@article{345a623cc0e1438e9b44922173b2167a,
title = "Search for proton decay via p →e+π0 and p →μ+π0 with an enlarged fiducial volume in Super-Kamiokande I-IV",
abstract = "We have searched for proton decay via p→e+π0 and p→μ+π0 modes with the enlarged fiducial volume data of Super-Kamiokande from April 1996 to May 2018, which corresponds to 450 kton·years exposure. We have accumulated about 25% more livetime and enlarged the fiducial volume of the Super-Kamiokande detector from 22.5 kton to 27.2 kton for this analysis, so that 144 kton·years of data, including 78 kton·years of additional fiducial volume data, has been newly analyzed. No candidates have been found for p→e+π0 and one candidate remains for p→μ+π0 in the conventional 22.5 kton fiducial volume and it is consistent with the atmospheric neutrino background prediction. We set lower limits on the partial lifetime for each of these modes: τ/B(p→e+π0)>2.4×1034 years and τ/B(p→μ+π0)>1.6×1034 years at 90% confidence level.",
author = "{(Super-Kamiokande Collaboration)} and A. Takenaka 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 Y. Nagao 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 Y. Suzuki and A. Takeda and Y. Takemoto and H. Tanaka and T. Yano and R. Akutsu and S. Han and T. Kajita and K. Okumura and T. Tashiro and R. Wang and J. Xia and D. Bravo-Bergu{\~n}o and L. Labarga and P. Fernandez and B. Zaldivar and Blaszczyk, {F. D.M.} and E. Kearns and Raaf, {J. L.} and Stone, {J. L.} and L. Wan and T. Wester and Pointon, {B. W.} and J. Bian",
note = "Funding Information: We gratefully acknowledge the cooperation of the Kamioka Mining and Smelting Company. The Super-Kamiokande experiment has been built and operated from funding by the Japanese Ministry of Education, Culture, Sports, Science and Technology, the U.S. Department of Energy, and the U.S. National Science Foundation. Some of us have been supported by funds from the National Research Foundation of Korea NRF-2009-0083526 (KNRC) funded by the Ministry of Science, ICT, and Future Planning and the Ministry of Education (2018R1D1A3B07050696, 2018R1D1A1B07049158), the Japan Society for the Promotion of Science, the National Natural Science Foundation of China under Grants No. 11235006, the Spanish Ministry of Science, Universities and Innovation (Grant No. PGC2018-099388-B-I00), the Natural Sciences and Engineering Research Council (NSERC) of Canada, the Scinet and Westgrid consortia of Compute Canada, the National Science Centre, Poland (2015/18/E/ST2/00758), the Science and Technology Facilities Council (STFC) and GridPPP, UK, the European Union{\textquoteright}s Horizon 2020 Research and Innovation Programme under the Marie Sklodowska-Curie grant agreement no. 754496, H2020-MSCA-RISE-2018 JENNIFER2 grant agreement no. 822070, and H2020-MSCA-RISE-2019 SK2HK grant agreement no. 872549. Publisher Copyright: {\textcopyright} 2020 authors. Published by the American Physical Society.",
year = "2020",
month = dec,
day = "22",
doi = "10.1103/PhysRevD.102.112011",
language = "English",
volume = "102",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "11",
}