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 …

With the establishment and maturation of the experimental programs searching for new
physics with sizeable couplings at the LHC, there is an increasing interest in the broader …

We review the landscape of QCD axion models. Theoretical constructions that extend the
window for the axion mass and couplings beyond conventional regions are highlighted and …

Black hole superradiance is a powerful probe of light, weakly coupled hidden sector
particles. Many candidate particles, such as axions, generically have self-interactions that …

The quantum chromodynamics (QCD) axion may modify the cooling rates of neutron stars
(NSs). The axions are produced within the NS cores from nucleon bremsstrahlung and …

While astrophysical and cosmological probes provide a remarkably precise and consistent
picture of the quantity and general properties of dark matter, its fundamental nature remains …

Dark matter is one of the greatest mysteries in physics. It interacts via gravity and composes
most of our universe, but its elementary composition is unknown. We search for …

Axion production from astrophysical bodies is a topic in continuous development, because
of theoretical progress in the estimate of stellar emission rates and, especially, because of …

We review the physics potential of a next generation search for solar axions: the
International Axion Observatory (IAXO). Endowed with a sensitivity to discover axion-like …

A bstract Thermal axion production in the early universe goes through several mass
thresholds, and the resulting rate may change dramatically across them. Focusing on the …