Searches for Lepton Flavour Violation and Lepton Number Violation in Hadron Decays
arXiv:1209.4939
Abstract
In the Standard Model of particle physics, lepton flavour and lepton number are conserved quantities although no fundamental symmetry demands their conservation. I present recent results of searches for lepton flavour and lepton number violating hadron decays measured at the B factories and LHCb. In addition, the LHCb collaboration has recently performed a search for the lepton flavour violating decay τ^- \to μ^-μ^-μ^+. The obtained upper exclusion limit, that has been presented in this talk for the first time, is of the same order of magnitude as those observed at the B factories. This is the first search for a lepton flavour violating τdecay at a hadron collider.
arXiv commentPresented at Flavor Physics and CP Violation (FPCP 2012), Hefei, China, May 21-25, 2012
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