DAMA and CoGeNT without astrophysical uncertainties

Details DAMA and CoGeNT without astrophysical uncertainties DAMA and CoGeNT without astrophysical uncertainties

2011-07-04

arxiv.org/abs/1107.0741v2

Phys.Rev.D84:043525,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 3 figures. v2 Refs updated, typos corrected and Section V updated to include discussion of CDMS II-Si and XENON10

Scientific paper

10.1103/PhysRevD.84.043525

The CoGeNT collaboration has reported evidence of an annual modulation in its first fifteen months of data. Here we compare the amplitude and phase of this signal to the modulation observed by the DAMA collaboration, assuming that both arise due to elastically scattering dark matter (DM). We directly map the CoGeNT signal to the DAMA detector without specifying any astrophysical parameters and compare this with the signal measured by DAMA. We also compare with constraints from CDMS II and XENON10. We find that DM of mass 5-14 GeV that couples equally to protons and neutrons is strongly disfavoured. Isospin-violating DM fares better but requires a boosted modulation fraction.

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