Constraining the Spin-Dependent WIMP-Nucleon Cross Sections with XENON1T
Constraining the Spin-Dependent WIMP-Nucleon Cross Sections with XENON1T
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DOI：
10.1103/physrevlett.122.141301
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发表时间：
2019-04-08
影响因子：
8.6
通讯作者：
Zopounidis, J. P.
中科院分区：
文献类型：
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作者：
Aprile, E.;Aalbers, J.;Zopounidis, J. P.
我们报告了XENON1T暗物质搜索实验中自旋依赖弹性弱相互作用大质量粒子（WIMP）核子散射的第一个实验结果。分析使用XENON1T的全吨年暴露来约束自旋依赖的纯质子和纯中子情况。没有观察到明显的信号过剩，并使用轮廓似然比分析来设置wimp -核子相互作用的排除限制。这包括迄今为止对wimp -中子横截面的最严格约束，在30 GeV/c(2)和90%的置信水平下，最小为6.3 x 10(-42) cm(2)。将结果与对撞机搜索结果进行比较，并用于排除具有轴矢量介质的等标量理论中的新参数空间。
We report the first experimental results on spin-dependent elastic weakly interacting massive particle (WIMP) nucleon scattering from the XENON1T dark matter search experiment. The analysis uses the full ton year exposure of XENON1T to constrain the spin-dependent proton-only and neutron-only cases. No significant signal excess is observed, and a profile likelihood ratio analysis is used to set exclusion limits on the WIMP-nucleon interactions. This includes the most stringent constraint to date on the WIMP-neutron cross section, with a minimum of 6.3 x 10(-42) cm(2) at 30 GeV/c(2) and 90% confidence level. The results are compared with those from collider searches and used to exclude new parameter space in an isoscalar theory with an axial-vector mediator.