Particle physics today faces the challenge of explaining the mystery of dark matter, the origin
of matter over anti-matter in the Universe, the origin of the neutrino masses, the apparent …

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 …

High energy collisions at the High-Luminosity Large Hadron Collider (LHC) produce a large
number of particles along the beam collision axis, outside of the acceptance of existing LHC …

The existence of nonzero neutrino masses points to the likely existence of multiple Standard
Model neutral fermions. When such states are heavy enough that they cannot be produced …

A bstract Axions and axion-like particles (ALPs) are well-motivated low-energy relics of high-
energy extensions of the Standard Model (SM). We investigate the phenomenology of an …

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 …

Belle II has reported the first evidence for B+→ K+ ν ν¯ with a branching ratio 2.7 σ higher
than the standard model expectation. We explain this and the MiniBooNE and muon …

A bstract We present a comprehensive analysis of electroweak, flavor, and collider bounds
on the complete set of dimension-six SMEFT operators in the U (2) 5-symmetric limit. This …

We estimate the maximum direct detection cross section for sub-GeV dark matter (DM)
scattering off nucleons. For DM masses in the range 10 keV–100 MeV, cross sections …

A bstract In this paper we explore the coupling of a light axion-like particle (ALP) to top
quarks. We use high-energy LHC probes, and examine both the direct probe to this coupling …