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

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...

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Veröffentlicht in:	Physical review letters 2016-04, Vol.116 (16), p.161302-161302, Article 161302
Hauptverfasser:	Akerib, D S, Araújo, H M, Bai, X, Bailey, A J, Balajthy, J, Beltrame, P, Bernard, E P, Bernstein, A, Biesiadzinski, T P, Boulton, E M, Bradley, A, Bramante, R, Cahn, S B, Carmona-Benitez, M C, Chan, C, Chapman, J J, Chiller, A A, Chiller, C, Currie, A, Cutter, J E, Davison, T J R, de Viveiros, L, Dobi, A, Dobson, J E Y, Druszkiewicz, E, Edwards, B N, Faham, C H, Fiorucci, S, Gaitskell, R J, Gehman, V M, Ghag, C, Gibson, K R, Gilchriese, M G D, Hall, C R, Hanhardt, M, Haselschwardt, S J, Hertel, S A, Hogan, D P, Horn, M, Huang, D Q, Ignarra, C M, Ihm, M, Jacobsen, R G, Ji, W, Kazkaz, K, Khaitan, D, Knoche, R, Larsen, N A, Lee, C, Lenardo, B G, Lesko, K T, Lindote, A, Lopes, M I, Malling, D C, Manalaysay, A, Mannino, R L, Marzioni, M F, McKinsey, D N, Mei, D-M, Mock, J, Moongweluwan, M, Morad, J A, Murphy, A St J, Nehrkorn, C, Nelson, H N, Neves, F, O'Sullivan, K, Oliver-Mallory, K C, Ott, R A, Palladino, K J, Pangilinan, M, Pease, E K, Phelps, P, Reichhart, L, Rhyne, C, Shaw, S, Shutt, T A, Silva, C, Solovov, V N, Sorensen, P, Stephenson, S, Sumner, T J, Szydagis, M, Taylor, D J, Taylor, W, Tennyson, B P, Terman, P A, Tiedt, D R, To, W H, Tripathi, M, Tvrznikova, L, Uvarov, S, Verbus, J R, Webb, R C, White, J T, Whitis, T J, Witherell, M S, Wolfs, F L H, Yazdani, K, Young, S K
Format:	Artikel
Sprache:	eng
Schlagworte:	ASTRONOMY AND ASTROPHYSICS Cross sections dark matter detectors Likelihood ratio Nucleons particle dark matter PHYSICS OF ELEMENTARY PARTICLES AND FIELDS Radiation counters Scattering Signatures time-projection chambers Weakly interacting massive particles Xenon
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Zusammenfassung:	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 1.4×10^{4} kg day of fiducial exposure allows 90% C.L. upper limits to be set on the WIMP-neutron (WIMP-proton) cross section of σ_{n}=9.4×10^{-41} cm^{2} (σ_{p}=2.9×10^{-39} cm^{2}) at 33 GeV/c^{2}. The spin-dependent WIMP-neutron limit is the most sensitive constraint to date.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.116.161302