Search for proton decay into a single charged antilepton and a massless invisible particle using the full pure water data set of Super-Kamiokande
Year: 2026
Type: article
Abstract: A search for proton decay via p → l + + X , where l + is a positively charged lepton and X is an invisible, massless, neutral particle, was performed using a 401 kton · years exposure representing the entire pure water phase of Super-Kamiokande. No significant indication of a proton decay was observed beyond the expected atmospheric neutrino background. Lower limits on the partial lifetime of the proton were set to 1.72 × 10 33 years for p → e + + X and 0.61 × 10 33 years for p → μ + + X at the 90% confidence level. These results improve on previous limits by factors of 2 and 1.5, respectively.
DOI: 10.1103/rsr5-d3x2
Authors: Y. M. Liu, K. Terada, K. Abe, Y. Asaoka, M. Harada, Y. Hayato, K. Hiraide, T. H. Hung, K. Ieki, M. Ikeda, J. Kameda, Y. Kataoka, S. Mine, M. Miura, S. Moriyama, K. Nakagiri, M. Nakahata, S. Nakayama, Y. Noguchi, G. Pronost, K. Sato, H. Sekiya, R. Shinoda, M. Shiozawa, Y. Suzuki, A. Takeda, Y. Takemoto, H. Tanaka, S. Chen, Y. Itow, T. Kajita, R. Nishijima, K. Okumura, T. Tashiro, T. Tomiya, X. Wang, F. J. de Garay Arcones, P. Fernandez, L. Labarga, D. Samudio, C. Yanagisawa, B. Jargowsky, E. Kearns, J. Mirabito, L. Wan, T. Wester, B. W. Pointon, J. Bian, B. Cortez, N. J. Griskevich, Y. Jiang, M. B. Smy, H. W. Sobel, V. Takhistov, J. Hill, B. D. Xu, D. Jung, D. H. Moon, R. G. Park, B. S. Yang, K. Scholberg, C. W. Walter, O. Drapier, A. Ershova, M. Ferey, Z. Hu, E. Le Blévec, T. Leplumey, Th. A. Mueller, P. Paganini, C. Quach, R. Rogly, T. Nakamura, J. S. Jang, R. P. Litchfield, L. N. Machado, F. J. P. Soler, J. G. Learned, K. Choi, S. Cao, T. V. Ngoc, L. H. V. Anthony, N. W. Prouse, M. Scott, Y. Uchida, V. Berardi, N. F. Calabria, M. G. Catanesi, N. Ospina, E. Radicioni, A. Langella, G. De Rosa, G. T. Burton, G. Collazuol, M. Feltre, M. Mattiazzi, L. Ludovici, M. Gonin, L. Périssé, B. Quilain, M. Fukazawa, S. Horiuchi, A. Kawabata, Y. Maekawa, Y. Nishimura, A. Oka, H. Tanigawa, R. Akutsu, M. Friend, T. Hasegawa, Y. Hino, T. Ishida, T. Kobayashi, T. Matsubara, T. Nakadaira, Y. Oyama, A. Portocarrero Yrey, K. Sakashita, T. Sekiguchi, N. Bhuiyan, F. Di Lodovico, T. Katori, R. Kralik, N. Latham, R. M. Ramsden, V. Siccardi, S. Aoyama, H. Bambara, Y. Inaba, H. Ito, M. Nishigami, T. Sone, A. T. Suzuki, Y. Takeuchi, S. Wada, H. Zhong, J. Feng, L. Feng, N. Fujimoto, S. Han, J. Hikida, M. Kawaue, T. Kikawa, F. Nakanishi, T. Nakaya, R. A. Wendell, S. J. Jenkins, N. McCauley, M. Fanì, M. J. Wilking, Z. Xie, Y. Fukuda, H. Menjo, Y. Yoshioka, J. Lagoda, J. Zalipska, T. Yano, M. Mori, J. Jiang, Y. Asano, K. Hamaguchi, H. Ishino, Y. Koshio, S. Ohshita, T. Tada, T. Ishizuka, G. Barr, D. Barrow, D. Wark, A. Holin, F. Nova, M. Jo, S. Jung, J. Yoo, L. Kneale, T. Peacock, P. Stowell, H. Okazawa, S. M. Lakshmi, S. Hong, E. Kwon, M. W. Lee, J. W. Seo, I. Yu, Y. Ashida, A. K. Ichikawa, S. Kobayashi, K. D. Nakamura, S. Abe, W. Cai, Y. Endo, S. Goto, S. Kodama, Y. Kong, H. Hayasaki, Y. Masaki, Y. Mizuno, T. Muro, K. Nakagiri, Y. Nakajima, M. Sekiyama, N. Taniuchi, T. Yamazumi, M. Yokoyama, P. de Perio, S. Fujita, C. Jesús-Valls, K. Martens, Ll. Marti, A. D. Santos, K. M. Tsui, M. R. Vagins, S. Izumiyama, M. Kuze, R. Matsumoto, C. Ise, M. Ishitsuka, M. Sugo, M. Wako, K. Yamauchi, Y. Nakano, A. Yankelevich, F. Cormier, R. Gaur, M. Hartz, A. Konaka, X. Li, B. R. Smithers, S. Chen, Y. Wu, A. Q. Zhang, B. Zhang, H. Adhikary, M. Girgus, P. Govindaraj, M. Posiadala-Zezula, Y. S. Prabhu, S. B. Boyd, R. Edwards, D. Hadley, M. O’Flaherty, B. Richards, A. Ali, B. Jamieson, C. Bronner, D. Horiguchi, A. Minamino, Y. Sasaki
