Physical Review Letters· 2017Q1
Results from a Search for Dark Matter in the Complete LUX Exposure
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- Q1SCImago
- 2017year
Short summary
The LUX experiment, using a 3.35x10^4 kg day exposure, found no evidence for WIMP dark matter nuclear recoils, excluding spin-independent WIMP-nucleon cross sections above 2.2x10^-46 cm^2 at 50 GeV c^-2 (90% CL).
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Key points
- No evidence of WIMP nuclear recoils was detected in the complete LUX experiment exposure.
- The search achieved a fourfold improvement in sensitivity for high WIMP masses.
- Spin-independent WIMP-nucleon cross sections above 2.2x10^-46 cm^2 are excluded at 50 GeV c^-2 (90% CL).
- Combined LUX data strengthens exclusion to 1.1x10^-46 cm^2 at 50 GeV c^-2.
AI-generated from the title and abstract; the full text is not read.
Abstract
We report constraints on spin-independent weakly interacting massive particle (WIMP)-nucleon scattering using a 3.35×10^{4} kg day exposure of the Large Underground Xenon (LUX) experiment. A dual-phase xenon time projection chamber with 250 kg of active mass is operated at the Sanford Underground Research Facility under Lead, South Dakota (USA). With roughly fourfold improvement in sensitivity for high WIMP masses relative to our previous results, this search yields no evidence of WIMP nuclear recoils. At a WIMP mass of 50 GeV c^{-2}, WIMP-nucleon spin-independent cross sections above 2.2×10^{-46} cm^{2} are excluded at the 90% confidence level. When combined with the previously reported LUX exposure, this exclusion strengthens to 1.1×10^{-46} cm^{2} at 50 GeV c^{-2}.
The authors' abstract, as published at the source. Physical Review Letters, 2017 · DOI ↗
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Field: Nuclear and High Energy Physics
Nuclear and High Energy PhysicsPhysics and Astronomy