Dark Atoms: Asymmetry and Direct Detection
Abstract
We present a simple UV completion of Atomic Dark Matter (aDM) in which heavy right-handed neutrinos decay to induce both dark and lepton number densities. This model addresses several outstanding cosmological problems: the matter/anti-matter asymmetry, the dark matter abundance, the number of light degrees of freedom in the early universe, and the smoothing of small-scale structure. Additionally, this realization of aDM may reconcile the CoGeNT excess with recently published null results and predicts a signal in the CRESST Oxygen band. We also find that, due to unscreened long-range interactions, the residual un recombined dark ions settle into a diffuse isothermal halo.
Cite
@article{arxiv.1105.2073,
title = {Dark Atoms: Asymmetry and Direct Detection},
author = {David E. Kaplan and Gordan Z. Krnjaic and Keith R. Rehermann and Christopher M. Wells},
journal= {arXiv preprint arXiv:1105.2073},
year = {2015}
}
Comments
17 pages, 3 figures, expanded discussion of light degrees of freedom, minor typos corrected, to appear in JCAP