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 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 , where this analysis is most sensitive, a cross section of is excluded at 90% C.L. At higher WIMP masses, the combination improves the individual limits, by a factor 1.6 above . Alternative methods of combining the data provide stronger constraints for some ranges of WIMP masses and weaker constraints for others.
- Received 18 May 2011
DOI:https://doi.org/10.1103/PhysRevD.84.011102
© 2011 American Physical Society