Search for Nucleon and Dinucleon Decays with an Invisible Particle and a Charged Lepton in the Final State at the Super-Kamiokande Experiment
Creators: name: Takhistov, V.
name: Abe, K.
name: Haga, Y.
name: Hayato, Y.
name: Ikeda, M.
name: Iyogi, K.
name: Kameda, J.
name: Kishimoto, Y.
name: Miura, M.
name: Moriyama, S.
name: Nakahata, M.
name: Nakajima, T.
name: Nakano, Y.
name: Nakayama, S.
name: Orii, A.
name: Sekiya, H.
name: Shiozawa, M.
name: Takeda, A.
name: Tanaka, H.
name: Tomura, T.
name: Wendell, R. A.
name: Irvine, T.
name: Kajita, T.
name: Kametani, I.
name: Kaneyuki, K.
name: Nishimura, Y.
name: Richard, E.
name: Okumura, K.
name: Labarga, L.
name: Fernandez, P.
name: Gustafson, J.
name: Kachulis, C.
name: Kearns, E.
name: Raaf, J. L.
name: Stone, J. L.
name: Sulak, L. R.
name: Berkman, S.
name: Nantais, C. M.
name: Tanaka, H. A.
name: Tobayama, S.
name: Goldhaber, M.
name: Carminati, G.
name: Kropp, W. R.
name: Mine, S.
name: Weatherly, P.
name: Renshaw, A.
name: Smy, M. B.
name: Sobel, H. W.
name: Ganezer, K. S.
name: Hartfiel, B. L.
name: Hill, J.
name: Hong, N.
name: Kim, J. Y.
name: Lim, I. T.
name: Himmel, A.
name: Li, Z.
name: Scholberg, K.
name: Walter, C. W.
name: Wongjirad, T.
name: Ishizuka, T.
name: Tasaka, S.
name: Jang, J. S.
name: Learned, J. G.
name: Matsuno, S.
name: Smith, S. N.
name: Friend, M.
name: Hasegawa, T.
name: Ishida, T.
name: Ishii, T.
name: Kobayashi, T.
name: Nakadaira, T.
name: Nakamura, K.
name: Oyama, Y.
name: Sakashita, K.
name: Sekiguchi, T.
name: Tsukamoto, T.
name: Suzuki, A. T.
name: Takeuchi, Y.
name: Yano, T.
name: Hirota, S.
name: Huang, K.
name: Ieki, K.
name: Kikawa, T.
name: Minamino, A.
name: Nakaya, T.
name: Suzuki, K.
name: Takahashi, S.
name: Fukuda, Y.
name: Choi, K.
name: Itow, Y.
name: Suzuki, T.
name: Mijakowski, P.
name: Frankiewicz, K.
name: Hignight, J.
name: Imber, J.
name: Jung, C. K.
name: Li, X.
name: Palomino, J. L.
name: Wilking, M. J.
name: Yanagisawa, C.
name: Ishino, H.
name: Kayano, T.
name: Kibayashi, A.
name: Koshio, Y.
name: Mori, T.
name: Sakuda, M.
name: Kuno, Y.
name: Tacik, R.
name: Kim, S. B.
name: Okazawa, H.
name: Choi, Y.
name: Nishijima, K.
name: Koshiba, M.
name: Suda, Y.
name: Totsuka, Y.
name: Yokoyama, M.
name: Bronner, C.
name: Hartz, M.
name: Martens, K.
name: Marti, Ll.
name: Suzuki, Y.
name: Vagins, M. R.
name: Martin, J. F.
name: de Perio, P.
name: Konaka, A.
name: Chen, S.
name: Zhang, Y.
name: Wilkes, R. J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: Search results for nucleon decays $p \rightarrow e^+X$, $p \rightarrow μ^+X$, $n \rightarrow νγ$ (where $X$ is an invisible, massless particle) as well as dinucleon decays $np \rightarrow e^+ν$, $np \rightarrow μ^+ν$ and $np \rightarrow τ^+ν$ in the Super-Kamiokande experiment are presented. Using single-ring data from an exposure of 273.4 kton $\cdot$ years, a search for these decays yields a result consistent with no signal. Accordingly, lower limits on the partial lifetimes of $τ_{p \rightarrow e^+X} &gt; 7.9 \times 10^{32}$ years, $τ_{p \rightarrow μ^+X} &gt; 4.1 \times 10^{32}$ years, $τ_{n \rightarrow νγ} &gt; 5.5 \times 10^{32}$ years, $τ_{np \rightarrow e^+ν} &gt; 2.6 \times 10^{32}$ years, $τ_{np \rightarrow μ^+ν} &gt; 2.2 \times 10^{32}$ years and $τ_{np \rightarrow τ^+ν} &gt; 2.9 \times 10^{31}$ years at a $90 \% $ confidence level are obtained. Some of these searches are novel.
description: 6 pages, 1 figure; minor corrections, length shortened, matches published version