Baryon asymmetry and dark matter

M. Bolz, W. Buchmüller, M. Plümacher
1998 Physics Letters B  
We study the implications of a large baryogenesis temperature, $T_B = O(10^{10}$ GeV), on the mass spectrum of superparticles in supersymmetric extensions of the standard model. Models with a neutralino as lightest superparticle (LSP) are excluded. A consistent picture is obtained with the gravitino as LSP, followed by a higgsino-like neutralino (NSP). Gravitinos with masses from 10 to 100 GeV may be the dominant component of dark matter.
doi:10.1016/s0370-2693(98)01342-2 fatcat:2bchlwzzknba5jtsbgq7cgvqfq