Flavour bounds on axions, hidden photons and sterile neutrinos

Abstract

Flavour-violating decays are some of the most sensitive probes for New Physics with masses below the B meson threshold. In this talk I review the sensitivity to axion-like particles, hidden photons and heavy neutral leptons assuming minimal models where these are the only particle in addition to the Standard Model, respectively.

Comments: Contribution to the 12th Workshop on the CKM Unitarity Triangle, Santiago de Compostela, 18-22 September 2023, 8 pages