Measurements of differential jet cross sections in proton-proton collisions at sqrt(s) = 7 TeV with the CMS detector

TL;DR

This paper reports measurements of inclusive and dijet production cross sections in proton-proton collisions at 7 TeV, using CMS data, and compares the results with next-to-leading order perturbative QCD predictions.

Contribution

It provides detailed measurements of jet cross sections at high energies and rapidities, extending previous results and testing QCD predictions with multiple parton distribution functions.

Findings

Measured cross sections agree with NLO QCD predictions within uncertainties.

Extended the kinematic range of jet measurements up to 2 TeV in transverse momentum.

Provided data to constrain parton distribution functions at high momentum fractions.

Abstract

Measurements of inclusive jet and dijet production cross sections are presented. Data from LHC proton-proton collisions at sqrt(s) = 7 TeV, corresponding to 5.0 inverse femtobarns of integrated luminosity, have been collected with the CMS detector. Jets are reconstructed up to rapidity 2.5, transverse momentum 2 TeV, and dijet invariant mass 5 TeV, using the anti-kt clustering algorithm with distance parameter R = 0.7. The measured cross sections are corrected for detector effects and compared to perturbative QCD predictions at next-to-leading order, using five sets of parton distribution functions.