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Title: Searches for violation of lepton flavour and baryon number in tau lepton decays at LHCb
Author: LHCb Collaboration
Abellan Beteta, Carlos
Calvo Gómez, M.
Camboni, Alessandro
Garrido Beltrán, Lluís
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
Lopez Asamar, E.
Oyanguren, A.
Pérez-Calero Yzquierdo, Antonio
Picatoste Olloqui, Eduardo
Potterat, Cédric
Rives Molina, Vicente José
Ruiz, Hugo (Ruiz Pérez)
Ruiz Valls, P.
Vázquez Gómez, R.
Vilasis-Cardona, X.
Keywords: Neutrins
Leptons (Física nuclear)
Partícules (Física nuclear)
Violació CP (Física nuclear)
Leptons (Nuclear physics)
Particles (Nuclear physics)
CP violation (Nuclear physics)
Issue Date: Jul-2013
Publisher: Elsevier B.V.
Abstract: Searches 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.
Note: Reproducció del document publicat a:
It is part of: Physics Letters B, 2013, vol. 724, num. 1-3, p. 36-45
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ISSN: 0370-2693
Appears in Collections:Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))
Articles publicats en revistes (Física Quàntica i Astrofísica)

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