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Searches for violation of lepton flavour and baryon number in tau lepton decays at LHCb
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LHCb Collaboration (Including: Back, J. J., Dossett, D., Gershon, T. J., Harrison, P. F., Kreps, Michal, Latham, Thomas, Pilar, T., Poluektov, Anton, Reid, Matthew M., Silva Coutinho, R., Whitehead, M. (Mark) and Williams, M. P.). (2013) Searches for violation of lepton flavour and baryon number in tau lepton decays at LHCb. Physics Letters B, Volume 724 (Number 1-3). pp. 36-45. doi:10.1103/PhysRevLett.108.161801 ISSN 0370-2693.
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Official URL: http://dx.doi.org/10.1016/j.physletb.2013.05.063
Abstract
Searches for the lepton flavour violating decay τ−→μ−μ+μ− and the lepton flavour and baryon number violating decays View the MathML source 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 View the MathML source. 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, View the MathML source and B(τ−→pμ−μ−)<4.4×10−7. The results for the View the MathML source and τ−→pμ−μ− decay modes represent the first direct experimental limits on these channels.
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