对撞机上寻找暗物质

Looking for dark matter in colliders

大量的天文观测证实宇宙中存在暗物质。根据观测对暗物质性质的约束,目前最受关注的暗物质模型是弱作用重粒子模型。现在的暗物质探测实验也主要围绕这类暗物质粒子展开。文章介绍了探测弱作用重粒子的三种主要探测方法和各自的优缺点,特别介绍了在对撞机上探测暗物质的方法,并详细介绍了在大型强子对撞机(LHC)上寻找暗物质的最新结果及对暗物质粒子性质的最新限制。

Many astronomical observations have confirmed the existence of dark matter in the universe. According to the constraints on the properties of dark matter, the most attractive candidate is the ＂weakly interacting massive particles （WIMPs）＂, and most experiments looking for dark matter are trying to find the signals of WIMPs. In this paper we describe the three main methods to detect WIMPs and their respective merits and demerits; the emphasis is on colliders and in particular the Large Hadron Collider （LHC）. The latest observations and most recently de- fined constraints on the properties of dark matter based on the LHC results are described in de- tail.