Title: How blind are underground and surface detectors to strongly interacting Dark Matter? Show Chinese title

Title: 地下和地表探测器对强相互作用暗物质的探测盲区有多大？

Abstract: Above a critical dark matter-nucleus scattering cross section any terrestrial direct detection experiment loses sensitivity to dark matter, since the Earth crust, atmosphere, and potential shielding layers start to block off the dark matter particles. This critical cross section is commonly determined by describing the average energy loss of the dark matter particles analytically. However, this treatment overestimates the stopping power of the Earth crust. Therefore the obtained bounds should be considered as conservative. We perform Monte Carlo simulations to determine the precise value of the critical cross section for various direct detection experiments and compare them to other dark matter constraints in the low mass regime. In this region we find parameter space where typical underground and surface detectors are completely blind to dark matter. This "hole" in the parameter space can hardly be closed with an increase in the detector exposure. Dedicated surface or high-altitude experiments may be the only way to directly probe this part of the parameter space. Show Chinese abstract

Abstract: 在临界暗物质-核子散射截面以上，任何地表直接探测实验都会失去对暗物质的灵敏度，因为地球地壳、大气和潜在的屏蔽层开始阻挡暗物质粒子。 这个临界截面通常通过解析描述暗物质粒子的平均能量损失来确定。 然而，这种处理方法高估了地球地壳的停止能力。 因此，得到的限制应被视为保守的。 我们进行蒙特卡罗模拟，以确定各种直接探测实验的临界截面的精确值，并将其与其他低质量区域的暗物质约束进行比较。 在这个区域内，我们发现了一些典型的地下和地表探测器完全无法探测暗物质的参数空间。 这个参数空间中的“空洞”很难通过增加探测器的暴露量来填补。 专门的地表或高海拔实验可能是直接探测这一参数空间的唯一方法。