Search for nucleon decay into charged antilepton plus meson in 0.316 megaton . years exposure of the Super-Kamiokande water Cherenkov detector
File(s)1705.07221.pdf (9.28 MB)
Published version
Author(s)
Type
Journal Article
Abstract
We have searched for proton decays into a charged antilepton (
e
+
,
μ
+
) plus a meson (
η
,
ρ
0
,
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
×
10
31
to
1
×
10
34
years
at 90% confidence level, depending on the decay mode.
e
+
,
μ
+
) plus a meson (
η
,
ρ
0
,
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
×
10
31
to
1
×
10
34
years
at 90% confidence level, depending on the decay mode.
Date Issued
2017-07-24
Date Acceptance
2017-06-07
Citation
Physical Review D - Particles, Fields, Gravitation and Cosmology, 2017, 96 (1)
ISSN
1550-2368
Publisher
American Physical Society
Journal / Book Title
Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume
96
Issue
1
Copyright Statement
© 2017 American Physical Society
Sponsor
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Grant Number
PP/E000509/1
ST/H000992/1
ST/H000992/2
ST/J500616/1
ST/K001604/1
ST/M002691/1
Subjects
Science & Technology
Physical Sciences
Astronomy & Astrophysics
Physics, Particles & Fields
Physics
GRAND UNIFIED THEORIES
CROSS-SECTIONS
TRUE ABSORPTION
PROTON LIFETIME
SCATTERING
MODES
PIONS
RESONANCE
SPECTRA
LEPTONS
Publication Status
Published
Article Number
012003
Date Publish Online
2017-07-24