论文标题
重新访问电子目标上的费米神经暗物质吸收
Revisiting the Fermionic Dark Matter Absorption on Electron Target
论文作者
论文摘要
我们对在有效田间理论的背景下对电子靶标的费米子DM吸收相互作用进行了系统的研究。费米子DM的吸收不仅对具有有效的能量释放的子MEV DM敏感，而且还具有独特的特征，在电子后坐力谱中具有明显的峰值，其形状很大程度上由原子效应确定。与Xenon1t和Pandax-II数据拟合分别在$m_χ= 59 $ KEV和105KEV时拟合DM质量，而截止量表则探测到1TEV左右。对早期宇宙中的DM过量生产，对宇宙进化的无形衰减效应以及DM可见衰变的天体物理X（伽马）射线进行了彻底探索，以赋予最新的约束。在张量和伪量表操作员上，其他费米子DM操作员在Tonne级直接检测实验（例如Pandax-4T，Xenonnt和LZ）中特别感兴趣。
We perform a systematic study of the fermionic DM absorption interactions on electron target in the context of effective field theory. The fermionic DM absorption is not just sensitive to sub-MeV DM with efficient energy release, but also gives a unique signature with clear peak in the electron recoil spectrum whose shape is largely determined by the atomic effects. Fitting with the Xenon1T and PandaX-II data prefers DM mass at $m_χ= 59$keV and 105keV, respectively, while the cut-off scale is probed up to around 1TeV. The DM overproduction in the early Universe, the invisible decay effect on the cosmological evolution, and the astrophysical X(gamma)-ray from the DM visible decays are thoroughly explored to give up-to-date constraints. With stringent bounds on the tensor and pseudo-scalar operators, the other fermionic DM operators are of particular interest at tonne-scale direct detection experiments such as PandaX-4T, XENONnT, and LZ.
