Search for nucleon decay into charged antilepton plus meson in 0.316  megaton·years exposure of the Super-Kamiokande water Cherenkov detector

(The Super-Kamiokande Collaboration)

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

We have searched for proton decays into a charged antilepton (e+, μ+) plus a meson (η, ρ0, ω) and for neutron decays into a charged antilepton (e+, μ+) plus a meson (π-, ρ-) using Super-Kamiokande I-IV data, corresponding to 0.316 megaton·years of exposure. This measurement updates the previous published result by using 2.26 times more data and improved analysis methods. No significant evidence for nucleon decay is observed and lower limits on the partial lifetime of the nucleon are obtained. The limits range from 3×1031 to 1×1034 years at 90% confidence level, depending on the decay mode.

Original languageEnglish
Article number012003
JournalPhysical Review D
Volume96
Issue number1
DOIs
Publication statusPublished - 2017 Jul 1
Externally publishedYes

Fingerprint

mesons
detectors
decay
water
neutron decay
confidence
life (durability)
protons

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Search for nucleon decay into charged antilepton plus meson in 0.316  megaton·years exposure of the Super-Kamiokande water Cherenkov detector. / (The Super-Kamiokande Collaboration).

In: Physical Review D, Vol. 96, No. 1, 012003, 01.07.2017.

Research output: Contribution to journalArticle

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title = "Search for nucleon decay into charged antilepton plus meson in 0.316  megaton·years exposure of the Super-Kamiokande water Cherenkov detector",
abstract = "We have searched for proton decays into a charged antilepton (e+, μ+) plus a meson (η, ρ0, ω) and for neutron decays into a charged antilepton (e+, μ+) plus a meson (π-, ρ-) using Super-Kamiokande I-IV data, corresponding to 0.316 megaton·years of exposure. This measurement updates the previous published result by using 2.26 times more data and improved analysis methods. No significant evidence for nucleon decay is observed and lower limits on the partial lifetime of the nucleon are obtained. The limits range from 3×1031 to 1×1034 years at 90{\%} confidence level, depending on the decay mode.",
author = "{(The Super-Kamiokande Collaboration)} and K. Abe and C. Bronner and G. Pronost and Y. Hayato and M. Ikeda and K. Iyogi and J. Kameda and Y. Kato and Y. Kishimoto and Ll Marti and M. Miura and S. Moriyama and M. Nakahata and Y. Nakano and S. Nakayama and Y. Okajima and A. Orii and H. Sekiya and M. Shiozawa and Y. Sonoda and A. Takeda and A. Takenaka and H. Tanaka and S. Tasaka and T. Tomura and R. Akutsu and T. Kajita and K. Kaneyuki and Yasuhiro Nishimura and K. Okumura and Tsui, {K. M.} and L. Labarga and P. Fernandez and Blaszczyk, {F. D.M.} and J. Gustafson and C. Kachulis and E. Kearns and Raaf, {J. L.} and Stone, {J. L.} and Sulak, {L. R.} and S. Berkman and S. Tobayama and M. Goldhaber and M. Elnimr and Kropp, {W. R.} and S. Mine and S. Locke and P. Weatherly and Smy, {M. B.} and Sobel, {H. W.}",
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AU - (The Super-Kamiokande Collaboration)

AU - Abe, K.

AU - Bronner, C.

AU - Pronost, G.

AU - Hayato, Y.

AU - Ikeda, M.

AU - Iyogi, K.

AU - Kameda, J.

AU - Kato, Y.

AU - Kishimoto, Y.

AU - Marti, Ll

AU - Miura, M.

AU - Moriyama, S.

AU - Nakahata, M.

AU - Nakano, Y.

AU - Nakayama, S.

AU - Okajima, Y.

AU - Orii, A.

AU - Sekiya, H.

AU - Shiozawa, M.

AU - Sonoda, Y.

AU - Takeda, A.

AU - Takenaka, A.

AU - Tanaka, H.

AU - Tasaka, S.

AU - Tomura, T.

AU - Akutsu, R.

AU - Kajita, T.

AU - Kaneyuki, K.

AU - Nishimura, Yasuhiro

AU - Okumura, K.

AU - Tsui, K. M.

AU - Labarga, L.

AU - Fernandez, P.

AU - Blaszczyk, F. D.M.

AU - Gustafson, J.

AU - Kachulis, C.

AU - Kearns, E.

AU - Raaf, J. L.

AU - Stone, J. L.

AU - Sulak, L. R.

AU - Berkman, S.

AU - Tobayama, S.

AU - Goldhaber, M.

AU - Elnimr, M.

AU - Kropp, W. R.

AU - Mine, S.

AU - Locke, S.

AU - Weatherly, P.

AU - Smy, M. B.

AU - Sobel, H. W.

PY - 2017/7/1

Y1 - 2017/7/1

N2 - We have searched for proton decays into a charged antilepton (e+, μ+) plus a meson (η, ρ0, ω) and for neutron decays into a charged antilepton (e+, μ+) plus a meson (π-, ρ-) using Super-Kamiokande I-IV data, corresponding to 0.316 megaton·years of exposure. This measurement updates the previous published result by using 2.26 times more data and improved analysis methods. No significant evidence for nucleon decay is observed and lower limits on the partial lifetime of the nucleon are obtained. The limits range from 3×1031 to 1×1034 years at 90% confidence level, depending on the decay mode.

AB - We have searched for proton decays into a charged antilepton (e+, μ+) plus a meson (η, ρ0, ω) and for neutron decays into a charged antilepton (e+, μ+) plus a meson (π-, ρ-) using Super-Kamiokande I-IV data, corresponding to 0.316 megaton·years of exposure. This measurement updates the previous published result by using 2.26 times more data and improved analysis methods. No significant evidence for nucleon decay is observed and lower limits on the partial lifetime of the nucleon are obtained. The limits range from 3×1031 to 1×1034 years at 90% confidence level, depending on the decay mode.

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DO - 10.1103/PhysRevD.96.012003

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VL - 96

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 1

M1 - 012003

ER -