Limits on spin-dependent WIMP-nucleon interactions from the Cryogenic Dark Matter Search

Creators: Akerib, D. S.; Golwala, S. R.; Wang, G.; CDMS Collaboration

Abstract

The Cryogenic Dark Matter Search (CDMS) is an experiment to detect weakly interacting massive particles (WIMPs), which may constitute the universe's dark matter, based on their interactions with Ge and Si nuclei. We report the results of an analysis of data from the first two runs of CDMS at the Soudan Underground Laboratory in terms of spin-dependent WIMP-nucleon interactions on ^(73)Ge and ^(29)Si. These data exclude new regions of WIMP parameter space, including regions relevant to spin-dependent interpretations of the annual modulation signal reported by the DAMA/NaI experiment.

Additional Information

© 2006 American Physical Society. Received 9 September 2005; published 11 January 2006. The authors thank E. Baltz and J. Engel for useful conversations, and the technical and support staff at our various institutions. This work is supported by the National Science Foundation under Grant No. AST-9978911 and No. PHY-9722414, by the Department of Energy under Contract Nos. DE-AC03-76SF00098, DE-FG03-90ER40569, DE-FG03-91ER40618, and by Fermilab, operated by the Universities Research Association, Inc., under Contract No. DE-AC02-76CH03000 with the Department of Energy. The ZIP detectors were fabricated in the Stanford Nanofabrication Facility of NNIN supported by NSF under Grant No. ECS-9731293.

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