Development of Validation Tools for MCP Scale Factors and Efficiencies in ATLAS

Valenzuela Osses, Vicente Ignacio

Published October 3, 2025 | Version v1

Report Open

Development of Validation Tools for MCP Scale Factors and Efficiencies in ATLAS

Valenzuela Osses, Vicente Ignacio^{1, 2}

1. Pontificia Universidad Católica de Chile
2. Millennium Institute for Subatomic physics at high energy frontier

Contributors

Supervisor (2):

1. National and Kapodistrian University of Athens
2. University of Paris-Saclay

This work was done in the context of the CERN Summer Student Programme in 2025, it presents the development of validation scripts for MCP recommendations, focusing on Scale Factors and efficiencies. The tools allow direct access to ROOT files on CVMFS and provide visualisation of statistical and systematic uncertainties, as well as comparisons across years, releases, and working points. A dedicated module was implemented to scan all available years, while additional scripts handle uncertainty bands and cross-checks between recommendations. Together, these tools offer a flexible and reproducible script to ensure the robustness of MCP inputs for physics analyses.

Files