Abstract

Pseudoscalar particles are ubiquitous in models of New Physics and could mediate the interactions of dark matter with the visible sector. Although direct detection experiments are fairly inefficient in constraining such scenarios, they can be tested through a combination of collider, cosmological and astrophysical probes. I will discuss the interplay between these observables in a simple pseudoscalar-mediated dark matter model and comment upon how these constraints evolve within UV-complete New Physics scenarios. Time permitting, I will also briefly discuss alternative ideas about the generation of the dark matter abundance in the Universe which imply a radically different phenomenology at the LHC.