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

TL;DR

This paper investigates sterile neutrino dark matter production within a U(1) extended standard model, analyzing freeze-in and freeze-out mechanisms, parameter spaces, and experimental constraints for potential detection.

Contribution

It introduces a detailed analysis of sterile neutrino dark matter production in a U(1) extension, highlighting parameter spaces and experimental constraints.

Findings

Favored parameter space identified for super-weak coupling and gauge boson mass.

Constraints from experiments limit the viable dark matter production scenarios.

Detection possibilities are outlined based on the model's parameter space.

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.