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arXiv · 1105.2073

Dark Atoms: Asymmetry and Direct Detection

David E. Kaplan·Gordan Z. Krnjaic·Keith R. Rehermann·Christopher M. Wells
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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.

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David E. Kaplan, Gordan Z. Krnjaic, Keith R. Rehermann, Christopher M. Wells. 2011-05-10. Dark Atoms: Asymmetry and Direct Detection. https://doi.org/10.1088/1475-7516/2011/10/011

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