First search for KL → π0γ

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...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Physical review. D 2020-09, Vol.102 (5), p.1
1. Verfasser:	Shimizu, N
Format:	Artikel
Sprache:	eng
Schlagworte:	Confidence intervals extensions of gauge sector flavor changing neutral currents higher-dimensional field theories kaons leptonic, semileptonic & radiative decays Lorentz symmetry noncommutative field theories PHYSICS OF ELEMENTARY PARTICLES AND FIELDS rare decays
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	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.
ISSN:	2470-0010 2470-0029
DOI:	10.1103/PhysRevD.102.051103