Search for Lepton-Flavor and Lepton-Number Violation in the Decay τ−→ℓ∓h±h'−

Graugés Pous, EugeniBABAR Collaboration2019-10-012019-10-012005-11-010031-9007https://hdl.handle.net/2445/141359A search for lepton-flavor and lepton-number violation in the decay of the tau lepton into one charged lepton and two charged hadrons is performed using 221.4 fb − 1 of data collected at an e + e − center-of-mass energy of 10.58 GeV with the BABAR detector at the SLAC PEP-II storage ring. In all 14 decay modes considered, the observed data are compatible with background expectations, and upper limits are set in the range B ( τ → ℓ h h ′ ) < ( 0.7 − 4.8 ) × 10 − 7 at 90% confidence level.7 p.application/pdfeng(c) American Physical Society, 2005Física de partículesExperimentsParticle physicsExperimentsSearch for Lepton-Flavor and Lepton-Number Violation in the Decay τ−→ℓ∓h±h'−info:eu-repo/semantics/article5390622019-10-01info:eu-repo/semantics/openAccess