Speaker
Oscar Zapata
Description
We revisit a recently proposed framework in which dark matter (DM) consists of pions originating from a strongly interacting hidden sector analogous to QCD. A non-vanishing topological theta angle plays a central role by inducing resonant number-changing interactions that can account for the observed DM relic abundance and yield velocity-dependent DM self-interactions. We investigate the coupling between the dark and visible sectors via a massive dark photon. This connection is crucial for understanding the thermal equilibrium, DM stability, and constraints from indirect detection. Our findings confirm this framework is a consistent and predictive model for DM.
