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.
Keywords
Cite
@article{arxiv.hep-ph/0510311,
title = {Higgsino dark matter in partly supersymmetric models},
author = {Manuel Masip and Iacopo Mastromatteo},
journal= {arXiv preprint arXiv:hep-ph/0510311},
year = {2009}
}
Comments
12 pages, 3 figures, version to appear in Phys. Rev. D