17–24 Jul 2024
Prague
Europe/Prague timezone

Tests of Lepton Flavour Universality at LHCb

19 Jul 2024, 15:15
15m
South Hall 1B

South Hall 1B

Parallel session talk 05. Quark and Lepton Flavour Physics Quark and Lepton Flavour Physics

Speaker

Rafael Silva Coutinho (Syracuse University (US))

Description

Rare B-hadron decays mediated by $b\to s\ell^+\ell^-$ transitions provide a sensitive test of Lepton Flavour Universality (LFU), a symmetry of the Standard Model by which the coupling of the electroweak gauge bosons to leptons is flavour universal. Extensions of the SM do not necessarily preserve this symmetry and may give sizable contributions to these processes. Precise measurements of LFU ratios are, therefore, an extremely sensitive probe for New Physics, in particular given how clean the predictions for LFU observables are. Likewise, breaking of LFU can result in Lepton-Flavour violating decays of the form b->s\ell\ell'. This talks summarizes recent measurements of Lepton Flavour Universality at LHCb, as well as searches for Lepton-Flavour violating decays

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Authors

Keri Vos (Nikhef National institute for subatomic physics (NL)) Rafael Silva Coutinho (Syracuse University (US)) Zhenzi Wang (Université Paris-Saclay (FR))

Presentation materials