Limits on Spin-Dependent WIMP-Nucleon Cross Sections from the XENON10 Experiment
- Department of Physics, University of Florida, Gainesville, Florida 32611 (United States)
- Department of Physics, Columbia University, New York, New York 10027 (United States)
- INFN-Laboratori Nazionali del Gran Sasso, Assergi, 67100 (Italy)
- Physics Institute, University of Zuerich, Zuerich, CH-8057 (Switzerland)
- Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550 (United States)
- Department of Physics, Case Western Reserve University, Cleveland, Ohio 44106 (United States)
- Department of Physics, University of Coimbra, Coimbra 3004-516 (Portugal)
XENON10 is an experiment to directly detect weakly interacting massive particles (WIMPs), which may comprise the bulk of the nonbaryonic dark matter in our Universe. We report new results for spin-dependent WIMP-nucleon interactions with {sup 129}Xe and {sup 131}Xe from 58.6 live days of operation at the Laboratori Nazionali del Gran Sasso. Based on the nonobservation 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 {approx}10 GeV/c{sup 2}-2 TeV/c{sup 2} as a dark matter candidate under standard assumptions for its density and distribution in the galactic halo.
- OSTI ID:
- 21134169
- Journal Information:
- Physical Review Letters, Vol. 101, Issue 9; Other Information: DOI: 10.1103/PhysRevLett.101.091301; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA). XENON10 Collaboration; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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