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在MUonE实验中发现暗物质

Gordan Krnjaic^1,2,3, Duncan Rocha^1,4, Isaac R Wang¹

¹Fermi National Accelerator Laboratory, Theoretical Physics Division, Batavia, Illinois, USA.

Physical review letters

|May 9, 2025

概括

MUonE实验可以通过分析电子散射来发现热遗留暗物质. 这个搜索利用实验的设置来检测特定的暗物质粒子衰变.

科学领域:

粒子物理学粒子物理学
宇宙学的宇宙学是什么?
暗物质研究暗物质研究

背景情况:

MUonE实验旨在对电子散射进行高精度测量,以确定子异常磁矩.
现有的实验设置可能为发现超越标准模型的新物理提供机会,例如暗物质.

研究的目的:

为了证明MUonE实验能够使用其标准配置检测热遗迹暗物质的能力.
在MUonE实验框架内探索一个新的子-GeV暗物质候选者的搜索策略.

主要方法:

在MUonE目标中利用原子核散射,产生一对伪迪拉克子.
分析了较重的伪迪拉克状态的半可见衰变,将其转化为下游检测到的流离失所的迪莱普顿对.
使用下游电子热量计在暗物质搜索中进行关键的背景排斥.

主要成果:

据证明,MUonE实验的名义设置对特定的热遗迹暗物质模型敏感.
搜索策略可以探测低于GeV的暗物质粒子,其属性与MUonE信号参数有关.
下游电子热量计被认为对背景抑制至关重要,提高了搜索灵敏度.

结论:

MUonE实验为发现热遗迹暗物质提供了一个独特的机会.
实验设计,特别是下游电子热量计,非常适合这次暗物质搜索.
这种双重用途的能力加强了MUonE实验拟议的配置的科学案例.

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