Leptogenesis in models with keV sterile neutrino dark matter

摘要

We analyze leptogenesis in gauge extensions of the Standard Model with keV sterile neutrino dark matter. We find that both the observed dark matter abundance and the correct baryon asymmetry of the Universe can simultaneously emerge in these models. Both the dark matter abundance and the leptogenesis are controlled by the out-of-equilibrium decays of the same heavy right-handed neutrino.