论文标题
Xenon1t闪耀暗物质
Shining dark matter in Xenon1T
论文作者
论文摘要
我们指出，非相关的$ \ sim 2 $ GEV暗物质（DM）通过更高维度的雷利操作员与可见物质相互作用可以解释Xenon1t协作最近观察到的“电子后坐力”事件的过剩。 DM散射事件会导致几个KEV光子，该光子平均携带大部分沉积能，而核后坐力能量仅是跨校正的校正。由于Xenon1t检测器不会区分电子和光子，因此将这些事件解释为过量的KeV电子。对于$ {\ Mathcal O}的光中介器（10〜 {\ rm mev}）$，与暗物质的介导器相关的光介质可以避免从暗物质歼灭中进行间接约束。一个环诱导的暗物质中诱导的自旋非依赖性散射可能很快导致确认信号，或者已经排除了雷利DM模型的可行参数空间区域，具体取决于未知的非驾驶核矩阵元素的确切值是什么。
We point out that a non-relativistic $\sim 2 $ GeV dark matter (DM) which interacts with visible matter through higher dimensional Rayleigh operators could explain the excess of "electron recoil" events recently observed by the Xenon1T collaboration. A DM scattering event results in a few keV photon that on average carries most of the deposited energy, while the nuclear recoil energy is only a subleading correction. Since the Xenon1T detector does not discriminate between electrons and photons, such events would be interpreted as excess of the keV electrons. Indirect constraints from dark matter annihilation are avoided for light mediators of ${\mathcal O}(10~{\rm MeV})$ that have sizable couplings to neutrinos. One loop induced spin-independent scattering in dark matter may soon lead to a confirmation signal or already excludes regions of viable parameter space for the Rayleigh DM model, depending on what the exact values of the unknown nonperturbative nuclear matrix elements are.
