Improved limits on lepton-flavor violating tau decays to l phi, l rho, l K* and l K*bar

Abstract : We search for the neutrinoless, lepton-flavor-violating tau decays tau -> l V^0, where l is an electron or muon and V^0 is a vector meson reconstructed as phi -> K^+K^-, rho -> pi^+pi^-, K^* -> K^+pi^-, or K^*bar -> K^-pi^+. The analysis has been performed using 451 fb^{-1} of data collected at an e^+e^- center-of-mass energy near 10.58 GeV with the BaBar detector at the PEP-II storage rings. The number of events found in the data is compatible with the background expectation, and upper limits on the branching fractions are set in the range (2.6-19) x 10^{-8} at the 90% confidence level.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-00373578
Contributor : Swarna Bassava <>
Submitted on : Monday, April 6, 2009 - 3:03:22 PM
Last modification on : Tuesday, December 22, 2020 - 12:40:02 PM

Citation

B. Aubert, Y. Karyotakis, J.P. Lees, V. Poireau, E. Prencipe, et al.. Improved limits on lepton-flavor violating tau decays to l phi, l rho, l K* and l K*bar. Physical Review Letters, American Physical Society, 2009, 103, 021801 (7p.). ⟨10.1103/PhysRevLett.103.021801⟩. ⟨in2p3-00373578⟩

Record views