10-17 July 2019
Ghent
Europe/Brussels timezone

A feeble window on leptophilic dark matter

12 Jul 2019, 10:40
20m
Campus Ledeganck - Aud. 2 (Ghent)

Campus Ledeganck - Aud. 2

Ghent

Parallel talk Cosmology Cosmology

Speaker

Sam Junius (ULB/VUB)

Description

In this this talk, I will discus a leptophilic dark matter scenario involving feeble dark matter coupling to the Standard Model (SM) and compressed dark matter-mediator mass spectrum. I will consider a simplified model where the SM is extended with one Majorana fermion, the dark matter, and one charged scalar, the mediator, coupling to the SM leptons through a Yukawa interaction. I will first discuss the dependence of the dark matter relic abundance on the Yukawa coupling going continuously from freeze-in to freeze-out with an intermediate stage of conversion driven freeze-out. Focusing on the latter, I will then exploit the macroscopic decay length of the charged scalar to study the resulting long-lived-particle signatures at collider and to explore the experimental reach on the viable portion of the parameter space.

Primary author

Sam Junius (ULB/VUB)

Co-authors

Laura Lopez Honorez (Vrije Universiteit Brussel) Alberto Mariotti (VUB Brussels)

Presentation Materials