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 468fb-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.
Lees, J., Poireau, V., Prencipe, E., Tisserand, V., Tico, J., Grauges, E., et al. (2010). Limits on τ lepton-flavor violating decays into three charged leptons. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 81(11) [10.1103/PhysRevD.81.111101].
Limits on τ lepton-flavor violating decays into three charged leptons
CARPINELLI, MassimoMembro del Collaboration Group
;
2010
Abstract
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 468fb-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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