Interplay of quark and lepton flavour at Belle II and the LHC

jeudi 3 juin 2021, 09:00 → 14:00 Europe/Paris

Aoife Bharucha (CPT, Marseille), Lorenzo Feligioni (CPPM, Aix-Marseille Université, CNRS/IN2P3 (FR))

 

Topic: Topical discussion meeting 
Time: Jun 3, 2021 09:00 AM Paris

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zoom_0.mp4

09:00 → 10:00 Probing new physics solutions to the B-meson anomalies at high-energy colliders

In the past decade, several experimental collaborations have reported deviations from the SM prediction in semileptonic B meson decays, both in neutral and charged currents. These so-called "B anomalies" point towards new interactions beyond the SM that violate lepton flavor universality. In this talk we discuss some of the ongoing theoretical attempts to solve these anomalies within effective field theories, simplified leptoquark models and beyond. We focus on the phenomenology of such models and show that there is a complementarity between low-energy flavor observables and searches at high-energy colliders. We also discuss the prospects of testing some of these models at the LHC in the near future.

Orateur: Dr Darius Faroughy ( University of Zurich)

FLavor_LHC_2021.pdf

10:00 → 11:00 Lepton flavour universality and lepton flavour violation tests at Belle II

First generation B factories and LHCb measurements on lepton flavour universality in b-hadron decays point to tension with Standard Model predictions. In several new physics models explaining lepton flavour universality violation also lepton flavour violation is expected. The Belle II experiment, operating at the SuperKEKB energy-asymmetric $e^+ e^-$ collider since spring 2019, offers a unique laboratory to study lepton flavour universality and lepton flavour violation in B meson decays. In this talk highlights from the Belle II experiment with a focus on results and perspectives on measurement testing lepton flavour universality and lepton flavour violation will be discussed.

Orateur: Elisa Manoni (INFN - PG)

emanoni_06032021.pdf

11:00 → 11:20 Coffee break

11:20 → 12:30 Discussion