreslo, S. J. Ives, R. Ohta, S. R. Johnson, D. Ruterbories, T. Wongjirad, D. Cherdack, M. Malek, I. Z. Danko, R. G. Calland, D. Gudin, G. De Rosa, M. B. Smy, K. Abe, R. Sacco, M. Lazos, A. Thorley, A. Korzenev, F. Shaker, S. A. Dytman, Koh Ueno, Y. Petrov, K. Sakashita, A. Murakami, Jan Kisiel, R. A. Owen, S. Moriyama, F. Bay, J. Marzec, Hidetoshi Kubo, A. N. Khotjantsev, D. Goeldi, S. Bordoni, T. Tomura, D. Naples, S. M. Oser, A. Hillairet, S. Short, N. C. Hastings, P. Plonski, C. McGrew, Tomoko Ariga, L. Koch, J.J. Gómez-Cadenas, T. Kobayashi, S. Di Luise, L. Cremonesi, M. Macaire, J. L. Palomino, Hiroyuki Sekiya, Rhiju Das, E. Mazzucato, Antonin Vacheret, C. Hearty, Y. Hayato, C. Andreopoulos, T. Szeglowski, B. Jamieson, E. L. Mathie, Masayuki Nakahata, M. Lawe, Y. Seiya, Y. Uchida, G. F. Pearce, P. de Perio, R. Tacik, O. Perevozchikov, Yoshikazu Yamada, Artur F. Izmaylov, M. Miura, K. P. Lee, Y. Fukuda, M. Tzanov, M. Ziembicki, C. J. Metelko, H. W. Sobel, T. Ishii, K. Ieki, J. Zalipska, J. Insler, Kendall Mahn, A. Longhin, J. Marteau, S. B. Boyd, Z. Williamson, Michal Dziewiecki, Yusuke Suda, C. Licciardi, D. Karlen, R. J. Wilkes, T. Yuan, K. E. Duffy, Iain Alexander Bertram, I. Taylor, C. K. Jung, D. Dewhurst, G. Vasseur, M. G. Catanesi, A. Cervera, V. Palladino, M. Kabirnezhad, J. Imber, B. Quilain, B. Still, Masato Shiozawa, C. Wilkinson, Marco Laveder, A. Haesler, D. Sgalaberna, S. Bhadra, S. L. Cartwright, K. Connolly, Seiko Hirota, T. Kikawa, M. Gonin, L. Escudero, K. Mavrokoridis, F. d. M. Blaszczyk, Stefan Schoppmann, A. Kilinski, Akitaka Ariga, Y. Kanazawa, Ko Okumura, W. Oryszczak, P. A. Rodrigues, D. Terhorst, E. Kearns, T. Okusawa, Jungsang Kim, Masashi Yokoyama, E. Poplawska, J. R. Wilson, C. Nielsen, S. Y. Suzuki, M. Ikeda, T. Duboyski, M. Bass, A. C. Kaboth, A. Mefodiev, Tsuyoshi Nakaya, Shigeki Aoki, L. Pickard, S. Giffin, C. Lister, V. Matveev, A. Blondel, K. Nishikawa, Jan T. Sobczyk, K. Laihem, Masashi Tanaka, A. P. Furmanski, K. Koseki, V. Paolone, A. Jacob, K. Iyogi, E. D. Zimmerman, E. Radicioni, D. L. Wark, G. A. Fiorentini Aguirre, T. Hara, A. D. Marino, S. R. Dennis, A. Bravar, P. Jonsson, D. Kielczewska, M. Batkiewicz, P. Sinclair, A. Dabrowska, T. Lindner, C. Densham, S. King, W. R. Kropp, S. Tobayama, K. Nakamura, D. R. Hadley, S. Horikawa, T. Wachala, F. Sanchez, E. Larkin, M. J. Wilking, J. Steinmann, W. H. Toki, B. E. Berger, L. Zambelli, Alexander Finch, C. Riccio, T. Dealtry, A. Missert, L. L. Kormos, F. Dufour, K. S. McFarland, K. Gilje, J. D. Perkin, M. Nirkko, M. Murdoch, S. Nakayama, S. Yen, T. Yano, S. Emery-Schrenk, D. Brailsford, Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), T2K, K., Abe, J., Adam, H. a., Aihara, T., Akiri, C., Andreopoulo, S., Aoki, A., Ariga, T., Ariga, S., Assylbekov, D., Autiero, M., Barbi, G., Barker, G., Barr, M., Ba, M., Batkiewicz, F., Bay, S., Bentham, V., Berardi, B. w., Berger, S., Berkman, I., Bertram, S., Bhadra, F., Blaszczyk, A., Blondel, C., Bojechko, S., Bordoni, S., Boyd, D., Brailsford, A., Bravar, C., Bronner, N., Buchanan, R., Calland, J. C., Rodr??????guez, S., Cartwright, R., Castillo, M., Catanesi, A., Cervera, D., Cherdack, G., Christodoulou, A., Clifton, J., Coleman, S., Coleman, G., Collazuol, K., Connolly, L., Cremonesi, A., Dabrowska, I., Danko, R., Da, S., Davi, P. D., Perio, DE ROSA, Gianfranca, T. a., Dealtry, S. b., Denni, C., Densham, D., Dewhurst, F. D., Lodovico, S. D., Luise, O., Drapier, T., Duboyski, K., Duffy, F., Dufour, J., Dumarchez, S., Dytman, M., Dziewiecki, S., Emery Schrenk, A., Ereditato, L., Escudero, A., Finch, G. F., Aguirre, M., Friend, Y., Fujii, Y., Fukuda, A., Furmanski, V., Galymov, A., Gaudin, S., Giffin, C., Giganti, K., Gilje, D., Goeldi, T., Golan, J., Gomez Cadena, M., Gonin, N., Grant, D., Gudin, D., Hadley, L., Haegel, A., Haesler, M., Haigh, P., Hamilton, D., Hansen, T., Hara, M. a., Hartz, T., Hasegawa, N., Hasting, Y. a., Hayato, C., Hearty, R., Helmer, M., Hierholzer, J., Hignight, A., Hillairet, A., Himmel, T., Hiraki, S., Hirota, J., Holeczek, S., Horikawa, K., Huang, A., Ichikawa, K., Ieki, M., Ieva, M., Ikeda, J., Imber, J., Insler, T., Irvine, T., Ishida, T., Ishii, S., Ive, E., Iwai, K., Iwamoto, K., Iyogi, A. v., Izmaylov, A., Jacob, B., Jamieson, R., Johnson, S., Johnson, J., Jo, P., Jonsson, C., Jung, M., Kabirnezhad, A., Kaboth, T., Kajita, H., Kakuno, J., Kameda, Y., Kanazawa, D. a., Karlen, I., Karpikov, T., Katori, E. w., Kearn, M., Khabibullin, A., Khotjantsev, D., Kielczewska, T., Kikawa, A., Kilinski, J., Kim, S., King, J., Kisiel, P., Kitching, T., Kobayashi, L., Koch, A., Kolaceke, A., Konaka, L., Kormo, A., Korzenev, K., Koseki, Y., Koshio, I., Kreslo, W., Kropp, H., Kubo, Y., Kudenko, S., Kumaratunga, R., Kurjata, T., Kutter, J., Lagoda, K., Laihem, I., Lamont, E., Larkin, M., Laveder, M., Lawe, M., Lazo, K., Lee, C., Licciardi, T., Lindner, C., Lister, R., Litchfield, A., Longhin, L., Ludovici, M., Macaire, L., Magaletti, K., Mahn, M., Malek, S., Manly, A., Marino, J., Marteau, J., Martin, S., Martynenko, T., Maruyama, J., Marzec, E., Mathie, V., Matveev, K., Mavrokoridi, E., Mazzucato, M., Mccarthy, N., Mccauley, K., Mcfarland, C., Mcgrew, A., Mefodiev, C., Metelko, M., Mezzetto, P., Mijakowski, C., Miller, A., Minamino, O., Mineev, S., Mine, A., Missert, M., Miura, L., Monfregola, S., Moriyama, T., Mueller, A., Murakami, M., Murdoch, S., Murphy, J., Myslik, T., Nagasaki, T., Nakadaira, M. a., Nakahata, T., Nakai, K. w., Nakamura, S., Nakayama, T. y., Nakaya, K., Nakayoshi, C., Nantai, D., Naple, C., Nielsen, M., Nirkko, K., Nishikawa, Y., Nishimura, J., Nowak, H., O'Keeffe, R., Ohta, K. a., Okumura, T., Okusawa, W., Oryszczak, S., Oser, T., Ovsyannikova, R., Owen, Y., Oyama, Palladino, Vittorio, J., Palomino, V., Paolone, D., Payne, G., Pearce, O., Perevozchikov, J., Perkin, Y., Petrov, L., Pickard, E. P., Guerra, C., Pistillo, P., Plonski, E., Poplawska, B., Popov, M., Posiadala Zezula, J., Poutissou, R., Poutissou, P., Przewlocki, B., Quilain, E., Radicioni, P., Ratoff, M., Ravonel, M., Rayner, A., Redij, M., Reeve, E., Reinherz Aroni, Riccio, Ciro, F., Retiere, A., Robert, P., Rodrigue, P., Roja, E., Rondio, S., Roth, A., Rubbia, D., Ruterborie, R., Sacco, K., Sakashita, F., S??????nchez, F., Sato, E., Scantamburlo, K., Scholberg, S., Schoppmann, J., Schwehr, M., Scott, Y., Seiya, T., Sekiguchi, H. a., Sekiya, D., Sgalaberna, F., Shaker, M. a., Shiozawa, S., Short, Y., Shustrov, P., Sinclair, B., Smith, R., Smith, M., Smy, J., Sobczyk, H. w., Sobel, M., Sorel, L., Southwell, P., Stamouli, J., Steinmann, B., Still, Y., Suda, A., Suzuki, K., Suzuki, S., Suzuki, Y., Suzuki, T., Szeglowski, R. a., Tacik, M., Tada, S., Takahashi, A., Takeda, Y. x., Takeuchi, H., Tanaka, M., Tanaka, I., Taylor, D., Terhorst, R., Terri, L., Thompson, A., Thorley, S., Tobayama, W., Toki, T., Tomura, Y., Totsuka, C., Touramani, T., Tsukamoto, M., Tzanov, Y., Uchida, K., Ueno, A., Vacheret, M. w., Vagin, G., Vasseur, T., Wachala, A., Waldron, C., Walter, D. a., Wark, M., Wascko, A. a., Weber, R., Wendell, R., Wilke, M., Wilking, C., Wilkinson, Z., Williamson, J., Wilson, R., Wilson, T., Wongjirad, Y., Yamada, K., Yamamoto, C., Yanagisawa, T., Yano, S., Yen, N., Yershov, M., Yokoyama, T., Yuan, M., Yu, A., Zalewska, J., Zalipska, L., Zambelli, K., Zaremba, M., Ziembicki, E., Zimmerman, M., Zito, J., Zmuda, Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)

Subjects
Nuclear and High Energy Physics, Cherenkov detector, Physics::Instrumentation and Detectors, C-12, FOS: Physical sciences, Astronomy & Astrophysics, law.invention, High Energy Physics - Experiment, Physics, Particles & Fields, Nuclear physics, SUPER-KAMIOKANDE DETECTOR, Cross section (physics), High Energy Physics - Experiment (hep-ex), law, EXCITATION, ABSORPTION, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], SCATTERING, O-16, Nuclear Experiment, Physics, CALIBRATION, Science & Technology, Neutral current, hep-ex, Gamma ray, T2K experiment, Física, 3. Good health, Physical Sciences, Neutrino, WEAK, Fiducial marker, Beam (structure)
Abstract

We report the first measurement of the neutrino-oxygen neutral-current quasielastic (NCQE) cross section. It is obtained by observing nuclear deexcitation $\gamma$-rays which follow neutrino-oxygen interactions at the Super-Kamiokande water Cherenkov detector. We use T2K data corresponding to $3.01 \times 10^{20}$ protons on target. By selecting only events during the T2K beam window and with well-reconstructed vertices in the fiducial volume, the large background rate from natural radioactivity is dramatically reduced. We observe 43 events in the $4-30$ MeV reconstructed energy window, compared with an expectation of 51.0, which includes an estimated 16.2 background events. The background is primarily nonquasielastic neutral-current interactions and has only 1.2 events from natural radioactivity. The flux-averaged NCQE cross section we measure is $1.55 \times 10^{-38}$ cm$^2$ with a 68\% confidence interval of $(1.22, 2.20) \times 10^{-38}$ cm$^2$ at a median neutrino energy of 630 MeV, compared with the theoretical prediction of $2.01 \times 10^{-38}$ cm$^2$., Comment: 10 pages, 6 figures

Published
2014
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13. Precise measurement of the neutrino mixing parameter θ23 from muon neutrino disappearance in an off-axis beam

Author

K. Mavrokoridis, F. d. M. Blaszczyk, Y. Kanazawa, S. Berkman, Robert Wilson, Viktor Matveev, L. Southwell, J. D. Perkin, T. J. Irvine, Henry W. Sobel, C. W. Walter, C. Yanagisawa, K. Nishikawa, S. Murphy, J. Myslik, T. Wachala, M. Nirkko, Oleg Mineev, T. Hara, T. Golan, Y. Yamada, Y. Fukuda, D. Autiero, Jan T. Sobczyk, J. L. Palomino, S. W. K. Emery, Gareth J. Barker, M. Hierholzer, M. Ziembicki, P. de Perio, K. Laihem, J. Zalipska, J. Insler, E. Radicioni, A. Murakami, A. Kilinski, A. Himmel, F. Retiere, Y. Totsuka, R. G. Calland, D. Gudin, Yusuke Koshio, S. L. Cartwright, S. M. Oser, A. Konaka, M. Lazos, M. A.M. Rayner, J. P. Coleman, Hiroyuki Sekiya, D. L. Wark, A. K. Ichikawa, S. Bordoni, T. Okusawa, Jungsang Kim, T. Nakai, S. Y. Suzuki, E. Rondio, M. Mezzetto, N. McCauley, S. Roth, E. S. Pinzon Guerra, Th. A. Mueller, Matthew T. Reeves, H. Kakuno, L. Ludovici, T. Wongjirad, S. Manly, K. Connolly, T. Szeglowski, Kendall Mahn, M. Ikeda, A. C. Kaboth, T. Kikawa, Masashi Tanaka, Y. Seiya, J. Schwehr, A. Robert, A. Izmaylov, A. P. Furmanski, Ken Sakashita, H. M. O'Keeffe, Takahiro Hiraki, A. Longhin, J. Marteau, A. Cervera, K. Suzuki, V. Paolone, K. Huang, J. Kameda, P. Przewlocki, Antonin Vacheret, W. R. Kropp, A. Jacob, A. D. Marino, Y. Takeuchi, K. Ieki, D. Karlen, S. R. Dennis, A. Bravar, R. J. Wilkes, D. Terhorst, J. Dumarchez, M. D. Haigh, A. Minamino, I. Lamont, P. Kitching, M. O. Wascko, V. Palladino, J. F. Martin, M. Tzanov, K. Ueno, Yusuke Suda, K. E. Duffy, Iain Alexander Bertram, E. Kearns, M. Kabirnezhad, C. J. Metelko, J. Imber, S. Moriyama, A. Suzuki, Masashi Yokoyama, D. Naples, Z. Williamson, S. Tobayama, E. Poplawska, P. Rojas, S. J. Coleman, Frédéric Dufour, Lester D.R. Thompson, K. Iyogi, R. J. Smith, D. Goeldi, A. Kolaceke, C. Touramanis, J. Adam, S. Di Luise, L. Cremonesi, D. Brailsford, P. Stamoulis, M. Murdoch, R. Poutissou, E. D. Zimmerman, S. Yen, M. Lawe, C. Wilkinson, M. B. Smy, M. Zito, M. Tada, D. Cherdack, P. Jonsson, M. Vagins, M. Malek, R. Ohta, D. R. Hadley, M. Bass, D. Ruterbories, F. Sato, R. Castillo, Yuichi Oyama, D. Sgalaberna, R. P. Litchfield, Antonio Ereditato, N. Yershov, J. Zmuda, K. Abe, R. Sacco, I. Kreslo, A. Redij, A. Zalewska, J. Holeczek, C. McGrew, L. Koch, S. Assylbekov, L. Floetotto, Scott Davis, D. Hansen, Y. Nishimura, S. J. Ives, P. Sinclair, C. A. Miller, Kevin Scott McFarland, G. De Rosa, C. Andreopoulos, M. Sorel, Takashi Kobayashi, B. Quilain, R. A. Owen, W. Toki, S. Nakayama, Hiroaki Aihara, Tsuyoshi Nakaya, R. A. Wendell, M. Ravonel, A. Blondel, S. Horikawa, Akitaka Ariga, M. Posiadala, M. G. Catanesi, C. Hearty, Marco Laveder, Vincenzo Berardi, P. N. Ratoff, Tomoko Ariga, Shigeki Aoki, T. Kutter, M. Macaire, G. Christodoulou, T. Tomura, K. Zaremba, A. V. Waldron, T. Nagasaki, T. Maruyama, S. Short, S. Dytman, Yoshinari Hayato, P. A. Rodrigues, L. Pickard, S. Giffin, G. Vasseur, N. C. Hastings, P. Plonski, T. Yuan, Masato Shiozawa, Atsushi Takeda, T. Duboyski, H. Kubo, T. Tsukamoto, E. L. Mathie, M. Friend, N. J. Buchanan, Joshua Hignight, Masayuki Nakahata, B. Still, Yoshihiro Suzuki, T. Nakadaira, Y. Uchida, J. Caravaca Rodríguez, J. H. Jo, J. R. Wilson, C. Nielsen, A. Haesler, H.A. Tanaka, M. J. Wilking, B. A. Popov, Seiko Hirota, G.D. Barr, S. Bhadra, M. Gonin, Stefan Schoppmann, S. B. Boyd, L. Escudero, M. Miura, M. Yu, C. Lister, J. M. Poutissou, C. Bronner, W. Oryszczak, K. P. Lee, Y. Petrov, J. Steinmann, P. Mijakowski, Kate Scholberg, C. K. Jung, D. Kielczewska, M. Batkiewicz, I. Karpikov, A. Dabrowska, M. Hartz, T. Lindner, C. Densham, T. Akiri, A. C. Weber, T. Hasegawa, S. Mine, N. Grant, G. Collazuol, Mark Scott, J. Marzec, R. Terri, K. Nakayoshi, R. L. Helmer, S. Kumaratunga, A. Thorley, A. Korzenev, Rhiju Das, B. Jamieson, T. Ishii, M. M. Khabibullin, O. Drapier, M. McCarthy, T. Ishida, Koji Nakamura, A. N. Khotjantsev, Y. Fujii, Kimihiro Okumura, M. Barbi, F. Bay, V. Galymov, Michal Dziewiecki, Kazuhiro Yamamoto, E. Mazzucato, L. L. Kormos, T. Sekiguchi, Takaaki Kajita, Y. Shustrov, A. Hillairet, Federico Sanchez, J. Kisiel, D. Payne, K. Gilje, Alexander Finch, André Rubbia, S. Takahashi, T. Dealtry, A. Missert, A. Clifton, R. A. Johnson, B. E. Berger, J. Lagoda, F. Di Lodovico, C. Bojechko, L. Zambelli, K. Koseki, M. Ieva, Yu. G. Kudenko, R. Tacik, O. Perevozchikov, Hajime Tanaka, L. Monfregola, P. Hamilton, L. Magaletti, C. Giganti, E. Iwai, C. Pistillo, B. Smith, E. Reinherz-Aronis, E. Scantamburlo, R.P. Kurjata, S. W. Bentham, I. Z. Danko, Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, T2K, Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), K., Abe, J., Adam, H. a., Aihara, T., Akiri, C., Andreopoulo, S., Aoki, A., Ariga, T., Ariga, S., Assylbekov, D., Autiero, M., Barbi, G., Barker, G., Barr, M., Ba, M., Batkiewicz, F., Bay, S., Bentham, V., Berardi, B., Berger, S., Berkman, I., Bertram, S., Bhadra, F., Blaszczyk, A., Blondel, C., Bojechko, S., Bordoni, S., Boyd, D., Brailsford, A., Bravar, C., Bronner, N., Buchanan, R., Calland, J. C., Rodr??????guez, S., Cartwright, R., Castillo, M., Catanesi, A., Cervera, D., Cherdack, G., Christodoulou, A., Clifton, J., Coleman, S., Coleman, G., Collazuol, K., Connolly, L., Cremonesi, A., Dabrowska, I., Danko, R., Da, S., Davi, P. D., Perio, DE ROSA, Gianfranca, T. a., Dealtry, S. b., Denni, C., Densham, F. D., Lodovico, S. D., Luise, O., Drapier, T., Duboyski, K., Duffy, F., Dufour, J., Dumarchez, S., Dytman, M., Dziewiecki, S., Emery, A., Ereditato, L., Escudero, A., Finch, L., Floetotto, M., Friend, Y., Fujii, Y., Fukuda, A., Furmanski, V., Galymov, S., Giffin, C., Giganti, K., Gilje, D., Goeldi, T., Golan, M., Gonin, N., Grant, D., Gudin, D., Hadley, A., Haesler, M., Haigh, P., Hamilton, D., Hansen, T., Hara, M. a., Hartz, T., Hasegawa, N., Hasting, Y., Hayato, C., Hearty, R., Helmer, M., Hierholzer, J., Hignight, A., Hillairet, A., Himmel, T., Hiraki, S., Hirota, J., Holeczek, S., Horikawa, K., Huang, A., Ichikawa, K., Ieki, M., Ieva, M., Ikeda, J., Imber, J., Insler, T., Irvine, T., Ishida, T., Ishii, S., Ive, E., Iwai, K., Iyogi, A. v., Izmaylov, A., Jacob, B., Jamieson, R., Johnson, J., Jo, P., Jonsson, C., Jung, M., Kabirnezhad, A., Kaboth, T., Kajita, H., Kakuno, J., Kameda, Y., Kanazawa, D. a., Karlen, I., Karpikov, E. w., Kearn, M., Khabibullin, A., Khotjantsev, D., Kielczewska, T., Kikawa, A., Kilinski, J., Kim, J., Kisiel, P., Kitching, T., Kobayashi, L., Koch, A., Kolaceke, A., Konaka, L., Kormo, A., Korzenev, K., Koseki, Y., Koshio, I., Kreslo, W., Kropp, H., Kubo, Y., Kudenko, S., Kumaratunga, R., Kurjata, T., Kutter, J., Lagoda, K., Laihem, I., Lamont, M., Laveder, M., Lawe, M., Lazo, K., Lee, T., Lindner, C., Lister, R., Litchfield, A., Longhin, L., Ludovici, M., Macaire, L., Magaletti, K., Mahn, M., Malek, S., Manly, A., Marino, J., Marteau, J., Martin, T., Maruyama, J., Marzec, E., Mathie, V., Matveev, K., Mavrokoridi, E., Mazzucato, M., Mccarthy, N., Mccauley, K., Mcfarland, C., Mcgrew, C., Metelko, M., Mezzetto, P., Mijakowski, C., Miller, A., Minamino, O., Mineev, S., Mine, A., Missert, M., Miura, L., Monfregola, S., Moriyama, T., Mueller, A., Murakami, M., Murdoch, S., Murphy, J., Myslik, T., Nagasaki, T., Nakadaira, M. a., Nakahata, T., Nakai, K. w., Nakamura, S., Nakayama, T. y., Nakaya, K., Nakayoshi, D., Naple, C., Nielsen, M., Nirkko, K., Nishikawa, Y., Nishimura, H., O'Keeffe, R., Ohta, K. a., Okumura, T., Okusawa, W., Oryszczak, S., Oser, R., Owen, Y., Oyama, Palladino, Vittorio, J., Palomino, V., Paolone, D., Payne, O., Perevozchikov, J., Perkin, Y., Petrov, L., Pickard, E. P., Guerra, C., Pistillo, P., Plonski, E., Poplawska, B., Popov, M., Posiadala, J., Poutissou, R., Poutissou, P., Przewlocki, B., Quilain, E., Radicioni, P., Ratoff, M., Ravonel, M., Rayner, A., Redij, M., Reeve, E., Reinherz Aroni, F., Retiere, A., Robert, P., Rodrigue, P., Roja, E., Rondio, S., Roth, A., Rubbia, D., Ruterborie, R., Sacco, K., Sakashita, F., S??????nchez, F., Sato, E., Scantamburlo, K., Scholberg, S., Schoppmann, J., Schwehr, M., Scott, Y., Seiya, T., Sekiguchi, H., Sekiya, D., Sgalaberna, M. a., Shiozawa, S., Short, Y., Shustrov, P., Sinclair, B., Smith, R., Smith, M., Smy, J., Sobczyk, H. w., Sobel, M., Sorel, L., Southwell, P., Stamouli, J., Steinmann, B., Still, Y., Suda, A., Suzuki, K., Suzuki, S., Suzuki, Y. a., Suzuki, T., Szeglowski, R. a., Tacik, M., Tada, S., Takahashi, A., Takeda, Y. x., Takeuchi, H., Tanaka, M., Tanaka, D., Terhorst, R., Terri, L., Thompson, A., Thorley, S., Tobayama, W., Toki, T., Tomura, Y., Totsuka, C., Touramani, T., Tsukamoto, M., Tzanov, Y., Uchida, K., Ueno, A., Vacheret, M. w., Vagin, G., Vasseur, T., Wachala, A., Waldron, C., Walter, D. a., Wark, M., Wascko, A. a., Weber, R., Wendell, R., Wilke, M., Wilking, C., Wilkinson, Z., Williamson, J., Wilson, R., Wilson, T., Wongjirad, Y., Yamada, K., Yamamoto, C., Yanagisawa, S., Yen, N., Yershov, M., Yokoyama, T., Yuan, M., Yu, A., Zalewska, J., Zalipska, L., Zambelli, K., Zaremba, M., Ziembicki, E., Zimmerman, M., Zito, J., Zmuda, and Science and Technology Facilities Council (STFC)

