Abstract

Abstract

Discrete / Tests of LFU and searches for LFV at LHCb

An embedded feature of the Standard Model is that different leptons have the same interaction strengths with the electroweak-force carriers. This is known as Lepton Universality. The LU is an accidental symmetry of the SM, not the result of some fundamental underlying principle. Recent results on LFU tests in semileptonic $b\rightarrow c l \nu$ transitions and rare $b \rightarrow s ll$ decays, point to a violation of the LFU. If confirmed by further measurements, this would be clear evidence of New Physics in which new heavy particles couple preferentially to 2nd or 3rd generations of leptons. Any extension of the SM that includes violation of the LFU, predicts Lepton Flavour Violating processes in hadron decays with charged leptons in the final state. In this talk, the recent results from LHCb on LFU tests along with searches of charged-LFV are reported.