Fermion Singlet Dark Matter in a Pseudoscalar Dark Matter Portal
High Energy Physics - Phenomenology
2021-10-07 v2
Abstract
We explore a simple extension to the Standard Model containing two gauge singlets: a Dirac fermion and a real pseudoscalar. In some regions of the parameter space both singlets are stable without the necessity of additional symmetries, then becoming a possible two-component dark matter model. We study the relic abundance production via freeze-out, with the latter determined by annihilations, conversions and semi-annihilations. Experimental constraints from invisible Higgs decay, dark matter relic abundance and direct/indirect detection are studied. We found three viable regions of the parameter space, and the model is sensitive to indirect searches.
Keywords
Cite
@article{arxiv.2105.04255,
title = {Fermion Singlet Dark Matter in a Pseudoscalar Dark Matter Portal},
author = {Bastián Díaz Sáez and Patricio Escalona and Sebastián Norero and Alfonso R. Zerwekh},
journal= {arXiv preprint arXiv:2105.04255},
year = {2021}
}