CheckMATE 2: From the model to the limit

TL;DR

CheckMATE 2 enhances the testing of new physics models against LHC data by integrating event generation, increasing speed, and allowing combined signal region analysis, thus streamlining model validation.

Contribution

The paper introduces CheckMATE 2, which integrates Monte Carlo event generation and improves analysis speed and flexibility for testing new physics models against LHC data.

Findings

Integrated Madgraph and Pythia 8 for direct model testing.

Significant increase in analysis speed.

Enabled combined likelihood analysis for signal regions.

Abstract

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 Madgraph 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.