Publication: Searches for lepton number violating K+ decays
Дата
2019
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The NA62 experiment at CERN reports a search for the lepton number violating decays K+ -> pi(-)e(+)e(+) and K+ -> pi(-)mu(+)mu(+) 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. (C) 2019 The Author. Published by Elsevier B.V.
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Searches for lepton number violating K+ decays / Gil, EC [et al.] // PHYSICS LETTERS B. - 2019. - 797. - 10.1016/j.physletb.2019.07.041