RH Sneutrino Condensate CDM and the Baryon-to-Dark Matter Ratio

Details RH Sneutrino Condensate CDM and the Baryon-to-Dark Matter Ratio RH Sneutrino Condensate CDM and the Baryon-to-Dark Matter Ratio

2007-10-12

arxiv.org/abs/0710.2360v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Submitted for the SUSY07 proceedings, 4 pages, LaTeX, 2 eps figures

Scientific paper

The similarity of the observed mass densities of baryons and cold dark matter may be a sign they have a related origin. The baryon-to-dark matter ratio can be understood in the MSSM with right-handed (RH) neutrinos if CDM is due to a d = 4 flat direction condensate of very weakly coupled RH sneutrino LSPs and the baryon asymmetry is generated by Affleck-Dine leptogenesis along a d = 4 (H_{u}L)^2 flat direction. Observable signatures of the model include CDM and baryon isocurvature perturbations and distinctive long-lived NLSP phenomenology.

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