Improved limits on lepton-flavor-violating τ decays to ℓ, ρ, K*, and K̄*

Journal article

We search for the neutrinoless, lepton-flavor-violating tau decays τ-→-V0, where is an electron or muon and V0 is a vector meson reconstructed as →K+K-, ρ→π+π-, K*→K+π-, K̄*→K-π+. The analysis has been performed using 451fb-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)×10-8 at the 90% confidence level. © 2009 The American Physical Society.

Authors: Aubert, B; Karyotakis, Y; Lees, J; Poireau, V; Prencipe, E

• Journal: Physical Review Letters
• Volume: 103
• Issue: 2
• Publication date: 2009-08-06
• DOI: 10.1103/PhysRevLett.103.021801
• EISSN: 1079-7114
• ISSN: 0031-9007
• Language: English