Rare meson decays are among the most sensitive probes of both heavy and light new
physics. Among them, new physics searches using kaons benefit from their small total decay …

Kaon physics is at a turning point–while the rare-kaon experiments NA62 and KOTO are in
full swing, the end of their lifetime is approaching and the future experimental landscape …

The LHCb Upgrade II will fully exploit the flavour-physics opportunities of the HL-LHC, and
study additional physics topics that take advantage of the forward acceptance of the LHCb …

Motivated by the success of the flavour physics programme carried out over the last decade
at the Large Hadron Collider (LHC), we characterize in detail the physics potential of its High …

Axion models with generation-dependent Peccei-Quinn charges can lead to flavor-changing
neutral currents, thus motivating QCD axion searches at precision flavor experiments. We …

Nuclear β decays as well as the decay of the neutron are well-established low-energy
probes of physics beyond the standard model (SM). In particular, with the axial-vector …

The combination of precise determinations of V us and V ud hints toward a violation of the
Cabibbo-Kobayashi-Maskawa matrix first row unitarity at about 3 σ level. Conversely, the …

The Fermi constant GF is extremely well measured through the muon lifetime, defining one
of the key fundamental parameters in the standard model (SM). Therefore, to search for …

A bstract The kaon sector is characterised by several processes which are under active
investigation across different experiments. In this work, we present the global picture that …

Starting from a general effective Lagrangian for lepton flavor violation (LFV) in quark-lepton
transitions, we derive constraints on the effective coefficients from the high-mass tails of the …