New Limit for the Family-Number Non-conserving Decay mu+ to e+gamma
Abstract
An experiment has been performed to search for the muon- and electron-number non-conserving decay mu+ to e+gamma. The upper limit for the branching ratio to be GAMMA(mu+ to e+gamma)/GAMMA(mu+ to e+nunubar) < 1.2e-11 with 90% confidence.
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