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Search for the lepton flavour violating decay τ− → μ−μ+μ−

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A 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.

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Journal of High Energy Physics, 2015, vol. 2015, num. 121

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cc-by (c) LHCb Collaboration et al., 2015

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Articles publicats en revistes (Física Quàntica i Astrofísica)

# metadata.dc.title[].value
Search for the lepton flavour violating decay τ− → μ−μ+μ−