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Higgsino dark matter in partly supersymmetric models

Manuel Masip·Iacopo Mastromatteo
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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.

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Manuel Masip, Iacopo Mastromatteo. 2006-01-07. Higgsino dark matter in partly supersymmetric models. https://doi.org/10.1103/physrevd.73.015007

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