Speaker
Mubarak Mohammed
(UCLouvain-CP3)
Description
The relic abundance of Dark Matter (DM) produced via thermal freeze-in is sensitive to the thermal history during and after cosmic reheating. In minimal models, this opens up the possibility to make predictions for collider observables by combining the requirement to match the DM relic abundance with observations of the Cosmic Microwave Background (CMB). We assess the impact of thermal corrections to the rate of cosmic reheating and the rate of thermal DM production on CMB observables and the relic abundance. We find that such corrections are generally negligible in the regime where perturbation theory can be applied. We construct counter-examples where this general rule is violated.
Authors
Marco Drewes
(UCLouvain-CP3)
Yannis Georis
(University of Tokyo - IPMU)
Mubarak Mohammed
(UCLouvain-CP3)
Sebastian Zell
(LMU Munich)