Subjects
Particle physics, General Physics, Physics, Multidisciplinary, MODELS, General Physics and Astronomy, FOS: Physical sciences, MASS, 01 natural sciences, 09 Engineering, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Physics and Astronomy (all), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], SCATTERING, Muon neutrino, 010306 general physics, Neutrino oscillation, DETECTOR, Mixing (physics), 01 Mathematical Sciences, Physics, Neutrons, Science & Technology, 02 Physical Sciences, 010308 nuclear & particles physics, Scattering, Oscillation, hep-ex, Física, T2K Collaboration, Physical Sciences, SYMMETRIES, High Energy Physics::Experiment, Neutrino, High energy physics, Mixing, Parameter estimation, Parameter extraction, Confidence limit, Energy dependent, Neutrino oscillations, Off-axis neutrino beam, Oscillation parameters, Oscillation probabilities, Precise measurements, Statistical uncertainty, Beam (structure), Energy (signal processing)
Abstract

New data from the T2K neutrino oscillation experiment produce the most precise measurement of the neutrino mixing parameter theta_{23}. Using an off-axis neutrino beam with a peak energy of 0.6 GeV and a data set corresponding to 6.57 x 10^{20} protons on target, T2K has fit the energy-dependent nu_mu oscillation probability to determine oscillation parameters. Marginalizing over the values of other oscillation parameters yields sin^2 (theta_{23}) = 0.514 +0.055/-0.056 (0.511 +- 0.055), assuming normal (inverted) mass hierarchy. The best-fit mass-squared splitting for normal hierarchy is Delta m^2_{32} = (2.51 +- 0.10) x 10^{-3} eV^2/c^4 (inverted hierarchy: Delta m^2_{13} = (2.48 +- 0.10) x 10^{-3} eV^2/c^4). Adding a model of multinucleon interactions that affect neutrino energy reconstruction is found to produce only small biases in neutrino oscillation parameter extraction at current levels of statistical uncertainty., Comment: 8 pages, 4 figures. Final version as published in PRL, with very minor changes from initial version in response to referee comments

Published
2014
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14. 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
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15. Upper bound on neutrino mass based on T2K neutrino timing measurements

Author

J. D. Perkin, A. Blondel, M. Nirkko, A. Rychter, M. A. M. Rayner, J. Adam, Robert Wilson, M. Mezzetto, D. Cherdack, Ken Sakashita, K. Abe, R. Sacco, Antonin Vacheret, W. R. Kropp, J. F. Martin, A. Minamino, M. Barbi, P. de Perio, Yusuke Suda, C. McGrew, K. E. Duffy, M. Tzanov, Yoshinari Hayato, C. J. Metelko, F. Bay, J. Imber, S. Moriyama, L. Koch, T. Hara, T. Feusels, M. B. Smy, M. Lawe, T. Duboyski, M. Ravonel, T. Ishii, M. Malek, Takahiro Hiraki, M. M. Khabibullin, G. A. Fiorentini, B. A. Popov, A. Kilinski, T. Wachala, C. Andreopoulos, S. Berkman, A. Suzuki, Viktor Matveev, A. Konaka, Michal Dziewiecki, Kazuhiro Yamamoto, G. Christodoulou, K. Suzuki, D. Shaw, O. Drapier, T. Okusawa, Jungsang Kim, S. Y. Suzuki, M. Ikeda, A. C. Kaboth, Kenichi Yoshida, Masashi Yokoyama, S. M. Oser, E. Poplawska, Scott Davis, D. Hansen, O. Perevozchikov, Yusuke Koshio, Y. Seiya, M. McCarthy, M. Murdoch, Y. Fukuda, D. Autiero, J. Schwehr, S. Yen, T. Yano, C. Yanagisawa, Y. Takeuchi, B. Quilain, C. A. Miller, Masayuki Nakahata, K. Nishikawa, D. Brailsford, Y. Uchida, Marco Laveder, R. Poutissou, B. E. Berger, P. Bartet-Friburg, T. Ishida, Jan T. Sobczyk, Kimihiro Okumura, R. Terri, A. Mefodiev, L. Southwell, J. Myslik, J. Yoo, A. Longhin, Takaaki Kajita, J. Marteau, Z. Williamson, K. Nakayoshi, S. Emery-Schrenk, D. Ruterbories, T. Golan, André Rubbia, Y. Shustrov, K. Zaremba, S. Bordoni, R. L. Helmer, S. Takahashi, K. Iwamoto, K. Huang, Atsushi Takeda, J. R. Wilson, A. K. Ichikawa, L. Zambelli, A. Redij, P. Rojas, L. Ludovici, J. L. Palomino, S. Roth, A. Cervera, T. J. Irvine, Henry W. Sobel, Federico Sanchez, P. Martins, S. King, V. Palladino, M. Kabirnezhad, T. Kikawa, Gareth J. Barker, Tsuyoshi Nakaya, M. Hierholzer, Kate Scholberg, E. S. Pinzon Guerra, Th. A. Mueller, C. Nielsen, Matthew T. Reeves, J. Dumarchez, M. Miura, L. L. Kormos, T. Tomura, A. Clifton, D. Payne, Masato Shiozawa, H. Kakuno, Hiroaki Aihara, P. N. Ratoff, T. Kutter, M. Hartz, H. M. O'Keeffe, Akitaka Ariga, S. B. Boyd, V. Galymov, T. Hayashino, W. Warzycha, S. Tobayama, K. Nakamura, Y. Petrov, J. Kisiel, R. A. Johnson, M. Friend, P. Kitching, M. O. Wascko, Teppei Katori, Shigeki Aoki, T. Sekiguchi, A. Haesler, A. Garcia, L. Pickard, A. Hillairet, S. Bhadra, Stefan Schoppmann, S. Martynenko, A. C. Weber, J. Lagoda, E. Kearns, K. Gilje, C. W. Walter, C. Lister, Alexander Finch, J. P. Coleman, S. Giffin, N. Chikuma, S. Manly, C. Bojechko, T. Koga, A. N. Khotjantsev, D. R. Hadley, M. D. Haigh, Y. Fujii, I. Lamont, P. Mijakowski, S. Bolognesi, T. Dealtry, M. Sorel, S. Horikawa, A. Missert, M. Ieva, R. A. Wendell, E. Mazzucato, F. Shaker, R. Tacik, Vincenzo Berardi, Hiroyuki Sekiya, S. Dytman, Kendall Mahn, K. Mavrokoridis, F. d. M. Blaszczyk, G. Vasseur, Masashi Tanaka, A. P. Furmanski, M. Posiadala-Zezula, N. Grant, A. Jacob, F. Sato, R. Castillo, Yuichi Oyama, K. Iyogi, R. P. Litchfield, E. D. Zimmerman, S. Assylbekov, H. Kubo, E. Larkin, Leïla Haegel, G. Collazuol, Mark Scott, Y. Kanazawa, A. Himmel, R. G. Calland, D. Gudin, M. Lazos, K. Ieki, D. Karlen, M. J. Wilking, Seiko Hirota, R. J. Wilkes, D. Dewhurst, M. Gonin, L. Escudero, J. Steinmann, C. Wilkinson, M. Zito, F. Di Lodovico, D. Sgalaberna, W. Oryszczak, C. K. Jung, D. Kielczewska, M. Batkiewicz, T. Tsukamoto, A. Dabrowska, S. Dolan, T. Lindner, Oleg Mineev, C. Densham, Yu. G. Kudenko, M. Ziembicki, J. Zalipska, J. Insler, J. Caravaca Rodríguez, H.A. Tanaka, P. Hamilton, J. Zmuda, L. Magaletti, C. Giganti, J. A. Nowak, E. Iwai, Y. Nishimura, M. Yu, C. Pistillo, J. M. Poutissou, C. Bronner, B. Smith, E. Reinherz-Aronis, E. Scantamburlo, P. A. Rodrigues, R.P. Kurjata, F. Hosomi, I. Z. Danko, J. P. Lopez, Y. Yamada, Joshua Hignight, Yoshihiro Suzuki, Y. Totsuka, T. Wongjirad, S. L. Cartwright, K. Connolly, D. Terhorst, P. Stamoulis, A. Zalewska, R. Shah, M. Vagins, G. De Rosa, R. A. Owen, J. Holeczek, T. Yuan, H. K. Tanaka, M. G. Catanesi, A. Murakami, V. Paolone, E. Rondio, N. McCauley, J. Kameda, P. Przewlocki, B. Still, Anatoly Kopylov, Lester D.R. Thompson, M. Bass, C. Hearty, C. Riccio, D. Goeldi, S. Di Luise, L. Cremonesi, K. G. Nakamura, T. Ovsyannikova, S. Murphy, S. R. Johnson, A. Thorley, A. Korzenev, Rhiju Das, B. Jamieson, T. Akiri, T. Hasegawa, R. Ohta, W. Toki, S. Nakayama, S. Short, N. C. Hastings, P. Plonski, A. Izmaylov, A. Kolaceke, S. J. Coleman, C. Touramanis, M. Jiang, Antonio Ereditato, N. Yershov, Kevin Scott McFarland, Takashi Kobayashi, T. Maruyama, T. Nakadaira, J. H. Jo, C. Nantais, G.D. Barr, K. Wakamatsu, I. Karpikov, N. J. Buchanan, S. R. Dennis, A. Bravar, M. Tada, P. Jonsson, P. Sinclair, E. Radicioni, D. L. Wark, A. D. Marino, Ministerio de Economía y Competitividad (España), Ministry of Education, Culture, Sports, Science and Technology (Japan), Natural Sciences and Engineering Research Council of Canada, Centre National de la Recherche Scientifique (France), Science and Technology Facilities Council (STFC), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), T2K, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Abe, K., Adam, J., Aihara, H., Akiri, T., Andreopoulos, C., Aoki, S., Ariga, A., Assylbekov, S., Autiero, D., Barbi, M., Barker, G. J., Barr, G., Bartet Friburg, P., Bass, M., Batkiewicz, M., Bay, F., Berardi, V., Berger, B. E., Berkman, S., Bhadra, S., Blaszczyk, F. D. M., Blondel, A., Bojechko, C., Bolognesi, S., Bordoni, S., Boyd, S. B., Brailsford, D., Bravar, A., Bronner, C., Buchanan, N., Calland, R. G., Caravaca Rodríguez, J., Cartwright, S. L., Castillo, R., Catanesi, M. G., Cervera, A., Cherdack, D., Chikuma, N., Christodoulou, G., Clifton, A., Coleman, J., Coleman, S. J., Collazuol, G., Connolly, K., Cremonesi, L., Dabrowska, A., Danko, I., Das, R., Davis, S., De Perio, P., DE ROSA, Gianfranca, Dealtry, T., Dennis, S. R., Densham, C., Dewhurst, D., Di Lodovico, F., Di Luise, S., Dolan, S., Drapier, O., Duboyski, T., Duffy, K., Dumarchez, J., Dytman, S., Dziewiecki, M., Emery Schrenk, S., Ereditato, A., Escudero, L., Feusels, T., Finch, A. J., Fiorentini, G. A., Friend, M., Fujii, Y., Fukuda, Y., Furmanski, A. P., Galymov, V., Garcia, A., Giffin, S., Giganti, C., Gilje, K., Goeldi, D., Golan, T., Gonin, M., Grant, N., Gudin, D., Hadley, D. R., Haegel, L., Haesler, A., Haigh, M. D., Hamilton, P., Hansen, D., Hara, T., Hartz, M., Hasegawa, T., Hastings, N. C., Hayashino, T., Hayato, Y., Hearty, C., Helmer, R. L., Hierholzer, M., Hignight, J., Hillairet, A., Himmel, A., Hiraki, T., Hirota, S., Holeczek, J., Horikawa, S., Hosomi, F., Huang, K., Ichikawa, A. K., Ieki, K., Ieva, M., Ikeda, M., Imber, J., Insler, J., Irvine, T. J., Ishida, T., Ishii, T., Iwai, E., Iwamoto, K., Iyogi, K., Izmaylov, A., Jacob, A., Jamieson, B., Jiang, M., Johnson, R. A., Johnson, S., Jo, J. H., Jonsson, P., Jung, C. K., Kabirnezhad, M., Kaboth, A. C., Kajita, T., Kakuno, H., Kameda, J., Kanazawa, Y., Karlen, D., Karpikov, I., Katori, T., Kearns, E., Khabibullin, M., Khotjantsev, A., Kielczewska, D., Kikawa, T., Kilinski, A., Kim, J., King, S., Kisiel, J., Kitching, P., Kobayashi, T., Koch, L., Koga, T., Kolaceke, A., Konaka, A., Kopylov, A., Kormos, L. L., Korzenev, A., Koshio, Y., Kropp, W., Kubo, H., Kudenko, Y., Kurjata, R., Kutter, T., Lagoda, J., Lamont, I., Larkin, E., Laveder, M., Lawe, M., Lazos, M., Lindner, T., Lister, C., Litchfield, R. P., Longhin, A., Lopez, J. P., Ludovici, L., Magaletti, L., Mahn, K., Malek, M., Manly, S., Marino, A. D., Marteau, J., Martin, J. F., Martins, P., Martynenko, S., Maruyama, T., Matveev, V., Mavrokoridis, K., Mazzucato, E., Mccarthy, M., Mccauley, N., Mcfarland, K. S., Mcgrew, C., Mefodiev, A., Metelko, C., Mezzetto, M., Mijakowski, P., Miller, C. A., Minamino, A., Mineev, O., Missert, A., Miura, M., Moriyama, S., Mueller, T. h. A., Murakami, A., Murdoch, M., Murphy, S., Myslik, J., Nakadaira, T., Nakahata, M., Nakamura, K. G., Nakamura, K., Nakayama, S., Nakaya, T., Nakayoshi, K., Nantais, C., Nielsen, C., Nirkko, M., Nishikawa, K., Nishimura, Y., Nowak, J., O'Keeffe, H. M., Ohta, R., Okumura, K., Okusawa, T., Oryszczak, W., Oser, S. M., Ovsyannikova, T., Owen, R. A., Oyama, Y., Palladino, Vittorio, Palomino, J. L., Paolone, V., Payne, D., Perevozchikov, O., Perkin, J. D., Petrov, Y., Pickard, L., Pinzon Guerra, E. S., Pistillo, C., Plonski, P., Poplawska, E., Popov, B., Posiadala Zezula, M., Poutissou, J. M., Poutissou, R., Przewlocki, P., Quilain, B., Radicioni, E., Ratoff, P. N., Ravonel, M., Rayner, M. A. M., Redij, A., Reeves, M., Reinherz Aronis, E., Riccio, Ciro, Rodrigues, P. A., Rojas, P., Rondio, E., Roth, S., Rubbia, A., Ruterbories, D., Rychter, A., Sacco, R., Sakashita, K., Sánchez, F., Sato, F., Scantamburlo, E., Scholberg, K., Schoppmann, S., Schwehr, J., Scott, M., Seiya, Y., Sekiguchi, T., Sekiya, H., Sgalaberna, D., Shah, R., Shaker, F., Shaw, D., Shiozawa, M., Short, S., Shustrov, Y., Sinclair, P., Smith, B., Smy, M., Sobczyk, J. T., Sobel, H., Sorel, M., Southwell, L., Stamoulis, P., Steinmann, J., Still, B., Suda, Y., Suzuki, A., Suzuki, K., Suzuki, S. Y., Suzuki, Y., Tacik, R., Tada, M., Takahashi, S., Takeda, A., Takeuchi, Y., Tanaka, H. K., Tanaka, H. A., Tanaka, M. M., Terhorst, D., Terri, R., Thompson, L. F., Thorley, A., Tobayama, S., Toki, W., Tomura, T., Totsuka, Y., Touramanis, C., Tsukamoto, T., Tzanov, M., Uchida, Y., Vacheret, A., Vagins, M., Vasseur, G., Wachala, T., Wakamatsu, K., Walter, C. W., Wark, D., Warzycha, W., Wascko, M. O., Weber, A., Wendell, R., Wilkes, R. J., Wilking, M. J., Wilkinson, C., Williamson, Z., Wilson, J. R., Wilson, R. J., Wongjirad, T., Yamada, Y., Yamamoto, K., Yanagisawa, C., Yano, T., Yen, S., Yershov, N., Yokoyama, M., Yoo, J., Yoshida, K., Yuan, T., Yu, M., Zalewska, A., Zalipska, J., Zambelli, L., Zaremba, K., Ziembicki, M., Zimmerman, E. D., Zito, M., and Zmuda, J.

Subjects
Physics - Instrumentation and Detectors, Physics and Astronomy (miscellaneous), Physics::Instrumentation and Detectors, BEAM, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Physics, Particles & Fields, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], AXIS, Nuclear Experiment (nucl-ex), Nuclear Experiment, Borexino, Physics, Large Hadron Collider, Instrumentation and Detectors (physics.ins-det), Nuclear & Particles Physics, Electron neutrino, High Energy Physics - Phenomenology, ELECTRON NEUTRINO, Physical Sciences, Neutrino, Nuclear and High Energy Physics, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Library science, Muon velocities, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Astronomy & Astrophysics, ANTINEUTRINO, Nuclear physics, 0202 Atomic, Molecular, Nuclear, Particle And Plasma Physics, 0103 physical sciences, BOREXINO, Early career, 010306 general physics, DETECTOR, 0206 Quantum Physics, SN-1987A, Science & Technology, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, DESY, Detector, Double beta decay, 0201 Astronomical And Space Sciences, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], MUON VELOCITIES, High Energy Physics::Experiment, DOUBLE-BETA DECAY
Abstract

The Tokai to Kamioka (T2K) long-baseline neutrino experiment consists of a muon neutrino beam, produced at the J-PARC accelerator, a near detector complex and a large 295-km-distant far detector. The present work utilizes the T2K event timing measurements at the near and far detectors to study neutrino time of flight as a function of derived neutrino energy. Under the assumption of a relativistic relation between energy and time of flight, constraints on the neutrino rest mass can be derived. The sub-GeV neutrino beam in conjunction with timing precision of order tens of ns provide sensitivity to neutrino mass in the few MeV/c(2) range. We study the distribution of relative arrival times of muon and electron neutrino candidate events at the T2K far detector as a function of neutrino energy. The 90% C.L. upper limit on the mixture of neutrino mass eigenstates represented in the data sample is found to be m(v)(2) < 5.6 MeV2/c(4)., 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
2016
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16. Study of TeV neutrinos with upward showering muons in Super-Kamiokande

Author

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

Subjects
Physics, Muon, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Bremsstrahlung, Astronomy and Astrophysics, High Energy Physics - Experiment, Nuclear physics, Pair production, WIMP, High Energy Physics::Experiment, Neutrino, Astrophysics - High Energy Astrophysical Phenomena, Super-Kamiokande, Neutrino oscillation, Zenith
Abstract

A subset of neutrino-induced upward through-going muons in the Super-Kamiokande detector consists of high energy muons which lose energy through radiative processes such as bremsstrahlung, e^{+} e^{-} pair production and photonuclear interactions. These ``upward showering muons'' comprise an event sample whose mean parent neutrino energy is approximately 1 TeV. We show that the zenith angle distribution of upward showering muons is consistent with negligible distortion due to neutrino oscillations, as expected of such a high-energy neutrino sample. We present astronomical searches using these high energy events, such as those from WIMP annihilations in the Sun, Earth and Galactic Center, some suspected point sources, as well as searches for diffuse flux from the interstellar medium., Comment: Submitted for publication to Astroparticle Physics. Fig 12 has slightly higher resolution in the version submitted to the journal

Published
2008
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17. Solar neutrinos: real-time experiments

Author

Y. Totsuka

Subjects
Nuclear physics, Physics, Massless particle, History and Philosophy of Science, Neutrino detector, Solar energetic particles, General Neuroscience, Solar neutrino, Fermion, Neutrino, Solar physics, General Biochemistry, Genetics and Molecular Biology, Background radiation
Published
2015

