Limits on spin-dependent WIMP-nucleon cross-sections from the XENON10 experiment

Details Limits on spin-dependent WIMP-nucleon cross-sections from the XENON10 experiment Limits on spin-dependent WIMP-nucleon cross-sections from the XENON10 experiment

2008-05-19

arxiv.org/abs/0805.2939v2

Phys.Rev.Lett.101:091301,2008

Astronomy and Astrophysics

Astrophysics

4 pages, 4 figures; final version published in PRL (added DAMA region to Figure 1)

Scientific paper

10.1103/PhysRevLett.101.091301

XENON10 is an experiment to directly detect weakly interacting massive particle (WIMPs), which may comprise the bulk of the non-baryonic dark matter in our Universe. We report new results for spin-dependent WIMP-nucleon interactions with 129-Xe and 131-Xe from 58.6 live-days of operation at the Laboratori Nazionali del Gran Sasso (LNGS). Based on the non-observation of a WIMP signal in 5.4 kg of fiducial liquid xenon mass, we exclude previously unexplored regions in the theoretically allowed parameter space for neutralinos. We also exclude a heavy Majorana neutrino with a mass in the range of 10 GeV -2 TeV as a dark matter candidate under standard assumptions for its density and distribution in the galactic halo.

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