Institutions: Keio University, Institute of Science Tokyo, The University of Tokyo, University of California, Irvine, Tsinghua University, Nagoya University, Universidad Autónoma de Madrid, City University of New York, Stony Brook University, Boston University, TRIUMF, British Columbia Institute of Technology, High Energy Accelerator Research Organization, California State University System, University of Chinese Academy of Sciences, Chonnam National University, Duke University, Laboratoire Leprince-Ringuet, Gifu University, Gwangju Institute of Science and Technology, University of Glasgow, University of Hawaiʻi at Mānoa, University of Hawaii System, Institute for Basic Science, International Centre for Interdisciplinary Science and Education, Imperial College London, Istituto Nazionale di Fisica Nucleare, Sezione di Bari, Polytechnic University of Bari, Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, University of Padua, Istituto Nazionale di Fisica Nucleare, Sezione di Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Roma I, Sapienza University of Rome, King's College London, Kobe University, Kyoto University, University of Liverpool, University of Minnesota, Miyagi University of Education, National Centre for Nuclear Research, Okayama University, Osaka Electro-Communication University, University of Oxford, Rutherford Appleton Laboratory, Seoul National University, University of Sheffield, Shizuoka University of Welfare, University of Silesia in Katowice, Sungkyunkwan University, Tohoku University, Tokyo University of Science, University of Toyama, University of Warsaw, University of Warwick, The University of Winnipeg, Yokohama National University
Language: English
Topic: Neutrino Physics Research
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Funders: National Science Foundation, U.S. Department of Energy, European Commission, Ministry of Education, Culture, Sports, Science and Technology, National Natural Science Foundation of China, Ministry of Education, National Research Foundation of Korea, Narodowe Centrum Nauki, Ministerstwo Edukacji i Nauki, Institute for Basic Science, Ministry of Science and ICT, South Korea, Horizon 2020 Framework Programme, Natural Sciences and Engineering Research Council of Canada, Science and Technology Facilities Council, Japan Society for the Promotion of Science, Instituto Nazionale di Fisica Nucleare, Nuclear Physics, NextGenerationEU
Awards: G11867378, G1626428022, G1820956982, G187717830, G2814198339, G2818282093, G2907963052, G3049196905, G3297240425, G3345895242, G3368826020, G3477743816, G3634461281, G3831296399, G3837556332, G4313378819, G4352636101, G437255410, G4919363105, G4929234656, G507055683, G5093298782, From Super-Kamiokande to Hyper-Kamiokande, G5925907655, G6642986802, G6810656081, G753483755, G7865097842, G8367957132, G8611458396, G9001173469, G9001175882
OpenAlex ID: W7204869284
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