18. Evidence of Electron Neutrino Appearance in a Muon Neutrino Beam

Author

Scott Davis, D. Hansen, S. J. Ives, K. Zaremba, C. A. Miller, K. Ieki, D. Karlen, Takahiro Hiraki, K. Huang, Atsushi Takeda, C. W. Walter, R. J. Wilkes, K. P. Lee, M. Day, A. Longhin, M. Barbi, E. Radicioni, J. Marteau, D. Naples, T. Sekiguchi, A. Hillairet, Z. Williamson, S. Manly, C. Wilkinson, D. Sgalaberna, T. Nakai, D. Cherdack, H. Kaji, T. Tomura, D. L. Wark, J. Åmuda, B. E. Berger, L. Zambelli, C. Yanagisawa, F. Bay, M. Miura, M. Y. Pac, B. A. Popov, K. Abe, R. Sacco, E. Rondio, T. Nicholls, Robert Wilson, C. McGrew, E. L. Mathie, N. McCauley, S. Tobayama, M. Messina, Gareth J. Barker, M. Hierholzer, Y. Petrov, T. Hara, V. Galymov, C. Andreopoulos, M. Mezzetto, R. Ohta, A. Konaka, A. Laing, D. R. Hadley, B. Smith, Michal Dziewiecki, S. B. Boyd, Masashi Tanaka, J. Kameda, Dmitriy Beznosko, E. Reinherz-Aronis, T. J. Irvine, P. Przewlocki, A. P. Furmanski, A. D. Marino, Ken Sakashita, Kazuhiro Yamamoto, Henry W. Sobel, S. Horikawa, J. Lagoda, A. Kilinski, E. Scantamburlo, M. Ravonel, S. Dytman, S. M. Oser, Y. Fukuda, Hiroyuki Sekiya, T. Szeglowski, R.P. Kurjata, S. W. Bentham, J. P. Coleman, M. Bass, W. Toki, H. Kubo, S. Nakayama, C. Bojechko, Kate Scholberg, Y. Seiya, A. V. Waldron, T. Nagasaki, A. Blondel, Lester D.R. Thompson, Alexander Finch, J. D. Perkin, M. Szeptycka, P. A. Rodrigues, I. Z. Danko, A. Jacob, S. J. Coleman, Seiko Hirota, Takaaki Kajita, G. D. Lopez, Y. Shustrov, Kendall Mahn, M. Gonin, J. Dobson, G. Christodoulou, E. Mazzucato, D. Autiero, L. Escudero, J. Schwehr, Koh Ueno, F. Di Lodovico, G. F. Pearce, T. Okusawa, Jungsang Kim, M. J. Wilking, C. Touramanis, Antonio Ereditato, N. Yershov, M. Hartz, W. Oryszczak, Joshua Hignight, Antonin Vacheret, W. R. Kropp, Yu. G. Kudenko, S. Y. Suzuki, Masato Shiozawa, Yoshihiro Suzuki, J. Caravaca Rodríguez, K. Iyogi, M. Ikeda, A. C. Kaboth, S. Short, J. P. A. M. de André, N. C. Hastings, P. Plonski, S. Murphy, Kevin Scott McFarland, Takashi Kobayashi, J. F. Martin, M. Tzanov, C. J. Metelko, Federico Sanchez, K. Suzuki, C. Hearty, Y. Takeuchi, L. Southwell, J. Myslik, R. Castillo, Yuichi Oyama, A. Haesler, L. Monfregola, P. Hamilton, A. Murakami, D. Payne, L. Ludovici, Richard J.H. Smith, N. J. Buchanan, M. Lawe, E. D. Zimmerman, Y. Totsuka, M. A.M. Rayner, S. R. Dennis, A. Bravar, T. Wongjirad, T. Golan, T. Akiri, T. Hasegawa, S. Mine, L. Magaletti, C. Giganti, M. Nirkko, Yoshinari Hayato, Iain Alexander Bertram, Masayuki Nakahata, J. Imber, S. Moriyama, Y. Uchida, R. P. Litchfield, S. Assylbekov, T. Dealtry, Minoru Otani, A. Missert, T. Duboyski, F. Retiere, S. Bhadra, M. Ieva, K. Kowalik, M. D. Haigh, C. Licciardi, A. Marchionni, K. Nakajima, M. Tada, H.A. Tanaka, P. Mijakowski, M. B. Smy, J. Steinmann, Koji Nakamura, A. N. Khotjantsev, C. K. Jung, P. Jonsson, I. Taylor, S. W. K. Emery, Y. Fujii, M. Vagins, T. Kikawa, D. Brailsford, M. Shibata, D. Ruterbories, R. Tacik, O. Perevozchikov, J. Marzec, A. Himmel, R. Poutissou, S. Di Luise, R. G. Calland, B. Quilain, D. Kielczewska, M. Batkiewicz, A. Robert, D. Gudin, P. Sinclair, P. Masliah, A. Dabrowska, L. Cremonesi, T. McLachlan, A. Curioni, T. Ishii, T. Maruyama, J. Holeczek, M. Lazos, J. Dumarchez, A. Izmaylov, S. Berkman, T. Nakadaira, M. M. Khabibullin, J. H. Jo, J. R. Wilson, C. Nielsen, Hiroaki Aihara, E. Frank, Marco Laveder, A. K. Ichikawa, P. N. Ratoff, T. Kutter, F. Khanam, M. Dziomba, G.D. Barr, O. Drapier, V. Paolone, Viktor Matveev, S. Roth, E. S. Pinzon Guerra, S. B. Kim, P. de Perio, Th. A. Mueller, J. M. Poutissou, C. Bronner, J. Y. Kim, Matthew T. Reeves, A. Kolaceke, T. Ishida, T. Lindner, Y. Obayashi, M. Friend, C. Densham, M. Posiadala, M. G. Catanesi, M. M. Tanaka, H. Kakuno, I. Karpikov, Yukika Nishimura, H. M. O'Keeffe, A. Suzuki, K. K. Joo, T. Wachala, B. Still, P. Kitching, M. O. Wascko, Masashi Yokoyama, E. Kearns, E. Poplawska, André Rubbia, Yusuke Koshio, M. Murdoch, S. Yen, Tsuyoshi Nakaya, S. Takahashi, Justin Albert, N. Abgrall, C. Lister, Y. Yamada, A. Clifton, M. Sorel, R. A. Wendell, S. L. Cartwright, R. A. Johnson, K. Connolly, Vincenzo Berardi, A. Cervera, V. Palladino, D. Terhorst, Tomoko Ariga, P. Stamoulis, A. Gaudin, A. Zalewska, G. Kogan, G. De Rosa, R. A. Owen, J.J. Gómez-Cadenas, M. Macaire, G. Vasseur, T. Yuan, Frédéric Dufour, I. T. Lim, Akitaka Ariga, Shigeki Aoki, Oleg Mineev, S. Giffin, L. L. Kormos, M. Ziembicki, J. Kisiel, A. C. Weber, N. Grant, G. Collazuol, Mark Scott, J. Insler, M. Zito, I. Kreslo, K. Gilje, T. Tsukamoto, K. Nishikawa, Kimihiro Okumura, Jan T. Sobczyk, K. Laihem, D. G. Brook-Roberge, K. Koseki, A. Minamino, K. Mavrokoridis, F. d. M. Blaszczyk, Y. Kanazawa, M. Malek, B. Kirby, R. Terri, K. Nakayoshi, R. L. Helmer, S. Kumaratunga, D. I. Scully, A. Thorley, A. Korzenev, Rhiju Das, B. Jamieson, Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, 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), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), T2K, Centro Nacional de Física de Partículas, Astropartículas y Nuclear (España), Ministerio de Economía y Competitividad (España), Ministry of Education, Culture, Sports, Science and Technology (Japan), Natural Sciences and Engineering Research Council of Canada, German Research Foundation, Ministry of Science and Higher Education (Poland), Russian Foundation for Basic Research, National Research Foundation of Korea, Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Abgrall, Nicolas, Blondel, Alain, Bravar, Alessandro, Dufour, Fanny, Haesler, Alexis, Korzenev, Alexander, Murphy, Sébastien, Ravonel Salzgeber, Melody, Rayner, Mark, Scantamburlo, Enrico, K., Abe, N., Abgrall, H., Aihara, T., Akiri, J. B., Albert, C., Andreopoulo, S., Aoki, A., Ariga, T., Ariga, S., Assylbekov, D., Autiero, M., Barbi, G. J., Barker, G., Barr, M., Ba, M., Batkiewicz, F., Bay, S. W., Bentham, V., Berardi, B. E., Berger, S., Berkman, I., Bertram, D., Beznosko, S., Bhadra, F. d. M., Blaszczyk, A., Blondel, C., Bojechko, S., Boyd, D., Brailsford, A., Bravar, C., Bronner, D. G., Brook Roberge, N., Buchanan, R. G., Calland, J., Caravaca Rodr?guez, S. L., Cartwright, R., Castillo, M. G., Catanesi, A., Cervera, D., Cherdack, G., Christodoulou, A., Clifton, J., Coleman, S. J., Coleman, G., Collazuol, K., Connolly, L., Cremonesi, A., Curioni, A., Dabrowska, I., Danko, R., Da, S., Davi, M., Day, J. P. A. M., de Andr?, P., de Perio, DE ROSA, Gianfranca, T., Dealtry, S., Denni, C., Densham, F., Di Lodovico, S., Di Luise, J., Dobson, O., Drapier, T., Duboyski, F., Dufour, J., Dumarchez, S., Dytman, M., Dziewiecki, M., Dziomba, S., Emery, A., Ereditato, L., Escudero, A. J., Finch, E., Frank, M., Friend, Y., Fujii, Y., Fukuda, A., Furmanski, V., Galymov, A., Gaudin, S., Giffin, C., Giganti, K., Gilje, T., Golan, J. J., Gomez Cadena, M., Gonin, N., Grant, D., Gudin, D. R., Hadley, A., Haesler, M. D., Haigh, P., Hamilton, D., Hansen, T., Hara, M., Hartz, T., Hasegawa, N. C., Hasting, Y., Hayato, C., Hearty, R. L., Helmer, M., Hierholzer, J., Hignight, A., Hillairet, A., Himmel, T., Hiraki, S., Hirota, J., Holeczek, S., Horikawa, K., Huang, A. K., Ichikawa, K., Ieki, M., Ieva, M., Ikeda, J., Imber, J., Insler, T. J., Irvine, T., Ishida, T., Ishii, S. J., Ive, K., Iyogi, A., Izmaylov, A., Jacob, B., Jamieson, R. A., Johnson, J. H., Jo, P., Jonsson, K. K., Joo, C. K., Jung, A., Kaboth, H., Kaji, T., Kajita, H., Kakuno, J., Kameda, Y., Kanazawa, D., Karlen, I., Karpikov, E., Kearn, M., Khabibullin, F., Khanam, A., Khotjantsev, D., Kielczewska, T., Kikawa, A., Kilinski, J. Y., Kim, J., Kim, S. B., Kim, B., Kirby, J., Kisiel, P., Kitching, T., Kobayashi, G., Kogan, A., Kolaceke, A., Konaka, L. L., Kormo, A., Korzenev, K., Koseki, Y., Koshio, K., Kowalik, I., Kreslo, W., Kropp, H., Kubo, Y., Kudenko, S., Kumaratunga, R., Kurjata, T., Kutter, J., Lagoda, K., Laihem, A., Laing, M., Laveder, M., Lawe, M., Lazo, K. P., Lee, C., Licciardi, I. T., Lim, T., Lindner, C., Lister, R. P., Litchfield, A., Longhin, G. D., Lopez, L., Ludovici, M., Macaire, L., Magaletti, K., Mahn, M., Malek, S., Manly, A., Marchionni, A. D., Marino, J., Marteau, J. F., Martin, T., Maruyama, J., Marzec, P., Masliah, E. L., Mathie, V., Matveev, K., Mavrokoridi, E., Mazzucato, N., Mccauley, K. S., Mcfarland, C., Mcgrew, T., Mclachlan, M., Messina, C., Metelko, M., Mezzetto, P., Mijakowski, C. A., Miller, A., Minamino, O., Mineev, S., Mine, A., Missert, M., Miura, L., Monfregola, S., Moriyama, Mueller, T. h. A., A., Murakami, M., Murdoch, S., Murphy, J., Myslik, T., Nagasaki, T., Nakadaira, M., Nakahata, T., Nakai, K., Nakajima, K., Nakamura, S., Nakayama, T., Nakaya, K., Nakayoshi, D., Naple, T. C., Nicholl, C., Nielsen, M., Nirkko, K., Nishikawa, Y., Nishimura, H. M., O?keeffe, Y., Obayashi, R., Ohta, K., Okumura, T., Okusawa, W., Oryszczak, S. M., Oser, M., Otani, R. A., Owen, Y., Oyama, M. Y., Pac, Palladino, Vittorio, V., Paolone, D., Payne, G. F., Pearce, O., Perevozchikov, J. D., Perkin, Y., Petrov, E. S., Pinzon Guerra, P., Plonski, E., Poplawska, B., Popov, M., Posiadala, J. M., Poutissou, R., Poutissou, P., Przewlocki, B., Quilain, E., Radicioni, P. N., Ratoff, M., Ravonel, M. A. M., Rayner, M., Reeve, E., Reinherz Aroni, F., Retiere, A., Robert, P. A., Rodrigue, E., Rondio, S., Roth, A., Rubbia, D., Ruterborie, R., Sacco, K., Sakashita, F., S?nchez, E., Scantamburlo, K., Scholberg, J., Schwehr, M., Scott, D. I., Scully, Y., Seiya, T., Sekiguchi, H., Sekiya, D., Sgalaberna, M., Shibata, M., Shiozawa, S., Short, Y., Shustrov, P., Sinclair, B., Smith, R. J., Smith, M., Smy, J. T., Sobczyk, H., Sobel, M., Sorel, L., Southwell, P., Stamouli, J., Steinmann, B., Still, A., Suzuki, K., Suzuki, S. Y., Suzuki, Y., Suzuki, T., Szeglowski, M., Szeptycka, R., Tacik, M., Tada, S., Takahashi, A., Takeda, Y., Takeuchi, H. A., Tanaka, M. M., Tanaka, M., Tanaka, I. J., Taylor, D., Terhorst, R., Terri, L. F., Thompson, A., Thorley, S., Tobayama, W., Toki, T., Tomura, Y., Totsuka, C., Touramani, T., Tsukamoto, M., Tzanov, Y., Uchida, K., Ueno, A., Vacheret, M., Vagin, G., Vasseur, T., Wachala, A. V., Waldron, C. W., Walter, D., Wark, M. O., Wascko, A., Weber, R., Wendell, R. J., Wilke, M. J., Wilking, C., Wilkinson, Z., Williamson, J. R., Wilson, R. J., Wilson, T., Wongjirad, Y., Yamada, K., Yamamoto, C., Yanagisawa, S., Yen, N., Yershov, M., Yokoyama, T., Yuan, A., Zalewska, L., Zambelli, K., Zaremba, M., Ziembicki, E. D., Zimmerman, M., Zito, and J., ?muda

Subjects
Nuclear and High Energy Physics, Particle physics, Physics::Instrumentation and Detectors, FOS: Physical sciences, Flux, ddc:500.2, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Pion, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Momentum range, Muon neutrino, 010306 general physics, Neutrino oscillation, Physics, 010308 nuclear & particles physics, T2K experiment, Física, High Energy Physics::Experiment, Neutrino, Absorption cross-sections, Electron neutrino, Beam (structure)
Abstract

The T2K Collaboration reports evidence for electron neutrino appearance at the atmospheric mass splitting, vertical bar Delta m(32)(2)vertical bar approximate to 2.4 X 10(-3) eV(2). An excess of electron neutrino interactions over background is observed from a muon neutrino beam with a peak energy of 0.6 GeV at the Super-Kamiokande (SK) detector 295 km from the beam's origin. Signal and background predictions are constrained by data from near detectors located 280 m from the neutrino production target. We observe 11 electron neutrino candidate events at the SK detector when a background of 3.3 +/- 0.4(syst) events is expected. The background-only hypothesis is rejected with a p value of 0.0009 (3.1 sigma), and a fit assuming nu(mu) -> nu(e) oscillations with sin (2)2 theta(23) = 1, delta(CP) = 0 and vertical bar Delta m(32)(2)vertical bar = 2.4 X 10(-3) eV(2) yields sin (2)2 theta(13) = 0.088(-0.039)(+0.049)(stat + syst)., We thank the J-PARC accelerator team for the superb accelerator performance and CERN NA61 colleagues for providing essential particle production data and for their fruitful collaboration. We acknowledge the support of MEXT, Japan; NSERC, NRC and CFI, Canada; CEA and CNRS/IN2P3, France; DFG, Germany; INFN, Italy; Ministry of Science and Higher Education, Poland; RAS, RFBR and the Ministry of Education and Science of the Russian Federation; MEST and NRF, South Korea; MICINN and CPAN, Spain; SNSF and SER, Switzerland; STFC, U.K.; NSF and DOE, USA We also thank CERN for their donation of the UA1/NOMAD magnet and DESY for the HERA-B magnet mover system. In addition, participation of individual researchers and institutions in T2K has been further supported by funds from ERC (FP7), EU; JSPS, Japan; Royal Society, UK; DOE Early Career program, and the A. P. Sloan Foundation, USA Computations were performed on the supercomputers at the SciNet [115] HPC Consortium. SciNet is funded by the Canada Foundation for Innovation under the auspices of Compute Canada; the Government of Ontario; Ontario Research Fund - Research Excellence; and the University of Toronto.

Published
2013
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19. Measurement of the Inclusive NuMu Charged Current Cross Section on Carbon in the Near Detector of the T2K Experiment

Author

J. R. Wilson, C. Nielsen, Justin Albert, N. Abgrall, C. Lister, F. Di Lodovico, T. Maruyama, R. A. Wendell, Vincenzo Berardi, Tomoko Ariga, G. Vasseur, J. H. Jo, J. Lagoda, M. Tada, C. Bojechko, R. J. Wilson, Alexander Finch, C. W. Walter, F. Khanam, G.D. Barr, Masashi Tanaka, A. P. Furmanski, V. Paolone, A. Jacob, K. Iyogi, E. D. Zimmerman, A. K. Ichikawa, L. Monfregola, S. Manly, P. Hamilton, S. R. Dennis, A. Bravar, M. Mezzetto, K. Ieki, M. Ieva, L. Magaletti, C. Giganti, S. Roth, J. Kameda, E. Kearns, D. Karlen, I. Karpikov, R. Tacik, O. Perevozchikov, M. Barbi, S. L. Cartwright, Hiroyuki Sekiya, R. J. Wilkes, T. Szeglowski, F. Bay, E. S. Pinzon Guerra, Y. Fukuda, Kendall Mahn, Akitaka Ariga, Michal Dziewiecki, K. Connolly, Th. A. Mueller, Ko Okumura, Y. Takeuchi, T. Dealtry, M. M. Tanaka, Antonin Vacheret, Masashi Yokoyama, Matthew T. Reeves, E. Poplawska, Minoru Otani, A. Missert, P. Guzowski, D. Ruterbories, C. Wilkinson, André Rubbia, Takaaki Kajita, G. D. Lopez, Y. Shustrov, M. Tzanov, P. Mijakowski, A. Zalewska, C. J. Metelko, D. Terhorst, D. Payne, D. Sgalaberna, Hiroaki Aihara, P. N. Ratoff, Shigeki Aoki, T. Kutter, K. Nakajima, M. Friend, P. Jonsson, J. Åmuda, B. E. Berger, B. Smith, E. Reinherz-Aronis, A. Clifton, C. Yanagisawa, E. Scantamburlo, M. J. Wilking, H. Kakuno, L. Zambelli, R.P. Kurjata, R. A. Johnson, Anne Robert, S. Giffin, S. W. Bentham, H. M. O'Keeffe, L. L. Kormos, K. K. Joo, T. Wachala, I. Z. Danko, M. B. Smy, Kazuhiro Suzuki, S. A. Dytman, Koh Ueno, V. Matveev, T. Akiri, K. S. McFarland, Tsuyoshi Nakaya, J. Steinmann, T. Hasegawa, Gareth J. Barker, M. Hierholzer, D. Naples, P. Sinclair, Yusuke Koshio, A. Hillairet, K. Gilje, C. K. Jung, P. Kitching, T. McLachlan, W. R. Kropp, M. O. Wascko, A. Konaka, S. Tobayama, J. Marzec, S. Emery, W. H. Toki, M. Ikeda, Dmitriy Beznosko, K. Nishikawa, Masato Shiozawa, Scott Davis, D. Hansen, A. Laing, D. R. Hadley, S. J. Coleman, S. Horikawa, Jan T. Sobczyk, J. P. Coleman, C. Touramanis, A. Haesler, F. Sanchez, S. J. Ives, Antonio Ereditato, N. Yershov, S. Bhadra, A. C. Weber, D. Brailsford, R. Poutissou, K. Laihem, P. Masliah, D. Kielczewska, M. Batkiewicz, P. Stamoulis, A. Dabrowska, Frédéric Dufour, T. Tomura, K. Koseki, E. L. Mathie, O. V. Mineev, A. Gaudin, A. T. Suzuki, J. F. Martin, S. B. Kim, N. Grant, D. G. Brook-Roberge, J. Y. Kim, G. Kogan, S. B. Boyd, G. Collazuol, Mark Scott, T. Lindner, G. De Rosa, D. Autiero, T. Nakadaira, Y. Obayashi, C. Densham, R. A. Owen, M. Zito, P. A. Rodrigues, A. Thorley, J.J. Gómez-Cadenas, M. Macaire, M. Szeptycka, A. Korzenev, M. Miura, M. Murdoch, S. Nakayama, S. Mine, S. Yen, T. Yuan, I. Kreslo, M. Dziomba, J. Caravaca Rodríguez, H.A. Tanaka, K. Kowalik, M. Posiadala, M. G. Catanesi, M. Y. Pac, Hidetoshi Kubo, M. R. Vagins, A. Blondel, Iain Alexander Bertram, Rhiju Das, J. Imber, J. M. Poutissou, C. Bronner, B. Jamieson, Yukika Nishimura, A. N. Khotjantsev, L. Southwell, J. Myslik, T. Duboyski, N. J. Buchanan, T. Golan, A. Murakami, C. A. Miller, Yu. Kudenko, A. Minamino, E. Radicioni, A. Himmel, R. G. Calland, D. Gudin, Yuki Fujii, K. Zaremba, D. L. Wark, Richard J.H. Smith, I. T. Lim, J. Holeczek, B. A. Popov, K. Huang, M. Malek, Atsushi Takeda, T. Hara, K. Mavrokoridis, J. Dumarchez, F. d. M. Blaszczyk, Y. Kanazawa, J. D. Perkin, J. Schwehr, A. D. Marino, M. Shibata, Kate Scholberg, A. Marchionni, M. Hartz, K. Nakayoshi, B. Kirby, Jan Kisiel, T. Nicholls, T. Nakai, Jing Wang, E. Rondio, T. Kobayashi, S. Di Luise, L. Cremonesi, N. McCauley, C. Hearty, A. Curioni, M. Ziembicki, J. Insler, P. Przewlocki, K. Sakashita, M. M. Khabibullin, R. L. Helmer, S. M. Oser, Lester D.R. Thompson, O. Drapier, Y. Seiya, S. Berkman, S. Kumaratunga, B. Still, R. Ohta, D. I. Scully, S. Short, J. P. A. M. de André, N. C. Hastings, P. Plonski, S. Murphy, F. Retiere, V. Palladino, T. Tsukamoto, A. Izmaylov, K. P. Lee, M. Day, M. Messina, A. Longhin, T. Ishida, A. Kolaceke, J. Marteau, Z. Williamson, A. V. Waldron, T. Nagasaki, J. Dobson, H. Kaji, T. Kikawa, M. Gonin, L. Escudero, Joshua Hignight, W. Oryszczak, D. Cherdack, K. Abe, R. Sacco, C. McGrew, Y. Hayato, C. Andreopoulos, T. Sekiguchi, L. Ludovici, M. Sorel, Yasunari Suzuki, M. D. Haigh, Y. Totsuka, Susumu Takahashi, Takahiro Hiraki, M. A.M. Rayner, T. Wongjirad, A. Kilinski, T. Ishii, P. de Perio, Yoshikazu Yamada, T. Okusawa, Jungsang Kim, S. Y. Suzuki, M. Bass, A. C. Kaboth, A. Cervera, R. Terri, M. Ravonel, M. Lawe, H. W. Sobel, C. Licciardi, G. Christodoulou, K. Nakamura, R. Castillo, Yuichi Oyama, R. P. Litchfield, I. Taylor, B. Quilain, S. Assylbekov, E. Frank, Marco Laveder, S. Moriyama, Koji Yamamoto, Masayuki Nakahata, Y. Uchida, T. J. Irvine, V. Galymov, E. Mazzucato, G. F. Pearce, Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), T2K, Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Ministerio de Economía y Competitividad (España), Centro Nacional de Física de Partículas, Astropartículas y Nuclear (España), Ministry of Education, Culture, Sports, Science and Technology (Japan), Abgrall, Nicolas, Blondel, Alain, Bravar, Alessandro, Dufour, Fanny, Haesler, Alexis, Korzenev, Alexander, Murphy, Sébastien, Ravonel Salzgeber, Melody, Rayner, Mark, Scantamburlo, Enrico, K., Abe, N., Abgrall, H., Aihara, T., Akiri, J. B., Albert, C., Andreopoulo, S., Aoki, A., Ariga, T., Ariga, S., Assylbekov, D., Autiero, M., Barbi, G. J., Barker, G., Barr, M., Ba, M., Batkiewicz, F., Bay, S. W., Bentham, V., Berardi, B. E., Berger, S., Berkman, I., Bertram, D., Beznosko, S., Bhadra, F. d. M., Blaszczyk, A., Blondel, C., Bojechko, S., Boyd, D., Brailsford, A., Bravar, C., Bronner, D. G., Brook Roberge, N., Buchanan, R. G., Calland, J., Caravaca Rodr?guez, S. L., Cartwright, R., Castillo, M. G., Catanesi, A., Cervera, D., Cherdack, G., Christodoulou, A., Clifton, J., Coleman, S. J., Coleman, G., Collazuol, K., Connolly, L., Cremonesi, A., Curioni, A., Dabrowska, I., Danko, R., Da, S., Davi, M., Day, J. P. A. M., de Andr?, P., de Perio, DE ROSA, Gianfranca, T., Dealtry, S. R., Denni, C., Densham, F., Di Lodovico, S., Di Luise, J., Dobson, O., Drapier, T., Duboyski, F., Dufour, J., Dumarchez, S., Dytman, M., Dziewiecki, M., Dziomba, S., Emery, A., Ereditato, L., Escudero, A. J., Finch, E., Frank, M., Friend, Y., Fujii, Y., Fukuda, A. P., Furmanski, V., Galymov, A., Gaudin, S., Giffin, C., Giganti, K., Gilje, T., Golan, J. J., Gomez Cadena, M., Gonin, N., Grant, D., Gudin, P., Guzowski, D. R., Hadley, A., Haesler, M. D., Haigh, P., Hamilton, D., Hansen, T., Hara, M., Hartz, T., Hasegawa, N. C., Hasting, Y., Hayato, C., Hearty, R. L., Helmer, M., Hierholzer, J., Hignight, A., Hillairet, A., Himmel, T., Hiraki, J., Holeczek, S., Horikawa, K., Huang, A. K., Ichikawa, K., Ieki, M., Ieva, M., Ikeda, J., Imber, J., Insler, T. J., Irvine, T., Ishida, T., Ishii, S. J., Ive, K., Iyogi, A., Izmaylov, A., Jacob, B., Jamieson, R. A., Johnson, J. H., Jo, P., Jonsson, K. K., Joo, C. K., Jung, A., Kaboth, H., Kaji, T., Kajita, H., Kakuno, J., Kameda, Y., Kanazawa, D., Karlen, I., Karpikov, E., Kearn, M., Khabibullin, F., Khanam, A., Khotjantsev, D., Kielczewska, T., Kikawa, A., Kilinski, J. Y., Kim, J., Kim, S. B., Kim, B., Kirby, J., Kisiel, P., Kitching, T., Kobayashi, G., Kogan, A., Kolaceke, A., Konaka, L. L., Kormo, A., Korzenev, K., Koseki, Y., Koshio, K., Kowalik, I., Kreslo, W., Kropp, H., Kubo, Y., Kudenko, S., Kumaratunga, R., Kurjata, T., Kutter, J., Lagoda, K., Laihem, A., Laing, M., Laveder, M., Lawe, K. P., Lee, C., Licciardi, I. T., Lim, T., Lindner, C., Lister, R. P., Litchfield, A., Longhin, G. D., Lopez, L., Ludovici, M., Macaire, L., Magaletti, K., Mahn, M., Malek, S., Manly, A., Marchionni, A. D., Marino, J., Marteau, J. F., Martin, T., Maruyama, J., Marzec, P., Masliah, E. L., Mathie, V., Matveev, K., Mavrokoridi, E., Mazzucato, N., Mccauley, K. S., Mcfarland, C., Mcgrew, T., Mclachlan, M., Messina, C., Metelko, M., Mezzetto, P., Mijakowski, C. A., Miller, A., Minamino, O., Mineev, S., Mine, A., Missert, M., Miura, L., Monfregola, S., Moriyama, Mueller, T. h. A., A., Murakami, M., Murdoch, S., Murphy, J., Myslik, T., Nagasaki, T., Nakadaira, M., Nakahata, T., Nakai, K., Nakajima, K., Nakamura, S., Nakayama, T., Nakaya, K., Nakayoshi, D., Naple, T. C., Nicholl, C., Nielsen, K., Nishikawa, Y., Nishimura, H. M., O?keeffe, Y., Obayashi, R., Ohta, K., Okumura, T., Okusawa, W., Oryszczak, S. M., Oser, M., Otani, R. A., Owen, Y., Oyama, M. Y., Pac, Palladino, Vittorio, V., Paolone, D., Payne, G. F., Pearce, O., Perevozchikov, J. D., Perkin, E. S., Pinzon Guerra, P., Plonski, E., Poplawska, B., Popov, M., Posiadala, J. M., Poutissou, R., Poutissou, P., Przewlocki, B., Quilain, E., Radicioni, P. N., Ratoff, M., Ravonel, M. A. M., Rayner, M., Reeve, E., Reinherz Aroni, F., Retiere, A., Robert, P. A., Rodrigue, E., Rondio, S., Roth, A., Rubbia, D., Ruterborie, R., Sacco, K., Sakashita, F., S?nchez, E., Scantamburlo, K., Scholberg, J., Schwehr, M., Scott, D. I., Scully, Y., Seiya, T., Sekiguchi, H., Sekiya, D., Sgalaberna, M., Shibata, M., Shiozawa, S., Short, Y., Shustrov, P., Sinclair, B., Smith, R. J., Smith, M., Smy, J. T., Sobczyk, H., Sobel, M., Sorel, L., Southwell, P., Stamouli, J., Steinmann, B., Still, A., Suzuki, K., Suzuki, S. Y., Suzuki, Y., Suzuki, T., Szeglowski, M., Szeptycka, R., Tacik, M., Tada, S., Takahashi, A., Takeda, Y., Takeuchi, H. A., Tanaka, M. M., Tanaka, M., Tanaka, I. J., Taylor, D., Terhorst, R., Terri, L. F., Thompson, A., Thorley, S., Tobayama, W., Toki, T., Tomura, Y., Totsuka, C., Touramani, T., Tsukamoto, M., Tzanov, Y., Uchida, K., Ueno, A., Vacheret, M., Vagin, G., Vasseur, T., Wachala, A. V., Waldron, C. W., Walter, J., Wang, D., Wark, M. O., Wascko, A., Weber, R., Wendell, R. J., Wilke, M. J., Wilking, C., Wilkinson, Z., Williamson, J. R., Wilson, R. J., Wilson, T., Wongjirad, Y., Yamada, K., Yamamoto, C., Yanagisawa, S., Yen, N., Yershov, M., Yokoyama, T., Yuan, A., Zalewska, L., Zambelli, K., Zaremba, M., Ziembicki, E. D., Zimmerman, M., Zito, and J., ?muda

Subjects
Nuclear and High Energy Physics, Higher education, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Neutrino reactions, Library science, FOS: Physical sciences, ddc:500.2, 01 natural sciences, 7. Clean energy, Neutrino scattering, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Early career, 010306 general physics, Nuclear Experiment, Physics, 010308 nuclear & particles physics, business.industry, 4. Education, Nuclear Targets, T2K experiment, Física, Russian federation, Christian ministry, Angular dependence, High Energy Physics::Experiment, business
Abstract

T2K has performed the first measurement of nu(mu) inclusive charged current interactions on carbon at neutrino energies of similar to 1 GeV where the measurement is reported as a flux-averaged double differential cross section in muon momentum and angle. The flux is predicted by the beam Monte Carlo and external data, including the results from the NA61/SHINE experiment. The data used for this measurement were taken in 2010 and 2011, with a total of 10.8 x 10(19) protons-on-target. The analysis is performed on 4485 inclusive charged current interaction candidates selected in the most upstream fine-grained scintillator detector of the near detector. The flux-averaged total cross section is (phi) = (6.91 +/- 0.13(stat) +/- 0.84(syst)) x 10(-39) cm(2)/nucleon for a mean neutrino energy of 0.85 GeV., We thank the J-PARC accelerator team for the superb accelerator performance and CERN NA61 colleagues for providing essential particle production data and for their fruitful collaboration. We acknowledge the support of MEXT, Japan; NSERC, NRC and CFI, Canada; CEA and CNRS/IN2P3, France; DFG, Germany; INFN, Italy; Ministry of Science and Higher Education, Poland; RAS, RFBR and the Ministry of Education and Science of the Russian Federation; MEST and NRF, South Korea; MICINN and CPAN, Spain; SNSF and SER, Switzerland; STFC, UK; NSF and DOE, USA. We also thank CERN for their donation of the UA1/NOMAD magnet and DESY for the HERA-B magnet mover system. In addition, participation of individual researchers and institutions in T2K has been further supported by funds from: ERC (FP7), EU; JSPS, Japan; Royal Society, UK; DOE Early Career program, and the A. P. Sloan Foundation, USA.

