Searches for Lepton Flavor Violation in the Decays tau -> e gamma and tau -> mu gamma

Details Searches for Lepton Flavor Violation in the Decays tau -> e gamma and tau -> mu gamma Searches for Lepton Flavor Violation in the Decays tau -> e gamma and tau -> mu gamma

2009-08-17

arxiv.org/abs/0908.2381v2

Phys.Rev.Lett.104:021802,2010

Physics

High Energy Physics

High Energy Physics - Experiment

7 pages, 2 encapsulated postscript figures, Physical Review Letters 104 (2010) 021802

Scientific paper

10.1103/PhysRevLett.104.021802

Searches for lepton-flavor-violating decay of a tau lepton to a lighter mass lepton and a photon have been performed with the entire dataset of (963 +- 7) x 10^6 tau decays collected by the BaBar detector near the Upsilon(4S), Upsilon(3S) and Upsilon(2S) resonances. The searches yield no evidence of signals and we set upper limits on the branching fractions of BR(tau -> e gamma) < 3.3 x 10^-8 and BR(tau -> mu gamma) < 4.4 x 10^-8 at 90% confidence level.

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