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arXiv 2411.04435hep-phastro-ph.COastro-ph.EPastro-ph.IMhep-ex
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利用木星扩展水切伦科夫探测器的暗物质探测范围

Extending the Dark Matter Reach of Water Cherenkov Detectors using Jupiter

Sandra Robles, Stephan A. Meighen-Berger

AI总结:

提出利用木星作为捕获目标,使水切伦科夫探测器能约束太阳蒸发质量以下的 GeV 尺度暗物质,预测 Hyper-K 等实验的灵敏度可超越现有直接探测与太阳限制。

摘要:

我们提出首个利用水切伦科夫探测器来约束太阳蒸发质量以下的 GeV 尺度暗物质(DM)的方法。尽管以往研究强调太阳和地球作为 DM 捕获目标,我们证明木星是一个可行的目标。木星的独特性质,如较低的内核温度和显著的引力势,使其能比太阳更有效地捕获和保留轻 DM,特别是在直接探测灵敏度降低的 4 GeV 以下质量范围。我们的计算提供了木星内 GeV 尺度湮灭 DM 的首份灵敏度估计,预测 Hyper-K 对 2 GeV 以下 DM 质量可达低至 $σ_{pχ}^{\mathrm{SD}}=2\times 10^{-35}\mathrm{cm}^2$ 的自旋依赖截面。这超越了当前的太阳限制和直接探测结果。我们还提供了 Super-K ORCA 和 IceCube-Upgrade 的估计,表明这些实验可为直接探测实验提供互补的界限。

英文摘要:

We propose the first method for water Cherenkov detectors to constrain GeV-scale dark matter (DM) below the solar evaporation mass. While previous efforts have highlighted the Sun and Earth as DM capture targets, we demonstrate that Jupiter is a viable target. Jupiter's unique characteristics, such as its lower core temperature and significant gravitational potential, allow it to capture and retain light DM more effectively than the Sun, particularly in the mass range below 4 GeV where direct detection sensitivity diminishes. Our calculations provide the first sensitivity estimates to GeV-scale annihilating DM within Jupiter, predicting Hyper-K can reach spin dependent cross sections as low as $σ_{pχ}^{\mathrm{SD}}=2\times 10^{-35}\mathrm{cm}^2$ for DM masses below 2 GeV. This surpasses current solar limits and direct detection results. We additionally provide estimates for Super-K ORCA, and the IceCube-Upgrade, showing that these experiments could provide complimentary bounds to direct detection experiments.

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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