Journal
PHYSICS LETTERS B
Volume 703, Issue 2, Pages 124-127Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2011.07.083
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Funding
- NSF [PHY-0653656, PHY-0970173]
- DOE [DE-FG02-04ER41291, DE-FG02-04ER41308, HY-0544278]
- Direct For Mathematical & Physical Scien
- Division Of Physics [970173] Funding Source: National Science Foundation
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Searches for dark matter scattering off nuclei are typically compared assuming that the dark matter's spin-independent couplings are identical for protons and neutrons. This assumption is neither innocuous nor well motivated. We consider isospin-violating dark matter (IVDM) with one extra parameter, the ratio of neutron to proton couplings, and include the isotope distribution for each detector. For a single choice of the coupling ratio, the DAMA and CoGeNT signals are consistent with each other and with current XENON constraints, and they unambiguously predict near future signals at XENON and CRESST. We provide a quark-level realization of IVDM as WIMPless dark matter that is consistent with all collider and low-energy bounds. (C) 2011 Elsevier B.V. All rights reserved.
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