The LZ Dark Matter Experiment

LZ 暗物质实验

• 批准号: 2726716
• 金额: --
• 依托单位: University College London
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2726716
• 关键词: LZ; Dark; Matter; Experiment

The existence of dark matter is now supported by a wide range of physical observations, ranging from galactic to cosmological scales. Our best cosmological models predict dark matter to make up 85% of the matter-content of the universe. One of the leading particle candidates that can effectively explain cosmological observations is the Weakly Interacting Massive Particles (WIMPS), the presence of which can be directly searched for by rare-event underground experiments via its scattering off atomic nuclei. The 7 tonne dual-phase liquid xenon based LUX-ZEPLIN (LZ) experiment operates in the Davis Campus at the Sanford Underground Research Facility (South Dakota, USA), with world-leading sensitivity to WIMPs above 9 GeV following first science results in July 2022, from a fraction of LZ'S planned 1000 day exposure. This project will focus on data analysis from LZ's science runs, towards discovery of new physics.

暗物质的存在现在得到了从银河尺度到宇宙尺度的广泛物理观测的支持。我们最好的宇宙学模型预测暗物质占宇宙物质含量的 85%。能够有效解释宇宙学观测的主要候选粒子之一是弱相互作用大质量粒子（WIMPS），通过其原子核的散射，可以通过罕见的地下实验直接寻找其存在。基于 7 吨双相液氙的 LUX-ZEPLIN (LZ) 实验在桑福德地下研究设施（美国南达科他州）的戴维斯园区进行，继 2022 年 7 月首次科学结果（LZ 计划 1000 天暴露的一小部分）后，该实验对 9 GeV 以上的 WIMP 具有世界领先的灵敏度。该项目将重点关注 LZ 科学运行的数据分析，以发现新的物理现象。