Resonant Sub-GeV Dirac Dark Matter
Abstract
We study the phenomenology and detection prospects of a sub-GeV Dirac dark matter candidate with resonantly enhanced annihilations via a dark photon mediator. The model evades cosmological constraints on light thermal particles in the early universe while simultaneously being in reach of current and upcoming terrestrial experiments. We conduct a global analysis of the parameter space , considering bounds from accelerator and direct detection experiments, as well as those arising from Big Bang Nucleosynthesis, the Cosmic Microwave Background and dark matter self-interactions. We also extend our discussion to the case of a dark matter subcomponent. We find that large regions of parameter space remain viable even for the case of a moderate resonant enhancement, and demonstrate the complementarity of different experimental strategies for further exploring this scenario.
Cite
@article{arxiv.2010.14522,
title = {Resonant Sub-GeV Dirac Dark Matter},
author = {Elias Bernreuther and Saniya Heeba and Felix Kahlhoefer},
journal= {arXiv preprint arXiv:2010.14522},
year = {2021}
}
Comments
20 pages, 7 figures + appendices; v2: matches published version; v3: minor correction to figure 7, conclusions unchanged