Cogenesis of visible and dark matter in a scotogenic model

Abstract

Within a scotogenic neutrino mass model we explore the cogenesis of matter from the CP violating decay of a heavy $\mathbb{Z}_2$-odd right handed neutrino that simultaneously populates the visible and a multipartite dark sector. The quantum of CP violation sets the baryon asymmetry in the visible sector driven by leptogenesis. The relic density of a sub-GeV scale freeze-in dark matter is generated by the late time decay of the next to lightest dark particle dynamically regulated by its interplay with the thermal scattering processes.