Higgsino dark matter in partly supersymmetric models

Abstract

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.

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

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• DarkSUSY: Computing Supersymmetric Dark Matter Properties Numerically
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Cited by in corpus (10)

• The MSSM with heavy scalars
• TASI Lectures on a Holographic View of Beyond the Standard Model Physics
• Les Houches Lectures on Warped Models and Holography
• Discriminating 4D supersymmetry from its 5D warped version
• Naturalness redux
• New physics from ultrahigh energy cosmic rays
• Neutralino-nucleon interaction in the Split SUSY scenario of the Dark Matter
• Diagonalization of the neutralino mass matrix and boson-neutralino interaction
• Mass-varying Dark Matter from a Phase Transition
• Topics in Supergravity Phenomenology