A light scalar WIMP through the Higgs portal?

Details A light scalar WIMP through the Higgs portal? A light scalar WIMP through the Higgs portal?

2010-12-02

arxiv.org/abs/1012.0576v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages; proceedings of IDM2010 meeting, Montpellier, France, July 26-30, 2010

Scientific paper

In these proceedings, I report on the status of a simple singlet scalar dark matter model in the light of recent results from both direct detection experiments, in particular DAMA, CoGeNT, CDMS-II and Xenon10/100, and indirect searches, in particular Fermi-LAT. Specifically, I confront the light scalar WIMP candidates, M_DM ~ few GeV, that are consistent with CoGeNT and/or DAMA, to constraints that may be set using the recent Fermi-LAT data on Milky Way dwarf spheroidal galaxies (dSphs) and the isotropic diffuse gamma-ray emission. I show that the latter observations set relevant exclusion limits on the lightest WIMP candidates.

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