Jet Production in proton-proton collisions at sqrt(s) =7 TeV with the ATLAS experiment

TL;DR

This paper presents the first measurements of energetic jet characteristics in 7 TeV proton-proton collisions using ATLAS, comparing data with QCD predictions to improve understanding of jet production.

Contribution

It provides the initial detailed analysis of jet production at 7 TeV with ATLAS, employing anti-kt clustering and comparing results to QCD models.

Findings

Jet production characteristics measured for p_T>30 GeV and |y|<2.8.

Data agrees with leading-order QCD plus parton shower predictions.

Results enhance understanding of jet dynamics at high energies.

Abstract

We report on the first measurements done with the ATLAS experiment of the characteristics of energetic jets produced in proton-proton collisions at the center of mass energy of 7 TeV. Jets are reconstructed using the anti-kt clustering algorithm with distance parameter R=0.6. The kinematic region investigated in this paper corresponds to jets with transverse momentum p_T>30$GeV and rapidity |y_jet |<2.8. A critical understanding of the jet production is obtained by comparing the data to predictions based on leading-order QCD matrix elements plus parton shower Monte Carlo simulated events. The results shown are obtained on a data sample corresponding to about 1 nb**-1 of integrated luminosity delivered by the Large Hadron Collider.