Speaker
Margaux Jomain
(LAPTh)
Description
Thermal Dark Matter (DM) below the GeV scale faces strong cosmological and astrophysical constraints, with Cosmic Microwave Background (CMB) observations excluding s-wave annihilation cross-sections for thermal DM below 10 GeV. Such limits can be evaded with velocity dependent cross-sections, for example when DM annihilates near a narrow resonance. In this work, we explore the impact of resonance effects on DM relic formation using a model-independent approach. We then derive constraints on s-wave annihilation models from CMB data and indirect detection observations, highlighting the viability and limitations of resonant production.
Authors
Mr
Cedric Delaunay
(LAPTh)
Mrs
Genevieve Belanger
(LAPTh)
Margaux Jomain
(LAPTh)
Mrs
Sreemanti Chakraborti
(Institute for Particle Physics Phenomenology, Department of Physics Durham University)
