New Limit on Muon and Electron Lepton Number Violation from $K_{L}^{0} \to μ^{\pm} e^{\mp}$ Decay

Publisher Website

28 December 1998

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 81 (26) , 5734-5737
https://doi.org/10.1103/physrevlett.81.5734

Abstract

The most sensitive experiment to date to search for the muon and electron lepton number violating decay

K_{L}^{0} \to μ^{\pm} e^{\mp}

has detected no events consistent with this process. Based on this result, the

90 %

confidence level upper limit on the branching fraction is

B (K_{L}^{0} \to μ^{\pm} e^{\mp}) < 4.7 \times 10^{- 12}

.

Keywords

All Related Versions

Version 1, 1998-11-24, ArXiv

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