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


Journal Article

© 2017 American Physical Society. 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.

Full Text

Duke Authors

Cited Authors

  • Abe, K; Bronner, C; Pronost, G; Hayato, Y; Ikeda, M; Iyogi, K; Kameda, J; Kato, Y; Kishimoto, Y; Marti, L; 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

Published Date

  • July 1, 2017

Published In

Volume / Issue

  • 96 / 1

Electronic International Standard Serial Number (EISSN)

  • 2470-0029

International Standard Serial Number (ISSN)

  • 2470-0010

Digital Object Identifier (DOI)

  • 10.1103/PhysRevD.96.012003

Citation Source

  • Scopus