Sterile neutrino dark matter in a U(1) extension of the standard model

Abstract

We explore the possibilities of dark matter production in a U(1) extension of the standard model, also called the super-weak model. The freeze-in and freeze-out mechanisms are described in detail, assuming the lightest sterile neutrino in the model as the dark matter candidate. In both scenarios we present the favoured parameter space on the plane of super-weak coupling versus the new gauge boson mass. We discuss the experimental constraints limiting each case and outline possibilities of detection.

Comments: Contribution to Matter To The Deepest: Recent Developments In Physics Of Fundamental Interactions XLIV International Conference of Theoretical Physics, 2021