Performance of Monte Carlo Event Generators for the Production of Boson and Multi-Boson States ATLAS Analysis

TL;DR

This paper evaluates the performance of various Monte Carlo event generators in modeling boson and multi-boson production processes at 13 TeV, comparing their predictions with ATLAS data to assess accuracy and uncertainties.

Contribution

It provides a comprehensive comparison of MC generators against experimental data for boson and multi-boson processes at LHC energies, highlighting strengths and limitations.

Findings

Certain generators accurately reproduce key kinematic distributions.

Systematic uncertainties significantly impact modeling accuracy.

Discrepancies identified guide future generator improvements.

Abstract

The Monte Carlo (MC) setups used by ATLAS to model boson$+\mathrm{jets}$ and multi-boson processes at $\sqrt{s}$ = 13 TeV in proton-proton collisions are described. Comparisons between data and several event generators are provided for key kinematic distributions. Issues associated with the evaluation of systematic uncertainties are also discussed. This proceeding is a summary of the results collected in two recent ATLAS PUB notes published for the MC workshop jointly-organised by the the ATLAS and CMS Collaborations and held at CERN in May 2017.