论文标题
暗物质和Xenon1t电子后坐力多余
Dark Matter and the XENON1T electron recoil excess
论文作者
论文摘要
我们表明，XENON协作声称的2 keV的电子后坐力可以由DM或类似DM的粒子拟合，其快速组件的速度为$ \ sim 0.1 $。这些颗粒不能成为我们银河系冷的DM光环的一部分，因此我们推测它们的可能性质和起源，例如快速移动的DM亚半途径，DM的半耗时和附近轴心恒星产生的相对论轴。可行的新物理场景必须适应异国情调的DM动力学和异常的DM属性。
We show that the electron recoil excess around 2 keV claimed by the Xenon collaboration can be fitted by DM or DM-like particles having a fast component with velocity of order $\sim 0.1$. Those particles cannot be part of the cold DM halo of our Galaxy, so we speculate about their possible nature and origin, such as fast moving DM sub-haloes, semi-annihilations of DM and relativistic axions produced by a nearby axion star. Feasible new physics scenarios must accommodate exotic DM dynamics and unusual DM properties.
