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

B. Aubert·BABAR Collaboration
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Abstract

A search for the non-conservation of lepton flavor in the decay tau -> electron gamma has been performed with 2.07 x 10^8 e+e- -> tau+ tau- events collected by the BABAR detector at the PEP-II storage ring at a center-of-mass energy near 10.58 GeV. We find no evidence for a signal and set an upper limit on the branching ratio of BR(tau -> electron gamma) < 1.1 x 10^-7 at 90% confidence level.

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B. Aubert, BABAR Collaboration. 2006-01-30. Search for Lepton Flavor Violation in the Decay tau -> electron gamma. https://doi.org/10.1103/physrevlett.96.041801

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