论文标题
暗物质的依赖性 - 电子散射对银河系暗物质速度分布
Dependence of Dark Matter - Electron Scattering on the Galactic Dark Matter Velocity Distribution
论文作者
论文摘要
暗物质电子散射的速率取决于暗物质光环的基本速度分布。重要的是，暗物质电子散射对高速尾部特别敏感，这在各种暗物质光环模型之间显着不同。在这项工作中，我们总结了领先的光环模型，并讨论输入它们的各种参数。我们根据最近的研究和测量建议为这些参数提供最新值。此外，我们量化了暗物质电子散射率对光晕模型和参数的选择的依赖性，并证明了这些选择如何传播到预测的横截面极限。该速率对圆速度V0的变化最敏感；在硅目标中，我们发现速率预测的变化范围从O（0.01％）到O（100％）的接触相互作用，而O（10％）到O（100％）到远程相互作用的O（100％）。
The rate of dark matter-electron scattering depends on the underlying velocity distribution of the dark matter halo. Importantly, dark matter-electron scattering is particularly sensitive to the high-velocity tail, which differs significantly amongst the various dark matter halo models. In this work, we summarize the leading halo models and discuss the various parameters which enter them. We recommend updated values for these parameters based on recent studies and measurements. Furthermore, we quantify the dependence of the dark matter-electron scattering rate on the choice of halo model and parameters, and demonstrate how these choices propagate to the predicted cross-section limits. The rate is most sensitive to changes in the circular velocity v0; in silicon targets, we find that the changes in the rate predictions can range from O(0.01%) to O(100%) for contact interactions and O(10%) to O(100%) for long-range interactions.