Published
2013
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20. T2K neutrino flux prediction

Author

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

Subjects
Nuclear and High Energy Physics, Particle physics, Physics::Instrumentation and Detectors, Solar neutrino, Astrophysics::High Energy Astrophysical Phenomena, ddc:500.2, Antiprotons, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Nuclear physics, Pions, 0103 physical sciences, Momentum range, Muon neutrino, 010306 general physics, Neutrino oscillation, Nuclear Experiment, QC, Physics, Gev-c, 010308 nuclear & particles physics, Particle-production, High Energy Physics::Phenomenology, T2K experiment, Física, Detector, Monitor, Solar neutrino problem, Nuclei, Neutrino detector, 13. Climate action, Measurements of neutrino speed, Physics::Accelerator Physics, High Energy Physics::Experiment, Neutrino, Protons, Absorption cross-sections, Particle Physics - Experiment
Abstract

The Tokai-to-Kamioka (T2K) experiment studies neutrino oscillations using an off-axismuon neutrino beam with a peak energy of about 0.6 GeV that originates at the Japan Proton Accelerator Research Complex accelerator facility. Interactions of the neutrinos are observed at near detectors placed at 280 m from the production target and at the far detector-Super-Kamiokande-located 295 km away. The flux prediction is an essential part of the successful prediction of neutrino interaction rates at the T2K detectors and is an important input to T2K neutrino oscillation and cross section measurements. A FLUKA and GEANT3-based simulation models the physical processes involved in the neutrino production, from the interaction of primary beam protons in the T2K target, to the decay of hadrons and muons that produce neutrinos. The simulation uses proton beam monitor measurements as inputs. The modeling of hadronic interactions is reweighted using thin target hadron production data, including recent charged pion and kaon measurements from the NA61/SHINE experiment. For the first T2K analyses the uncertainties on the flux prediction are evaluated to be below 15% near the flux peak. The uncertainty on the ratio of the flux predictions at the far and near detectors is less than 2% near the flux peak., We thank the J-PARC accelerator team for the superb accelerator performance and the J-PARC center for the continuous support of the T2K experiment. We are grateful to the NA61/SHINE collaboration and FLUKA team for their assistance to make our data-driven flux prediction. We acknowledge the support of MEXT, Japan; NSERC, NRC and CFI, Canada; CEA and CNRS/IN2P3, France; DFG, Germany; INFN, Italy; National Science Centre, Poland; RAS, RFBR and the Ministry of Education and Science of the Russian Federation; MEST and NRF, South Korea; MICINN and CPAN, Spain; SNSF and SER, Switzerland; STFC, U.K.; NSF and DOE, U.S.. We also thank CERN for their donation of the UA1/NOMAD magnet and DESY for the HERA-B magnet mover system. In addition, participation of individual researchers and institutions in T2K has been further supported by funds from: ERC (FP7), E.U.; JSPS, Japan; Royal Society, U.K.; DOE Early Career program; and the A.P. Sloan Foundation, U.S.

Published
2013

21. Search for Neutrinos from Annihilation of Captured Low-Mass Dark Matter Particles in the Sun by Super-Kamiokande

Author

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

Subjects
Physics, Particle physics, Atmospheric neutrinos, Annihilation, Muon, Physics::Instrumentation and Detectors, Dark matter, General Physics and Astronomy, Física, Surrounding rock, Coupling (probability), Elastic scattering cross sections, Low mass, Upper limits, Nuclear physics, Weakly interacting massive particles, WIMP, Dark matter particles, High Energy Physics::Experiment, Neutrino, Super-Kamiokande
Abstract

Artículo escrito por muchos autores, sólo se referencian el primero, los autores que firman como Universidad Autónoma de Madrid y el grupo de colaboración en el caso de que aparezca en el artículo, Super-Kamiokande (SK) can search for weakly interacting massive particles (WIMPs) by detecting neutrinos produced from WIMP annihilations occurring inside the Sun. In this analysis, we include neutrino events with interaction vertices in the detector in addition to upward-going muons produced in the surrounding rock. Compared to the previous result, which used the upward-going muons only, the signal acceptances for light (few-GeV/c2-200-GeV/c2) WIMPs are significantly increased. We fit 3903 days of SK data to search for the contribution of neutrinos from WIMP annihilation in the Sun. We found no significant excess over expected atmospheric-neutrino background and the result is interpreted in terms of upper limits on WIMP-nucleon elastic scattering cross sections under different assumptions about the annihilation channel. We set the current best limits on the spin-dependent WIMP-proton cross section for WIMP masses below 200 GeV/c2 (at 10 GeV/c2, 1.49×10-39 cm2 for χχ→bb¯ and 1.31×10-40 cm2 for χχ→τ+τ- annihilation channels), also ruling out some fraction of WIMP candidates with spin-independent coupling in the few-GeV/c2 mass range, The Super-Kamiokande experiment was built and has been operated with funding from the Japanese Ministry of Education, Culture, Sports, Science and Technology, the U.S. Department of Energy, and the U.S. National Science Foundation

Published
2015
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22. Search for Nucleon and Dinucleon Decays with an Invisible Particle and a Charged Lepton in the Final State at the Super-Kamiokande Experiment

Author

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

Subjects
Physics, Particle physics, High Energy Physics::Phenomenology, Confidence levels, General Physics and Astronomy, Nucleon decays, Física, FOS: Physical sciences, State (functional analysis), Super-Kamiokande experiment, Invisible particle, High Energy Physics - Experiment, Nuclear physics, Massless particle, High Energy Physics - Phenomenology, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Bound state, Particle, High Energy Physics::Experiment, Nucleon, Super-Kamiokande, Lepton
Abstract

Artículo escrito por muchos autores, sólo se referencian el primero, los autores que firman como Universidad Autónoma de Madrid y el grupo de colaboración en el caso de que aparezca en el artículo, Search results for nucleon decays p→e+X, p→μ+X, n→νγ (where X is an invisible, massless particle) as well as dinucleon decays np→e+ν, np→μ+ν, and np→τ+ν in the Super-Kamiokande experiment are presented. Using single-ring data from an exposure of 273.4 kton·yr, a search for these decays yields a result consistent with no signal. Accordingly, lower limits on the partial lifetimes of τp→e+X>7.9×1032yr, τp→μ+X>4.1×1032yr, τn→νγ>5.5×1032yr, τnp→e+ν>2.6×1032yr, τnp→μ+ν>2.2×1032yr, and τnp→τ+ν>2.9×1031yr at a 90% confidence level are obtained. Some of these searches are novel, The Super- Kamiokande experiment was built and has been operated with funding from the Japanese Ministry of Education, Culture, Sports, Science and Technology, the U.S. Department of Energy, and the U.S. National Science Foundation

Published
2015
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23. Measurement of the $\nu_{\mu}$ charged current quasi-elastic cross-section on carbon with the T2K on-axis neutrino beam

Author

Y. Nishimura, P. A. Rodrigues, C. A. Miller, E. Rondio, N. McCauley, A. Minamino, Joshua Hignight, Yoshihiro Suzuki, P. de Perio, Yoshikazu Yamada, K. Huang, T. Maruyama, P. Przewlocki, J. Caravaca Rodríguez, H.A. Tanaka, D. Brailsford, O. Drapier, M. Malek, A. Blondel, J. H. Jo, R. Poutissou, C. W. Walter, Anatoly Kopylov, Lester D.R. Thompson, P. Bartet-Friburg, A. Cervera, B. E. Berger, Masashi Tanaka, C. Nantais, V. Palladino, G.D. Barr, M. Kabirnezhad, K. Nishikawa, J. Holeczek, Jan T. Sobczyk, A. P. Furmanski, B. Quilain, M. Yu, T. Ovsyannikova, C. Pistillo, K. Nakayoshi, C. K. Jung, S. Berkman, S. Martynenko, Takaaki Kajita, J. Lagoda, T. Tomura, S. Murphy, J. M. Poutissou, C. Bronner, B. Smith, E. Reinherz-Aronis, R. L. Helmer, R. J. Wilson, A. Redij, Y. Shustrov, V. Paolone, K. Wakamatsu, Hiroyuki Sekiya, A. Jacob, L. Zambelli, I. Karpikov, S. King, B. Still, K. Iyogi, S. Bolognesi, M. R. Vagins, K. Iwamoto, P. Martins, E. Scantamburlo, P. Stamoulis, F. Sato, R. Castillo, Yuichi Oyama, Y. Fukuda, Kendall Mahn, M. Nirkko, R. P. Litchfield, M. Ravonel, A. Rychter, W. R. Kropp, O. V. Mineev, Masato Shiozawa, R.P. Kurjata, P. Rojas, M. Mezzetto, M. Ieva, Akitaka Ariga, Ko Okumura, E. D. Zimmerman, R. Shah, W. Warzycha, Shigeki Aoki, L. Pickard, S. Giffin, S. Assylbekov, Koji Yamamoto, J. P. Lopez, F. Hosomi, Susumu Takahashi, S. Tobayama, A. Zalewska, Federico Sanchez, Y. Takeuchi, I. Z. Danko, M. B. Smy, K. Abe, A. Murakami, Yu. Kudenko, V. Matveev, K. Nakamura, Takahiro Hiraki, M. A.M. Rayner, T. Wongjirad, S. Manly, G. De Rosa, Leïla Haegel, R. A. Owen, A. K. Ichikawa, S. Roth, J. Kameda, S. A. Dytman, K. Sakashita, A. Haesler, R. Tacik, O. Perevozchikov, D. Payne, S. J. Coleman, Antonin Vacheret, V. Galymov, M. Ikeda, S. Bhadra, S. M. Oser, T. Hayashino, C. Hearty, D. R. Hadley, M. M. Khabibullin, E. S. Pinzon Guerra, S. B. Boyd, Th. A. Mueller, A. Garcia, M. Miura, R. Ohta, Stefan Schoppmann, G. Christodoulou, M. Ziembicki, Matthew T. Reeves, M. Barbi, M. Tzanov, P. Mijakowski, J. Zalipska, J. Insler, T. Yuan, T. Sekiguchi, D. Ruterbories, S. Horikawa, C. J. Metelko, T. Ishii, Y. Seiya, T. Wachala, L. Ludovici, André Rubbia, S. Bordoni, C. Touramanis, R. Terri, E. Mazzucato, M. Jiang, S. Moriyama, M. Zito, T. J. Irvine, F. Bay, A. Hillairet, Hiroaki Aihara, H. M. O'Keeffe, S. R. Johnson, Antonio Ereditato, N. Yershov, P. N. Ratoff, Hidekazu Kakuno, M. Sorel, T. Kutter, R. A. Wendell, Masayuki Nakahata, M. McCarthy, A. Thorley, Y. Uchida, C. Riccio, S. L. Cartwright, A. Korzenev, Kevin Scott McFarland, Vincenzo Berardi, Kazuhiro Suzuki, C. Ferchichi, E. Larkin, T. Feusels, A. Longhin, M. Friend, K. Connolly, G. A. Fiorentini, S. Short, H. K. Tanaka, N. C. Hastings, P. Plonski, J. Marteau, Z. Williamson, Teppei Katori, L. L. Kormos, A. Clifton, M. J. Wilking, P. Kitching, K. Mavrokoridis, F. d. M. Blaszczyk, Michal Dziewiecki, M. G. Catanesi, K. Gilje, Alexander Finch, D. Shaw, T. Hasegawa, M. Lawe, Rhiju Das, H. W. Sobel, Y. Kanazawa, A. Konaka, L. Southwell, J. Myslik, Jan Kisiel, T. Dealtry, A. Missert, Artur F. Izmaylov, M. O. Wascko, D. Terhorst, J. D. Perkin, W. H. Toki, B. Jamieson, E. Kearns, T. Tsukamoto, D. Goeldi, T. Kobayashi, S. Di Luise, Yusuke Koshio, M. D. Haigh, L. Cremonesi, K. G. Nakamura, J. Steinmann, T. Golan, I. Lamont, Masashi Yokoyama, F. Di Lodovico, A. T. Suzuki, M. Murdoch, M. Tada, G. Vasseur, E. Poplawska, S. Nakayama, S. Yen, T. Yano, Marco Laveder, Hidetoshi Kubo, Kentaroh Yoshida, A. C. Weber, J. F. Martin, Yuki Fujii, D. Autiero, T. Nakadaira, P. Hamilton, J. Żmuda, K. Zaremba, Seiko Hirota, T. Ishida, T. Kikawa, D. Kielczewska, M. Batkiewicz, Yusuke Suda, L. Magaletti, C. Giganti, M. Gonin, L. Escudero, A. Dabrowska, J. A. Nowak, A. Kolaceke, E. Iwai, Atsushi Takeda, J. Dumarchez, K. E. Duffy, J. Schwehr, C. Yanagisawa, W. Oryszczak, J. Adam, A. Mefodiev, J. Yoo, N. Chikuma, D. Cherdack, J. Imber, R. Sacco, A. N. Khotjantsev, S. Dolan, T. Lindner, S. Emery-Schrenk, Scott Davis, D. Hansen, C. Densham, M. Posiadala-Zezula, N. Grant, J. L. Palomino, G. Collazuol, Mark Scott, Tsuyoshi Nakaya, Gareth J. Barker, M. Hierholzer, Y. Petrov, J. P. Coleman, A. Himmel, A. Kilinski, F. Shaker, B. A. Popov, R. G. Calland, D. Gudin, M. Lazos, N. J. Buchanan, Y. Totsuka, T. Okusawa, K. Ieki, Jungsang Kim, D. Karlen, S. Y. Suzuki, Kate Scholberg, R. J. Wilkes, M. Bass, A. C. Kaboth, M. Hartz, D. Dewhurst, C. Wilkinson, D. Sgalaberna, J. R. Wilson, C. Nielsen, C. Lister, T. Koga, E. Radicioni, D. L. Wark, C. McGrew, T. Hara, L. Koch, A. D. Marino, Y. Hayato, C. Andreopoulos, S. R. Dennis, A. Bravar, P. Jonsson, P. Sinclair, Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, 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), T2K, Ministerio de Economía y Competitividad (España), Ministry of Education, Culture, Sports, Science and Technology (Japan), Natural Sciences and Engineering Research Council of Canada, Centre National de la Recherche Scientifique (France), Royal Society (UK), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Abe, K., Adam, J., Aihara, H., Andreopoulos, C., Aoki, S., Ariga, A., Assylbekov, S., Autiero, D., Barbi, M., Barker, G. . j., Barr, G., Bartet Friburg, P., Bass, M., Batkiewicz, M., Bay, F., Berardi, V., Berger, B. . e., Berkman, S., Bhadra, S., Blaszczyk, F. . d. . m., Blondel, A., Bolognesi, S., Bordoni, S., Boyd, S. . b., Brailsford, D., Bravar, A., Bronner, C., Buchanan, N., Calland, R. . g., Caravaca Rodríguez, J., Cartwright, S. . l., Castillo, R., Catanesi, M. . g., Cervera, A., Cherdack, D., Chikuma, N., Christodoulou, G., Clifton, A., Coleman, J., Coleman, S. . j., Collazuol, G., Connolly, K., Cremonesi, L., Dabrowska, A., Danko, I., Das, R., Davis, S., de Perio, P., DE ROSA, Gianfranca, Dealtry, T., Dennis, S. . r., Densham, C., Dewhurst, D., Di Lodovico, F., Di Luise, S., Dolan, S., Drapier, O., Duffy, K., Dumarchez, J., Dytman, S., Dziewiecki, M., Emery Schrenk, S., Ereditato, A., Escudero, L., Ferchichi, C., Feusels, T., Finch, A. . j., Fiorentini, G. . a., Friend, M., Fujii, Y., Fukuda, Y., Furmanski, A. . p., Galymov, V., Garcia, A., Giffin, S., Giganti, C., Gilje, K., Goeldi, D., Golan, T., Gonin, M., Grant, N., Gudin, D., Hadley, D. . r., Haegel, L., Haesler, A., Haigh, M. . d., Hamilton, P., Hansen, D., Hara, T., Hartz, M., Hasegawa, T., Hastings, N. . c., Hayashino, T., Hayato, Y., Hearty, C., Helmer, R. . l., Hierholzer, M., Hignight, J., Hillairet, A., Himmel, A., Hiraki, T., Hirota, S., Holeczek, J., Horikawa, S., Hosomi, F., Huang, K., Ichikawa, A. . k., Ieki, K., Ieva, M., Ikeda, M., Imber, J., Insler, J., Irvine, T. . j., Ishida, T., Ishii, T., Iwai, E., Iwamoto, K., Iyogi, K., Izmaylov, A., Jacob, A., Jamieson, B., Jiang, M., Johnson, S., Jo, J. . h., Jonsson, P., Jung, C. . k., Kabirnezhad, M., Kaboth, A. . c., Kajita, T., Kakuno, H., Kameda, J., Kanazawa, Y., Karlen, D., Karpikov, I., Katori, T., Kearns, E., Khabibullin, M., Khotjantsev, A., Kielczewska, D., Kikawa, T., Kilinski, A., Kim, J., King, S., Kisiel, J., Kitching, P., Kobayashi, T., Koch, L., Koga, T., Kolaceke, A., Konaka, A., Kopylov, A., Kormos, L. . l., Korzenev, A., Koshio, Y., Kropp, W., Kubo, H., Kudenko, Y., Kurjata, R., Kutter, T., Lagoda, J., Lamont, I., Larkin, E., Laveder, M., Lawe, M., Lazos, M., Lindner, T., Lister, C., Litchfield, R. . p., Longhin, A., Lopez, J. . p., Ludovici, L., Magaletti, L., Mahn, K., Malek, M., Manly, S., Marino, A. . d., Marteau, J., Martin, J. . f., Martins, P., Martynenko, S., Maruyama, T., Matveev, V., Mavrokoridis, K., Mazzucato, E., Mccarthy, M., Mccauley, N., Mcfarland, K. . s., Mcgrew, C., Mefodiev, A., Metelko, C., Mezzetto, M., Mijakowski, P., Miller, C. . a., Minamino, A., Mineev, O., Missert, A., Miura, M., Moriyama, S., Mueller, T. h. . a., Murakami, A., Murdoch, M., Murphy, S., Myslik, J., Nakadaira, T., Nakahata, M., Nakamura, K. . g., Nakamura, K., Nakayama, S., Nakaya, T., Nakayoshi, K., Nantais, C., Nielsen, C., Nirkko, M., Nishikawa, K., Nishimura, Y., Nowak, J., O’Keeffe, H. . m., Ohta, R., Okumura, K., Okusawa, T., Oryszczak, W., Oser, S. . m., Ovsyannikova, T., Owen, R. . a., Oyama, Y., Palladino, Vittorio, Palomino, J. . l., Paolone, V., Payne, D., Perevozchikov, O., Perkin, J. . d., Petrov, Y., Pickard, L., Pinzon Guerra, E. . s., Pistillo, C., Plonski, P., Poplawska, E., Popov, B., Posiadala Zezula, M., Poutissou, J. M., Poutissou, R., Przewlocki, P., Quilain, B., Radicioni, E., Ratoff, P. . n., Ravonel, M., Rayner, M. . a. . m., Redij, A., Reeves, M., Reinherz Aronis, E., Riccio, Ciro, Rodrigues, P. . a., Rojas, P., Rondio, E., Roth, S., Rubbia, A., Ruterbories, D., Rychter, A., Sacco, R., Sakashita, K., Sánchez, F., Sato, F., Scantamburlo, E., Scholberg, K., Schoppmann, S., Schwehr, J., Scott, M., Seiya, Y., Sekiguchi, T., Sekiya, H., Sgalaberna, D., Shah, R., Shaker, F., Shaw, D., Shiozawa, M., Short, S., Shustrov, Y., Sinclair, P., Smith, B., Smy, M., Sobczyk, J. . t., Sobel, H., Sorel, M., Southwell, L., Stamoulis, P., Steinmann, J., Still, B., Suda, Y., Suzuki, A., Suzuki, K., Suzuki, S. . y., Suzuki, Y., Tacik, R., Tada, M., Takahashi, S., Takeda, A., Takeuchi, Y., Tanaka, H. . k., Tanaka, H. . a., Tanaka, M. . m., Terhorst, D., Terri, R., Thompson, L. . f., Thorley, A., Tobayama, S., Toki, W., Tomura, T., Totsuka, Y., Touramanis, C., Tsukamoto, T., Tzanov, M., Uchida, Y., Vacheret, A., Vagins, M., Vasseur, G., Wachala, T., Wakamatsu, K., Walter, C. . w., Wark, D., Warzycha, W., Wascko, M. . o., Weber, A., Wendell, R., Wilkes, R. . j., Wilking, M. . j., Wilkinson, C., Williamson, Z., Wilson, J. . r., Wilson, R. . j., Wongjirad, T., Yamada, Y., Yamamoto, K., Yanagisawa, C., Yano, T., Yen, S., Yershov, N., Yokoyama, M., Yoo, J., Yoshida, K., Yuan, T., Yu, M., Zalewska, A., Zalipska, J., Zambelli, L., Zaremba, K., Ziembicki, M., Zimmerman, E. . d., Zito, M., and Żmuda, J.

