27 Sep/23
11:30 - 13:30 (Europe/Zurich)

Dark matter and baryogenesis from long-lived particles in the visible sector


4/2-011 at CERN

I present a minimal extension of the standard model, including a long-lived fermion with weak-scale mass and an O(GeV) fermionic dark matter candidate. Decays of a TeV-scale colored scalar in a radiation-dominated phase bring the former to a thermal abundance and also produce dark matter. The long-lived fermion then drives a period of early matter domination and subsequently decays to reheat the universe and also generate a baryon asymmetry. The allowed parameter space of this model can be probed by proposed long-lived particle searches as well as next-generation neutron-antineutron oscillation experiments.