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

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          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.

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          Review of mathematics, numerical factors, and corrections for dark matter experiments based on elastic nuclear recoil

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            A New Model-Independent Method for Extracting Spin-Dependent Cross Section Limits from Dark Matter Searches

            A new method is proposed for extracting limits on spin-dependent WIMP-nucleon interaction cross sections from direct detection dark matter experiments. The new method has the advantage that the limits on individual WIMP-proton and WIMP-neutron cross sections for a given WIMP mass can be combined in a simple way to give a model-independent limit on the properties of WIMPs scattering from both protons and neutrons in the target nucleus. Extension of the technique to the case of a target material consisting of several different species of nuclei is discussed.
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              Simulation studies of neutron shielding, calibration and veto systems for gaseous dark matter detectors

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                Author and article information

                Journal
                14 August 2007
                Article
                10.1016/j.physletb.2007.08.030
                0708.1883
                Custom metadata
                Phys.Lett.B653:161-166,2007
                12 pages, 2 figures, to be published in Physics Letters B
                astro-ph

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