CheckMATE 2: From the model to the limit

We present the latest developments to the CheckMATE program that allows models of new physics to be easily tested against the recent LHC data. To achieve this goal, the core of CheckMATE now contains over 60 LHC analyses of which 12 are from the 13 TeV run. The main new feature is that CheckMATE 2 now integrates the Monte Carlo event generation via MadGraph5_aMC@NLO and Pythia 8. This allows users to go directly from a SLHA file or UFO model to the result of whether a model is allowed or not. In addition, the integration of the event generation leads to a significant increase in the speed of the program. Many other improvements have also been made, including the possibility to now combine signal regions to give a total likelihood for a model.

我们介绍了CheckMATE程序的最新进展，该工具可便捷地将新物理模型与近期大型强子对撞机（Large Hadron Collider, LHC）数据开展检验验证。为达成这一目标，CheckMATE的核心模块现已涵盖超过60项LHC分析项目，其中12项基于13 TeV对撞运行数据。其核心新增功能为：CheckMATE 2现已集成通过MadGraph5_aMC@NLO与Pythia 8实现的蒙特卡洛（Monte Carlo）事件生成流程。这一集成使得用户可直接从SLHA文件或UFO模型出发，直接得到该模型是否符合实验约束的判定结果。此外，事件生成流程的集成还显著提升了程序的运行速度。团队还完成了多项其他改进，包括新增可将多个信号区域组合以计算模型总似然度的功能。