First search for KL →π0γ
Journal
Physical Review D
Journal Volume
102
Journal Issue
5
Date Issued
2020
Author(s)
Shimizu N.
Abstract
We report the first search for the KL→π0γ decay, which is forbidden by Lorentz invariance, using the data from 2016 to 2018 at the J-PARC KOTO experiment. With a single event sensitivity of (7.1±0.3stat±1.6syst)×10-8, no candidate event was observed in the signal region. The upper limit on the branching fraction was set to be 1.7×10-7 at the 90% confidence level. ? 2020 authors. Published by the American Physical Society.
SDGs
Type
journal article