Dark Atoms: Asymmetry and Direct Detection

Details Dark Atoms: Asymmetry and Direct Detection Dark Atoms: Asymmetry and Direct Detection

2011-05-10

arxiv.org/abs/1105.2073v3

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, 3 figures, expanded discussion of light degrees of freedom, minor typos corrected, to appear in JCAP

Scientific paper

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.

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