Multi-component secluded WIMP dark matter and Dirac neutrino masses with an extra Abelian gauge symmetry

TL;DR

This paper presents a comprehensive UV-complete model for secluded WIMP dark matter with an extra Abelian gauge symmetry, featuring two-component dark matter, mediators, and Dirac neutrino masses, compatible with cosmological constraints.

Contribution

It provides a complete UV realization of a secluded WIMP dark matter model with novel two-component dark matter candidates and mechanisms for neutrino mass generation.

Findings

Dark matter relic density influenced by dark matter conversion processes.

Model predicts signals testable in future direct detection experiments.

Compatible with cosmological constraints without kinetic mixing.

Abstract

Scenarios for secluded WIMP dark matter models have been extensively studied in simplified versions. This paper shows a complete UV realization of a secluded WIMP dark matter model with an extra Abelian gauge symmetry that includes two-component dark matter candidates, where the dark matter conversion process plays a significant role in determining the relic density in the Universe. The model contains two new unstable mediators: a dark Higgs and a dark photon. It generates Dirac neutrino masses and can be tested in future direct detection experiments of dark matter. The model is also compatible with cosmological and theoretical constraints, including the branching ratio of Standard model particles into invisible, Big Bang nucleosynthesis restrictions, and the number of relativistic degrees of freedom in the early Universe, even without kinetic mixing.