Gravitino production from reheating in split supersymmetry

Details Gravitino production from reheating in split supersymmetry Gravitino production from reheating in split supersymmetry

2004-10-12

arxiv.org/abs/hep-ph/0410169v2

Phys.Rev. D71 (2005) 043505

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, RevTeX4, typos corrected, references added

Scientific paper

10.1103/PhysRevD.71.043505

We discuss gravitino production from reheating in models where the splitting between particle and sparticle masses can be larger than TeV, as naturally arising in the context of split supersymmetry. We show that such a production typically dominates over thermal contributions arising from the interactions of gauginos, squarks and sleptons. We constrain the supersymmetry breaking scale of the relevant sector for a given reheat temperature. However the situation changes when the gravitinos dominate the Universe and decay before nucleosynthesis. We briefly describe prospects for a successful baryogenesis and a viable neutralino dark matter in this case.

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