Baryon Asymmetry and Dark Matter

Details Baryon Asymmetry and Dark Matter Baryon Asymmetry and Dark Matter

1998-09-14

arxiv.org/abs/hep-ph/9809381v2

Phys.Lett. B443 (1998) 209-213

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 2 figures included, eq. (13) replaced by leading order approximation

Scientific paper

10.1016/S0370-2693(98)01342-2

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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