June 7, 2022 at 2 p.m. only via Zoom

Mathias Becker

Sebastian Schenk

Yong Xu

Discovering Lepton Flavour Universality Violating New Physics
Andreas Crivellin (PS and U. Zürich)

Hints for the violation of lepton flavour universality (satisfied within the SM) have accumulated in recent years. In particular, deviations from the SM predictions were observed in semi-leptonic B decays (b->sll and b->ctau), in the anomalous magnetic moment of the muon (g-2), in leptonic tau decays and di-electron searches. Furthermore, also the deficit in first row CKM unitarity, known as the Cabibbo Angle Anomaly, can be interpreted as a sign of lepton flavour universality violation. In this talk I review the status of these anomalies and give an overview of the possible interpretations in terms of new physics models.