Abellan Beteta, CarlosCalvo Gómez, MíriamCamboni, AlessandroGarrido Beltrán, LluísGraciani Díaz, RicardoGraugés Pous, EugeniLópez Asamar, EliasOyanguren Campos, Arantza dePérez-Calero Yzquierdo, AntonioPicatoste Olloqui, EduardoPotterat, CédricRives Molina, Vicente JoséRuiz, Hugo (Ruiz Pérez)Ruiz Valls, PabloVázquez Gómez, RicardVilasis-Cardona, XavierLHCb Collaboration2016-02-052016-02-052013-070370-2693https://hdl.handle.net/2445/69288Searches for the lepton flavour violating decay τ−→μ−μ+μ− and the lepton flavour and baryon number violating decays τ−→p¯μ+μ− and τ−→pμ−μ− have been carried out using proton-proton collision data, corresponding to an integrated luminosity of 1.0 fb−1, taken by the LHCb experiment at s√=7 TeV. No evidence has been found for any signal, and limits have been set at 90% confidence level on the branching fractions: B(τ−→μ−μ+μ−)<8.0×10−8, B(τ−→p¯μ+μ−)<3.3×10−7 and B(τ−→pμ−μ−)<4.4×10−7. The results for the τ−→p¯μ+μ− and τ−→pμ−μ− decay modes represent the first direct experimental limits on these channels.10 p.application/pdfengcc-by-nc-nd (c) Elsevier B.V., 2013http://creativecommons.org/licenses/by-nc-nd/3.0/esNeutrinsLeptons (Física nuclear)Partícules (Física nuclear)Violació CP (Física nuclear)NeutrinosLeptons (Nuclear physics)Particles (Nuclear physics)CP violation (Nuclear physics)info:eu-repo/semantics/article6290032016-02-05info:eu-repo/semantics/openAccess