A search for the lepton-flavor-violating decay of the tau into three charged leptons has been performed using 91.5 fb-1 of data collected at an e+e-center-of-mass energy around 10.58 GeV with the BABAR detector at the SLAC storage ring PEP-II. In all six decay modes considered, the numbers of events found in data are compatible with the background expectations. Upper limits on the branching fractions are set in the range (1–3)×10-7 at 90% confidence level.
Search for Lepton-Flavor Violation in the Decay τ-→ℓ-ℓ+ℓ-
MARGONI, MARTINO;SIMONETTO, FRANCO;STROILI, ROBERTO;VOCI, CESARE;SIMI, GABRIELE;
2004
Abstract
A search for the lepton-flavor-violating decay of the tau into three charged leptons has been performed using 91.5 fb-1 of data collected at an e+e-center-of-mass energy around 10.58 GeV with the BABAR detector at the SLAC storage ring PEP-II. In all six decay modes considered, the numbers of events found in data are compatible with the background expectations. Upper limits on the branching fractions are set in the range (1–3)×10-7 at 90% confidence level.
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