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arXiv 2501.09642hep-phastro-ph.COhep-ex
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散射与吸收在暗物质探测中的交汇

Scattering meets absorption in dark matter detection

Nikhef(荷兰国家核与亚原子物理研究所);University of Amsterdam(阿姆斯特丹大学);Radboud University(拉德堡德大学)

Pieter Braat, Anh Vu Phan, Marieke Postma, Susanne Westhoff

AI总结:

研究暗物质通过轻介子与电子和核子的散射及介子吸收的相互作用,探索未来直接探测实验中暗物质的可行探测目标。

摘要:

直接探测实验开始探索暗物质通过轻介子与电子和核子的散射。质量低于千电子伏的介子在太阳中能被高效产生,并可在同一探测器中被吸收。我们研究了暗物质散射与介子吸收的相互作用,针对两种模型,其中暗 photon 作为介子。对于狄拉克暗物质,我们发现暗物质散射和吸收可以在未来直接探测实验中同时被观测到。对于原子暗物质,我们预测由于散射的暗原子及其离子化组成部分,会出现额外信号。在两种模型中,我们确定了符合宇宙学和天体物理学限制的参数空间,其中最强的限制来自暗物质自相互作用。通过这种方式,我们确定了未来直接探测实验中使用轻介子暗物质的可行目标。区分各种信号,例如通过测量能量分布,将是揭示潜在模型的关键,特别是在发现的情况下。

英文摘要:

Direct detection experiments have started to explore dark matter scattering off electrons and nucleons through light mediators. Mediators with sub-keV masses are efficiently produced in the Sun and can be absorbed in the same detectors that probe dark matter scattering. We investigate the interplay of dark matter scattering and mediator absorption for two models with a dark photon as mediator. For Dirac dark matter, we find that scattering and absorption can be simultaneously observed at direct detection experiments in the near future. For atomic dark matter, we predict additional signals due to scattering of both dark atoms and constituents from ionized dark atoms. In both models, we determine the parameter space that respects bounds from cosmology and astrophysics, where the strongest constraints come from dark matter self-interactions. In this way, we identify viable targets for dark matter with light mediators at upcoming direct detection experiments. Distinguishing between the various signals, for instance by measuring energy distributions, will be crucial to reveal the underlying model in case of a discovery.

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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