Constraints on Minimal SUSY models with warm dark matter neutralinos

Details Constraints on Minimal SUSY models with warm dark matter neutralinos Constraints on Minimal SUSY models with warm dark matter neutralinos

2006-07-02

arxiv.org/abs/hep-ph/0607012v1

Phys.Lett. B643 (2006) 241-245

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 2 figures

Scientific paper

10.1016/j.physletb.2006.10.063

If the energy density of the Universe before nucleosynthesis is dominated by a scalar field $\phi$ that decays and reheats the plasma to a low reheating temperature $T_{RH}$, neutralinos may be warm dark matter particles. We study this possibility and derive the conditions on the production mechanism and on the supersymmetric spectrum for which it is viable. Large values of the $\mu$ parameter and of the slepton masses are characteristic features of these models. We compute the expected direct detection cross sections and point out that Split-SUSY provides a natural framework for neutralino warm dark matter

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