Gascón Fora, DavidGraciani Díaz, RicardoGraugés Pous, EugeniPicatoste Olloqui, EduardoRives Molina, Vicente JoséRuiz, Hugo (Ruiz Pérez)LHCb Collaboration2016-02-052016-02-052015-02-181126-6708https://hdl.handle.net/2445/69287A search for the lepton flavour violating decay τ−→μ−μ+μ− is performed with the LHCb experiment. The data sample corresponds to an integrated luminosity of 1.0fb−1 of proton-proton collisions at a centre-of-mass energy of 7TeV and 2.0fb−1 at 8TeV. No evidence is found for a signal, and a limit is set at 90% confidence level on the branching fraction, B(τ−→μ−μ+μ−)<4.6×10−8.20 p.application/pdfengcc-by (c) LHCb Collaboration et al., 2015http://creativecommons.org/licenses/by/3.0/esAcceleradors de partículesLeptons (Física nuclear)Violació CP (Física nuclear)Particle acceleratorsLeptons (Nuclear physics)CP violation (Nuclear physics)info:eu-repo/semantics/article6537062016-02-05info:eu-repo/semantics/openAccess