Subjects
Particle physics, Nuclear and High Energy Physics, chemistry.chemical_element, Pion production, Astronomy & Astrophysics, MASS, Neutrino beam, PION-PRODUCTION, 7. Clean energy, 01 natural sciences, Physics, Particles & Fields, High Energy Physics - Experiment, Nuclear physics, Scattering, Cross section (physics), 0202 Atomic, Molecular, Nuclear, Particle And Plasma Physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Neutron, 010306 general physics, Neutrino oscillation, Nuclear Experiment, 0206 Quantum Physics, Charged current, Physics, Science & Technology, hep-ex, 010308 nuclear & particles physics, Detector, Nuclear & Particles Physics, MODEL, 0201 Astronomical And Space Sciences, chemistry, Physical Sciences, High Energy Physics::Experiment, Neutrino, Carbon, Nuclear targets
Abstract

17 pages.- 21 figures, We report a measurement of the nu(mu) charged current quasielastic cross-sections on carbon in the T2K on-axis neutrino beam. The measured charged current quasielastic cross-sections on carbon at mean neutrino energies of 1.94 GeV and 0.93 GeV are (11.95 +/- 0.19(stat)(-1.47)(+1.82)(syst)) x 10(-39) cm(2)/neutron, and (10.64 +/- 0.37(stat)(-1.65)(+2.03)(syst)) x 10(-39) cm(2)/neutron, respectively. These results agree well with the predictions of neutrino interaction models. In addition, we investigated the effects of the nuclear model and the multi-nucleon interaction., It is a pleasure to thank Mr. Taino from Mechanical Support Co. for helping with the construction of INGRID. 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
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24. Measurement of neutrino oscillation by the K2K experiment

Author

S. Andringa, T. Nakadaira, R. Gran, Tadayuki Takahashi, Yoshitaka Itow, Makoto Sakuda, F. Nakata, K. Fujii, A. Rodriguez, D. Kerr, M. H. Ahn, U. Dore, S. Likhoded, S P Mikheyev, K. Martens, Y. Totsuka, Y. Takubo, Kate Scholberg, Y. Takeuchi, Yu. Kudenko, Shinya Yamada, H. I. Jang, S. C. Boyd, M. Okumura, A. Blondel, A. Ikeda, K. Tashiro, Itsuo Nakano, C. K. Jung, M. Sekiguchi, H. Yokoyama, F. Pierre, Minoru Yoshida, M. Kitamura, L. Whitehead, K. Taki, S. Nawang, N. Yershov, Shogo Nishiyama, O. V. Mineev, E. Sharkey, K. Kaneyuki, Hirokazu Ishino, D. Kielczewska, Shoei Nakayama, Taichi Morita, Y. Kurimoto, Hiroyuki Noumi, T. Otaki, R. Schroeter, L. Ludovici, E. J. Jeon, Takashi Kobayashi, J. Kameda, M. Onchi, Y. Yamanoi, C. Cavata, M. Sorel, Katsuki Hiraide, H. C. Bhang, P. F. Loverre, J. Bouchez, M. Y. Pac, G. Sitjes, S. Mine, C. O. Kim, I. Kato, E. Seo, A. Shima, T. Kutter, K. Hayashi, H. So, S. M. Oser, T. Ishida, J. Hill, J. Catala, A. K. Ichikawa, Tomoyuki Maruyama, T. Hara, K. K. Joo, Lawrence Sulak, P. Novella, Susumu Noda, S. Fukuda, K. Takenaka, Yoshitaka Kuno, T. Ishii, Masaaki Tanaka, F. Nova, John G. Learned, Y. Yamada, B. H. Kang, Y. Obayashi, M. Takasaki, A. Minamino, A. Tornero-Lopez, J.J. Gómez-Cadenas, Takanori Sasaki, M. Fechner, S. Echigo, C. Yanagisawa, J. Zalipska, C. McGrew, G. Jover, J.H. Kim, K. Nakamura, K. B. McConnel Mahn, S. B. Kim, V. A. Matveev, M. Minakawa, A. Cervera, C. W. Walter, Y. Takenaga, Y. Hayato, Yuichi Oyama, Masaya Hasegawa, M. Miura, G. Kume, M. Tada, David William Casper, Takehisa Hasegawa, C. Mitsuda, K. Sato, J. Hosaka, A. Suzuki, R. L. Helmer, Hyosun Kim, Katsuhiro Kobayashi, A. Sakai, Nobuyuki Sakurai, Yusuke Koshio, S. Ueda, Shoji Yamamoto, J. Mallet, S. Matsuno, H. Takeuchi, T. Ooyabu, Masayuki Nakahata, Y. Aoyama, R. Terri, R. Ashie, H. Ishii, Y. Suga, Masashi Yokoyama, J. S. Jang, G. Mitsuka, E. Aliu, H. Tanaka, A. Sarrat, Mark R. Vagins, K. K. Shiraishi, Takaaki Kajita, Masaki Ishitsuka, Kenichi Tanaka, Yoshihiro Suzuki, H. Park, Masaharu Ieiri, X. Espinal, Y. Moriguchi, Beom Jun Kim, Michael B. Smy, Y. Fukuda, T. Iwashita, R. J. Wilkes, I. Higuchi, I. T. Lim, Y. Kato, W. R. Kropp, Federico Sanchez, Toshio Namba, C. Mariani, H. Maesaka, Ko Okumura, E. Kearns, Shigeki Aoki, T. Toshito, Hiroshi Sato, K. Asakura, P. Kitching, C. Mauger, J. Argyriades, H. Nishino, S. H. Lim, A. Okada, M. Kohama, M. Takatsuki, F. Berghaus, Tsuyoshi Nakaya, C. Saji, J. Kubota, Jordi Burguet-Castell, H. G. Berns, W. Wang, Masataka Iinuma, E. Hirose, J. Yoo, K. Nishikawa, J. Y. Kim, Henry W. Sobel, K. Nitta, Y. Tanaka, Masato Shiozawa, Shaomin Chen, A. Konaka, Shigetaka Moriyama, K. O. Cho, R. Nambu, N. Tamura, Silvia Borghi, J. L. Stone, T. Inagaki, A. N. Khotjantsev, Y. Fujii, J. H. Choi, M. M. Khabibullin, Stephane T'Jampens, E. Fernandez, I. S. Jeong, and K. Ishihara

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Tamura, Norio, 010308 nuclear & particles physics, Oscillation, T2K experiment, FOS: Physical sciences, Física, Elementary particle, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, Massless particle, High Energy Physics - Experiment (hep-ex), K2K experiment, 0103 physical sciences, 田村, 詔生, Neutrino, 010306 general physics, Neutrino oscillation, Lepton
Abstract

We present measurements of nu_mu disappearance in K2K, the KEK to Kamioka long-baseline neutrino oscillation experiment. One hundred and twelve beam-originated neutrino events are observed in the fiducial volume of Super-Kamiokande with an expectation of 158.1^{+9.2}_{-8.6} events without oscillation. A distortion of the energy spectrum is also seen in 58 single-ring muon-like events with reconstructed energies. The probability that the observations are explained by the expectation for no neutrino oscillation is 0.0015% (4.3sigma). In a two flavor oscillation scenario, the allowed Delta m^2 region at sin^2(2theta) is between 1.9 and 3.5 x 10^{-3} eV^2 at the 90% C.L. with a best-fit value of 2.8 x 10^{-3} eV^2., Comment: 40 pages, 48 figures

Published
2006

25. Recent Results from the T2K Experiment

Author

Yuichi Oyama, R. P. Litchfield, S. Assylbekov, Koji Yamamoto, K. Abe, A. Cervera, V. Palladino, C. Yanagisawa, A. Blondel, V. Galymov, T. Tomura, E. Mazzucato, G. F. Pearce, M. Ziembicki, R. Ohta, W. R. Kropp, Y. Totsuka, J. Zalipska, J. Insler, E. L. Mathie, M. Ravonel, Susumu Takahashi, S. Tobayama, M. Lawe, S. J. Coleman, J. Lagoda, A. Himmel, R. G. Calland, Y. Takeuchi, Gareth J. Barker, D. Gudin, T. Wongjirad, K. Sakashita, J. Caravaca Rodríguez, H.A. Tanaka, A. Thorley, A. Korzenev, K. Nishikawa, G. D. Lopez, M. Lazos, T. Kajita, Minoru Otani, S. M. Oser, S. B. Boyd, Y. Shustrov, Robert Wilson, Antonin Vacheret, M. Tzanov, M. Hierholzer, D. Ruterbories, C. Touramanis, Antonio Ereditato, N. Yershov, C. J. Metelko, Rhiju Das, H. W. Sobel, C. Licciardi, J. P. Coleman, C. Bojechko, Kevin Scott McFarland, I. Taylor, S. Horikawa, Y. Seiya, B. Jamieson, A. Zalewska, Federico Sanchez, C. J. Densham, Jan T. Sobczyk, S. Short, N. C. Hastings, P. Plonski, M. Zito, Hidekazu Kakuno, Hiroaki Aihara, T. Maruyama, S. Mine, P. N. Ratoff, T. Ishii, G. Christodoulou, J. Holeczek, T. Kutter, K. Nakayoshi, K. Laihem, B. Quilain, S. Murphy, Mauricio Barbi, R. L. Helmer, I. Kreslo, S. Kumaratunga, E. Frank, Marco Laveder, J. M. Poutissou, C. Bronner, M. Ieva, E. Kearns, Masashi Yokoyama, N. J. Buchanan, J. H. Jo, G.D. Barr, K. K. Joo, T. Wachala, M. Friend, L. Southwell, T. Dealtry, J. Myslik, C. W. Walter, E. Poplawska, R. Tacik, A. Missert, J. Zmuda, O. Perevozchikov, S. R. Dennis, A. Bravar, F. Retiere, T. Golan, S. Moriyama, P. Stamoulis, K. Ieki, K. Koseki, Y. Nishimura, T. J. Irvine, Yusuke Koshio, Takahiro Hiraki, D. Karlen, D. Brailsford, I. Karpikov, K. Zaremba, Yuki Fujii, R. Poutissou, O. V. Mineev, A. Gaudin, Masayuki Nakahata, A. Konaka, L. L. Kormos, André Rubbia, Tsuyoshi Nakaya, P. Masliah, C. K. Jung, Hidetoshi Kubo, Atsushi Takeda, R. J. Wilkes, D. Kielczewska, M. Batkiewicz, Y. Uchida, K. P. Lee, W. H. Toki, A. V. Waldron, T. Nagasaki, T. Akiri, M. Ikeda, P. Jonsson, Rosario Castillo, A. Dabrowska, A. Longhin, B. A. Popov, P. A. Rodrigues, J. Dumarchez, G. Kogan, J. Marteau, J. Schwehr, F. Bay, Hiroyuki Sekiya, T. Szeglowski, T. Hasegawa, T. Tsukamoto, A. Robert, Masato Shiozawa, L. Ludovici, C. Wilkinson, Janusz Marzec, F. Dufour, G. De Rosa, Z. Williamson, Akitaka Ariga, Ko Okumura, Y. Fukuda, A. Izmaylov, K. Mavrokoridis, F. d. M. Blaszczyk, R. A. Owen, A. Haesler, A. Clifton, D. Sgalaberna, Y. Kanazawa, Joshua Hignight, Kendall Mahn, Yoshihiro Suzuki, A. Redij, S. B. Kim, B. E. Berger, S. Bhadra, S. Emery, P. Sinclair, Scott Davis, D. Hansen, J. D. Perkin, A. J. Finch, R. A. Johnson, T. Lindner, M. A. M. Rayner, S. J. Ives, Shigeki Aoki, David Hadley, J.J. Gómez-Cadenas, K. Gilje, M. Macaire, T. Ishida, M. Miura, Michal Dziewiecki, S. Giffin, A. N. Khotjantsev, A. Kolaceke, E. Radicioni, S. Manly, M. J. Wilking, T. Yuan, V. Matveev, D. L. Wark, T. Duboyski, L. Zambelli, J. Steinmann, S. L. Cartwright, C. A. Miller, A. Minamino, Kate Scholberg, K. Connolly, T. Hara, A. D. Marino, Yusuke Suda, M. Malek, D. Terhorst, M. Hartz, Masashi Tanaka, Iain Alexander Bertram, A. P. Furmanski, J. Imber, V. Paolone, A. Jacob, K. Iyogi, E. D. Zimmerman, R. A. Wendell, A. C. Weber, A. Kilinski, J. R. Wilson, C. Nielsen, T. Okusawa, Jungsang Kim, S. Y. Suzuki, M. Bass, A. C. Kaboth, S. Berkman, N. Abgrall, C. Lister, Vincenzo Berardi, Tomoko Ariga, G. Vasseur, N. Grant, G. Collazuol, Mark Scott, M. Posiadala, M. G. Catanesi, T. Nakai, E. Rondio, N. McCauley, R. Terri, K. Huang, P. Przewlocki, Lester D.R. Thompson, M. R. Vagins, A. Murakami, I. T. Lim, C. Hearty, B. Still, Richard J.H. Smith, Jan Kisiel, T. Kobayashi, S. Di Luise, L. Cremonesi, A. Curioni, A. T. Suzuki, J. F. Martin, D. Autiero, T. Nakadaira, M. Nirkko, C. Pistillo, B. Smith, E. Reinherz-Aronis, Y. Petrov, E. Scantamburlo, R.P. Kurjata, S. W. Bentham, D. Cherdack, I. Z. Danko, M. B. Smy, S. A. Dytman, Koh Ueno, R. Sacco, F. Di Lodovico, M. Tada, D. J. Payne, C. McGrew, Yu. G. Kudenko, L. Monfregola, P. Hamilton, M. Murdoch, Y. Hayato, C. Andreopoulos, S. Nakayama, S. Yen, M. M. Khabibullin, L. Magaletti, C. Giganti, M. Y. Pac, O. Drapier, Seiko Hirota, A. K. Ichikawa, A. Hillairet, S. Roth, J. Kameda, T. Kikawa, E. S. Pinzon Guerra, M. Gonin, Th. A. Mueller, Matthew T. Reeves, P. Mijakowski, L. Escudero, W. Oryszczak, H. M. O'Keeffe, Kazuhiro Suzuki, P. Kitching, M. O. Wascko, T. Sekiguchi, M. Sorel, M. D. Haigh, Koji Nakamura, P. de Perio, Yoshikazu Yamada, Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), T2K, Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), K., Abe, N., Abgrall, H., Aihara, T., Akiri, C., Andreopoulo, S., Aoki, A., Ariga, T., Ariga, S., Assylbekov, D., Autiero, M., Barbi, G., Barker, G., Barr, M., Ba, M., Batkiewicz, F., Bay, S., Bentham, V., Berardi, B., Berger, S., Berkman, I., Bertram, S., Bhadra, F., Blaszczyk, A., Blondel, C., Bojechko, S., Boyd, D., Brailsford, A., Bravar, C., Bronner, N., Buchanan, R., Calland, J. C., Rodr??????guez, S., Cartwright, R., Castillo, M., Catanesi, A., Cervera, D., Cherdack, G., Christodoulou, A., Clifton, J., Coleman, S., Coleman, G., Collazuol, K., Connolly, L., Cremonesi, A., Curioni, A., Dabrowska, I., Danko, R., Da, S., Davi, P. d., Perio, DE ROSA, Gianfranca, T. a., Dealtry, S. b., Denni, C., Densham, F. D., Lodovico, S. D., Luise, O., Drapier, T., Duboyski, F., Dufour, J., Dumarchez, S., Dytman, M., Dziewiecki, S., Emery, A., Ereditato, L., Escudero, A., Finch, E., Frank, M., Friend, Y., Fujii, Y., Fukuda, A., Furmanski, V., Galymov, A., Gaudin, S., Giffin, C., Giganti, K., Gilje, T., Golan, J., Gomez Cadena, M., Gonin, N., Grant, D., Gudin, D., Hadley, A., Haesler, M., Haigh, P., Hamilton, D., Hansen, T., Hara, M. b., Hartz, T., Hasegawa, N., Hasting, Y., Hayato, C., Hearty, R., Helmer, M., Hierholzer, J., Hignight, A., Hillairet, A., Himmel, T., Hiraki, S., Hirota, J., Holeczek, S., Horikawa, K., Huang, A., Ichikawa, K., Ieki, M., Ieva, M., Ikeda, J., Imber, J., Insler, T., Irvine, T., Ishida, T., Ishii, S., Ive, K., Iyogi, A. x., Izmaylov, A., Jacob, B., Jamieson, R., Johnson, J., Jo, P., Jonsson, K., Joo, C. a., Jung, A., Kaboth, T., Kajita, H., Kakuno, J., Kameda, Y., Kanazawa, D. b., Karlen, I., Karpikov, E., Kearn, M., Khabibullin, A., Khotjantsev, D., Kielczewska, T., Kikawa, A., Kilinski, J., Kim, S., Kim, J., Kisiel, P., Kitching, T., Kobayashi, G., Kogan, A., Kolaceke, A., Konaka, L., Kormo, A., Korzenev, K., Koseki, Y., Koshio, I., Kreslo, W., Kropp, H., Kubo, Y., Kudenko, S., Kumaratunga, R., Kurjata, T., Kutter, J., Lagoda, K., Laihem, M., Laveder, M., Lawe, M., Lazo, K., Lee, C., Licciardi, I., Lim, T., Lindner, C., Lister, R. b., Litchfield, A., Longhin, G., Lopez, L., Ludovici, M., Macaire, L., Magaletti, K., Mahn, M., Malek, S., Manly, A., Marino, J., Marteau, J., Martin, T., Maruyama, J., Marzec, P., Masliah, E., Mathie, V., Matveev, K., Mavrokoridi, E., Mazzucato, N., Mccauley, K., Mcfarland, C., Mcgrew, C., Metelko, P., Mijakowski, C., Miller, A., Minamino, O., Mineev, S., Mine, A., Missert, M., Miura, L., Monfregola, S., Moriyama, T., Mueller, A., Murakami, M., Murdoch, S., Murphy, J., Myslik, T., Nagasaki, T., Nakadaira, M., Nakahata, T., Nakai, K. y., Nakamura, S., Nakayama, T., Nakaya, K., Nakayoshi, C., Nielsen, M., Nirkko, K., Nishikawa, Y., Nishimura, H., O'Keeffe, R., Ohta, K., Okumura, T., Okusawa, W., Oryszczak, S., Oser, M., Otani, R., Owen, Y., Oyama, M., Pac, Palladino, Vittorio, V., Paolone, D., Payne, G., Pearce, O., Perevozchikov, J., Perkin, Y., Petrov, E. P., Guerra, C., Pistillo, P., Plonski, E., Poplawska, B., Popov, M., Posiadala, J., Poutissou, R., Poutissou, P., Przewlocki, B., Quilain, E., Radicioni, P., Ratoff, M., Ravonel, M., Rayner, A., Redij, M., Reeve, E., Reinherz Aroni, F., Retiere, A., Robert, P., Rodrigue, E., Rondio, S., Roth, A., Rubbia, D., Ruterborie, R., Sacco, K., Sakashita, F., S??????nchez, E., Scantamburlo, K., Scholberg, J., Schwehr, M., Scott, Y., Seiya, T., Sekiguchi, H., Sekiya, D., Sgalaberna, M., Shiozawa, S., Short, Y., Shustrov, P., Sinclair, B., Smith, R., Smith, M., Smy, J., Sobczyk, H., Sobel, M., Sorel, L., Southwell, P., Stamouli, J., Steinmann, B., Still, Y., Suda, A., Suzuki, K., Suzuki, S., Suzuki, Y., Suzuki, T., Szeglowski, R. b., Tacik, M., Tada, S., Takahashi, A., Takeda, Y., Takeuchi, H., Tanaka, M., Tanaka, I., Taylor, D., Terhorst, R., Terri, L., Thompson, A., Thorley, S., Tobayama, W., Toki, T., Tomura, Y., Totsuka, C., Touramani, T., Tsukamoto, M., Tzanov, Y., Uchida, K., Ueno, A., Vacheret, M. y., Vagin, G., Vasseur, T., Wachala, A., Waldron, C., Walter, D. a., Wark, M., Wascko, A. a., Weber, R., Wendell, R., Wilke, M., Wilking, C., Wilkinson, Z., Williamson, J., Wilson, R., Wilson, T., Wongjirad, Y., Yamada, K., Yamamoto, C., Yanagisawa, S., Yen, N., Yershov, M., Yokoyama, T., Yuan, A., Zalewska, J., Zalipska, L., Zambelli, K., Zaremba, M., Ziembicki, E., Zimmerman, M., Zito, and J., Zmuda

Subjects
θ13, Nuclear and High Energy Physics, Particle physics, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, Neutrino Oscillation, 01 natural sciences, 7. Clean energy, Nuclear physics, Long Baseline, Atomic and Molecular Physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Neutrino oscillation, GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries), ComputingMilieux_MISCELLANEOUS, T2K, Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, T2K experiment, Solar neutrino problem, Atomic and Molecular Physics, and Optics, Neutrino detector, Measurements of neutrino speed, High Energy Physics::Experiment, and Optics, Neutrino, Neutrino astronomy
Abstract

The Tokai to Kamioka (T2K) experiment studies neutrino oscillations using a beam of muon neutrinos produced by an accelerator. The neutrinos travel from J-PARC on the east coast of Japan and are detected 295 kilometers further away in the Super-Kamiokande detector. A complex of near detectors located 280 meters away from the neutrino production target is used to better characterize the neutrino beam and reduce systematic uncertainties. The experiment aims at measuring electronic neutrino appearance ( ν μ → ν e oscillation) to measure the neutrino mixing angle θ 13 , and muon neutrino disappearance to measure the neutrino mixing angle θ 23 and mass splitting | Δ m 32 2 |. We report here electron neutrino appearance results using three years of data, recorded until the 2012 summer, as well as muon neutrino disappearance results based on the data coming from the first two years of the experiment.

Published
2012
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26. Measurements of the T2K neutrino beam properties using the INGRID on-axis near detector

