Search for Lepton Flavor Violation in the Decay tau -> mu gamma
Abstract
A search for the nonconservation of lepton flavor number in the decay tau -> mu gamma has been performed using 2.07 x 108 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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