论文标题
旋转依赖性的亚GEV非弹性暗物质电子散射和migdal效应：（i）。速度独立操作员
Spin-dependent sub-GeV Inelastic Dark Matter-electron scattering and Migdal effect: (I). Velocity Independent Operator
论文作者
论文摘要
电离信号提供了检测光暗物质的重要途径。在这项工作中，我们考虑了亚GEV非弹性暗物质，并使用非偏好的有效场理论（NR-EFT）来得出对自旋依赖性的DM电子散射和DM-Nucleus migdal散射的约束。由于子GEV DM的后坐力电子光谱对银河系DM速度分布的尾巴敏感，因此我们还比较了Tsallis，经验和标准光环模型中相应散射横截面的边界。使用Xenon1t数据，我们发现放热非弹性DM的DM-Proton/Neutron和DM电子散射横截面的排除限量要比吸热非弹性DM强得多。在三个考虑的DM速度分布中，吸热非弹性DM的每个限制最多都可以通过数量级来差异。
The ionization signal provide an important avenue of detecting light dark matter. In this work, we consider the sub-GeV inelastic dark matter and use the non-relativistic effective field theory (NR-EFT) to derive the constraints on the spin-dependent DM-electron scattering and DM-nucleus Migdal scattering. Since the recoil electron spectrum of sub-GeV DM is sensitive to tails of galactic DM velocity distributions, we also compare the bounds on corresponding scattering cross sections in Tsallis, Empirical and standard halo models. With the XENON1T data, we find that the exclusion limits of the DM-proton/neutron and DM-electron scattering cross sections for exothermic inelastic DM are much stronger that those for the endothermic inelastic DM. Each limits of the endothermic inelastic DM can differ by an order of magnitude at most in three considered DM velocity distributions.
