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arXiv 2007.03662hep-phhep-ex
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起伏的暗物质

Undulating Dark Matter

Joe Davighi, Matthew McCullough, Joseph Tooby-Smith

摘要:

我们认为,微观和宏观物理之间的相互作用可以产生暗物质(DM),其与可见光部分的相互作用基本上在时间上波动,独立于天体动力学。一个具体的例子是费米DM与电偶极矩(EDM)源的振荡类轴子场,导致在散射率的波动。光DM搜索的发现潜力可以通过另外搜索起伏的散射率来增强,特别是在背景率大且难以估计的检测区域中,诸如对于DM电子散射占主导地位的单个电子箱中的1 MeV附近的DM质量。波动的信号也可以在发现后揭示宝贵的暗区信息。在这方面,我们强调,如果最近的XENON1T过量的事件是由于光DM散射电子,未来的时间依赖性的事件的分析可以提供线索的微观起源的假定信号。

英文摘要:

We suggest that an interplay between microscopic and macroscopic physics can give rise to dark matter (DM) whose interactions with the visible sector fundamentally undulate in time, independent of celestial dynamics. A concrete example is provided by fermionic DM with an electric dipole moment (EDM) sourced by an oscillating axion-like field, resulting in undulations in the scattering rate. The discovery potential of light DM searches can be enhanced by additionally searching for undulating scattering rates, especially in detection regions where background rates are large and difficult to estimate, such as for DM masses in the vicinity of 1 MeV where DM-electron scattering dominantly populates the single electron bin. An undulating signal could also reveal precious dark sector information after discovery. In this regard we emphasise that, if the recent XENON1T excess of events is due to light DM scattering exothermically off electrons, future analyses of the time-dependence of events could offer clues as to the microscopic origins of the putative signal.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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