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arXiv 2408.13664hep-phastro-ph.CO
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氩和氙中自旋相关的暗物质环级相互作用

Spin-dependent dark matter interactions at loop-level in Ar and Xe

Nassim Bozorgnia, Muping Chen, Graciela B. Gelmini, Alvine C. Kamaha, Yongheng Xu

AI总结:

本文比较氙和氩靶对赝标量中介体暗物质相互作用的探测能力,发现环级自旋无关贡献在氩中可探测且对氙低能区重要,可能改变发现潜力。

摘要:

氙和氩是用于吨级暗物质直接探测实验的两种惰性气体。我们比较了这两种靶元素对由赝标量中介体引起的相互作用的探测能力,包括对截面的环级贡献。在树级,这种相互作用依赖于核自旋,因此在基于氩的探测器中无法探测到,因为氩的自旋为零。然而,在环级,相同的相互作用产生自旋无关的贡献,这些贡献在氩靶中是可探测的,并且相对于氙中的树级相互作用不可忽略,因为后者受到动量抑制。事实上,环级贡献对于低反冲能量下的氙基实验也很重要,这可能会改变它们对这种相互作用的发现潜力。

英文摘要:

Xenon and argon are the two noble gases used in tonne scale dark matter direct detection experiments. We compare the detection capability of both target elements for interactions due to a pseudoscalar mediator including loop-level contributions to the cross section. At tree-level this type of interaction depends on the nuclear spin and would thus not be detectable in argon-based detectors, since Ar has spin zero. However, at the loop-level the same interaction yields spin-independent contributions that would be detectable in an argon target and are not negligible with respect to the tree-level interactions in xenon, because these are momentum suppressed. In fact, the loop-level contributions are also important for xenon-based experiments at low recoil energies, which could change their discovery reach for this interaction.

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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