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arXiv 1802.04294hep-phastro-ph.COhep-exnucl-th
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在当前和未来的类氙直接探测实验中鉴别WIMP-核响应函数

Discriminating WIMP-nucleus response functions in present and future XENON-like direct detection experiments

A. Fieguth, M. Hoferichter, P. Klos, J. Menéndez, A. Schwenk, C. Weinheimer

摘要:

对暗物质的直接探测极限的标准解释涉及到对潜在的WIMP-核相互作用的特定假设,例如,在最简单的情况下,选择一个Helm形状因子,从现象学上描述了一个与自旋无关的同位旋相互作用。一般来说,暗物质与目标核的相互作用可能通过不同的机制进行,这将导致相应的原子核结构因子作为动量传递$q$的函数的不同形状。我们研究在何种程度上不同的WIMP核反应可以区分的基础上的$q$依赖性的结构因子(或“形状因子“)。我们假设一个整体的相互作用强度与目前的自旋无关的限制,并考虑相应的XENON 1 T样,XENONnT样,达尔文样的直接检测实验的曝光。我们发现,只要相互作用的强度不在于太多低于目前的限制,达尔文设置允许一个决定性的歧视许多不同的响应函数的基础上,他们的$q$的依赖性,直接的后果,阐明暗物质的性质。

英文摘要:

The standard interpretation of direct-detection limits on dark matter involves particular assumptions of the underlying WIMP-nucleus interaction, such as, in the simplest case, the choice of a Helm form factor that phenomenologically describes an isoscalar spin-independent interaction. In general, the interaction of dark matter with the target nuclei may well proceed via different mechanisms, which would lead to a different shape of the corresponding nuclear structure factors as a function of the momentum transfer $q$. We study to what extent different WIMP-nucleus responses can be differentiated based on the $q$-dependence of their structure factors (or "form factors"). We assume an overall strength of the interaction consistent with present spin-independent limits and consider an exposure corresponding to XENON1T-like, XENONnT-like, and DARWIN-like direct detection experiments. We find that, as long as the interaction strength does not lie too much below current limits, the DARWIN settings allow a conclusive discrimination of many different response functions based on their $q$-dependence, with immediate consequences for elucidating the nature of dark matter.

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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