Dark Matter from Gaugino Mediation

Details Dark Matter from Gaugino Mediation Dark Matter from Gaugino Mediation

2006-09-14

arxiv.org/abs/hep-ph/0609142v2

JCAP0611:007,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, updated to published version (minor modifications, reference added)

Scientific paper

10.1088/1475-7516/2006/11/007

We study dark matter for gaugino-mediated supersymmetry breaking and compact dimensions of order the grand unification scale. Higgs fields are bulk fields, and in general their masses differ from those of squarks and sleptons at the unification scale. As a consequence, at different points in parameter space, the gravitino, a neutralino or a scalar lepton can be the lightest (LSP) or next-to-lightest (NLSP) superparticle. We investigate the constraints from primordial nucleosynthesis on the different scenarios. While neutralino and gravitino dark matter with a sneutrino NLSP are consistent for a wide range of parameters, gravitino dark matter with a stau NLSP is strongly constrained.

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