Searches for lepton number violating K+ decays
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Searches for lepton number violating K+ decays

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Searches for lepton number violating K+ decays

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The NA62 Collaboration; Cortina Gil, Eduardo; Husek, Tomas
This document is a artículoDate2019
The NA62 experiment at CERN reports a search for the lepton number violating decays K+→π−e+e+ and K+→π−μ+μ+ using a data sample collected in 2017. No signals are observed, and upper limits on the branching fractions of these decays of 2.2 x 10^-10 and 4.2 x 10^-11 are obtained, respectively, at 90% confidence level. These upper limits improve on previously reported measurements by factors of 3 and 2, respectively.

    The NA62 Collaboration Cortina Gil, Eduardo Husek, Tomas 2019 Searches for lepton number violating K+ decays Physics Letters B 797 134794
https://doi.org/10.1016/j.physletb.2019.07.041

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