The XENON collaboration recently reported an excess of electron recoil events in the low energy region with a significance of around $3.3\sigma$. An explanation of this excess in terms of thermal dark matter seems challenging. We propose a scenario where dark matter in the Milky Way halo gets boosted as a result of scattering with the diffuse supernova neutrino background. This interaction can accelerate the dark-matter to semi-relativistic velocities, and this flux, in turn, can scatter with the electrons in the detector, thereby providing a much better fit to the data. We identify regions in the parameter space of dark-matter mass and interaction cross section which satisfy the excess. Furthermore, considering the data only hypothesis, we also impose bounds on the dark-matter scattering cross section, which are competitive with bounds from other experiments.

中文翻译：

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来自漫射超新星中微子的增强暗物质

XENON 合作最近报告了在低能量区域中过量的电子反冲事件，其重要性约为 $3.3\sigma$. 从热暗物质的角度解释这种过剩似乎具有挑战性。我们提出了一个场景，其中银河系晕中的暗物质由于漫射超新星中微子背景的散射而得到增强。这种相互作用可以将暗物质加速到半相对论速度，而这种通量又可以与探测器中的电子一起散射，从而提供更好的数据拟合。我们在暗物质质量和相互作用截面的参数空间中识别满足过剩的区域。此外，考虑到仅数据假设，我们还对暗物质散射截面施加了界限，这与其他实验的界限具有竞争​​力。