论文标题
电动但不是折衷的：Xenon1t过量的热遗物深色物质
Electric But Not Eclectic: Thermal Relic Dark Matter for the XENON1T Excess
论文作者
论文摘要
越来越敏感和庞大的地下探测器正在寻求暗物质的身份。最近，Xenon1T合作报告了过多的电子后坐力事件，其中大多数的后坐力能量约为1-30美元。我们表明，通过早期宇宙热冷冻灭绝产生的非弹性暗物质模型可以解释Xenon1t的过量。值得注意的是，这种暗物质模型由一些简单的元素组成：sub-gev质量dirac fermion暗物质与较轻的暗光子光子与标准模型光子混合。在深色U（1）量规对称性下充电的标量场可以为深色光子提供质量，并用一些KeV将Dirac Fermion成分状态质量分解，该质量以相等的丰度生存，并与电子和核心不足道相互作用。
The identity of dark matter is being sought with increasingly sensitive and voluminous underground detectors. Recently the XENON1T collaboration reported excess electronic recoil events, with most of these having recoil energies around $1-30$ keV. We show that a straightforward model of inelastic dark matter produced via early universe thermal freeze-out annihilation can account for the XENON1T excess. Remarkably, this dark matter model consists of a few simple elements: sub-GeV mass Dirac fermion dark matter coupled to a lighter dark photon kinetically mixed with the Standard Model photon. A scalar field charged under the dark U(1) gauge symmetry can provide a mass for the dark photon and splits the Dirac fermion component state masses by a few keV, which survive in equal abundance and interact inelastically with electrons and nuclei.
