Neutron-antineutron oscillation search using a 0.37 megaton-years exposure of Super-Kamiokande
Publication
, Journal Article
Abe, K; Bronner, C; Hayato, Y; Ikeda, M; Imaizumi, S; Ito, H; Kameda, J; Kataoka, Y; Miura, M; Moriyama, S; Nagao, Y; Nakahata, M; Okada, T ...
Published in: Physical Review D
January 21, 2021
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.
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Published In
Physical Review D
DOI
EISSN
2470-0029
ISSN
2470-0010
Publication Date
January 21, 2021
Volume
103
Issue
1
Citation
APA
Chicago
ICMJE
MLA
NLM
Abe, K., Bronner, C., Hayato, Y., Ikeda, M., Imaizumi, S., Ito, H., … Sekiguchi, T. (2021). Neutron-antineutron oscillation search using a 0.37 megaton-years exposure of Super-Kamiokande. Physical Review D, 103(1). https://doi.org/10.1103/PhysRevD.103.012008
Abe, K., C. Bronner, Y. Hayato, M. Ikeda, S. Imaizumi, H. Ito, J. Kameda, et al. “Neutron-antineutron oscillation search using a 0.37 megaton-years exposure of Super-Kamiokande.” Physical Review D 103, no. 1 (January 21, 2021). https://doi.org/10.1103/PhysRevD.103.012008.
Abe K, Bronner C, Hayato Y, Ikeda M, Imaizumi S, Ito H, et al. Neutron-antineutron oscillation search using a 0.37 megaton-years exposure of Super-Kamiokande. Physical Review D. 2021 Jan 21;103(1).
Abe, K., et al. “Neutron-antineutron oscillation search using a 0.37 megaton-years exposure of Super-Kamiokande.” Physical Review D, vol. 103, no. 1, Jan. 2021. Scopus, doi:10.1103/PhysRevD.103.012008.
Abe K, Bronner C, Hayato Y, Ikeda M, Imaizumi S, Ito H, Kameda J, Kataoka Y, Miura M, Moriyama S, Nagao Y, Nakahata M, Nakajima Y, Nakayama S, Okada T, Okamoto K, Orii A, Pronost G, Sekiya H, Shiozawa M, Sonoda Y, Suzuki Y, Takeda A, Takemoto Y, Takenaka A, Tanaka H, Yano T, Akutsu R, Han S, Kajita T, Okumura K, Tashiro T, Wang R, Xia J, Bravo-Berguño D, Labarga L, Marti L, Zaldivar B, Blaszczyk FDM, Kearns E, Gustafson JD, 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, Giampaolo A, Gonin M, Mueller TA, Paganini P, Quilain B, Ishizuka T, Nakamura T, Jang JS, Learned JG, Anthony LHV, Sztuc AA, Uchida Y, Berardi V, Catanesi MG, Radicioni E, Calabria NF, Machado LN, De Rosa G, Collazuol G, Iacob F, Lamoureux M, Ospina N, Ludovici L, Nishimura Y, Cao S, Friend M, Hasegawa T, Ishida T, Kobayashi T, Matsubara T, Nakadaira T, Jakkapu M, Nakamura K, Oyama Y, Sakashita K, Sekiguchi T. Neutron-antineutron oscillation search using a 0.37 megaton-years exposure of Super-Kamiokande. Physical Review D. 2021 Jan 21;103(1).
Published In
Physical Review D
DOI
EISSN
2470-0029
ISSN
2470-0010
Publication Date
January 21, 2021
Volume
103
Issue
1