Search for proton decay into three charged leptons in 0.37 megaton-years exposure of the Super-Kamiokande

Super-Kamiokande Collaboration

Search for proton decay into three charged leptons in 0.37 megaton-years exposure of the Super-Kamiokande

Super-Kamiokande Collaboration

Research output: Contribution to journal › Article › peer-review

Abstract

A search for proton decay into three charged leptons has been performed by using 0.37 Mton·years of data collected in Super-Kamiokande. All possible combinations of electrons, muons and their antiparticles consistent with charge conservation were considered as decay modes. No significant excess of events has been found over the background, and lower limits on the proton lifetime divided by the branching ratio have been obtained. The limits range between 9.2 × 10³³ to 3.4 × 10³⁴ years at 90% confidence level, improving by more than an order of magnitude upon limits from previous experiments. A first limit has been set for the p → µ⁻e⁺e⁺ mode.

Original language	English
Journal	Unknown Journal
Publication status	Published - Jan 22 2020

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@article{464ede2fe04b4e1999e0b5a48d948fe0,

title = "Search for proton decay into three charged leptons in 0.37 megaton-years exposure of the Super-Kamiokande",

abstract = "A search for proton decay into three charged leptons has been performed by using 0.37 Mton·years of data collected in Super-Kamiokande. All possible combinations of electrons, muons and their antiparticles consistent with charge conservation were considered as decay modes. No significant excess of events has been found over the background, and lower limits on the proton lifetime divided by the branching ratio have been obtained. The limits range between 9.2 × 1033 to 3.4 × 1034 years at 90% confidence level, improving by more than an order of magnitude upon limits from previous experiments. A first limit has been set for the p → µ−e+e+ mode.",

author = "{Super-Kamiokande Collaboration} and M. Tanaka and K. Abe and C. Bronner and Y. Hayato and M. Ikeda and S. Imaizumi and H. Ito and J. Kameda and Y. Kataoka and Y. Kato and Y. Kishimoto and Ll Marti and M. Miura and S. Moriyama and T. Mochizuki and M. Nakahata and Y. Nakajima and S. Nakayama and T. Okada and K. Okamoto and A. Orii and G. Pronost and H. Sekiya and M. Shiozawa and Y. Sonoda and A. Takeda and A. Takenaka and H. Tanaka and T. Yano and R. Akutsu and T. Kajita and K. Okumura and R. Wang and J. Xia and D. Bravo-Bergu{\~n}o and L. Labarga and P. Fernandez and Blaszczyk, {F. D.M.} and E. Kearns and Raaf, {J. L.} and Stone, {J. L.} and L. Wan and T. Wester and J. Bian and Griskevich, {N. J.} and Kropp, {W. R.} and H. Ishino and Shintaro Ito and Y. Koshio and Makoto Sakuda",

year = "2020",

month = jan,

day = "22",

language = "English",

journal = "[No source information available]",

issn = "0402-1215",

}

TY - JOUR

T1 - Search for proton decay into three charged leptons in 0.37 megaton-years exposure of the Super-Kamiokande

AU - Super-Kamiokande Collaboration

AU - Tanaka, M.

AU - Abe, K.

AU - Bronner, C.

AU - Hayato, Y.

AU - Ikeda, M.

AU - Imaizumi, S.

AU - Ito, H.

AU - Kameda, J.

AU - Kataoka, Y.

AU - Kato, Y.

AU - Kishimoto, Y.

AU - Marti, Ll

AU - Miura, M.

AU - Moriyama, S.

AU - Mochizuki, T.

AU - Nakahata, M.

AU - Nakajima, Y.

AU - Nakayama, S.

AU - Okada, T.

AU - Okamoto, K.

AU - Orii, A.

AU - Pronost, G.

AU - Sekiya, H.

AU - Shiozawa, M.

AU - Sonoda, Y.

AU - Takeda, A.

AU - Takenaka, A.

AU - Tanaka, H.

AU - Yano, T.

AU - Akutsu, R.

AU - Kajita, T.

AU - Okumura, K.

AU - Wang, R.

AU - Xia, J.

AU - Bravo-Berguño, D.

AU - Labarga, L.

AU - Fernandez, P.

AU - Blaszczyk, F. D.M.

AU - Kearns, E.

AU - Raaf, J. L.

AU - Stone, J. L.

AU - Wan, L.

AU - Wester, T.

AU - Bian, J.

AU - Griskevich, N. J.

AU - Kropp, W. R.

AU - Ishino, H.

AU - Ito, Shintaro

AU - Koshio, Y.

AU - Sakuda, Makoto

PY - 2020/1/22

Y1 - 2020/1/22

N2 - A search for proton decay into three charged leptons has been performed by using 0.37 Mton·years of data collected in Super-Kamiokande. All possible combinations of electrons, muons and their antiparticles consistent with charge conservation were considered as decay modes. No significant excess of events has been found over the background, and lower limits on the proton lifetime divided by the branching ratio have been obtained. The limits range between 9.2 × 1033 to 3.4 × 1034 years at 90% confidence level, improving by more than an order of magnitude upon limits from previous experiments. A first limit has been set for the p → µ−e+e+ mode.

AB - A search for proton decay into three charged leptons has been performed by using 0.37 Mton·years of data collected in Super-Kamiokande. All possible combinations of electrons, muons and their antiparticles consistent with charge conservation were considered as decay modes. No significant excess of events has been found over the background, and lower limits on the proton lifetime divided by the branching ratio have been obtained. The limits range between 9.2 × 1033 to 3.4 × 1034 years at 90% confidence level, improving by more than an order of magnitude upon limits from previous experiments. A first limit has been set for the p → µ−e+e+ mode.

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M3 - Article

AN - SCOPUS:85095372140

JO - [No source information available]

JF - [No source information available]

SN - 0402-1215

ER -