We systematically study models with light scalar and pseudoscalar dark matter candidates and their potential signals at the LHC. First, we derive cosmological bounds on models with the Standard Model Higgs mediator and with a new weak-scale mediator. Next, we study two processes inspired by the indirect and direct detection process topologies, now happening inside the LHC detectors. We find that LHC can observe very light dark matter over a huge mass range if it is produced in mediator decays and then scatters with the detector material to generate jets in the nuclear recoil.

中文翻译：

---

大型强子对撞机中暗物质的轻度ni灭和散射

我们系统地研究了在LHC上具有轻标量和伪标量暗物质候选物及其潜在信号的模型。首先，我们使用标准模型希格斯介体和新的弱尺度介体得出模型的宇宙学界限。接下来，我们研究由LHC检测器内部发生的间接和直接检测过程拓扑启发的两个过程。我们发现，如果LHC以介体衰变产生，然后在检测器材料中散射，从而在核后坐力中产生射流，则LHC可以在很大的质量范围内观察到非常轻的暗物质。