Sep 5 – 10, 2021
Online
Europe/Lisbon timezone

Search for lepton number and flavour violation in K+ and pi0 decays

Sep 8, 2021, 5:15 PM
25m
Online

Online

Talk Tests of symmetries and conservation laws Tests of symmetries and conservation laws

Speaker

Roberta Volpe (Comenius University, Bratislava (SK))

Description

The NA62 experiment at CERN collected a large sample of charged kaon decays into final states
with multiple charged particles in 2016-2018. This sample provides sensitivities to rare decays with branching ratios as low as 10-11.
Searches for the lepton number violating K+→π−μ+e+ decay and the lepton flavour violating K+→π+μ−e+ and π0→μ−e+ decays are reported. No evidence for these decays is found and upper limits of the branching ratios are obtained at 90% confidence level. These results improve by one order of magnitude over previous results for these decay modes.

Primary author

Roberta Volpe (Comenius University, Bratislava (SK))

Presentation materials