Baryon Asymmetry and Dark Matter release_cwp6y4geazb4pfoikplpdqkq6a

Abstract

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.
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