A search for the neutrinoless, lepton-flavor violating decay of the tau lepton into three charged leptons has been performed using 376fb-1 of data collected at an e+e- center-of-mass energy around 10.58 GeV with the BABAR detector at the SLAC PEP-II storage rings. 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 (4-8)×10-8 at 90% confidence level.

Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J., Poireau, V., et al. (2007). Improved limits on the lepton-flavor violating decays τ-→l-l+l-. PHYSICAL REVIEW LETTERS, 99(25) [10.1103/PhysRevLett.99.251803].

Improved limits on the lepton-flavor violating decays τ-→l-l+l-

Carpinelli M;
2007

Abstract

A search for the neutrinoless, lepton-flavor violating decay of the tau lepton into three charged leptons has been performed using 376fb-1 of data collected at an e+e- center-of-mass energy around 10.58 GeV with the BABAR detector at the SLAC PEP-II storage rings. 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 (4-8)×10-8 at 90% confidence level.
Articolo in rivista - Articolo scientifico
Free energy; Germanium compounds; Particle detectors; Volume fraction; BABAR detector; Charged leptons; Lepton flavor; Charged particles;
English
B. Aubert et al. (BABAR Collaboration)
Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J., Poireau, V., et al. (2007). Improved limits on the lepton-flavor violating decays τ-→l-l+l-. PHYSICAL REVIEW LETTERS, 99(25) [10.1103/PhysRevLett.99.251803].
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