Searches for Lepton Flavor Violation in the Decays tau{sup +}-->e{sup +}-{gamma} and {tau}{sup +}-->{mu}{sup +}-{gamma}

Journal Article · Fri Jan 15 00:00:00 EST 2010 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.104.021802· OSTI ID:21386896

Aubert, B; Karyotakis, Y; Lees, J P; Poireau, V; Prencipe, E; Prudent, X; Tisserand, V ^[1]; Garra Tico, J; Grauges, E ^[2]; Martinelli, M; Palano, A; Pappagallo, M ^[3]; Eigen, G; Stugu, B; Sun, L ^[4]; Battaglia, M; Brown, D N; Hooberman, B; Kerth, L T; Kolomensky, Yu G ^[5]

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1. Laboratoire d'Annecy-le-Vieux de Physique des Particules (LAPP), Universite de Savoie, CNRS/IN2P3, F-74941 Annecy-Le-Vieux (France)
2. Universitat de Barcelona, Facultat de Fisica, Departament ECM, E-08028 Barcelona (Spain)
3. INFN Sezione di Bari, I-70126 Bari (Italy)
4. University of Bergen, Institute of Physics, N-5007 Bergen (Norway)
5. Lawrence Berkeley National Laboratory and University of California, Berkeley, California 94720 (United States)

Searches for lepton-flavor-violating decays of a {tau} lepton to a lighter mass lepton and a photon have been performed with the entire data set of (963+-7)x10{sup 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 B(tau{sup +}-->e{sup +}-{gamma})<3.3x10{sup -8} and B({tau}{sup +}-->{mu}{sup +}-{gamma})<4.4x10{sup -8} at 90% confidence level.

• OSTI ID: 21386896
• Journal Information: Physical Review Letters, Vol. 104, Issue 2; Other Information: DOI: 10.1103/PhysRevLett.104.021802; (c) 2010 The American Physical Society; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BRANCHING RATIO
FLAVOR MODEL
INVARIANCE PRINCIPLES
LEPTONIC DECAY
PARTICLE DECAY
PARTICLE DISCRIMINATION
PHOTONS
TAU PARTICLES
BASIC INTERACTIONS
BOSONS
COMPOSITE MODELS
DECAY
DIMENSIONLESS NUMBERS
ELEMENTARY PARTICLES
FERMIONS
HEAVY LEPTONS
INTERACTIONS
LEPTONS
MASSLESS PARTICLES
MATHEMATICAL MODELS
PARTICLE IDENTIFICATION
PARTICLE MODELS
QUARK MODEL
WEAK INTERACTIONS
WEAK PARTICLE DECAY