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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

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arxiv 1602.03489 v3 pith:FBOMMLQS submitted 2016-02-10 hep-ex hep-ph

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

LUX Collaboration: D. S. Akerib , H. M. Ara\'ujo , X. Bai , A. J. Bailey , J. Balajthy , P. Beltrame , E. P. Bernard , A. Bernstein
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T. P. Biesiadzinski E. M. Boulton A. Bradley R. Bramante S. B. Cahn M. C. Carmona-Benitez C. Chan J. J. Chapman A. A. Chiller C. Chiller A. Currie J. E. Cutter T. J. R. Davison L. de Viveiros A. Dobi J. E. Y. Dobson E. Druszkiewicz B. N. Edwards C. H. Faham S. Fiorucci R. J. Gaitskell V. M. Gehman C. Ghag K. R. Gibson M. G. D. Gilchriese C. R. Hall M. Hanhardt S. J. Haselschwardt S. A. Hertel D. P. Hogan M. Horn D. Q. Huang C. M. Ignarra M. Ihm R. G. Jacobsen W. Ji K. Kazkaz D. Khaitan R. Knoche N. A. Larsen C. Lee B. G. Lenardo K. T. Lesko A. Lindote M. I. Lopes D. C. Malling A. Manalaysay R. L. Mannino M. F. Marzioni D. N. McKinsey D. M. Mei J. Mock M. Moongweluwan J. A. Morad A. St. J. Murphy C. Nehrkorn H. N. Nelson F. Neves K. O'Sullivan K. C. Oliver-Mallory R. A. Ott K. J. Palladino M. Pangilinan E. K. Pease P. Phelps L. Reichhart C. Rhyne S. Shaw T. A. Shutt C. Silva V. N. Solovov P. Sorensen S. Stephenson T. J. Sumner M. Szydagis D. J. Taylor W. Taylor B. P. Tennyson P. A. Terman D. R. Tiedt W. H. To M. Tripathi L. Tvrznikova S. Uvarov J. R. Verbus R. C. Webb J. T. White T. J. Whitis M. S. Witherell F. L. H. Wolfs K. Yazdani S. K. Young C. Zhang
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classification hep-ex hep-ph
keywords textspin-dependenttimescrossdatascatteringsigmawimp-neutron
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We present the first experimental constraints on the spin-dependent WIMP-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 $1.4~\times~10^{4}~\text{kg}\cdot~\text{days}$ of fiducial exposure allows 90% CL upper limits to be set on the WIMP-neutron (WIMP-proton) cross section of $\sigma_n~=~9.4~\times~10^{-41}~\text{cm}^2$ ($\sigma_p~=~2.9~\times~10^{-39}~\text{cm}^2$) at 33 GeV/c$^2$. The spin-dependent WIMP-neutron limit is the most sensitive constraint to date.

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