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arXiv 2204.06458hep-phastro-ph.HEhep-ex
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弹性WIMP-核散射信号的正向和反向年调制

Normal and Reverse Annual Modulations of Elastic WIMP-Nucleus Scattering Signals

Chung-Lin Shan

摘要:

在我们早期关于银河系WIMP(不仅撞击我们的探测器,而且)散射离开目标核的三维有效速度分布的工作之后,在本文中,我们证明了在直接暗物质探测实验中可以观察到的弹性WIMP-核散射信号的正向和“反向”年度调制。我们的模拟表明,一旦WIMP质量轻到只有几十GeV,事件数和累积的反冲能量的WIMP诱导的散射事件的轻和重的目标核确实将是最大(最小)在夏季(冬季)。然而,一旦WIMP质量重到几百GeV,事件数和WIMP散射事件的累积反冲能量在夏季将相反地是最小的。可以理解的是,对于中等质量的WIMP,事件数和一些中等质量核的散射事件的累积反冲能量将显示出近似均匀的时间依赖性。

英文摘要:

Following our earlier work on the 3-dimensional effective velocity distribution of Galactic WIMPs (not only impinging on our detectors but also) scattering off target nuclei, in this paper, we demonstrate the normal and a "reverse" annual modulations of elastic WIMP-nucleus scattering signals, which could be observed in direct Dark Matter detection experiments. Our simulations show that, once the WIMP mass is as light as only a few tens GeV, the event number and the accumulated recoil energy of WIMP-induced scattering events off both of light and heavy target nuclei would indeed be maximal (minimal) in summer (winter). However, once the WIMP mass is as heavy as a few hundreds GeV, the event number and the accumulated recoil energy of WIMP scattering events off heavy nuclei would inversely be minimal in summer. Understandably, for an intermediate WIMP mass, the event number and the accumulated recoil energy of scattering events off some middle-mass nuclei would show an approximately uniform time dependence.

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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