Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-04-05
Physics
High Energy Physics
High Energy Physics - Phenomenology
31 text pages, 4 figures, revision includes corrected Germanium quenching factor and clarified text in Sec. 5
Scientific paper
TeV-mass dark matter charged under a new GeV-scale gauge force can explain electronic cosmic-ray anomalies. We propose that the CoGeNT and DAMA direct detection experiments are observing scattering of light stable states -- "GeV-Matter" -- that are charged under this force and constitute a small fraction of the dark matter halo. Dark higgsinos in a supersymmetric dark sector are natural candidates for GeV-Matter that scatter off protons with a universal cross-section of 5 x 10^{-38} cm^2 and can naturally be split by 10-30 keV so that their dominant interaction with protons is down-scattering. As an example, down-scattering of an O(5) GeV dark higgsino can simultaneously explain the spectra observed by both CoGeNT and DAMA. The event rates in these experiments correspond to a GeV-Matter abundance of 0.2-1% of the halo mass density. This abundance can arise directly from thermal freeze-out at weak coupling, or from the late decay of an unstable TeV-scale WIMP. Our proposal can be tested by searches for exotics in the BaBar and Belle datasets.
Essig Rouven
Kaplan Jared
Schuster Philip
Toro Natalia
No associations
LandOfFree
On the Origin of Light Dark Matter Species does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with On the Origin of Light Dark Matter Species, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the Origin of Light Dark Matter Species will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-56466