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.
Search for Lepton Number and Flavor Violation in and Decays
Giorgi M.;Giudici S.;Lamanna G.;Lari E.;Migliore E.;Sozzi M.;
2021-01-01
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.File in questo prodotto:
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PhysRevLett.127.131802.pdf
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