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Search for nucleon decay into charged antilepton plus meson in 0.316 megaton·years exposure of the Super-Kamiokande water Cherenkov detector
- Source :
- Physical Review D. 96
- Publication Year :
- 2017
- Publisher :
- American Physical Society (APS), 2017.
-
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.
- Subjects :
- Physics
Particle physics
Proton
Meson
010308 nuclear & particles physics
Cherenkov detector
Nuclear Theory
01 natural sciences
law.invention
Nuclear physics
Pion
law
0103 physical sciences
High Energy Physics::Experiment
Neutron
Nuclear Experiment
010306 general physics
Nucleon
Super-Kamiokande
Lepton
Subjects
Details
- ISSN :
- 24700029 and 24700010
- Volume :
- 96
- Database :
- OpenAIRE
- Journal :
- Physical Review D
- Accession number :
- edsair.doi...........f4a214a49ac8d22cfb6032d56589f5a5