LUX collaboration (101 authors)de Viveiros, L.Lindote, A.Lopes, M.I.Neves, F.Silva, C.Solovov, V.N.2019-02-042019-02-042016-04-20http://dx.doi.org/10.1103/PhysRevLett.116.161302http://hdl.handle.net/10400.26/27020We 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 1.4×104  kg day of fiducial exposure allows 90% C.L. upper limits to be set on the WIMP-neutron (WIMP-proton) cross section of σn=9.4×10-41  cm2 (σp=2.9×10-39  cm2) at 33  GeV/c2. The spin-dependent WIMP-neutron limit is the most sensitive constraint to date.engjournal article2019-02-04