The SM and NLO Multileg and SM MC Working Groups: Summary Report

TL;DR

This report summarizes recent advances in multi-leg NLO calculations, their integration into Monte Carlo simulations, and the impact of early LHC data on QCD modeling, highlighting progress and future directions.

Contribution

It provides a comprehensive overview of theoretical developments, data impact, and future challenges in multi-leg NLO QCD calculations and Monte Carlo tuning.

Findings

Significant progress in multi-leg NLO calculations.

Successful integration of NLO calculations into Monte Carlo generators.

Impact of early LHC data on QCD modeling and tuning.

Abstract

The 2011 Les Houches workshop was the first to confront LHC data. In the two years since the previous workshop there have been significant advances in both soft and hard QCD, particularly in the areas of multi-leg NLO calculations, the inclusion of those NLO calculations into parton shower Monte Carlos, and the tuning of the non-perturbative parameters of those Monte Carlos. These proceedings describe the theoretical advances that have taken place, the impact of the early LHC data, and the areas for future development.