Quantum Chromodynamics, the theory of quarks and gluons, whose interactions can be
described by a local SU (3) gauge symmetry with charges called “color quantum numbers” …

We present an overview of searches for violation of lepton flavor universality with a focus on
low energy precision probes using π, K, τ, and nuclear beta decays. We review the current …

Hadronic vacuum polarization (HVP) is not only a critical part of the standard model (SM)
prediction for the anomalous magnetic moment of the muon (g-2) μ, but also a crucial …

A bstract We investigate the high-p T tails of the pp→ ℓν and pp→ ℓℓ Drell-Yan processes as
probes of New Physics in semileptonic interactions with an arbitrary flavor structure. For this …

A bstract In recent years, experiments revealed intriguing hints for new physics (NP) in semi-
leptonic B decays. Both in charged current processes, involving b→ cτν transitions, and in …

A bstract The “Cabibbo Angle Anomaly”(CAA) originates from the disagreement between the
CKM elements V ud and V us extracted from superallowed beta and kaon decays …

Measurements of the branching ratios of B→ D (*) τ ν¯/B→ D (*) ℓ ν¯ and B c→ J/ψ τ ν¯/B
c→ J/ψ ℓ ν¯ by the BABAR, Belle and LHCb collaborations consistently point towards an …

The field of particle physics is at the crossroads. The discovery of a Higgs-like boson
completed the Standard Model (SM), but the lacking observation of convincing resonances …

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 …

Recently, both ATLAS and CMS measured the decay h→ μ+ μ-, finding a signal strength
with respect to the standard model expectation of 1.2±0.6 and 1.19-0.39-0.16+ 0.41+ 0.17 …