Semi-leptonic $B$-physics anomalies: a general EFT analysis within $U(2{)}^n$ flavor symmetry

Marzia Bordone, Gino Isidori, Sokratis Trifinopoulos

We analyse the recent hints of Lepton Flavor Universality violations in semi-leptonic $B$ decays within a general EFT based on a $U(2{)}^n$ flavor symmetry acting on the light genera…