LUX实验Run 3数据中弱相互作用大质量粒子与核子的自旋相关散射结果。
Results on the Spin-Dependent Scattering of Weakly Interacting Massive Particles on Nucleons from the Run 3 Data of the LUX Experiment.
作者信息
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, Zhang C
机构信息
Case Western Reserve University, Department of Physics, 10900 Euclid Ave, Cleveland, Ohio 44106, USA.
SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94205, USA.
出版信息
Phys Rev Lett. 2016 Apr 22;116(16):161302. doi: 10.1103/PhysRevLett.116.161302. Epub 2016 Apr 20.
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.
我们给出了基于2013年LUX实验数据得到的关于与自旋相关的弱相互作用大质量粒子（WIMP）-核子弹性截面的实验限制。LUX是一个双相氙时间投影室，位于桑福德地下研究设施（南达科他州利德市），旨在观测银河系中WIMP与氙核散射产生的反冲信号。对1.4×10⁴千克·天的基准曝光进行轮廓似然比分析，得到了在33 GeV/c²时WIMP-中子（WIMP-质子）截面σₙ = 9.4×10⁻⁴¹平方厘米（σₚ = 2.9×10⁻³⁹平方厘米）的90%置信水平上限。与自旋相关的WIMP-中子限制是迄今为止最灵敏的限制。
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