@article{b35ba5b7269640118bdab5aaf9f9ce64,
title = "Neutron-antineutron oscillation search using a 0.37 megaton-years exposure of Super-Kamiokande",
abstract = "As a baryon number violating process with ΔB=2, neutron-antineutron oscillation (n→n¯) provides a unique test of baryon number conservation. We have performed a search for n→n¯ oscillation with bound neutrons in Super-Kamiokande, with the full dataset from its first four run periods, representing an exposure of 0.37 Mton-years. The search used a multivariate analysis trained on simulated n→n¯ events and atmospheric neutrino backgrounds and resulted in 11 candidate events with an expected background of 9.3 events. In the absence of statistically significant excess, we derived a lower limit on n¯ appearance lifetime in O16 nuclei of 3.6×1032 years and on the neutron-antineutron oscillation time of τn→n¯>4.7×108 s at 90% C.L.",
author = "{(Super-Kamiokande Collaboration)} 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 M. Miura and S. Moriyama 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 A. Takenaka 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 Ll Marti and B. Zaldivar and Blaszczyk, {F. D.M.} and E. Kearns and Gustafson, {J. D.} 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 S. Locke and M. Ishitsuka",
note = "Publisher Copyright: {\textcopyright} 2021 authors. Published by the American Physical Society.",
year = "2021",
month = jan,
day = "21",
doi = "10.1103/PhysRevD.103.012008",
language = "English",
volume = "103",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "1",
}