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XENON10/100 dark matter constraints in comparison with CoGeNT and DAMA: Examining the L(eff) dependence
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC).
2011 (English)In: Physical Review D, ISSN 1550-7998, E-ISSN 1550-2368, Vol. 83, no 5, 055002- p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2011. Vol. 83, no 5, 055002- p.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-69447DOI: 10.1103/PhysRevD.83.055002ISI: 000287961100005OAI: oai:DiVA.org:su-69447DiVA: diva2:477798
Note
authorCount :4Available from: 2012-01-13 Created: 2012-01-12 Last updated: 2017-12-08Bibliographically approved

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