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

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

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Abstract

A new event reconstruction algorithm based on a maximum likelihood method has been developed for Super-Kamiokande. Its improved kinematic and particle identification capabilities enable the analysis of atmospheric neutrino data in a detector volume 32% larger than previous analyses and increase the sensitivity to the neutrino mass hierarchy.Analysis of a 253.9 kton•year exposure of the Super-Kamiokande IV atmospheric neutrino data has yielded a weak preference for the normal hierarchy, disfavoring the inverted hierarchy at 74% assuming oscillations at the best fit of the analysis.

Original languageEnglish (US)
Article number053F01
JournalProgress of Theoretical and Experimental Physics
Volume2019
Issue number5
DOIs
StatePublished - May 14 2019
Externally publishedYes

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