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Results on the Spin-Dependent Scattering of Weakly Interacting Massive Particles on Nucleons from the Run 3 Data of the LUX Experiment

D. S. Akerib et al. (LUX Collaboration)
Phys. Rev. Lett. 116, 161302 – Published 20 April 2016

Abstract

We present experimental constraints on the spin-dependent WIMP (weakly interacting massive particle)-nucleon elastic cross sections from LUX data acquired in 2013. LUX is a dual-phase xenon time projection chamber operating at the Sanford Underground Research Facility (Lead, South Dakota), which is designed to observe the recoil signature of galactic WIMPs scattering from xenon nuclei. A profile likelihood ratio analysis of 1.4×104kgday of fiducial exposure allows 90% C.L. upper limits to be set on the WIMP-neutron (WIMP-proton) cross section of σn=9.4×1041cm2 (σp=2.9×1039cm2) at 33GeV/c2. The spin-dependent WIMP-neutron limit is the most sensitive constraint to date.

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  • Received 11 February 2016

DOI:https://doi.org/10.1103/PhysRevLett.116.161302

© 2016 American Physical Society

Physics Subject Headings (PhySH)

Particles & FieldsGravitation, Cosmology & Astrophysics

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Improved Limits on Scattering of Weakly Interacting Massive Particles from Reanalysis of 2013 LUX Data

D. S. Akerib et al. (LUX Collaboration)
Phys. Rev. Lett. 116, 161301 (2016)

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Vol. 116, Iss. 16 — 22 April 2016

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