Abstract The Physics Beyond Colliders initiative is an exploratory study aimed at exploiting
the full scientific potential of the CERN's accelerator complex and scientific infrastructures …

A bstract There are two tensions related to the Cabibbo angle of the CKM matrix. First, the
determinations of V us from K μ2, K ℓ3, and τ decays disagree at the 3σ level. Second, using …

In 1988 the NA31 experiment presented the first evidence of direct CP violation in the decay
amplitudes. A clear signal with a statistical significance was later established with the full …

A bstract We analyse for the first time the CP violating ratio ε′/ε in K→ ππ decays in
leptoquark (LQ) models. Assuming a mass gap to the electroweak (EW) scale, the main …

A bstract We study the patterns of flavour violation in renormalisable extensions of the
Standard Model (SM) that contain vector-like quarks (VLQs) in a single complex …

A bstract The K→ μ+ μ− decay is often considered to be uninformative of fundamental theory
parameters since the decay is polluted by long-distance hadronic effects. We demonstrate …

A bstract We present a model-independent anatomy of the∆ F= 2 transitions K 0−\({\overline
{K}}^ 0\), B s, d−\({\overline {B}} _ {s, d}\) and D 0−\({\overline {D}}^ 0\) in the context of the …

A timely and long-term programme of kaon decay measurements at a new level of precision
is presented, leveraging the capabilities of the CERN Super Proton Synchrotron (SPS). The …

A timely and long-term programme of kaon decay measurements at an unprecedented level
of precision is presented, leveraging the capabilities of the CERN Super Proton Synchrotron …

We study the phenomenology of simplified Z′ models with a global U (2) 3 flavor symmetry
in the quark sector, broken solely by the Standard Model Yukawa couplings. This flavor …