Extended Zee model for Neutrino Mass, Leptogenesis and Sterile Neutrino like Dark Matter

Abstract

We propose an extension of the standard model with a $U(1{)}_{\mathrm{B}-\mathrm{L}}$ global symmetry that accommodates radiative neutrino masses along with dark matter and leptogenesis. The observed matter antimatter asymmetry of the universe is generated through the leptogenesis route keeping the $U(1{)}_{\mathrm{B}-\mathrm{L}}$ symmetry intact. The $B-L$ global symmetry is then softly broken, providing the sub-eV neutrino masses. The model then incorporates a MeV scale sterile neutrino like dark matter.

Comments: Significantly revised, accepted for publication in PRD