论文标题
复合暗物质的新景观中的新实验约束
New Experimental Constraints in a New Landscape for Composite Dark Matter
论文作者
论文摘要
某些强烈相互作用的暗物质候选者可能会逃避检测，并且在约束其参数空间方面已完成了许多工作。最近，从理论上讲，$m_χ\ gtrsim的散射横截面1 $ gev点状的暗物质和核不能显着大于核的几何横截面。这种实现关闭了尖端相互作用的暗物质的参数空间。但是，理论上对于复合粒子而言，突然相互作用的暗物质仍然是可能的，并且很大程度上可以打开参数空间。我们根据芝加哥大学的新颖探测器的数据设置了新的，广泛的限制。通过需要两个空间分离的液体史尺度模块之间的巧合检测，可以极大地抑制背景。对于暗物质（$ v \ sim 10^{ - 3} $ c），飞行时间为$ \ sim 2〜μ {\ rm s} $，而对于宇宙射线，它将是$ \ sim 2〜 {\ rm ns ns} $。我们概述了以适度的成本大大提高灵敏度的方法。
Certain strongly interacting dark matter candidates could have evaded detection, and much work has been done on constraining their parameter space. Recently, it was shown theoretically that the scattering cross section for $m_χ\gtrsim 1$ GeV pointlike dark matter with a nucleus cannot be significantly larger than the geometric cross section of the nucleus. This realization closes the parameter space for pointlike strongly interacting dark matter. However, strongly interacting dark matter is still theoretically possible for composite particles, with much parameter space open. We set new, wide-ranging limits based on data from a novel detector at the University of Chicago. Backgrounds are greatly suppressed by requiring coincidence detection between two spatially separated liquid-scintillator modules. For dark matter ($v \sim 10^{-3}$c), the time of flight would be $\sim 2~μ{\rm s}$, whereas for cosmic rays, it would be $\sim 2~{\rm ns}$. We outline ways to greatly increase sensitivity at modest costs.
