Results on the Spin-Dependent Scattering of Weakly Interacting Massive Particles on Nucleons from the Run 3 Data of the LUX Experiment
Results on the Spin-Dependent Scattering of Weakly Interacting Massive Particles on Nucleons from the Run 3 Data of the LUX Experiment
复制标题
DOI：
10.1103/physrevlett.116.161302
复制
发表时间：
2016-04-20
影响因子：
8.6
通讯作者：
Zhang, C.
中科院分区：
文献类型：
--
作者：
Akerib, D. S.;Araujo, H. M.;Zhang, C.
我们提出了2013年获得的LUX数据中自旋相关的WIMP（弱相互作用大质量粒子）核子弹性截面的实验约束。LUX是一个双相氙时间投影室，运行在桑福德地下研究设施（铅，南达科他州），其目的是观察从氙核散射的星系WIMP的反冲签名。1.4 x 10（4）kg/天基准暴露的轮廓似然比分析允许90%的C。L.在33 GeV/c（2）时，WIMP中子（WIMP-质子）截面的上限为σ（n）= 9.4 x 10（-41）cm（2）（σ（p）= 2.9 x 10（-39）cm（2））。自旋相关的WIMP中子限制是迄今为止最敏感的约束。
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 x 10(4) kg day of fiducial exposure allows 90% C. L. upper limits to be set on the WIMPneutron (WIMP-proton) cross section of sigma(n) = 9.4 x 10(-41) cm(2) (sigma(p) = 2.9 x 10(-39) cm(2)) at 33 GeV/c(2). The spin-dependent WIMP-neutron limit is the most sensitive constraint to date.