论文标题
对Xenon1t多余的暗物质解释的撞机限制
Collider Constraints on a Dark Matter Interpretation of the XENON1T Excess
论文作者
论文摘要
鉴于Xenon1t报告的低能电子后坐力事件的过量，已经提出了许多新的物理场景是过量的起源。一种可能的解释是，多余的结果是快速移动的暗物质（DM），速度$ v \ sim0.05-0.20 $，质量在1 MeV至10 GEV之间，散射出电子。假设快速移动的DM电子相互作用是由矢量粒子介导的，我们会在上述DM电子相互作用上得出对撞机的约束。然后，使用DM电子耦合的边界来限制快速移动DM的可能生产机制。我们发现，矢量介体的首选质量相对较轻（$ \ Lessim $ 1 GEV），并且矢量与电子的耦合远小于与快速移动DM的耦合。
In light of the excess in the low-energy electron recoil events reported by XENON1T, many new physics scenarios have been proposed as a possible origin of the excess. One possible explanation is that the excess is a result of a fast moving dark matter (DM), with velocity $v\sim0.05-0.20$ and mass between 1 MeV and 10 GeV, scattering off an electron. Assuming the fast moving DM-electron interaction is mediated by a vector particle, we derive collider constraints on the said DM-electron interaction. The bounds on DM-electron coupling is then used to constrain possible production mechanisms of the fast moving DM. We find that the preferred mass of the vector mediator is relatively light ($\lesssim$ 1 GeV) and the coupling of the vector to the electron is much smaller than the coupling to the fast moving DM.
