论文标题
通过背景电子抗神经通量数据约束暗物质核子散射横截面
Constraining dark matter-nucleon scattering cross section by the background electron anti-neutrino flux data
论文作者
论文摘要
诸如恒星和行星之类的天体可能能够通过暗物质 - 核子散射捕获大量的暗物质颗粒。许多先前的研究都将不同的天体物体（例如太阳和地球）视为天然暗物质探测器，并获得了暗物质 - 核子散射横截面的某些严格界限。在这项研究中，我们使用Super-Kamiokande实验获得的$ \ sim 10 $ MEV电子中微子通量极限，并将地球视为大型自然暗物质检测器来限制暗物质 - 核子散射横截面。我们证明此方法通常可以获得更严格的限制。对于某些通过$ b \ bar {b} $通道歼灭的暗物质质量范围，与Isospin无关散射和仅质子散射的横截面的极限可能比在PICO Direct Direct-dection-detection实验中获得的范围更为严格。
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.
