WIMP Dark Matter Searches with the LUX-ZEPLIN Experiment

该项目将集中使用来自美国南达科他州SURF的LUX-ZEPLIN实验的数据，以寻找构成银河系暗物质的弱相互作用大质量粒子（WIMP）。该项目将侧重于三个方面：（1）使用多重散射（MS）事件来评估不可约中子诱发的核反冲背景对WIMP信号的量值，（2）使用从d-d中子源校准获得的MS事件来测量来自核反冲事件的液体氙中的电荷产额，（3）在最终的PLR统计分析中使用SS和MS控制区来约束电子和核反冲背景，并通过轮廓似然构造来并入相关背景模型系统学。

This project will focus on using data from the LUX-ZEPLIN experiment at SURF in South Dakota, USA, to search for weakly interacting massive particles (WIMPs) constituting the dark matter in our galaxy. The project will focus on three aspects: (1) the use of multiple-scatter (MS) events to assess the magnitude of irreducible neutron-induced nuclear recoil backgrounds to a WIMP signal, (2) the use of MS events obtained from d-d neutron source calibrations to measure the charge yield in liquid xenon from nuclear recoil events, (3) the use of SS and MS control regions to constrain electron and nuclear recoil backgrounds in the final PLR statistical analysis, and the incorporation of related background model systematics via the profile likelihood construction.