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arXiv · hep-ex/0502032

Search for Lepton Flavor Violation in the Decay tau -> mu gamma

B. Aubert·The BABAR Collaboration
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Abstract

A search for the nonconservation of lepton flavor number in the decay tau -> mu gamma has been performed using 2.07 x 10^8 e+e- -> tau+ tau- events produced at a center-of-mass energy near 10.58 GeV with the BABAR detector at the PEP-II storage ring. We find no evidence for a signal and set an upper limit on the branching ratio of BR(tau -> mu gamma) < 6.8 x 10^-8 at 90% confidence level.

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B. Aubert, The BABAR Collaboration. 2005-06-05. Search for Lepton Flavor Violation in the Decay tau -> mu gamma. https://doi.org/10.1103/physrevlett.95.041802

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