Jul 4 – 11, 2018
COEX, SEOUL
Asia/Seoul timezone

Light Dark Matter through Assisted Annihilation

Jul 6, 2018, 6:30 PM
2h
COEX, SEOUL

COEX, SEOUL

Poster Astro-particle Physics and Cosmology POSTER

Speaker

Tarak Nath Maity (IIT Kharagpur)

Description

We investigate light dark matter scenarios where annihilation to Standard Model particles at tree-level is kinematically forbidden. In such cases annihilation can be aided by massive Standard Model-like species, called assisters, in the initial state that enhances the available phase space opening up novel tree-level processes. We investigate the feasibility of such non-standard assisted annihilation processes to reproduce the observed relic density of dark matter. We present a simple model where this is realised. We find that if the dark matter and assister are relatively degenerate the required relic density can be achieved for a keV-MeV scale dark matter. We briefly discuss the astrophysical and cosmological constraints on such dark matter scenarios.

Primary author

Tarak Nath Maity (IIT Kharagpur)

Co-authors

Dr Ujjal Kumar Dey (IIT Kharagpur) Prof. Tirtha Sankar Ray (IIT Kharagpur)

Presentation materials

There are no materials yet.