Higgsino dark matter in partly supersymmetric models

Details Higgsino dark matter in partly supersymmetric models Higgsino dark matter in partly supersymmetric models

2005-10-24

arxiv.org/abs/hep-ph/0510311v2

Phys.Rev. D73 (2006) 015007

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 3 figures, version to appear in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.73.015007

Models where supersymmetry (SUSY) is manifest only in a sector of the low-energy spectrum have been recently proposed as an alternative to the MSSM. In these models the electroweak scale is explained by a fine-tuning between different Higgs mass contributions (split-SUSY models), or by the localization of the Higgs sector in a point of an extra dimension where all the mass parameters are suppressed by the metric (partly-SUSY models). Therefore, the presence of a good dark matter candidate becomes the main motivation for (partial) low-energy SUSY. We study this issue in minimal frameworks where the higgsinos are the only light supersymmetric particles. Whereas in split-SUSY models the higgsino should have a mass around 1 TeV, we show that in partly-SUSY models the lightest higgsino could also be found below MW.

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