论文标题
宇宙射线中的方位角不对称增强了暗物质通量
Azimuthal asymmetry in cosmic-ray boosted dark matter flux
论文作者
论文摘要
通过高能宇宙射线（称为CRDM）向上散落的轻晕暗物质（DM）颗粒可以充满活力，并在常规的DM和中微子实验中被检测到。我们表明，CRDM通量具有新颖且可检测到的形态特征。与大多数最近提出的增强的DM（BDM）模型不同，该模型预测了银河系中心周围的方位角对称DM通量，CRDM通量会显着打破方位角对称性。根据CRDM通量的形态，使用整个星系中的宇宙射线电子分布和天空中优化的搜索区域，我们得出了迄今为止对DM电子散射横截面上最严格的约束，从Super-Kamiokande（SK）IV数据中得出了从SK-IV Full-Sky数据中改善Magn order sorde cormente super-kamiokande（SK）IV数据。基于改进的约束，我们预测在$ \ sim3σ$级别的未来Hyper-Kamiokande实验中可以观察到方位角对称性效应。
Light halo dark matter (DM) particles up-scattered by high-energy cosmic rays (referred to as CRDM) can be energetic and become detectable at conventional DM and neutrino experiments. We show that the CRDM flux has a novel and detectable morphological feature. Unlike most of the recently proposed boosted DM (BDM) models which predict azimuthally symmetric DM fluxes around the Galactic Center, the CRDM flux breaks the azimuthal symmetry significantly. Using cosmic-ray electron distribution in the whole Galaxy and optimized search region in the sky according to the morphology of the CRDM flux, we derive so far the most stringent constraints on the DM-electron scattering cross section from the Super-Kamiokande (SK) IV data, which improves the previous constraints from the SK-IV full-sky data by more than an order of magnitude. Based on the improved constraints, we predict that the azimuthal symmetry-breaking effect can be observed in the future Hyper-Kamiokande experiment at $\sim 3σ$ level.
