Beyond vanilla WIMPs and leptogenesis via extended scalar sectors

by Tommi Alanne (MPI Heidelberg)

Monday 22 Jul 2019, 15:00 → 16:00 Europe/Berlin

SR2 (Bldg. 2A)

It was realised recently that simple extensions of the Standard Model scalar sector could lead to interesting scenarios for dark matter and matter antimatter asymmetry beyond the vanilla type. I will discuss two such realisations: First, continuous global symmetries on the scalar sector can lead to pseudo-Goldstone dark matter which has negligible direct-detection cross section in the traditional WIPM mass range but has indirect detection possibility in the future. Second, coupling a singlet scalar to right-handed neutrinos can lead to new sources of CP violation and result in a low-scale leptogenesis scenario that can be probed in on-going and future experiments.