Measurement of multi-jet cross sections in proton-proton collisions at a 7 TeV center-of-mass energy

TL;DR

This paper measures multi-jet production cross sections in 7 TeV proton-proton collisions using ATLAS data, comparing results with theoretical predictions to test quantum chromodynamics models.

Contribution

First measurement of multi-jet cross sections at 7 TeV with detailed comparison to theoretical models.

Findings

Measured multi-jet cross sections agree with NLO QCD calculations

Results constrain parton distribution functions

Data provides benchmarks for future QCD studies

Abstract

Inclusive multi-jet production is studied in proton-proton collisions at a center-of-mass energy of 7 TeV, using the ATLAS detector. The data sample corresponds to an integrated luminosity of 2.4 pb^-1. Results on multi-jet cross sections are presented and compared to both leading-order plus parton-shower Monte Carlo predictions and to next-to-leading-order QCD calculations.