Dark Matter as a weakly coupled Dark Baryon
High Energy Physics - Phenomenology
2017-11-21 v2 Cosmology and Nongalactic Astrophysics
Abstract
Dark Matter might be an accidentally stable baryon of a new confining gauge interaction. We extend previous studies exploring the possibility that the DM is made of dark quarks heavier than the dark confinement scale. The resulting phenomenology contains new unusual elements: a two-stage DM cosmology (freeze-out followed by dark condensation), a large DM annihilation cross section through recombination of dark quarks (allowing to fit the positron excess). Light dark glue-balls are relatively long lived and give extra cosmological effects; DM itself can remain radioactive.
Cite
@article{arxiv.1707.05380,
title = {Dark Matter as a weakly coupled Dark Baryon},
author = {Andrea Mitridate and Michele Redi and Juri Smirnov and Alessandro Strumia},
journal= {arXiv preprint arXiv:1707.05380},
year = {2017}
}
Comments
New version published in JHEP