Search for the rare decay $μ^{+}$ → $e^{+}$ γγ

Publisher Website

29 December 1986

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

Vol. 57 (26) , 3241-3244
https://doi.org/10.1103/physrevlett.57.3241

Abstract

A new experimental search with the Crystal Box detector shows no evidence for the lepton-family-number–nonconserving decay

μ^{+}

→

e^{+}

γγ. This corresponds to an upper limit for the branching ratio of Γ(μ→eγγ)/Γ(μ→eνν¯)<7.2 ×

10^{- 1}

(90% confidence level), an improvement of more than 2 orders of magnitude in sensitivity.

Keywords

This publication has 10 references indexed in Scilit:

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