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New constraint on the existence of the mu+-> e+ gamma decay

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arxiv 1303.0754 v2 pith:YGMI56YF submitted 2013-03-04 hep-ex physics.ins-det

classification hep-exphysics.ins-det
keywords decaylimittimesdatagammaanalysisbackgroundbest
verification ladder T0 review T1 audit T2 compute T3 formal
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The analysis of a combined data set, totaling 3.6 \times 10^14 stopped muons on target, in the search for the lepton flavour violating decay mu^+ -> e^+ gamma is presented. The data collected by the MEG experiment at the Paul Scherrer Institut show no excess of events compared to background expectations and yield a new upper limit on the branching ratio of this decay of 5.7 \times 10^-13 (90% confidence level). This represents a four times more stringent limit than the previous world best limit set by MEG.

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Cited by 5 Pith papers

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