Light dark matter in the singlet-extended MSSM
Abstract
We discuss the possibility of light dark matter in a general singlet extension of the MSSM. Singlino LSPs with masses of a few GeV can explain the signals reported by the CRESST, CoGeNT and possibly also DAMA experiments. The interactions between singlinos and nuclei are mediated by a scalar whose properties coincide with those of the SM Higgs up to two crucial differences: the scalar has a mass of a few GeV and its interaction strengths are suppressed by a universal factor. We show that such a scalar can be consistent with current experimental constraints, and that annihilation of singlinos into such scalars in the early universe can naturally lead to a relic abundance consistent with the observed density of cold dark matter.
Keywords
Cite
@article{arxiv.1010.0553,
title = {Light dark matter in the singlet-extended MSSM},
author = {Rolf Kappl and Michael Ratz and Martin Wolfgang Winkler},
journal= {arXiv preprint arXiv:1010.0553},
year = {2015}
}
Comments
11 pages, 3 figures