Lees, J. P. et al. (2010) Limits on τ lepton-flavor violating decays into three charged leptons. Physical Review D, 81 (11). p. 111101. ISSN 1550-7998

A search for the neutrinoless, lepton-flavor violating decay of the τ lepton into three charged leptons has been performed using an integrated luminosity of 468  fb-1 collected with the BABAR detector at the PEP-II collider. 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 (1.8–3.3)×10-8 at 90% confidence level.

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