[W53] Anirban Das: Dissipation Mechanisms from Multi-level Dark Matter Scattering

Wednesday 29 November 2017. 15:00 GMT

Questions via youtube chat

Dissipation Mechanisms from Multi-level Dark Matter Scattering

Speaker
Anirban Das
Tata Institute of Fundamental Research, India

Host
Camilo Garcia-Cely

Abstract
Self-interacting dark matter models are interesting to study for various purposes. In many such models the dark matter species has more than one state which are typically separated by small mass gaps. The presence of heavier excited states leads to the possibility of inelastic scattering when two dark matter particles collide with each other. The upscattered particles can decay back to the ground state emitting other lighter particles in the process. This gives rise to new dissipative phenomena which are important for halo dynamics. I shall discuss the physics of inelastic scattering in the context of a simple two-level dark matter model and talk about the effects of the dissipation mechanisms on dark matter halo structure and evolution.

References
http://arxiv.org/abs/1709.06577

Slides

Leave a Reply

Please log in using one of these methods to post your comment:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.