Searches for lepton flavour and lepton number violation in K+ decays at NA62

NA62 Collaboration

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

Abstract

A search for the lepton number violating K+ ? p-µ+e+ and lepton flavour violating K+ ? p-µ-e+ decays is reported using NA62 data collected in 2017 and 2018. No significant excess is observed above the background expectation and therefore upper limits are established on the branching ratios at 90% confidence level: B(K+ ? p-µ+e+) < 4.2 × 10-11 and B(K+ ? p+µ-e+) < 6.6 × 10-11. These results improve over the previous limits by factors of 12 and 8 respectively.

Original languageEnglish
Title of host publicationProceedings of Science
Volume390
Publication statusPublished - 15 Apr 2021
Event40th International Conference on High Energy Physics, ICHEP 2020 - Virtual, Prague, Czech Republic
Duration: 28 Jul 20206 Aug 2020

Publication series

NameProceedings of Science
PublisherSISSA
ISSN (Print)1824-8039

Conference

Conference40th International Conference on High Energy Physics, ICHEP 2020
CountryCzech Republic
CityVirtual, Prague
Period28/07/206/08/20

Bibliographical note

Publisher Copyright:
© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0).

Fingerprint

Dive into the research topics of 'Searches for lepton flavour and lepton number violation in K<sup>+</sup> decays at NA62'. Together they form a unique fingerprint.

Cite this