Measurement of Dijet Azimuthal Decorrelations in pp Collisions at sqrt(s)=7 TeV

TL;DR

This paper reports a measurement of azimuthal decorrelations between the two leading jets in proton-proton collisions at 7 TeV, providing insights into multi-jet event dynamics and testing perturbative QCD at high energies.

Contribution

It presents the first measurement of normalized differential cross sections for dijet azimuthal decorrelations at 7 TeV using the ATLAS detector, extending the energy range of previous studies.

Findings

Distributions include jets with transverse momenta up to 1.3 TeV

Results probe perturbative QCD in a high energy regime

Data collected from 36/pb dataset at LHC

Abstract

Azimuthal decorrelations between the two central jets with the largest transverse momenta are sensitive to the dynamics of events with multiple jets. We present a measurement of the normalized differential cross section based on the full dataset (L=36/pb) acquired by the ATLAS detector during the 2010 sqrt(s)=7 TeV proton-proton run of the LHC. The measured distributions include jets with transverse momenta up to 1.3 TeV, probing perturbative QCD in a high energy regime.