Author

J. Marteau, Z. Williamson, P. F. Loverre, M. Iida, T. Ishii, M. M. Khabibullin, H. Kaji, J. Blocki, Andrew Marone, S. Dytman, H. Kubo, J. M. Roney, T. Ishida, J. Bouchez, Thorsten Lux, J. Zmuda, Frédéric Dufour, M. Gonin, G. P. Ward, Y. Kouzuma, L. Escudero, Kenichi Tanaka, Akitaka Ariga, R.P. Kurjata, S. W. Bentham, J. R. Wilson, C. Nielsen, M. Messina, I. T. Lim, Shigeki Aoki, S. Giffin, I. Z. Danko, Justin Albert, A. V. Waldron, P. A. Rodrigues, M. Besnier, J. Dobson, A. Minamino, N. Abgrall, Joshua Hignight, Yoshihiro Suzuki, K. Tashiro, Katsuyu Kasami, S. Tobayama, J. L. Stone, J. J. Walding, V. Galymov, K. Kowalik, J. Myslik, M. Malek, L. L. Kormos, S. Horikawa, Masashi Tanaka, Koji Nakamura, A. N. Khotjantsev, Y. Fujii, Suyong Choi, Alastair Grant, T. Golan, C. Hansen, Y. Totsuka, J. D. Perkin, M. Barbi, G. Mituka, V. Paolone, T. Maryon, K. Iyogi, Yutaka Yamanoi, M. M. Tanaka, W. Metcalf, W. Coleman, T. Wongjirad, F. Di Lodovico, André Rubbia, S. Takahashi, F. Bay, Hiroshi Yamaoka, A. Marchionni, T. Nobuhara, C. A. Chavez, J. Kisiel, T. Kikawa, A. C. Weber, M. J. Wilking, E. D. Zimmerman, Tomiyoshi Haruyama, Robert Henderson, K. Zaremba, Atsushi Takeda, M. Siyad, V. Pettinacci, M. Miura, Barry L. Nelson, Yu. G. Kudenko, T. Ozaki, E. Mazzucato, N. Kimura, L. Monfregola, J. Dumarchez, J. P.A.M. De André, Robert Wilson, K. Suzuki, D. Naples, Y. Takeuchi, Shinya Yamada, A. Robert, J. Steinmann, S. Di Luise, M. Ravonel, K. Nitta, Norio Higashi, K. Gilje, G. F. Pearce, R. A. Johnson, C. Giganti, H. S. Budd, Oleg Mineev, Alexander Finch, N. Grant, A. Izmaylov, A. Curioni, M. Taguchi, C. K. Jung, J. L. Raaf, Michal Dziewiecki, G. Jover-Manas, M. Ziembicki, G. Collazuol, Sy Suzuki, M. Murdoch, Minoru Otani, E. L. Mathie, K. Nishikawa, A. Carver, P. Paul, Kazuhiro Yamamoto, J. A. Nowak, D. Kielczewska, M. Batkiewicz, C. Ishihara, A. Dabrowska, Takahiro Okamura, J. Argyriades, D. Ruterbories, Mark Scott, Jan T. Sobczyk, P. de Perio, K. Laihem, A.K. Ghosh, J. Beucher, N. West, I. Kato, S. Yen, T. Yano, T. Dealtry, Michel Raymond, A. Missert, P. Guzowski, S. B. Boyd, M. Sorel, Takaaki Kajita, G. D. Lopez, Luigi Salvatore Esposito, N. Nagai, J. Zalipska, J. Lagoda, M. Iwasaki, T. Hara, F. Pierre, R. A. Wendell, G. Christodoulou, T. Lindner, O. Drapier, M. Bass, A. Suzuki, B. Hartfiel, Masashi Yokoyama, Y. Obayashi, C. Densham, K. Sasaki, F. Moreau, M. A. Ward, Vincenzo Berardi, E. Poplawska, K. Ueno, Hiroaki Aihara, P. N. Ratoff, P. T. Le, C. Bojechko, R. J. Smith, S. Manly, J. M. Levy, M. Zito, A. Konaka, S. Gomi, Yasuhiro Makida, M. Szeptycka, Leigh H. Whitehead, T. Kutter, A. K. Ichikawa, S. Roth, Federico Sanchez, K. Koseki, Tomoko Ariga, I. Kreslo, T. Sekiguchi, Kimihiro Okumura, A. Cazes, M. Ieva, N. Kulkarni, A. Hillairet, A. Cervera, K. Ieki, V. Palladino, Tsuyoshi Nakaya, J. Kubota, Masayuki Nakahata, Y. Uchida, J. Escallier, C. W. Walter, D. G. Brook-Roberge, H. Kakuno, C. Matsumura, D. Payne, R. Tacik, C. Hearty, A. Delbart, Tatsushi Nakamoto, M. A. George, K. Kaneyuki, Gavin Davies, J. Ilic, L. Ludovici, B. E. Berger, G. Vasseur, S. Murphy, D. Karlen, K. Hamano, T. Tsukamoto, Toru Ogitsu, K. Mavrokoridis, F. d. M. Blaszczyk, P. Kitching, G. Ganetis, Michael Anerella, R. Castillo, Yuichi Oyama, Scott Davis, D. Hansen, M. O. Wascko, R. P. Litchfield, E. Kearns, Masato Shiozawa, L. Zambelli, R. J. Wilkes, B. A. Popov, David Calvet, Hiroyuki Kawamuko, S. Koike, F. Retiere, C. Licciardi, S. J. Ives, S. Assylbekov, A. Haesler, C. A. Miller, Takayuki Tomaru, Biagio Rossi, Hiroyuki Sekiya, I. Taylor, T. Szeglowski, Soo-Bong Kim, B. Still, G. Wikström, S. Bhadra, B. Kirby, C. Strabel, Kendall Mahn, Kate Scholberg, E. Frank, Marco Laveder, M. Hartz, A. Ferrero, W. Toki, S. Nakayama, P. Mijakowski, A. Sarrat, S. Short, N. C. Hastings, U. Dore, A. Thorley, Henry W. Sobel, T. M. Raufer, M. D. Haigh, A. Gendotti, A. Korzenev, Joseph Muratore, P. Wanderer, J. J. Gomez-Cadenas, Yoshinari Hayato, C. Yanagisawa, Gareth J. Barker, Y. Shimizu, Dmitriy Beznosko, J. P. Coleman, Rhiju Das, B. Jamieson, Y. Kurimoto, Michael Litos, P. Gumplinger, C. Touramanis, Antonio Ereditato, N. Yershov, R. L. Helmer, Kevin Scott McFarland, Takashi Kobayashi, D. I. Scully, E. Radicioni, T. Maruyama, Marek Stodulski, T. Nakadaira, A. Yamamoto, F. Khanam, G.D. Barr, D. L. Wark, M. Y. Pac, K. P. Lee, A. Muir, Kodai Matsuoka, R. Terri, T. Hasegawa, S. Mine, A. D. Marino, A. Blondel, S. Sabouri, M. Fechner, Fred Gannaway, J. Marzec, N. J. Buchanan, A. Bravar, O. Araoka, Y. Yamada, K. Nakajima, M. Tada, Hirokatsu Ohhata, S. L. Cartwright, Y. Fukuda, D. Autiero, K. Connolly, T. Yamauchi, S. W. K. Emery, Yasuo Ajima, T. McLachlan, D. Terhorst, K. Abe, R. Sacco, A. Terashima, C. McGrew, C. Andreopoulos, M. L. Navin, H.A. Tanaka, Achim Stahl, N. Tanimoto, J. M. Poutissou, C. Bronner, T. C. Nicholls, Iain Alexander Bertram, J. Imber, S. Moriyama, P. Stamoulis, A. Gaudin, W. Qian, M. B. Smy, A. Zalewska, G. Kogan, J. Swierblewski, M. Shibata, G. De Rosa, H. Nishino, A. Hyndman, R. A. Owen, A. Badertscher, S. M. Oser, M. Macaire, Y. Seiya, J. Schwehr, Y. Takenaga, M. Goldhaber, T. Yuan, K. Mizouchi, Viktor Matveev, Paul Fraser Harrison, T. Okusawa, Jungsang Kim, S. Y. Suzuki, M. Ikeda, Ken Sakashita, Antonin Vacheret, W. R. Kropp, J. F. Martin, M. Tzanov, C. J. Metelko, R. Poutissou, P. Masliah, B. Morgan, A. Hatzikoutelis, J. Y. Kim, R. Sulej, K. K. Joo, T. Wachala, Yusuke Koshio, M. Mezzetto, A. Murakami, T. Nakai, Jing Wang, E. Rondio, P. Dinh Tran, N. McCauley, J. Kameda, P. Przewlocki, Lester D.R. Thompson, K. Hayashi, M. Vagins, B. Andrieu, J. Holeczek, M. Dziomba, Eiichi Hirose, M. Posiadala, M. G. Catanesi, V. Kravtsov, M. Day, A. Longhin, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, T2K, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Abgrall, Nicolas, Argyriades, Jeremy, Blondel, Alain, Bravar, Alessandro, Dufour, Fanny, Ferrero, Andréa, Haesler, Alexis, Korzenev, Alexander, Murphy, Sébastien, Ravonel Salzgeber, Melody, Wikstrom, Gustav, K., Abe, N., Abgrall, Y., Ajima, H., Aihara, J. B., Albert, C., Andreopoulo, B., Andrieu, M. D., Anerella, S., Aoki, O., Araoka, J., Argyriade, A., Ariga, T., Ariga, S., Assylbekov, D., Autiero, A., Badertscher, M., Barbi, G. J., Barker, G., Barr, M., Ba, M., Batkiewicz, F., Bay, S., Bentham, V., Berardi, B. E., Berger, I., Bertram, M., Besnier, J., Beucher, D., Beznosko, S., Bhadra, F. d. M., Blaszczyk, J., Blocki, A., Blondel, C., Bojechko, J., Bouchez, S. B., Boyd, A., Bravar, C., Bronner, D. G., Brook Roberge, N., Buchanan, H., Budd, D., Calvet, S. L., Cartwright, A., Carver, R., Castillo, M. G., Catanesi, A., Caze, A., Cervera, C., Chavez, S., Choi, G., Christodoulou, J., Coleman, G., Collazuol, W., Coleman, K., Connolly, A., Curioni, A., Dabrowska, I., Danko, R., Da, G. S., Davie, S., Davi, M., Day, DE ROSA, Gianfranca, J. P. A. M., de André, P., de Perio, T., Dealtry, A., Delbart, C., Densham, F., Di Lodovico, S., Di Luise, P., Dinh Tran, J., Dobson, U., Dore, O., Drapier, F., Dufour, J., Dumarchez, S., Dytman, M., Dziewiecki, M., Dziomba, S., Emery, A., Ereditato, J. E., Escallier, L., Escudero, L. S., Esposito, M., Fechner, A., Ferrero, A. J., Finch, E., Frank, Y., Fujii, Y., Fukuda, V., Galymov, G. L., Ganeti, F. C., Gannaway, A., Gaudin, A., Gendotti, M., George, S., Giffin, C., Giganti, K., Gilje, A. K., Ghosh, T., Golan, M., Goldhaber, J. J., Gomez Cadena, S., Gomi, M., Gonin, N., Grant, A., Grant, P., Gumplinger, P., Guzowski, A., Haesler, M. D., Haigh, K., Hamano, C., Hansen, D., Hansen, T., Hara, P. F., Harrison, B., Hartfiel, M., Hartz, T., Haruyama, T., Hasegawa, N. C., Hasting, A., Hatzikouteli, K., Hayashi, Y., Hayato, C., Hearty, R. L., Helmer, R., Henderson, N., Higashi, J., Hignight, A., Hillairet, E., Hirose, J., Holeczek, S., Horikawa, A., Hyndman, A. K., Ichikawa, K., Ieki, M., Ieva, M., Iida, M., Ikeda, J., Ilic, J., Imber, T., Ishida, C., Ishihara, T., Ishii, S. J., Ive, M., Iwasaki, K., Iyogi, A., Izmaylov, B., Jamieson, R. A., Johnson, K. K., Joo, G. V., Jover Mana, C. K., Jung, H., Kaji, T., Kajita, H., Kakuno, J., Kameda, K., Kaneyuki, D., Karlen, K., Kasami, I., Kato, H., Kawamuko, E., Kearn, M., Khabibullin, F., Khanam, A., Khotjantsev, D., Kielczewska, T., Kikawa, J., Kim, J. Y., Kim, S. B., Kim, N., Kimura, B., Kirby, J., Kisiel, P., Kitching, T., Kobayashi, G., Kogan, S., Koike, A., Konaka, L. L., Kormo, A., Korzenev, K., Koseki, Y., Koshio, Y., Kouzuma, K., Kowalik, V., Kravtsov, I., Kreslo, W., Kropp, H., Kubo, J., Kubota, Y., Kudenko, N., Kulkarni, Y., Kurimoto, R., Kurjata, T., Kutter, J., Lagoda, K., Laihem, M., Laveder, K. P., Lee, P. T., Le, J. M., Levy, C., Licciardi, I. T., Lim, T., Lindner, R. P., Litchfield, M., Lito, A., Longhin, G. D., Lopez, P. F., Loverre, L., Ludovici, T., Lux, M., Macaire, K., Mahn, Y., Makida, M., Malek, S., Manly, A., Marchionni, A. D., Marino, A. J., Marone, J., Marteau, J. F., Martin, T., Maruyama, T., Maryon, J., Marzec, P., Masliah, E. L., Mathie, C., Matsumura, K., Matsuoka, V., Matveev, K., Mavrokoridi, E., Mazzucato, N., Mccauley, K. S., Mcfarland, C., Mcgrew, T., Mclachlan, M., Messina, W., Metcalf, C., Metelko, M., Mezzetto, P., Mijakowski, C. A., Miller, A., Minamino, O., Mineev, S., Mine, A. D., Missert, G., Mituka, M., Miura, K., Mizouchi, L., Monfregola, F., Moreau, B., Morgan, S., Moriyama, A., Muir, A., Murakami, J. F., Muratore, M., Murdoch, S., Murphy, J., Myslik, N., Nagai, T., Nakadaira, M., Nakahata, T., Nakai, K., Nakajima, T., Nakamoto, K., Nakamura, S., Nakayama, T., Nakaya, D., Naple, M. L., Navin, B., Nelson, T. C., Nicholl, C., Nielsen, K., Nishikawa, H., Nishino, K., Nitta, T., Nobuhara, J. 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Subjects
Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Neutrino oscillation, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, on-axis near detector, FOS: Physical sciences, ddc:500.2, 01 natural sciences, 7. Clean energy, neutrino oscillation, neutrino detector, wavelength shifting fiber, t2k, extruded scintillator, neutrino beam, Neutrino detector, Nuclear physics, Neutrino beam, 0103 physical sciences, Extruded scintillator, Muon neutrino, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, Instrumentation, T2K, Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Wavelength shifting fiber, T2K experiment, Física, Instrumentation and Detectors (physics.ins-det), Wavelength shiftingfiber, Measurements of neutrino speed, Physics::Accelerator Physics, High Energy Physics::Experiment, Neutrino, Beam (structure), Lepton
Abstract

Precise measurement of neutrino beam direction and intensity was achieved based on a new concept with modularized neutrino detectors. INGRID (Interactive Neutrino GRID) is an on-axis near detector for the T2K long baseline neutrino oscillation experiment. INGRID consists of 16 identical modules arranged in horizontal and vertical arrays around the beam center. The module has a sandwich structure of iron target plates and scintillator trackers. INGRID directly monitors the muon neutrino beam profile center and intensity using the number of observed neutrino events in each module. The neutrino beam direction is measured with accuracy better than 0.4 mrad from the measured profile center. The normalized event rate is measured with 4% precision., Comment: 32 pages, 27 figures, submitted to Nucl. Instr. and Meth. A

Published
2012
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27. Indication of electron neutrino appearance from an accelerator-produced off-axis muon neutrino beam

Author

S. Roth, J. Lagoda, M. Iwasaki, Paul Fraser Harrison, T. Okusawa, Jungsang Kim, S. Y. Suzuki, M. Ikeda, M. Bass, F. Pierre, R. A. Wendell, C. Bojechko, C. W. Walter, B. A. Popov, Vincenzo Berardi, P. T. Le, P. Mijakowski, C. Licciardi, Tomoko Ariga, J. Ilic, M. Ravonel, T. Maruyama, E. L. Mathie, V. Galymov, T. Ishii, M. A. George, I. Taylor, G. Vasseur, T. Nakadaira, Kazuhiro Suzuki, M. Ieva, Hirokatsu Ohhata, Y. Fukuda, D. Autiero, P. Paul, Kate Scholberg, M. M. Khabibullin, A. Yamamoto, Toru Ogitsu, F. Khanam, G.D. Barr, T. Maryon, Michel Raymond, P. Kitching, R. Tacik, M. Hartz, G. Christodoulou, S. B. Boyd, J. R. Wilson, K. K. Joo, T. Wachala, E. Frank, M. O. Wascko, C. A. Chavez, Marco Laveder, A. Ferrero, B. Hartfiel, A. C. Weber, E. Kearns, K. P. Lee, Justin Albert, N. Abgrall, M. Szeptycka, M. M. Tanaka, Leigh H. Whitehead, J. P.A.M. De André, E. Mazzucato, Sy Suzuki, Y. Obayashi, K. Mavrokoridis, G. F. Pearce, J. J. Walding, A. Suzuki, J. Myslik, N. Grant, André Rubbia, M. Murdoch, S. W. K. Emery, Masayuki Nakahata, P. de Perio, G. Collazuol, Mark Scott, Yusuke Koshio, Masashi Tanaka, S. Yen, T. Ishida, Yoshikazu Yamada, F. d. M. Blaszczyk, T. Yano, T. Golan, Biagio Rossi, Hiroyuki Sekiya, Y. Uchida, C. Hansen, C. A. Miller, A. Minamino, M. Day, V. Paolone, P. Sutcliffe, Masashi Yokoyama, E. Poplawska, R. Poutissou, Hs Budd, P. Masliah, T. Szeglowski, Soo-Bong Kim, A. Longhin, Michael Litos, J. Marteau, O. Drapier, K. Iyogi, F. Moreau, E. D. Zimmerman, M. Iida, B. Morgan, M. A. Ward, Tomiyoshi Haruyama, J. M. Levy, L. L. Kormos, T. Kikawa, C. Touramanis, Kendall Mahn, Robert Henderson, A. Hatzikoutelis, H. Kaji, R. A. Johnson, Antonio Ereditato, H. Nishino, M. Zito, N. Yershov, A. Cazes, K. Zaremba, B. Kirby, I. Kreslo, J. Dumarchez, Kevin Scott McFarland, A. Cervera, Henry W. Sobel, V. Palladino, Tsuyoshi Nakaya, Takashi Kobayashi, M. Malek, J. Y. Kim, J. Kisiel, T. M. Raufer, T. Hasegawa, S. Mine, Y. Takeuchi, A. Delbart, J. D. Perkin, Scott Davis, D. Hansen, R. Sulej, Atsushi Takeda, Takaaki Kajita, G. D. Lopez, Oleg Mineev, K. Hamano, R. Castillo, Yuichi Oyama, T. Tsukamoto, S. J. Ives, R. P. Litchfield, Takayuki Tomaru, Masato Shiozawa, M. Ziembicki, S. Sabouri, Ken Sakashita, Norio Higashi, J. Zalipska, Minoru Otani, David Calvet, C. Strabel, S. Assylbekov, M. Siyad, V. Pettinacci, K. Gilje, A. Zalewska, Federico Sanchez, M. Fechner, A. Haesler, Fred Gannaway, Alexander Finch, D. Ruterbories, G. Wikström, S. Bhadra, Akitaka Ariga, Antonin Vacheret, W. R. Kropp, K. Kowalik, J. Marzec, C. Matsumura, D. Payne, T. Hara, J. F. Martin, M. Tzanov, C. J. Metelko, Koji Nakamura, M. Barbi, Hiroaki Aihara, G. Jover-Manas, A. Carver, Shigeki Aoki, P. N. Ratoff, T. Kutter, S. Giffin, A. N. Khotjantsev, Y. Fujii, W. Coleman, A. Gendotti, A. Missert, F. Bay, M. Miura, T. Ozaki, A. Muir, Kodai Matsuoka, P. Guzowski, A. Bravar, Frédéric Dufour, C. Yanagisawa, K. Nishikawa, G. P. Ward, I. T. Lim, R. Terri, J. Holeczek, P. Wanderer, J. J. Gomez-Cadenas, Michal Dziewiecki, Kazuhiro Yamamoto, Jan T. Sobczyk, K. Laihem, N. Kimura, H. Kubo, K. Nakajima, M. Tada, P. Gumplinger, R. L. Helmer, Gareth J. Barker, Kimihiro Okumura, K. Koseki, Y. Shimizu, Dmitriy Beznosko, D. G. Brook-Roberge, S. M. Oser, J. P. Coleman, Y. Seiya, J. Schwehr, Yasuo Ajima, T. McLachlan, S. Horikawa, A. Blondel, M. Goldhaber, S. Yamada, K. Ieki, D. Karlen, R. J. Wilkes, D. I. Scully, N. J. Buchanan, P. A. Rodrigues, E. Radicioni, M. L. Navin, H.A. Tanaka, Yoshinari Hayato, C. K. Jung, D. L. Wark, M. Y. Pac, Achim Stahl, J. L. Stone, D. Kielczewska, A. Dabrowska, A. D. Marino, J. M. Poutissou, C. Bronner, N. West, I. Kato, K. Kaneyuki, T. C. Nicholls, Gavin Davies, U. Dore, P. Stamoulis, A. Thorley, A. Korzenev, L. Ludovici, M. Sorel, A. Gaudin, W. Qian, T. Lindner, C. Densham, G. Kogan, G. De Rosa, S. Hastings, R. A. Owen, M. D. Haigh, A. Badertscher, M. Macaire, Y. Takenaga, M. J. Wilking, Rhiju Das, S. Dytman, B. Jamieson, J. L. Raaf, J. Bouchez, Thorsten Lux, O. Araoka, M. Gonin, L. Escudero, Kenichi Tanaka, J. Steinmann, K. Abe, R. Sacco, S. L. Cartwright, A. Terashima, C. McGrew, K. Connolly, C. Andreopoulos, D. Terhorst, T. Nakai, Jing Wang, E. Rondio, P. Dinh Tran, N. McCauley, K. Mizouchi, Viktor Matveev, M. Noy, N. Tanimoto, Iain Alexander Bertram, J. Imber, S. Moriyama, M. B. Smy, M. Shibata, A. Hyndman, J. Kameda, P. Przewlocki, P. F. Loverre, J. M. Roney, Lester D.R. Thompson, Y. Kouzuma, L. R. Sulak, M. Mezzetto, R.P. Kurjata, S. W. Bentham, I. Z. Danko, K. Sasaki, K. Tashiro, Koh Ueno, Katsuyu Kasami, Yasuhiro Makida, N. Kulkarni, C. Hearty, T. Sekiguchi, Tatsushi Nakamoto, Alastair Grant, Richard J.H. Smith, G. Mituka, A. Murakami, Yutaka Yamanoi, Hiroshi Yamaoka, A. Marchionni, S. Di Luise, F. Di Lodovico, A. Curioni, K. Hayashi, Barry L. Nelson, Yu. G. Kudenko, L. Monfregola, S. Koike, S. Manly, M. Vagins, B. Andrieu, C. Giganti, B. Still, J. A. Nowak, C. Ishihara, M. Dziomba, Eiichi Hirose, M. Posiadala, M. G. Catanesi, V. Kravtsov, S. Murphy, F. Retiere, Y. Totsuka, Susumu Takahashi, W. Metcalf, T. Wongjirad, S. Nakayama, A. Sarrat, S. Short, N. C. Hastings, D. Naples, A. Robert, A. Izmaylov, Steve K. Choi, J. Zmuda, M. Messina, A. V. Waldron, M. Besnier, J. Dobson, Joshua Hignight, Yoshihiro Suzuki, Robert Wilson, Takahiro Okamura, J. Argyriades, J. Beucher, A. Konaka, W. H. Toki, B. E. Berger, H. Kakuno, L. Zambelli, A. K. Ichikawa, Luigi Salvatore Esposito, Escudero Sanchez, Lorena [0000-0003-3464-9206], Whitehead, Leigh [0000-0002-3327-2534], Apollo - University of Cambridge Repository, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), Département d'Electronique, des Détecteurs et d'Informatique (ex SEDI) (DEDI), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, T2K, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Département d'Electronique, des Détecteurs et d'Informatique pour la Physique (ex SEDI) (DEDIP), Abgrall, Nicolas, Argyriades, Jeremy, Blondel, Alain, Bravar, Alessandro, Dufour, Fanny, Ferrero, Andréa, Haesler, Alexis, Korzenev, Alexander, Murphy, Sébastien, Ravonel Salzgeber, Melody, Wikstrom, Gustav, K., Abe, N., Abgrall, Y., Ajima, H., Aihara, J., Albert, C., Andreopoulo, B., Andrieu, S., Aoki, O., Araoka, J., Argyriade, A., Ariga, T., Ariga, S., Assylbekov, D., Autiero, A., Badertscher, M., Barbi, G., Barker, G., Barr, M., Ba, F., Bay, S., Bentham, V., Berardi, B., Berger, I., Bertram, M., Besnier, J., Beucher, D., Beznosko, S., Bhadra, F., Blaszczyk, A., Blondel, C., Bojechko, J., Bouchez, S., Boyd, A., Bravar, C., Bronner, D., Brook Roberge, N., Buchanan, H., Budd, D., Calvet, S., Cartwright, A., Carver, R., Castillo, M., Catanesi, A., Caze, A., Cervera, C., Chavez, S., Choi, G., Christodoulou, J., Coleman, W., Coleman, G., Collazuol, K., Connolly, A., Curioni, A., Dabrowska, I., Danko, R., Da, G., Davie, S., Davi, M., Day, DE ROSA, Gianfranca, J., de André, P., de Perio, A., Delbart, C., Densham, F., Di Lodovico, S., Di Luise, P., Dinh Tran, J., Dobson, U., Dore, O., Drapier, F., Dufour, J., Dumarchez, S., Dytman, M., Dziewiecki, M., Dziomba, S., Emery, A., Ereditato, L., Escudero, L., Esposito, M., Fechner, A., Ferrero, A., Finch, E., Frank, Y., Fujii, Y., Fukuda, V., Galymov, F., Gannaway, A., Gaudin, A., Gendotti, M., George, S., Giffin, C., Giganti, K., Gilje, T., Golan, M., Goldhaber, J., Gomez Cadena, M., Gonin, N., Grant, A., Grant, P., Gumplinger, P., Guzowski, A., Haesler, M., Haigh, K., Hamano, C., Hansen, D., Hansen, T., Hara, P., Harrison, B., Hartfiel, M., Hartz, T., Haruyama, T., Hasegawa, N., Hasting, S., Hasting, A., Hatzikouteli, K., Hayashi, Y., Hayato, C., Hearty, R., Helmer, R., Henderson, N., Higashi, J., Hignight, E., Hirose, J., Holeczek, S., Horikawa, A., Hyndman, A., Ichikawa, K., Ieki, M., Ieva, M., Iida, M., Ikeda, J., Ilic, J., Imber, T., Ishida, C., Ishihara, T., Ishii, S., Ive, M., Iwasaki, K., Iyogi, A., Izmaylov, B., Jamieson, R., Johnson, K., Joo, G., Jover Mana, C., Jung, H., Kaji, T., Kajita, H., Kakuno, J., Kameda, K., Kaneyuki, D., Karlen, K., Kasami, I., Kato, E., Kearn, M., Khabibullin, F., Khanam, A., Khotjantsev, D., Kielczewska, T., Kikawa, J., Kim, S., Kim, N., Kimura, B., Kirby, J., Kisiel, P., Kitching, T., Kobayashi, G., Kogan, S., Koike, A., Konaka, L., Kormo, A., Korzenev, K., Koseki, Y., Koshio, Y., Kouzuma, K., Kowalik, V., Kravtsov, I., Kreslo, W., Kropp, H., Kubo, Y., Kudenko, N., Kulkarni, R., Kurjata, T., Kutter, J., Lagoda, K., Laihem, M., Laveder, K., Lee, P., Le, J., Levy, C., Licciardi, I., Lim, T., Lindner, R., Litchfield, M., Lito, A., Longhin, G., Lopez, P., Loverre, L., Ludovici, T., Lux, M., Macaire, K., Mahn, Y., Makida, M., Malek, S., Manly, A., Marchionni, A., Marino, J., Marteau, J., Martin, T., Maruyama, T., Maryon, J., Marzec, P., Masliah, E., Mathie, C., Matsumura, K., Matsuoka, V., Matveev, K., Mavrokoridi, E., Mazzucato, N., Mccauley, K., Mcfarland, C., Mcgrew, T., Mclachlan, M., Messina, W., Metcalf, C., Metelko, M., Mezzetto, P., Mijakowski, C., Miller, A., Minamino, O., Mineev, S., Mine, A., Missert, G., Mituka, M., Miura, K., Mizouchi, L., Monfregola, F., Moreau, B., Morgan, S., Moriyama, A., Muir, A., Murakami, M., Murdoch, S., Murphy, J., Myslik, T., Nakadaira, M., Nakahata, T., Nakai, K., Nakajima, T., Nakamoto, K., Nakamura, S., Nakayama, T., Nakaya, D., Naple, M., Navin, B., Nelson, T., Nicholl, K., Nishikawa, H., Nishino, J., Nowak, M., Noy, Y., Obayashi, T., Ogitsu, H., Ohhata, T., Okamura, K., Okumura, T., Okusawa, S., Oser, M., Otani, R., Owen, Y., Oyama, T., Ozaki, M., Pac, Palladino, Vittorio, V., Paolone, P., Paul, D., Payne, G., Pearce, J., Perkin, V., Pettinacci, F., Pierre, E., Poplawska, B., Popov, M., Posiadala, J. M., Poutissou, R., Poutissou, P., Przewlocki, W., Qian, J., Raaf, E., Radicioni, P., Ratoff, T., Raufer, M., Ravonel, M., Raymond, F., Retiere, A., Robert, P., Rodrigue, E., Rondio, J., Roney, B., Rossi, S., Roth, A., Rubbia, D., Ruterborie, S., Sabouri, R., Sacco, K., Sakashita, F., Sánchez, A., Sarrat, K., Sasaki, K., Scholberg, J., Schwehr, M., Scott, D., Scully, Y., Seiya, T., Sekiguchi, H., Sekiya, M., Shibata, Y., Shimizu, M., Shiozawa, S., Short, M., Siyad, R., Smith, M., Smy, J., Sobczyk, H., Sobel, M., Sorel, A., Stahl, P., Stamouli, J., Steinmann, B., Still, J., Stone, C., Strabel, L., Sulak, R., Sulej, P., Sutcliffe, A., Suzuki, K., Suzuki, S., Suzuki, Y., Suzuki, T., Szeglowski, M., Szeptycka, R., Tacik, M., Tada, S., Takahashi, A., Takeda, Y., Takenaga, Y., Takeuchi, K., Tanaka, H., Tanaka, M., Tanaka, N., Tanimoto, K., Tashiro, I., Taylor, A., Terashima, D., Terhorst, R., Terri, L., Thompson, A., Thorley, W., Toki, T., Tomaru, Y., Totsuka, C., Touramani, T., Tsukamoto, M., Tzanov, Y., Uchida, K., Ueno, A., Vacheret, M., Vagin, G., Vasseur, T., Wachala, J., Walding, A., Waldron, C., Walter, P., Wanderer, J., Wang, M., Ward, G., Ward, D., Wark, M., Wascko, A., Weber, R., Wendell, N., West, L., Whitehead, G., Wikström, R., Wilke, M., Wilking, J., Wilson, R., Wilson, T., Wongjirad, S., Yamada, Y., Yamada, A., Yamamoto, K., Yamamoto, Y., Yamanoi, H., Yamaoka, C., Yanagisawa, T., Yano, S., Yen, N., Yershov, M., Yokoyama, A., Zalewska, J., Zalipska, L., Zambelli, K., Zaremba, M., Ziembicki, E., Zimmerman, M., Zito, J., ??muda, and Walter, Christopher W

