APEC Seminar (Astronomy - Particle Physics - Experimental Physics - Cosmology)

Speaker: Satyanarayan Mukhopadhyay (IACS)
Title: Asymmetric dark matter from scattering
Date (JST): Wed, Jun 02, 2021, 16:00 - 17:00
Place: Zoom
Related File: 2663.pdf
Abstract: I shall discuss two scenarios for the production of dark matter (DM) density in the early Universe, and a possible particle-antiparticle asymmetry in the DM sector, from scattering processes. In the first scenario, we show that a general semi-annihilation process by itself can lead to a near maximal asymmetry. In the second scenario, taking the example of a complex scalar singlet DM, we show an interesting interplay of DM self-scatterings and annihilations in determining its density and composition, the role of DM self-scatterings in this context being a novel phenomenon.