TY  - JOUR
AU  - BABAR Collaboration (Lees, J. P. et al
AU  - Azzolini, V.
AU  - Lopez-March, N.
AU  - Martinez-Vidal, F.
AU  - Milanes, D. A.
AU  - Oyanguren, A.
PY  - 2010
DA  - 2010//
TI  - Search for Charged Lepton Flavor Violation in Narrow Gamma Decays
T2  - Phys. Rev. Lett.
JO  - Physical Review Letters
SP  - 151802
EP  - 7pp
VL  - 104
IS  - 15
PB  - Amer Physical Soc
AB  - Charged-lepton flavor-violating processes are unobservable in the standard model, but they are predicted to be enhanced in several extensions to the standard model, including supersymmetry and models with leptoquarks or compositeness. We present a search for such processes in a sample of 99 x 10(6)Gamma(2S) decays and 117 x 10(6)Gamma(3S) decays collected with the BABAR detector. We place upper limits on the branching fractions B(Gamma(nS) --> e(+/-)tau(-/+)) and B(Gamma(n(S) --> mu(+/-)tau(-/+)) (n = 2, 3) at the 10(-6) level and use these results to place lower limits of order 1 TeV on the mass scale of charged-lepton flavor-violating effective operators.
SN  - 0031-9007
UR  - http://arxiv.org/abs/1001.1883
UR  - https://doi.org/10.1103/PhysRevLett.104.151802
DO  - 10.1103/PhysRevLett.104.151802
LA  - English
N1  - ISI:000277001700010
ID  - BABARCollaborationLees_etal2010
ER  -