Jekyll2026-02-25T09:08:12+00:00https://cpviolation.github.io/feed.xmlPhysics prof diving into the universe’s secrets with LHCb experiment Maurizio Martinellimaurizio.martinelli@unimib.it2026-02-01T00:00:00+00:002026-02-01T00:00:00+00:00https://cpviolation.github.io/news/tau23mu-publishedThe paper “Search for τ−→μ−μ+μ− decays at the LHCb experiment with Run 2 data” has been submitted to the archive and is currently under review. By using data collected by the LHCb experiment during Run 2, corresponding to 5.4 fb⁻¹ of integrated luminosity, we have searched for the lepton flavor violating decay of a tau lepton into three muons. Not finding any evidence for this decay, we have set an upper limit on the branching fraction of \(\mathcal{B}(\tau\to\mu\mu\mu) < 1.9 (2.3) \times 10^{-8}\) at 90% (95%) confidence level, which is competitive with the current best limits.

]]>Maurizio Martinellimaurizio.martinelli@unimib.it