Cosmological Abundance of Colored Relics
High Energy Physics - Phenomenology
2019-02-06 v1
Abstract
The relic cosmological abundance of stable or long-lived neutral colored particles gets reduced by about a few orders of magnitude by annihilations that occur after QCD confinement. We compute the abundance and the cosmological bounds on relic gluinos. The same post-confinement effect strongly enhances co-annihilations with a lighter Dark Matter particle, provided that their mass difference is below a few GeV. Charged colored particles (such as stops) can instead form baryons, which can be (quasi)stable in some models.
Keywords
Cite
@article{arxiv.1811.08418,
title = {Cosmological Abundance of Colored Relics},
author = {Christian Gross and Andrea Mitridate and Michele Redi and Juri Smirnov and Alessandro Strumia},
journal= {arXiv preprint arXiv:1811.08418},
year = {2019}
}
Comments
24 pages, 7 figures