New Limit on the Lepton-Flavor-Violating Decay μ+ → e+γ
New Limit on the Lepton-Flavor-Violating Decay μ+ → e+γ
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DOI:
10.1103/physrevlett.107.171801
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发表时间:
2011-10-17
影响因子:
8.6
通讯作者:
Zanello, D.
中科院分区:
文献类型:
--
作者:
Adam, J.;Bai, X.;Zanello, D.
We present a new result based on an analysis of the data collected by the MEG detector at the Paul Scherrer Institut in 2009 and 2010, in search of the lepton-flavor-violating decay mu(+) -> e(+)gamma. The likelihood analysis of the combined data sample, which corresponds to a total of 1.8 x 10(14) muon decays, gives a 90% C. L. upper limit of 2.4 x 10(-12) on the branching ratio of the mu(+) -> e(+)gamma decay, constituting the most stringent limit on the existence of this decay to date.