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，该程序可便捷地基于近期大型强子对撞机（Large Hadron Collider, LHC）的实验数据对新物理模型进行检验。为实现这一目标，CheckMATE的核心模块现已收录超过60项LHC分析研究，其中12项来自13 TeV运行阶段的数据。其核心新增功能为：CheckMATE 2现已集成基于MadGraph5_aMC@NLO与Pythia 8的蒙特卡洛事件生成流程，这使得用户可直接从SLHA文件或UFO模型出发，直接获取某一模型的有效性判定结果。此外，事件生成流程的集成显著提升了程序的运行速度。团队还完成了多项其他优化，例如支持将多个信号区域进行合并以计算单模型的总似然值。