Graugés Pous, EugeniBABAR Collaboration2019-09-182019-09-182006-02-020031-9007https://hdl.handle.net/2445/140427A search for the nonconservation of lepton flavor in the decay τ ± → e ± γ has been performed with 2.07 × 10 8 e + e − → τ + τ − events collected by the BABAR detector at the SLAC PEP II storage ring at a center-of-mass energy near 10.58 GeV. We find no evidence for a signal and set an upper limit on the branching ratio of B ( τ ± → e ± γ ) < 1.1 × 10 − 7 at 90% confidence level.7 p.application/pdfeng(c) American Physical Society, 2006Física de partículesExperimentsParticle physicsExperimentsinfo:eu-repo/semantics/article5500772019-09-18info:eu-repo/semantics/openAccess