Asymmetric sneutrino dark matter and the Ωb/ΩDM puzzle

• DOI: 10.1016/j.physletb.2004.11.047
• Publication Date: 2004-12-13T22:57:31Z
• Authors: Dan Hooper; John March-Russell; Stephen M. West
• Keywords: 0103 physical sciences; 01 natural sciences

The inferred values of the cosmological baryon and dark matter densities are strikingly similar, but in most theories early universe there is no true explanation this fact; particular, asymmetry thus density depends upon unknown, {\it a priori} unknown possibly small, CP-violating phases which independent all parameters determining density. We consider models possessing particle-antiparticle where determines both strongly effects density, naturally linking $\Omega_{\rm{b}}$ $\Omega_{\rm{dm}}$. show that sneutrinos can play role such previously studied variant MSSM light neutrino masses result from higher-dimensional supersymmetry-breaking terms.