Search for new physics in low-energy electron recoils from the first LZ exposure
Search for new physics in low-energy electron recoils from the first LZ exposure
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从第一次 LZ 暴露中寻找低能电子反冲的新物理
DOI：
10.1103/physrevd.108.072006
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发表时间：
2023
影响因子：
5
通讯作者：
Aalbers J
中科院分区：
文献类型：
--
作者：
Aalbers J
LUX-ZEPLIN（LZ）实验是一个以双相氙时间投影室为中心的暗物质探测器。我们报告搜索新的物理出现通过几个千电子伏规模的电子反冲，使用实验的第一次曝光60天的生活和5.5吨的基准质量。这些数据被发现是符合一个背景的假设，并限制了新的物理模型，包括太阳轴子电子耦合，太阳中微子磁矩和毫荷，电子耦合到银河系轴子粒子和隐藏的光子。类似的限制也设置在弱相互作用大质量粒子（WIMP）暗物质上，这些暗物质通过米格达尔效应的电离原子态产生信号。
The LUX-ZEPLIN (LZ) experiment is a dark matter detector centered on a dual-phase xenon time projection chamber. We report searches for new physics appearing through few-keV-scale electron recoils, using the experiment’s first exposure of 60 live days and a fiducial mass of 5.5 t. The data are found to be consistent with a background-only hypothesis, and limits are set on models for new physics including solar axion electron coupling, solar neutrino magnetic moment and millicharge, and electron couplings to galactic axionlike particles and hidden photons. Similar limits are set on weakly interacting massive particle (WIMP) dark matter producing signals through ionized atomic states from the Migdal effect.