Subjects
Particle physics, FOS: Physical sciences, General Physics and Astronomy, ddc:500.2, CHOOZ, 01 natural sciences, Particle identification, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), neutrino, 14.60.Pq, 13.15.+g, 25.30.Pt, 95.55.Vj, 0103 physical sciences, neutrino oscillation, Muon neutrino, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, Neutrino oscillation, GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries), ComputingMilieux_MISCELLANEOUS, Physics, NOνA, Tribimaximal mixing, hep-ex, 010308 nuclear & particles physics, T2K experiment, Física, T2K Collaboration, particle identification, Electron neutrino, experimental results
Abstract

The T2K experiment observes indications of $\nu_\mu\rightarrow \nu_e$ appearance in data accumulated with $1.43\times10^{20}$ protons on target. Six events pass all selection criteria at the far detector. In a three-flavor neutrino oscillation scenario with $|\Delta m_{23}^2|=2.4\times10^{-3}$ eV$^2$, $\sin^2 2\theta_{23}=1$ and $\sin^2 2\theta_{13}=0$, the expected number of such events is 1.5$\pm$0.3(syst.). Under this hypothesis, the probability to observe six or more candidate events is 7$\times10^{-3}$, equivalent to 2.5$\sigma$ significance. At 90% C.L., the data are consistent with 0.03(0.04)$, Comment: 20 pages, 6 figures, version published in PRL

Published
2011
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28. Indications of Neutrino Oscillation in a 250 km Long-Baseline Experiment

Author

David William Casper, C. W. Walter, Makoto Sakuda, C. Yanagisawa, Toshio Namba, M. H. Ahn, K. Martens, W. R. Kropp, Nobuyuki Sakurai, H. W. Sobel, S. Fukuda, Atsumu Suzuki, H. Maesaka, Takehisa Hasegawa, T. Iwashita, Minoru Yoshida, Y. Fukuda, S. H. Lim, S. B. Boyd, K. Nishikawa, S. Mine, J. L. Stone, Y. Takeuchi, K. Kaneyuki, Yuichi Oyama, E. Kearns, T. Inagaki, Shinya Yamada, Y. Totsuka, E. J. Jeon, M. Kohama, Shoei Nakayama, Koji Nakamura, S. Matsuno, H. I. Jang, Kazumasa Miyano, J. Hill, C. K. Jung, Masaya Hasegawa, M. Miura, S. B. Kim, Tomoyuki Maruyama, J. H. Choi, D. Kielczewska, Hwangseo Park, I. Kato, John G. Learned, Itsuo Nakano, L. R. Sulak, T. Ishida, A. Obayashi, E. Sharkey, Susumu Noda, H. C. Bhang, T. Ishii, N. Tamura, M. Y. Pac, Yasunari Suzuki, C. O. Kim, N. Sasao, J. S. Jang, H. Yokoyama, W. Gajewski, Kate Scholberg, Ken-ichiro Kobayashi, A. K. Ichikawa, T. Toshito, R. J. Wilkes, Shigetaka Moriyama, A. Kibayashi, J. Y. Kim, I. T. Lim, T. Hara, Shogo Nishiyama, J. Kameda, C. McGrew, M. Ishitsuka, H. So, Shigeki Aoki, J. Yoo, J. Zalipska, Takashi Kobayashi, A. Ikeda, Y. Hayato, A. L. Stachyra, Mark R. Vagins, Masato Shiozawa, Shoji Yamamoto, Tsuyoshi Nakaya, Y. Suga, F. Nakata, Beom Jun Kim, Yoshitaka Itow, Yusuke Koshio, T. Ooyabu, Masayuki Nakahata, Takaaki Kajita, C. Mauger, and A. Okada

Subjects
Physics, Tamura, Norio, Physics::Instrumentation and Detectors, Oscillation, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, High Energy Physics::Phenomenology, FOS: Physical sciences, General Physics and Astronomy, Solar neutrino problem, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), K2K experiment, Measurements of neutrino speed, High Energy Physics::Experiment, 田村, 詔生, Neutrino, Neutrino oscillation, Charged current
Abstract

The K2K experiment observes indications of neutrino oscillation: a reduction of $\nu_\mu$ flux together with a distortion of the energy spectrum. Fifty-six beam neutrino events are observed in Super-Kamiokande (SK), 250 km from the neutrino production point, with an expectation of $80.1^{+6.2}_{-5.4}$. Twenty-nine one ring $\mu$-like events are used to reconstruct the neutrino energy spectrum, which is better matched to the expected spectrum with neutrino oscillation than without. The probability that the observed flux at SK is explained by statistical fluctuation without neutrino oscillation is less than 1%., Comment: 5 pages, 3 figures embedded, LaTeX with RevTeX style, accepted for publication in PRL on December 13, 2002

Published
2003

29. Determination of solar neutrino oscillation parameters using 1496 days of Super-Kamiokande-I data

Author

Masatoshi Koshiba, Takashi Kobayashi, M. Ishitsuka, Shoichi Yamada, Takaaki Kajita, A. Kibayashi, L. R. Sulak, Shantanu Desai, Y. Ichikawa, K. Kobayashi, M. D. Messier, Y. Totsuka, T. Shibata, K. Kaneyuki, M. Takita, J. Shirai, S. Tasaka, W. E. Keig, Atsumu Suzuki, M. Earl, D. W. Liu, John G. Learned, M. Etoh, R. Nishimura, Makoto Sakuda, G. W. Sullivan, A. L. Stachyra, K. Miyano, C. W. Walter, Y. Nagashima, S. Matsuno, E. Sharkey, S. Dazeley, Hyosun Kim, D. Takemori, R. Svoboda, G. Guillian, R. W. Ellsworth, C. McGrew, A. M. Gago, K. Martens, S. Moriyama, C. Saji, J. Kameda, J. L. Stone, David William Casper, S. Nakayama, Yoshihiro Suzuki, T. Ishii, Kunio Inoue, Yoshitaka Itow, M. L. Chen, D. Turč, Y. Obayashi, J. A. Goodman, C. Mitsuda, K. S. Ganezer, T. Inagaki, Y. Kajiyama, S. Hatakeyama, R. J. Wilkes, M. Goldhaber, Y. Gando, M. Koike, Toshio Namba, Henry W. Sobel, K. Nitta, M. Ackermann, Y. Fukuda, E. Kearns, B. Viren, Koji Nakamura, S. Mine, Kyoshi Nishijima, Masayuki Nakahata, K. Nishikawa, M. Miura, Y. Takeuchi, Todd Haines, M. B. Smy, S. C. Boyd, T. Ishizuka, S. Fukuda, A. K. Ichikawa, Minoru Yoshida, C. Yanagisawa, H. Okazawa, K. Ishihara, A. Suzuki, M. Kohama, T. Iwashita, J. Hill, A. Okada, N. Sakurai, H. G. Berns, Alec Habig, Y. Watanabe, Mikio Morii, E. Blaufuss, Tsuyoshi Nakaya, C. K. Jung, C. Mauger, T. Toshito, J. Yoo, D. Kielczewska, Magdalena Malek, T. Maruyama, Masato Shiozawa, I. Kato, T. Barszczak, H. Takeuchi, Y. Hatakeyama, S. B. Kim, W. R. Kropp, Y. Oyama, Y. Hayato, Yusuke Koshio, Takehisa Hasegawa, Hirokazu Ishino, M. R. Vagins, W. Gajewski, and Kate Scholberg

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Standard solar model, Solar neutrino, High Energy Physics::Phenomenology, Solar neutrino problem, High Energy Physics - Experiment, Nuclear physics, Neutrino detector, High Energy Physics::Experiment, Neutrino, GALLEX, Super-Kamiokande, Neutrino oscillation
Abstract

A number of different fits to solar neutrino mixing and mass square difference were performed using 1496 days of Super-Kamiokande-I's solar neutrino data. These data select two allowed areas at large neutrino mixing when combined with either the solar $^8$B flux prediction of the standard solar model or the SNO interaction rate measurements. A global fit combining SK data with the solar neutrino interaction rates measured by Homestake, SNO, Gallex/GNO and SAGE prefers a single allowed area, the Large Mixing Angle solution, at the 98.9% confidence level. The mass square difference $\Delta m^2$ between the two mass eigenstates ranges from about 3 to $19\times10^{-5}$eV$^2$, while the mixing angle $\theta$ is in the range of $\tan^2\theta\approx$0.25--0.65., Comment: 10 Pages, 4 figures, submitted to Physics Letters B

Published
2002
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30. 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
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31. Search for Trilepton Nucleon Decay viap→e+ννandp→μ+ννin the Super-Kamiokande Experiment

Author

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

Subjects
Physics, Nuclear physics, Particle physics, General Physics and Astronomy, Grand Unified Theory, Nucleon, Super-Kamiokande
Abstract

The trilepton nucleon decay modes p→e+νν and p→μ+νν violate |Δ(B-L)| by two units. Using data from a 273.4 kt yr exposure of Super-Kamiokande a search for these decays yields a fit consistent with no signal. Accordingly, lower limits on the partial lifetimes of τp→e+νν>1.7×10(32) years and τp→μ+νν>2.2×10(32) years at a 90% confidence level are obtained. These limits can constrain Grand Unified Theories which allow for such processes.

Published
2014
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32. FPGA-based Trigger/DAQ system for the MTV experiment at TRIUMF

Author

S. Ozaki, Y. Sakamoto, R. Tanuma, Y. Nakaya, Saki Tanaka, H. Baba, T. Yoshida, J. Murata, and Y. Totsuka

Subjects
Physics, Nuclear physics, Data acquisition, Scattering, media_common.quotation_subject, Polarimetry, Field-programmable gate array, Polarization (waves), Asymmetry, Particle detector, VMEbus, media_common
Abstract

T The MTV (Mott polarimetry for T-Violation) experiment at TRIUMF aims to search a large T-violation in nuclear beta decay outside of the Standard Model. The T-violating transverse polarization of the emitted electrons is measured as left-right scattering asymmetry in backward scattering event by a thin metal foil. The present experiment requires high statistical and systematic precision. In order to achieve a high statistical precision, a high speed-triggering and DAQ system is required. To satisfy the requirements, the FPGA-based Trigger/DAQ system has been developed by the general purpose VME board. The details of the system and performance test results will be reported in this paper.

Published
2014
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33. MTV/MTV-G Experiment at TRIUMF Search of T-Violation and Gravity Signal at Nuclear Scale

Author

K. Ninomiya, Y. Nakaya, J. Onishi, Phil Levy, John A. Behr, Hidetada Baba, R. Tanuma, Mathew Pearson, Reiya Narikawa, Saki Tanaka, J. Murata, Hirokazu Kawamura, Shuntaro Saiba, Y. Totsuka, T. Iguri, and R. Openshaw

Subjects
Physics, Nuclear physics, Gravitation, Thomas precession, Gravitational field, Polarimetry, Polarimeter, Electron, Polarization (waves), Geodetic effect
Abstract

The MTV-G (MTV-Gravity) experiment is aiming to detect a strong gravitational field at around nuclear scale, utilizing an electron polarimeter of the MTV (Mott Polarimetry for T-Violation) experiment [1], which is searching a large T-Violating electron transverse polarization emitted in polarized Li-8 beta decay. The MTV experiment is running at TRIUMF-ISAC since 2009, yielding the highest precision test of T-Violation. The extreme sensitivity of the MTV polarimeter gives us an opportunity to perform a new type of gravity experiment. A modification of gravitational inverse square law at a microscopic scale is predicted by a large extra-dimension model in order to explain the hierarchy problem. The strong gravitational field can be detected as a large spin precession of electrons scattered from nuclei, caused by the “Geodetic precession” as a result of a warped space-time around the nuclear mass. In this experiment, longitudinal polarization of electrons emitted from a 90 Sr source is transferred into a transverse polarization via electromagnetic Thomas precession and possibly via the Geodetic precession.

Published
2014
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34. Report of the Next Generation TRIUMF-MTV Experiment Run-IV Using Cylindrical Drift Chamber

Author

J. Onishi, Shuntaro Saiba, M. Ikeda, M. R. Pearson, J. Murata, Hirokazu Kawamura, Y. Totsuka, R. Tanuma, Reiya Narikawa, Saki Tanaka, E. Seitaibashi, John Behr, T. Iguri, H. Baba, K. Ninomiya, P. Levy, Y. Nakaya, and R. Openshaw

Subjects
Nuclear physics, Physics, Spectrum analyzer, Transverse plane, Scattering, media_common.quotation_subject, Polarimetry, Polarimeter, Electron, Nuclear Experiment, Polarization (waves), Asymmetry, media_common
Abstract

th , 2013) The MTV (Mott polarimetry for T-Violation) experiment is running from 2009 at TRIUMF, which aims to search a large non-standard T-Violation in polarized nuclear beta decay. Existence of a large transverse polarization of electrons emitted from polarized Li-8 nuclei, which are produced at TRIUMF-ISAC and stopped inside an aluminum stopper, is investigated. We utilize a Mott polarimeter consists of a CDC (Cylindrical Drift Chamber), measuring backward scattering left-right asymmetry from a thin lead analyzer foil. In this paper, results from the final performance test run using CDC performed in 2012 are described.

Published
2014
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35. Search of non-standard strong gravity at nuclear scale using electron spin geodetic precession

Author

Matthew Pearson, Saki Tanaka, R. Tanuma, Reiya Narikawa, Y. Totsuka, J. Onishi, J. Murata, R. Openshaw, Y. Nakaya, K. Ninomiya, and Shuntaro Saiba

Subjects
Nuclear physics, Gravitation, Physics, Gravitational field, Strong gravity, QC1-999, Electron, Polarization (waves), Yukawa interaction, Geodetic effect, Exotic atom
Abstract

The MTV-G project was started in 2011 to explore a strong gravitational field at a nuclear scale in an electron double scattering experiment, utilizing an experimental technique of the MTV experiment, which searches a electron’s T-Violating transverse polarization in nuclear beta decay at TRIUMF-ISAC. In addition to this new experiment, we have also performed a re-analysis of spectroscopic data of exotic atoms, in a gravitational point of view. From these two studies, we set new constraints on possible new Yukawa interaction at sub-mm scale, as a test of gravitational inverse square law.

Published
2014

36. T-Violation experiment at TRIUMF-ISAC using polarized 8Li

Author

Y. Nakaya, Hirokazu Kawamura, R. Openshaw, M. Ikeda, R. Kishi, John Behr, Shuntaro Saiba, M. R. Pearson, K. Ninomiya, R. Tanuma, Reiya Narikawa, J. Onishi, H. Baba, J. Murata, E. Seitaibashi, C. D. P. Levy, Y. Totsuka, T. Iguri, Saki Tanaka, and T. Toyoda

Subjects
Physics, Nuclear physics, Physics beyond the Standard Model, QC1-999, Polarimetry, Astrophysics, Triple correlation, Symmetry (physics)
Abstract

Motivated by a search for a new physics beyond the standard model, the MTV experiment (Mott Polarimetry for T-Violation Experiment) is intended to achieve the highest precision test of time-reversal symmetry in polarized nuclear beta decay by measuring a triple correlation (the R -correlation). The first physics run of the MTV experiment was performed in 2010 at TRIUMF-ISAC. This paper gives preliminary results and describes the next generation setup, which involves a cylindrical drift chamber.

Published
2014

37. Limits on sterile neutrino mixing using atmospheric neutrinos in Super-Kamiokande

Author

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

Subjects
Nuclear and High Energy Physics, Particle physics, Sterile neutrino, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, FOS: Physical sciences, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, 010306 general physics, Neutrino oscillation, Mixing (physics), Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Física, Solar neutrino problem, High Energy Physics - Phenomenology, High Energy Physics::Experiment, Neutrino, Atmospheric neutrino, Super-Kamiokande
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, We present limits on sterile neutrino mixing using 4,438 live-days of atmospheric neutrino data from the Super-Kamiokande experiment. We search for fast oscillations driven by an eV2-scale mass splitting and for oscillations into sterile neutrinos instead of tau neutrinos at the atmospheric mass splitting. When performing both of these searches we assume that the sterile mass splitting is large, allowing sin2(Δm2L/4E) to be approximated as 0.5, and we assume that there is no mixing between electron neutrinos and sterile neutrinos (|Ue4|2=0). No evidence of sterile oscillations is seen and we limit |Uμ4|2 to less than 0.041 and |Uτ4|2 to less than 0.18 for Δm2>0.1eV2 at the 90% C.L. in a 3+1 framework. The approximations that can be made with atmospheric neutrinos allow these limits to be easily applied to 3+N models, and we provide our results in a generic format to allow comparisons with other sterile neutrino models, 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
2014
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38. Constraints on Neutrino Oscillations Using 1258 Days of Super-Kamiokande Solar Neutrino Data

Author

Hirokazu Ishino, H. Takeuchi, K. Kaneyuki, Makoto Sakuda, M. Ishitsuka, K. Martens, K. Kobayashi, S. Matsuno, T. Shibata, Minoru Yoshida, David William Casper, Shantanu Desai, Y. Ichikawa, A. Sakai, Y. Takeuchi, J. L. Stone, E. Blaufuss, S. Nakayama, John G. Learned, Henry W. Sobel, K. Nitta, D. Turcan, R. W. Ellsworth, Kyoshi Nishijima, A. L. Stachyra, K. Miyano, Y. Watanabe, D. Takemori, M. Etoh, G. Guillian, S. Moriyama, T. Ishii, Kunio Inoue, Tomoyuki Maruyama, C. W. Walter, T. Inagaki, Y. Hatakeyama, M. Goldhaber, B. Viren, J. Hill, M. Morii, S. Tasaka, W. E. Keig, Shoichi Yamada, Takaaki Kajita, Koji Nakamura, T. Toshito, Soo-Bong Kim, M. Takita, L. R. Price, J. Shirai, C. Yanagisawa, D. W. Liu, Yoshitaka Itow, C. K. Jung, Y. Fukuda, E. Kearns, Todd Haines, Atsumu Suzuki, D. Kielczewska, M. Miura, Takehisa Hasegawa, E. Sharkey, G. W. Sullivan, S. Fukuda, M. Koike, S. Dazeley, Masayuki Nakahata, K. Nishikawa, C. McGrew, Magdalena Malek, M. R. Vagins, N. Sakurai, A. Okada, H. Okazawa, K. Ishihara, W. Gajewski, Kate Scholberg, Yoshihiro Suzuki, H. Fujiyasu, Y. Nagashima, Y. Kajiyama, J. Kameda, K. S. Ganezer, K. B. Lee, Alec Habig, Y. Totsuka, C. Saji, J. A. Goodman, M. Earl, Takashi Kobayashi, S. C. Boyd, T. Ishizuka, Masatoshi Koshiba, Y. Obayashi, A. Kibayashi, L. R. Sulak, C. Mitsuda, R. Svoboda, R. J. Wilkes, U. Golebiewska, K. K. Young, S. Mine, M. B. Smy, M. D. Messier, M. Kohama, Heekyong Kim, C. Mauger, J. Yoo, Masato Shiozawa, T. Barszczak, Y. Gando, W. R. Kropp, A. Suzuki, Tsuyoshi Nakaya, Y. Oyama, Y. Hayato, and Yusuke Koshio

Subjects
Physics, Particle physics, Astrophysics::High Energy Astrophysical Phenomena, Solar neutrino, High Energy Physics::Phenomenology, General Physics and Astronomy, Flux, Solar neutrino problem, High Energy Physics - Experiment, Nuclear physics, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino, Super-Kamiokande, Neutrino oscillation, Zenith
Abstract

We report the result of a search for neutrino oscillations using precise measurements of the recoil electron energy spectrum and zenith angle variations of the solar neutrino flux from 1258 days of neutrino-electron scattering data in Super-Kamiokande. The absence of significant zenith angle variation and spectrum distortion places strong constraints on neutrino mixing and mass difference in a flux-independent way. Using the Super-Kamiokande flux measurement in addition, two allowed regions at large mixing are found., Comment: 6 pages, 4 figures, submitted to PRL

Published
2001
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39. Observation of atmospheric neutrinos

Author

Y. Totsuka and Takaaki Kajita

Subjects
Physics, Particle physics, Muon, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, General Physics and Astronomy, Elementary particle, Fermion, Nuclear physics, Baryon, Massless particle, High Energy Physics::Experiment, Neutrino, Neutrino oscillation, Lepton
Abstract

Atmospheric neutrinos arise from the decay of secondaries (π, K and μ) produced by primary cosmic-ray interactions in the atmosphere. In the energy range below 1GeV, where all secondaries decay, we roughly expect that (v μ + v μ )/(v e + v e ) ≃2. This is because a π-decay produces a v μ and a μ; the μ, when it decays, produces another v μ and a v e . These neutrinos enter into the detector from all directions nearly isotropically. The path length of the neutrinos (from the production point to the detector) ranges from a few km to 13000km, the diameter of the earth. In this article we describe recent measurements of atmospheric neutrinos by large underground detectors. Some of the experiments have observed that the (v μ + v μ )/(v e + v e ) ratio is significantly smaller than expected. The interpretation of these interesting results, the future prospect on atmospheric neutrinos and related neutrino physics are also described. In most parts of this article, when mention is made of neutrinos, we imply both neutrinos and antineutrinos.

Published
2001
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40. Search for Proton Decay throughp→ν¯K+in a Large Water Cherenkov Detector

Author

C. W. Walter, C. Mauger, M. Koshiba, A. Okada, T. Kobayashi, Y. Hatakeyama, K. Nakamura, John G. Learned, T. Futagami, M. R. Vagins, Ko Okumura, J. Hill, V. J. Stenger, S. Kasuga, Y. Fukuda, Yuichi Oyama, G. W. Sullivan, T. Hayakawa, Ken-ichiro Kobayashi, A. T. Suzuki, Masayuki Nakahata, F. Tsushima, Akira Hasegawa, Y. Takeuchi, K. Ishihara, David William Casper, Makoto Sakuda, Kunio Inoue, S. Mine, A. Sakai, Nobuyuki Sakurai, L. R. Price, J. Shirai, Yoshitaka Itow, K. Martens, M. Kirisawa, Hiroshi Ogawa, J. S. George, Y. Kanaya, K. Nishikawa, M. Koike, H. W. Sobel, Yasunari Suzuki, M. Nemoto, J. L. Stone, K. Higuchi, Shigeki Tasaka, E. Sharkey, J. Kameda, S. Hatakeyama, Osamu Sasaki, Takehisa Hasegawa, Y. Watanabe, L. R. Sulak, R. Sanford, S. Inaba, M. B. Smy, Takaaki Kajita, H. Ishino, J. A. Goodman, Kazumasa Miyano, D. Takemori, M. Takahata, Y. Kobayashi, E. Blaufuss, S. Nakayama, K. Kaneyuki, C. Saji, M. Etoh, W. Doki, H. Okazawa, K. S. Ganezer, W. Gajewski, Kate Scholberg, D. Kielczewska, Y. Totsuka, C. McGrew, M. Earl, T. Ishii, Alec Habig, H. Fujiyasu, S. Matsuno, M. Koga, Minoru Yoshida, L. Wai, Tomoyuki Maruyama, T. J. Haines, Y. Obayashi, M. Takita, M. Miura, Takashi Yamaguchi, B. Viren, M. Takahashi, W. R. Kropp, S. Yamada, M. D. Messier, S. Echigo, R. J. Wilkes, K. K. Young, C. Yanagisawa, K. Nishijima, R. W. Ellsworth, A. Kibayashi, Y. Nagashima, H. Takeuchi, B. K. Kim, W. E. Keig, M. L. Chen, M. Goldhaber, Y. Hayato, T. Iwamoto, Yusuke Koshio, S. B. Kim, A. L. Stachyra, M. Kohama, C. K. Jung, Masato Shiozawa, T. Barszczak, E. Kearns, A. Suzuki, R. Svoboda, and Junichi Kanzaki

Subjects
Nuclear physics, Physics, Particle physics, Proton, Proton decay, Cherenkov detector, law, High Energy Physics::Phenomenology, General Physics and Astronomy, High Energy Physics::Experiment, Neutrino, Lower limit, law.invention
Abstract

We present results of a search for proton decays, $p\ensuremath{\rightarrow}\overline{\ensuremath{\nu}}{K}^{+}$, using data from a $33\mathrm{kt}\ifmmode \dot{}\else \.{}\fi{}\mathrm{yr}$ exposure of the Super-Kamiokande detector. Two decay modes of the kaon, ${K}^{+}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}{\ensuremath{\nu}}_{\ensuremath{\mu}}$ and ${K}^{+}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{0}$, were studied. The data were consistent with the background expected from atmospheric neutrinos; therefore a lower limit on the partial lifetime of the proton $\ensuremath{\tau}/B(p\ensuremath{\rightarrow}\overline{\ensuremath{\nu}}{K}^{+})$ was found to be $6.7\ifmmode\times\else\texttimes\fi{}{10}^{32}\mathrm{years}$ at $90%$ confidence level.

