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

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Abe, K, Bronner, C, Pronost, G, Hayato, Y, Ikeda, M, Iyogi, K, Kameda, J, Kato, Y, Kishimoto, Y, Marti, Ll et al (show 145 more authors) , Miura, M, Moriyama, S, Nakahata, M, Nakano, Y, Nakayama, S, Okajima, Y, Orii, A, Sekiya, H, Shiozawa, M, Sonoda, Y, Takeda, A, Takenaka, A, Tanaka, H, Tasaka, S, Tomura, T, Akutsu, R, Kajita, T, Kaneyuki, K, Nishimura, Y, Okumura, K, Tsui, KM, Labarga, L, Fernandez, P, Blaszczyk, FDM, Gustafson, J, Kachulis, C, Kearns, E, Raaf, JL, Stone, JL, Sulak, LR, Berkman, S, Tobayama, S, Goldhaber, M, Elnimr, M, Kropp, WR, Mine, S, Locke, S, Weatherly, P, Smy, MB, Sobel, HW, Takhistov, V, Ganezer, KS, Hill, J, Kim, JY, Lim, IT, Park, RG, Himmel, A, Li, Z, O'Sullivan, E, Scholberg, K, Walter, CW, Ishizuka, T, Nakamura, T, Jang, JS, Choi, K, Learned, JG, Matsuno, S, Smith, SN, Amey, J, Litchfield, RP, Ma, WY, Uchida, Y, Wascko, MO, Cao, S, Friend, M, Hasegawa, T, Ishida, T, Ishii, T, Kobayashi, T, Nakadaira, T, Nakamura, K, Oyama, Y, Sakashita, K, Sekiguchi, T, Tsukamoto, T, Abe, KE, Hasegawa, M, Suzuki, AT, Takeuchi, Y, Yano, T, Hayashino, T, Hiraki, T, Hirota, S, Huang, K, Jiang, M, Nakamura, KE, Nakaya, T, Quilain, B, Patel, ND, Wendell, RA, Anthony, LHV, McCauley, N ORCID: 0000-0002-5982-5125, Pritchard, A, Fukuda, Y, Itow, Y, Murase, M, Muto, F, Mijakowski, P, Frankiewicz, K, Jung, CK, Li, X, Palomino, JL, Santucci, G, Vilela, C, Wilking, MJ, Yanagisawa, C, Ito, S, Fukuda, D, Ishino, H, Kibayashi, A, Koshio, Y, Nagata, H, Sakuda, M, Xu, C, Kuno, Y, Wark, D, Di Lodovico, F, Richards, B, Tacik, R, Kim, SB, Cole, A, Thompson, L, Okazawa, H, Choi, Y, Ito, K, Nishijima, K, Koshiba, M, Totsuka, Y, Suda, Y, Yokoyama, M, Calland, RG, Hartz, M, Martens, K, Shimpson, C, Suzuki, Y, Vagins, MR, Martin, JF, Nantais, CM, Tanaka, HA, Konaka, A, Chen, S, Wan, L, Zhang, Y, Minamino, A and Wilkes, RJ (2017) Search for nucleon decay into charged antilepton plus meson in 0.316 megaton . years exposure of the Super-Kamiokande water Cherenkov detector PHYSICAL REVIEW D, 96 (1). 012003-. ISSN 2470-0010, 2470-0029

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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.

Item Type:	Article
Additional Information:	19 pages, 22 figures
Uncontrolled Keywords:	hep-ex, hep-ex
Depositing User:	Symplectic Admin
Date Deposited:	10 Aug 2017 13:18
Last Modified:	16 Jun 2026 16:07
DOI:	10.1103/PhysRevD.96.012003
Related Websites:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3008898
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