Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-05-18
Phys.Rev.D84:041301,2011
Physics
High Energy Physics
High Energy Physics - Phenomenology
5 pages, 1 figure. v2 updated refs and CoGeNT data, confidence regions now shown at 95%
Scientific paper
10.1103/PhysRevD.84.041301
DAMA observes an annual modulation in their event rate, as might be expected from dark matter scatterings, while CoGeNT has reported evidence for a similar modulation. The simplest interpretation of these findings in terms of dark matter-nucleus scatterings is excluded by other direct detection experiments. We consider the robustness of these exclusions with respect to assumptions regarding the scattering and find that isospin-violating inelastic dark matter helps alleviate this tension and allows marginal compatibility between experiments. Isospin-violation can significantly weaken the XENON constraints, while inelasticity enhances the annual modulation fraction of the signal, bringing the CoGeNT and CDMS results into better agreement.
Frandsen Mads T.
Kahlhoefer Felix
March-Russell John
McCabe Christopher
McCullough Matthew
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