Published
1999
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41. Measurement of the Flux and Zenith-Angle Distribution of Upward Throughgoing Muons by Super-Kamiokande

Author

L. R. Price, J. Shirai, E. Sharkey, C. K. Jung, S. Mine, M. Takahata, D. Kielczewska, J. W. Flanagan, Y. Kanaya, Hiroshi Ogawa, Takehisa Hasegawa, Y. Hayato, Y. Watanabe, R. Sanford, J. A. Goodman, Kazumasa Miyano, Minoru Yoshida, H. Okazawa, T. Iwamoto, Ken-ichiro Kobayashi, David William Casper, E. Ichihara, C. W. Walter, Yuichi Oyama, F. Tsushima, Todd Haines, W. Doki, S. Hatakeyama, Takaaki Kajita, H. Ishino, A. Sakai, Yusuke Koshio, L. Wai, Michael B. Smy, Nobuyuki Sakurai, W. E. Keig, Mark R. Vagins, Tomoyuki Maruyama, T. Kobayashi, C. Mauger, Makoto Sakuda, Junichi Kanzaki, K. Nakamura, J. Kameda, B. Viren, M. Miura, Frederick Reines, Ko Okumura, Masatoshi Koshiba, T. Hayakawa, S. Matsuno, T. Ishii, M. D. Messier, Soo-Bong Kim, S. Kasuga, Y. Fukuda, M. Goldhaber, S. Echigo, Yasunari Suzuki, K. Martens, V. J. Stenger, A. Suzuki, R. Svoboda, A. Okada, S. Tasaka, W. R. Kropp, Atsumu Suzuki, A. Kibayashi, Masayuki Nakahata, Y. Totsuka, J. L. Stone, C. Yanagisawa, K. Fujita, E. Kearns, M. L. Chen, W. Gajewski, Kate Scholberg, Kunio Inoue, C. McGrew, K. Ishihara, M. Takita, Y. Takeuchi, K. Kaneyuki, C. Saji, M. Earl, E. Blaufuss, Shinya Yamada, M. Etoh, Masato Shiozawa, K. S. Ganezer, A. L. Stachyra, John G. Learned, Yoshitaka Itow, T. Barszczak, Kyoshi Nishijima, Takashi Yamaguchi, R. W. Ellsworth, R. A. Doyle, T. Futagami, R. J. Wilkes, K. K. Young, Y. Kobayashi, G. W. Sullivan, M. Kohama, Alec Habig, J. S. George, M. Nemoto, L. R. Sulak, M. Koga, H. W. Sobel, Osamu Sasaki, D. Takemori, Shoei Nakayama, K. Nishikawa, J. Hill, Y. Nagashima, B. K. Kim, and Akira Hasegawa

Subjects
Physics, Muon, Astrophysics::High Energy Astrophysical Phenomena, General Physics and Astronomy, Flux, High Energy Physics - Experiment, Nuclear physics, Distribution (mathematics), Angular distribution, Muon flux, High Energy Physics::Experiment, Atomic physics, Super-Kamiokande, Zenith, Energy (signal processing)
Abstract

A total of 614 upward through-going muons of minimum energy 1.6 GeV are observed by Super-Kamiokande during 537 detector live days. The measured muon flux is 1.74+/-0.07(stat.)+/-0.02(sys.)x10^{-13}cm^{-2}s^{-1}sr^{-1} compared to an expected flux of 1.97+/-0.44(theo.)x10^{-13}cm^{-2}s^{-1}sr^{-1}. The absolute measured flux is in agreement with the prediction within the errors. However, the zenith angle dependence of the observed upward through-going muon flux does not agree with no-oscillation predictions. The observed distortion in shape is consistent with the \nu_\mu \nu_\tau oscillation hypothesis with \sin^22\theta > 0.4 and 1x10^{-3} < \Delta m^2 < 1x10^{-1} eV^{2} at 90% confidence level., Comment: 8 pages w/ 3 figures new version contains minor fixes, as it appears in PRL

Published
1999
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42. Constraints on Neutrino Oscillation Parameters from the Measurement of Day-Night Solar Neutrino Fluxes at Super-Kamiokande

Author

Frederick Reines, K. Ishihara, T. Kobayashi, Kazumasa Miyano, M. Takita, Atsumu Suzuki, Shoei Nakayama, C. W. Walter, Todd Haines, Y. Totsuka, D. Takemori, E. Kearns, John G. Learned, W. Doki, C. K. Jung, M. Takahata, D. Kielczewska, Takaaki Kajita, H. Ishino, Y. Nagashima, T. Hasagawa, Takashi Yamaguchi, A. Suzuki, V. J. Stenger, C. Mauger, K. Nishikawa, T. Futagami, Y. Kanaya, T. Ishii, M. D. Messier, S. Tasaka, J. S. George, J. Hill, G. W. Sullivan, S. Echigo, R. A. Doyle, B. K. Kim, J. Hsu, K. Kaneyuki, P. G. Halverson, Soo-Bong Kim, M. Goldhaber, C. Saji, S. Kasuga, Y. Fukuda, R. Svoboda, M. Earl, M. Kohama, Minoru Yoshida, J. A. Goodman, W. R. Kropp, L. Wai, A. Okada, Y. Watanabe, R. Sanford, Y. Takeuchi, L. R. Sulak, R. J. Wilkes, Tomoyuki Maruyama, Shinya Yamada, Z. Conner, K. Fujita, K. K. Young, J. L. Stone, H. Okazawa, Y. Hayato, E. Blaufuss, K. Nakamura, David William Casper, C. Yanagisawa, Ken-ichiro Kobayashi, E. Ichihara, T. Iwamoto, H. W. Sobel, Michael B. Smy, S. Mine, A. Sakai, Yoshitaka Itow, M. Miura, Nobuyuki Sakurai, J. W. Flanagan, Yuichi Oyama, Hiroshi Ogawa, Masayuki Nakahata, T. Hayakawa, M. Etoh, A. L. Stachyra, Yusuke Koshio, F. Tsushima, W. E. Keig, Mark R. Vagins, B. Viren, K. S. Ganezer, J. Kameda, Y. Kobayashi, Osamu Sasaki, Masato Shiozawa, M. L. Chen, S. Hatakeyama, W. Gajewski, Kate Scholberg, R. W. Ellsworth, Ko Okumura, T. Barszczak, Masatoshi Koshiba, A. Kibayashi, Kunio Inoue, Kyoshi Nishijima, Makoto Sakuda, K. Martens, Junichi Kanzaki, C. McGrew, S. Matsuno, Yasunari Suzuki, Alec Habig, M. Koga, Akira Hasegawa, L. R. Price, J. Shirai, E. Sharkey, and M. Nemoto

Subjects
Physics, Sterile neutrino, Physics::Instrumentation and Detectors, Solar neutrino, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, General Physics and Astronomy, FOS: Physical sciences, Solar neutrino problem, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Neutrino detector, Measurements of neutrino speed, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Neutrino, Neutrino oscillation, Super-Kamiokande
Abstract

A search for day-night variations in the solar neutrino flux resulting from neutrino oscillations has been carried out using the 504 day sample of solar neutrino data obtained at Super-Kamiokande. The absence of a significant day-night variation has set an absolute flux independent exclusion region in the two neutrino oscillation parameter space., Comment: 11 pages, 3 figures, submitted to PRL, single-spacing

Published
1999

43. Measurement of the Solar Neutrino Energy Spectrum Using Neutrino-Electron Scattering

Author

L. R. Price, J. Shirai, D. Takemori, J. Hill, Yuichi Oyama, C. Yanagisawa, C. K. Jung, M. Takahata, M. Takita, D. Kielczewska, Y. Totsuka, E. Sharkey, Y. Nagashima, Takaaki Kajita, H. Ishino, W. E. Keig, Mark R. Vagins, C. W. Walter, R. W. Ellsworth, E. Blaufuss, Masatoshi Koshiba, F. Tsushima, M. Earl, Takashi Yamaguchi, A. Kibayashi, T. Ishii, M. D. Messier, B. K. Kim, M. Goldhaber, B. Viren, Yohei Kobayashi, M. Etoh, J. Hsu, S. Echigo, P. G. Halverson, W. R. Kropp, K. S. Ganezer, Makoto Sakuda, K. Nakamura, David William Casper, A. T. Suzuki, R. J. Wilkes, Y. Kanaya, E. Ichihara, Soo-Bong Kim, Y. Hayato, K. Fujita, C. McGrew, E. Kearns, K. K. Young, S. Kasuga, K. Martens, Y. Watanabe, A. Sakai, R. Sanford, Y. Fukuda, Masayuki Nakahata, T. Iwamoto, Y. Takeuchi, Yusuke Koshio, M. Nemoto, H. Okazawa, S. Hatakeyama, Shinya Yamada, Z. Conner, S. Nakayama, K. Kaneyuki, C. Saji, Michael B. Smy, L. R. Sulak, S. Matsuno, Junichi Kanzaki, R. A. Doyle, Yasunari Suzuki, Todd Haines, S. Mine, N. Sakurai, A. L. Stachyra, C. Mauger, Alec Habig, K. Nishikawa, M. Koga, A. Okada, J. W. Flanagan, Masato Shiozawa, M. Kohama, Hiroshi Ogawa, J. L. Stone, T. Barszczak, J. S. George, J. A. Goodman, V. J. Stenger, Takehisa Hasegawa, A. Suzuki, R. Svoboda, Ko Okumura, Kunio Inoue, T. Kobayashi, W. Gajewski, Kate Scholberg, Frederick Reines, K. Ishihara, L. Wai, Tomoyuki Maruyama, H. W. Sobel, Osamu Sasaki, Kyoshi Nishijima, T. Hayakawa, Minoru Yoshida, G. W. Sullivan, John G. Learned, M. Miura, T. Futagami, Ken-ichiro Kobayashi, Yoshitaka Itow, J. Kameda, M. L. Chen, Kazumasa Miyano, W. Doki, S. Tasaka, and Akira Hasegawa

Subjects
Physics, Particle physics, Scattering, Physics::Instrumentation and Detectors, Solar neutrino, General Physics and Astronomy, Solar neutrino problem, High Energy Physics - Experiment, Nuclear physics, Recoil, Neutrino detector, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino, Neutrino oscillation
Abstract

A measurement of the energy spectrum of recoil electrons from solar neutrino scattering in the Super--Kamiokande detector is presented. The results shown here are obtained from 504 days of data taken between the 31st of May, 1996 and the 25th of March, 1998. The shape of the measured spectrum is compared with the expectation for solar B8 neutrinos. The comparison takes into account both kinematic and detector related effects in the measurement process. The spectral shape comparison between the observation and the expectation gives a chi-square of 25.3 with 15 degrees of freedom, corresponding to a 4.6% confidence level., Comment: 12 pages, 3 figures

Published
1999

44. Calibration of Super-Kamiokande using an electron LINAC

Author

S. Matsuno, Ko Okumura, B. Viren, Akira Hasegawa, L. R. Price, J. Shirai, C. W. Walter, Shigeki Tasaka, E. Sharkey, Hiroshi Ogawa, Takehisa Hasegawa, Y. Nagashima, B. K. Kim, W. R. Kropp, J. A. Goodman, David William Casper, E. Ichihara, Kunio Inoue, Makoto Sakuda, Soo-Bong Kim, S. Kasuga, Y. Fukuda, K. Fujita, A. Sakai, Nobuyuki Sakurai, Y. Hayato, Tomoyuki Maruyama, Takaaki Kajita, H. Ishino, Masatoshi Koshiba, A. Kibayashi, Y. Takeuchi, T. Iwamoto, A. Okada, K. Nishikawa, Shinya Yamada, Y. Totsuka, Yuichi Oyama, C. K. Jung, M. Takahata, T. Ishii, J.W Flanagan, H. Kobayashi, V. J. Stenger, S Mine, Michael B. Smy, D. Kielczewska, Y. Kobayashi, Yusuke Koshio, Z. Conner, Masayuki Nakahata, W. Gajewski, Kate Scholberg, John G. Learned, Atsumu Suzuki, F. Tsushima, A. L. Stachyra, D. Takemori, M. Etoh, E. Kearns, T. Futagami, Alec Habig, Yasunari Suzuki, J. Hsu, M. Earl, M. Koga, L. Wai, Minoru Yoshida, M. Nemoto, Frederick Reines, C. Mauger, M. Goldhaber, K. S. Ganezer, G. W. Sullivan, K. Kaneyuki, C. Saji, Mark R. Vagins, H. Okazawa, E. Blaufuss, Masato Shiozawa, J. S. George, L. R. Sulak, R. A. Doyle, C. Yanagisawa, S. Hatakeyama, T. J. Haines, T. Barszczak, Kyoshi Nishijima, M. Miura, K. Martens, R. W. Ellsworth, Ken-ichiro Kobayashi, Y. Kanaya, J. Kameda, K. Ishihara, T. Hayakawa, M. L. Chen, Y. Watanabe, R. Sanford, M. Kohama, M. Takita, C. McGrew, Shoei Nakayama, J. Hill, J. L. Stone, Koji Nakamura, Takashi Yamaguchi, Junichi Kanzaki, H. W. Sobel, Osamu Sasaki, A. Suzuki, R. Svoboda, T. Kobayashi, P. G. Halverson, R. J. Wilkes, K. K. Young, Yoshitaka Itow, M. D. Messier, S. Echigo, Kazumasa Miyano, W. Doki, and W. E. Keig

Subjects
Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Solar neutrino, Detector, Solar neutrino problem, Linear particle accelerator, High Energy Physics - Experiment, Nuclear physics, Neutrino detector, Physics::Accelerator Physics, High Energy Physics::Experiment, Neutrino, Neutrino oscillation, Super-Kamiokande, Instrumentation
Abstract

In order to calibrate the Super-Kamiokande experiment for solar neutrino measurements, a linear accelerator (LINAC) for electrons was installed at the detector. LINAC data were taken at various positions in the detector volume, tracking the detector response in the variables relevant to solar neutrino analysis. In particular, the absolute energy scale is now known with less than 1 percent uncertainty., Comment: 24 pages, 16 figures, Submitted to NIM A

Published
1999
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45. Measurements of the Solar Neutrino Flux from Super-Kamiokande's First 300 Days

Author

T. Hayakawa, R. A. Doyle, T. Yamaguchi, J. A. Goodman, C. McGrew, M. Kohama, Y. Hayato, John G. Learned, T. Futagami, T. Ishizuka, A. T. Suzuki, Masayuki Nakahata, T. Iwamoto, M. Ota, S. Hatakeyama, Yusuke Koshio, R. W. Ellsworth, G. W. Sullivan, Minoru Yoshida, W. E. Keig, Mark R. Vagins, Masatoshi Koshiba, H. Okazawa, H. W. Sobel, Ko Okumura, M. Masuzawa, A. Kibayashi, Y. Totsuka, Osamu Sasaki, J. L. Stone, Yohei Kobayashi, M. Miura, Makoto Sakuda, J. T. Hong, H. Koga, Y. Kitaguchi, Yuichi Oyama, T. Kinebuchi, S. B. Kim, N. Sakurai, Y. Takeuchi, Takaaki Kajita, H. Ishino, M. Goldhaber, Kunio Inoue, Masaki Mori, M. Earl, T. Maruyama, Frederick Reines, T. Ishii, W. R. Kropp, Akira Hasegawa, F. Tsushima, J. Hsu, K. Nakamura, Shinya Yamada, Z. Conner, J. S. George, J. W. Flanagan, Hiroshi Ogawa, K. Kobayashi, Kyoshi Nishijima, S. Nakayama, M. D. Messier, S. Echigo, A. Kusano, S. Matsuno, J. Kameda, Yasunari Suzuki, L. Wai, M. L. Chen, Takehisa Hasegawa, K. Nishikawa, K. Ishihara, M. Takita, P. G. Halverson, Todd Haines, L. R. Price, A. L. Stachyra, D. Takemori, M. Etoh, C. W. Walter, K. Martens, J. Hill, K. S. Ganezer, C. Mauger, Y. Kanaya, E. Sharkey, Y. Watanabe, R. Sanford, B. Viren, A. Okada, M. Nemoto, C. K. Jung, M. Takahata, S. Kasuga, T. Kobayashi, D. Kielczewska, Y. Fukuda, M. Oketa, Kazumasa Miyano, L. R. Sulak, W. Doki, E. Ichihara, W. Gajewski, Kate Scholberg, S. Tasaka, A. Sakai, Yoshitaka Itow, K. Fujita, Alec Habig, M. Koga, Y. Nagashima, A. Suzuki, R. Svoboda, E. Blaufuss, V. J. Stenger, Junichi Kanzaki, Masato Shiozawa, T. Barszczak, E. Kearns, J. Wilkes, K. Kaneyuki, C. Saji, K. K. Young, and C. Yanagisawa

Subjects
Physics, Standard solar model, Particle physics, Solar neutrino, General Physics and Astronomy, Flux, Electron, High Energy Physics - Experiment, Nuclear physics, Constant rate, Recoil, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Super-Kamiokande, Energy (signal processing)
Abstract

The first results of the solar neutrino flux measurement from Super-Kamiokande are presented. The results shown here are obtained from data taken between the 31st of May, 1996, and the 23rd of June, 1997. Using our measurement of recoil electrons with energies above 6.5 MeV, we infer the total flux of 8B solar neutrinos to be 2.42+-0.06(stat.)+0.10-0.07(syst.)*10^6/cm^2/s. This result is consistent with the Kamiokande measurement and is 36% of the flux predicted by the BP95 solar model. The flux is also measured in 1.5 month subsets and shown to be consistent with a constant rate., Comment: 7 pages, 3 figures

Published
1998
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46. Evidence for Oscillation of Atmospheric Neutrinos

Author

Takaaki Kajita, H. Ishino, T. Ishii, T. Kobayashi, Alec Habig, L. Wai, J. Hsu, Tomoyuki Maruyama, Y. Totsuka, M. Koga, Ken-ichiro Kobayashi, Henry W. Sobel, S. Hatakeyama, D. Takemori, Kyoshi Nishijima, V. J. Stenger, M. Earl, Yoshitaka Itow, D. Casper, B. Viren, K. Nakamura, J. Kameda, Makoto Sakuda, A. L. Stachyra, Y. Kanaya, S. Nakayama, W. R. Kropp, N. Sakurai, Masayuki Nakahata, R. A. Doyle, M. Takita, M. L. Chen, S. Matsuno, P. G. Halverson, Akira Hasegawa, K. Martens, K. Fujita, Y. Watanabe, Frederick Reines, R. Sanford, L. R. Price, J. Shirai, W. Gajewski, Kate Scholberg, Osamu Sasaki, M. Kohama, Todd Haines, E. Sharkey, R. J. Wilkes, M. Goldhaber, Takashi Yamaguchi, C. McGrew, Yoshihiro Suzuki, C. Mauger, K. K. Young, S. Mine, C. K. Jung, M. Takahata, D. Kielczewska, J. S. George, Michael B. Smy, E. Ichihara, J. A. Goodman, A. Okada, J. Hill, J. W. Flanagan, Hiroshi Ogawa, M. Nemoto, E. Blaufuss, Kazumasa Miyano, A. T. Suzuki, A. Sakai, Takehisa Hasegawa, M. Etoh, T. Hayakawa, K. Ishihara, K. S. Ganezer, G. W. Sullivan, John G. Learned, H. Okazawa, W. Doki, T. Futagami, T. Barszczxak, R. W. Ellsworth, M. D. Messier, S. Tasaka, Masatoshi Koshiba, S. Echigo, Yuichi Oyama, F. Tsushima, Minoru Yoshida, C. Yanagisawa, A. Kibayashi, Yohei Kobayashi, Y. Nagashima, M. Miura, Ko Okumura, B. K. Kim, Kunio Inoue, K. Nishikawa, A. Suzuki, R. Svoboda, C. W. Walter, Soo-Bong Kim, S. Kasuga, Y. Fukuda, Y. Takeuchi, Shinya Yamada, Z. Conner, Masato Shiozawa, Lawrence Sulak, Junichi Kanzaki, Y. Hayato, T. Iwamoto, Yusuke Koshio, E. Kearns, K. Kaneyuki, C. Saji, J. L. Stone, W. E. Keig, and Mark R. Vagins

Subjects
Physics, Particle physics, Muon, Bilepton, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, General Physics and Astronomy, Solar neutrino problem, High Energy Physics - Experiment, Nuclear physics, Neutrino detector, K2K experiment, High Energy Physics::Experiment, Neutrino, Neutrino oscillation, Super-Kamiokande
Abstract

We present an analysis of atmospheric neutrino data from a 33.0 kiloton-year (535-day) exposure of the Super-Kamiokande detector. The data exhibit a zenith angle dependent deficit of muon neutrinos which is inconsistent with expectations based on calculations of the atmospheric neutrino flux. Experimental biases and uncertainties in the prediction of neutrino fluxes and cross sections are unable to explain our observation. The data are consistent, however, with two-flavor nu_mu nu_tau oscillations with sin^2(2theta)>0.82 and 5x10^-4 < delta m^2 < 6x10^-3 eV^2 at 90% confidence level., Comment: 9 pages (two-column) with 4 figures. Small corrections to Eqn.4 and Fig.3. Final version to appear in PRL

Published
1998

47. 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
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48. First Indication of Terrestrial Matter Effects on Solar Neutrino Oscillation

Author

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

Subjects
Elastic scattering, Physics, Solar neutrino, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, General Physics and Astronomy, FOS: Physical sciences, Solar neutrino problem, High Energy Physics - Experiment, Nuclear physics, Cosmic neutrino background, High Energy Physics - Experiment (hep-ex), Neutrino detector, Measurements of neutrino speed, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Neutrino, Neutrino oscillation
Abstract

We report an indication that the elastic scattering rate of solar $^8$B neutrinos with electrons in the Super-Kamiokande detector is larger when the neutrinos pass through the Earth during nighttime. We determine the day/night asymmetry, defined as the difference of the average day rate and average night rate divided by the average of those two rates, to be $(-3.2\pm1.1(\text{stat})\pm0.5(\text{syst}))\%$, which deviates from zero by 2.7 $\sigma$. Since the elastic scattering process is mostly sensitive to electron-flavored solar neutrinos, a non-zero day/night asymmetry implies that the flavor oscillations of solar neutrinos are affected by the presence of matter within the neutrinos' flight path. Super-Kamiokande's day/night asymmetry is consistent with neutrino oscillations for $4\times10^{-5}$eV$^2\leq\Delta m^2_{21}\leq7\times10^{-5}$eV$^2$ and large mixing values of $\theta_{12}$, at the $68\%$ C.L., Comment: 6 pages, 4 figures

Published
2013
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49. Study of neutron background in the atmospheric neutrino sample in Kamiokande

Author

H. Okazawa, Tomoyuki Maruyama, Masaki Mori, S. Kasuga, Y. Fukuda, Y. Totsuka, A. Suzuki, A.T. Suzuki, Toru Tanimori, K. Ishihara, Y. Takeuchi, K. Nishikawa, E. Ichihara, K. S. Hirata, J. Suzuki, Masato Shiozawa, T. Hara, T. Tomoeda, T. Ishizuka, K. Kaneyuki, M. Koshiba, Takaaki Kajita, H. Ishino, A. Sakai, Yuichi Oyama, Masayuki Nakahata, T. Suda, Ko Okumura, Kazumasa Miyano, Kunio Matsumoto, K. Nakamura, Y. Hayato, Kunio Inoue, S. Joukou, K. Fujita, Shigeki Tasaka, Kyoshi Nishijima, T. Hayakawa, Toshiharu Suzuki, Yusuke Koshio, S. Hatakeyama, K. Kihara, T. Kumita, T. Horiuchi, Y. Nagashima, M. Koga, Yasunari Suzuki, M. Takita, Takashi Yamaguchi, and S. Miyamoto

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Neutrino detector, Astrophysics::High Energy Astrophysical Phenomena, Neutron, Atmospheric neutrino, Neutrino, Nuclear Experiment, Neutrino oscillation, Neutron contamination, Sample (graphics)
Abstract

Neutron background in the atmospheric neutrino sample was studied based on the vertex position distribution of the fully contained π 0 events. No evidence for the background contamination was observed. The neutron contamination in the sub-GeV e-like sample was less than 1.2% at 90% C.L.

Published
1996
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50. A study on the identification capability of a water Čerenkov detector and the atmospheric neutrino problem

Author

Y. Totsuka, H. Okazawa, K. S. Hirata, Akito Sakai, S. Kasuga, K. Nishikawa, T. Hayakawa, T. Kajita, Yusuke Koshio, O. Sasaki, T. Ishizuka, Kazumasa Miyano, Kunio Matsumoto, Masato Shiozawa, Yuichi Oyama, Masayuki Nakahata, K. Fujita, Yasunari Suzuki, K. Kihara, T. Kumita, M. Koga, A. Suzuki, S. Joukou, and Atsumu Suzuki

Subjects
Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Cherenkov detector, Solar neutrino, Detector, Proton Synchrotron, Solar neutrino problem, Particle identification, law.invention, Nuclear physics, Neutrino detector, law, Physics::Accelerator Physics, High Energy Physics::Experiment, Neutrino
Abstract

We carried out an experimental test of various characteristics of a water Cerenkov detector, especially the particle identification capability, using the 12-GeV proton synchrotron at KEK, Japan. The detector characteristics so far studied are well reproduced by the Monte Carlo simulation. Especially it is able to identify electrons and muons with mis-identification probabilities less than a few percent in the momentum range of 250–1000 MeV/c except the particle positions in the extreme edge of the detector volume. Based on the present results, the deficiency of μ-neutrinos in the atmospheric neutrinos is not an artifact caused by some peculiar detector characteristics.

Published
1996
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