Searches for lepton flavour and lepton number violating K+ decays at the NA62 experiment
V. Duk* on behalf of the NA62 Collaboration
Pre-published on:
November 25, 2022
Published on:
June 15, 2023
Abstract
Searches for lepton flavor and lepton number violating decays
have been performed at the NA62 experiment based on the analysis of the data collected in 2016-2018.
New upper limits have been set on the branching ratio of several decay modes: $K^+\to\pi^+\mu^- e^+$,
$K^+\to\pi^-\mu^+ e^+$,
$K^+\to\pi^-l^+ l^+ (l = e, \mu)$
and $K^+\to\mu^- \nu e^+ e^+$.
A search for the decay
$K^+\to\pi^-\pi^0 e^+ e^+$ was made for the first time.
DOI: https://doi.org/10.22323/1.414.0705
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