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arXiv 2201.02315hep-phastro-ph.EPastro-ph.HE
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用背景电子反中微子通量数据约束暗物质-核子散射截面

Constraining dark matter-nucleon scattering cross section by the background electron anti-neutrino flux data

Man Ho Chan, Chak Man Lee

摘要:

恒星和行星等天体可能能够通过暗物质-核子散射捕获大量的暗物质粒子。以往的许多研究都将太阳和地球等不同的天体作为天然的暗物质探测器,并得到了暗物质-核子散射截面的一些严格界限。在这项研究中,我们使用由超级神冈实验获得的$\sim 10$ MeV电子中微子通量极限,并考虑地球作为一个大的天然暗物质探测器来约束暗物质-核子散射截面。我们表明,这种方法通常可以得到更严格的限制。对于一定范围内的暗物质质量湮灭通过$b\bar{b}$通道,截面的极限的同位旋无关的散射和质子唯一的散射可以得到更严格的比在PICO直接检测实验。

英文摘要:

Celestial objects such as stars and planets might be able to capture a large amount of dark matter particles through dark matter-nucleon scattering. Many previous studies have considered different celestial objects such as the Sun and the Earth as natural dark matter detectors and obtained some stringent bounds of the dark matter-nucleon scattering cross section. In this study, we use the $\sim 10$ MeV electron neutrino flux limits obtained by the Super-Kamiokande experiment and consider the Earth as a large natural dark matter detector to constrain the dark matter-nucleon scattering cross section. We show that this method can generally get more stringent limits. For certain ranges of dark matter mass annihilating via the $b\bar{b}$ channel, the limits of cross section for the isospin-independent scattering and proton-only scattering could be more stringent than that obtained in the PICO direct-detection experiment.

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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