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

Journal Article · Fri Jun 11 00:00:00 EDT 2010 · Phys.Rev.Lett.104:021802,2010

DOI:https://doi.org/10.1103/PhysRevLett.104.021802· OSTI ID:981672

Aubert, Bernard; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prencipe, E.; Prudent, X.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Martinelli, M.; Palano, A.; Pappagallo, M.; Eigen, G.; Stugu, B.; Sun, L.; Battaglia, M.; Brown, David Nathan; Hooberman, B.; Kerth, L. T.; Kolomensky, Yu. G. ; Lynch, G.

Searches for lepton-flavor-violating decays of a {tau} lepton to a lighter mass lepton and a photon have been performed with the entire dataset of (963 {+-} 7) x 10{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 they set upper limits on the branching fractions of {Beta}({tau}{sup {+-}} {yields} e{sup {+-}}{gamma}) < 3.3 x 10{sup -8} and {Beta}({tau}{sup {+-}} {yields} {mu}{sup {+-}}{gamma}) < 4.4 x 10{sup -8} at 90% confidence level.

• Research Organization: SLAC National Accelerator Lab., Menlo Park, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 981672
• Report Number(s): SLAC-PUB-13753; ISSN 1079-7114; arXiv:0908.2381; TRN: US1003786
• Journal Information: Phys.Rev.Lett.104:021802,2010, Vol. 104, Issue 2; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
LEPTONS
PHOTONS
PARTICLE DECAY
QUANTUM FLAVORDYNAMICS
TAU PARTICLES
BRANCHING RATIO
LIMITING VALUES
ELECTRONS
MUONS PLUS
MUONS MINUS
Experiment-HEP
OTHER