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 9.2×10^33 and 3.4×10^34 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.

Metadata

Item Type:	Article
Authors/Creators:	Tanaka, M Abe, K Bronner, C Hayato, Y Ikeda, M Imaizumi, S Ito, H Kameda, J Kataoka, Y Kato, Y Kishimoto, Y Marti, L Miura, M Moriyama, S Mochizuki, T Nakahata, M Nakajima, Y Nakayama, S Okada, T Okamoto, K Orii, A Pronost, G Sekiya, H Shiozawa, M Sonoda, Y Takeda, A Takenaka, A Tanaka, H Yano, T Akutsu, R Kajita, T Okumura, K Wang, R Xia, J Bravo-Berguno, D Labarga, L Fernandez, P Blaszczyk, FDM Kearns, E Raaf, JL Stone, JL Wan, L Wester, T Bian, J Griskevich, NJ Kropp, WR Locke, S Mine, S Smy, MB Sobel, HW Takhistov, V Weatherly, P Hill, J Kim, JY Lim, IT Park, RG Bodur, B Scholberg, K Walter, CW Coffani, A Drapier, O El Hedri, S Gonin, M Mueller, TA Paganini, P Ishizuka, T Nakamura, T Jang, JS Learned, JG Matsuno, S Litchfield, RP Sztuc, AA Uchida, Y Berardi, V Catanesi, MG Radicioni, E Calabria, NF De Rosa, G Collazuol, G Iacob, F Ludovici, L Nishimura, Y Cao, S Friend, M Hasegawa, T Ishida, T Kobayashi, T Nakadaira, T Nakamura, K Oyama, Y Sakashita, K Sekiguchi, T Tsukamoto, T Hasegawa, M Isobe, Y Miyabe, H Nakano, Y Shiozawa, T Sugimoto, T Suzuki, AT Takeuchi, Y Ali, A Ashida, Y Hirota, S Jiang, M Kikawa, T Mori, M Nakamura, K Nakaya, T Wendell, RA Anthony, LHV McCauley, N Mehta, P Pritchard, A Tsui, KM Fukuda, Y Itow, Y Niwa, T Taani, M Tsukada, M Mijakowski, P Frankiewicz, K Jung, CK Vilela, C Wilking, MJ Yanagisawa, C Fukuda, D Harada, M Hagiwara, K Horai, T Ishino, H Ito, S Koshio, Y Sakuda, M Takahira, Y Xu, C Kuno, Y Barrow, D Cook, L Simpson, C Wark, D Nova, F Boschi, T Di Lodovico, F Sedgwick, SM Zsoldos, S Kim, SB Yang, JY Thiesse, M Thompson, L Okazawa, H Choi, Y Nishijima, K Koshiba, M Yokoyama, M Goldsack, A Martens, K Quilain, B Suzuki, Y Vagins, MR Kuze, M Yoshida, T Ishitsuka, M Matsumoto, R Ohta, K Martin, JF Nantais, CM Tanaka, HA Towstego, T Hartz, M Konaka, A de Perio, P Prouse, NW Chen, S Xu, BD Richards, B Jamieson, B Walker, J Minamino, A Pintaudi, G Collaboration, S-K
Copyright, Publisher and Additional Information:	© 2020 American Physical Society. Published under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI (https://creativecommons.org/licenses/by/4.0/).
Dates:	Accepted: 28 February 2020 Published (online): 25 March 2020 Published: 25 March 2020
Institution:	The University of Sheffield
Academic Units:	The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield)
Funding Information:	Funder Grant number Particle Physics and Astronomy Research Council PP/E000371/1 Science and Technology Facilities Council ST/H000917/1; ST/H000917/2; ST/K001337/1; ST/N000277/1; ST/S000747/1
Depositing User:	Symplectic Sheffield
Date Deposited:	01 May 2020 10:42
Last Modified:	01 May 2020 10:42
Status:	Published
Publisher:	American Physical Society (APS)
Refereed:	Yes
Identification Number:	10.1103/PhysRevD.101.052011
Related URLs:	Author arXiv URL
Open Archives Initiative ID (OAI ID):	oai:eprints.whiterose.ac.uk:160165

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

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