Limits on spin-dependent WIMP-nucleon cross-sections from the first ZEPLIN-II data

Abstract

The first underground data run of the ZEPLIN-II experiment has set a limit on the nuclear recoil rate in the two-phase xenon detector for direct dark matter searches. In this paper the results from this run are converted into the limits on spin-dependent WIMP-proton and WIMP-neutron cross-sections. The minimum of the curve for WIMP-neutron cross-section corresponds to 0.07 pb at a WIMP mass of around 65 GeV.

12 pages, 2 figures, to be published in Physics Letters B

References in corpus (1)

• First limits on WIMP nuclear recoil signals in ZEPLIN-II: a two phase xenon detector for dark matter detection

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• Measurements of neutrons produced by high-energy muons at the Boulby Underground Laboratory
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• Neutralino relic density from ILC measurements in the CPV MSSM