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Search for Lepton Number and Flavor Violation in and Decays

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  • NA62 Collaboration
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Article number131802
<mark>Journal publication date</mark>24/09/2021
<mark>Journal</mark>Physical review letters
Issue number13
Volume127
Number of pages8
Publication StatusPublished
<mark>Original language</mark>English

Abstract

Searches for the lepton number violating decay and the lepton flavor violating and decays are reported using data collected by the NA62 experiment at CERN in 2017-2018. No evidence for these decays is found and upper limits of the branching ratios are obtained at 90% confidence level: , and . These results improve by 1 order of magnitude over previous results for these decay modes.

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