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Combined limits on WIMPs from the CDMS and EDELWEISS experiments


CDMS; Ahmed, Z; Akerib, D S; Armengaud, E; Arrenberg, S; Augier, C; Baudis, L; Yoo, J (2011). Combined limits on WIMPs from the CDMS and EDELWEISS experiments. Physical Review D, 84(1):011102.

Abstract

The CDMS and EDELWEISS collaborations have combined the results of their direct searches for dark matter using cryogenic germanium detectors. The total data set represents 614  kg·days equivalent exposure. A straightforward method of combination was chosen for its simplicity before data were exchanged between experiments. The results are interpreted in terms of limits on spin-independent weakly interacting, massive particle (WIMP)-nucleon cross section. For a WIMP mass of 90  GeV/c2, where this analysis is most sensitive, a cross section of 3.3×10-44  cm2 is excluded at 90% C.L. At higher WIMP masses, the combination improves the individual limits, by a factor 1.6 above 700  GeV/c2. Alternative methods of combining the data provide stronger constraints for some ranges of WIMP masses and weaker constraints for others.

© 2011 American Physical Society

Abstract

The CDMS and EDELWEISS collaborations have combined the results of their direct searches for dark matter using cryogenic germanium detectors. The total data set represents 614  kg·days equivalent exposure. A straightforward method of combination was chosen for its simplicity before data were exchanged between experiments. The results are interpreted in terms of limits on spin-independent weakly interacting, massive particle (WIMP)-nucleon cross section. For a WIMP mass of 90  GeV/c2, where this analysis is most sensitive, a cross section of 3.3×10-44  cm2 is excluded at 90% C.L. At higher WIMP masses, the combination improves the individual limits, by a factor 1.6 above 700  GeV/c2. Alternative methods of combining the data provide stronger constraints for some ranges of WIMP masses and weaker constraints for others.

© 2011 American Physical Society

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Additional indexing

Contributors:CDMS, Edelweiss Collaborations
Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
07 Faculty of Science > Institute for Computational Science
Dewey Decimal Classification:530 Physics
Language:English
Date:2011
Deposited On:12 Feb 2012 17:19
Last Modified:05 Apr 2016 15:34
Publisher:American Physical Society
ISSN:1550-7998 (P) 1089-4918 (E)
Publisher DOI:https://doi.org/10.1103/PhysRevD.84.011102
Related URLs:http://arxiv.org/abs/1105.3377

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Content: Accepted Version
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