Journal
PHYSICAL REVIEW D
Volume 83, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.83.055002
Keywords
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Funding
- Swedish Research Council (VR) through the Oskar Klein Centre
- U.S. Department of Energy [DE-FG03-91ER40662]
- NFS at the University of Utah [PHY-0456825]
- DOE
- Michigan Center for Theoretical Physics via the University of Michgian
- INFN
- Direct For Mathematical & Physical Scien
- Division Of Physics [756962] Funding Source: National Science Foundation
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We consider the compatibility of DAMA/LIBRA, CoGeNT, XENON10 and XENON100 results for spin-independent (SI) dark matter weakly interacting massive particles, particularly at low masses (similar to 10 GeV), assuming a standard dark matter halo. The XENON bounds depend on the scintillation efficiency factor L-eff for which there is considerable uncertainty. Thus we consider various extrapolations for L-eff at low energy. With the L-eff measurements we consider, XENON100 results are found to be insensitive to the low-energy extrapolation. We find the strongest bounds are from XENON10, rather than XENON100, due to the lower energy threshold. For reasonable choices of L-eff and for the case of SI elastic scattering, XENON10 is incompatible with the DAMA/LIBRA 3 sigma region and severely constrains the 7-12 GeV WIMP mass region of interest published by the CoGeNT Collaboration.
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