b → ss + − anomalies from dynamical Yukawas

The LHCb Collaboration has recently reported hints for New Physics in b → ss + − transitions that point to a large violation of flavor universality in the lepton sector. Motivated by them, we present a framework able to accommodate the experimental anomalies while, at the same time, addressing the flavor puzzle of the Standard Model. This framework is based on the hypothesis of dynamical Yukawas, where it is assumed that these couplings are generated by the vacuum expectation value of dynamical fields charged under a local non-Abelian flavor symmetry. The proposed framework has a rich phenomenology and predicts striking collider signatures that will be tested in the near future.