Speaker
Francesco Costa
(University of Göttingen, ITP)
Description
We consider a $U(1)_D$ extension of the Standard Model
that accounts for the neutrino masses and study in detail dark matter
phenomenology. The model under consideration includes a vector WIMP and a
fermion FIMP dark matter candidates and thus gives rise to two-component dark
matter scenarios. We discuss different regimes and mechanisms of production and
the interplay between neutrino masses and dark matter relic density. We show that
the WIMP and FIMP together compose the observed relic density today with
comparable contributions. Finally, we study the connection between the dark
matter and the gravitational waves originating from the strong first-order phase
transition in the scalar sector.
Primary author
Francesco Costa
(University of Göttingen, ITP)
