D0 measurement of the dijet azimuthal decorrelations

TL;DR

This paper reports on the D0 experiment's measurement of azimuthal angle correlations between the two highest transverse momentum jets in proton-antiproton collisions at 1.96 TeV, comparing results with theoretical predictions and event generators.

Contribution

First measurement of dijet azimuthal decorrelations at 1.96 TeV using D0 detector data, providing data for testing QCD predictions and event generator tuning.

Findings

Data agrees with next-to-leading order pQCD calculations.

Results are consistent with tuned Pythia, Herwig, Alpgen, and Sherpa simulations.

Provides a benchmark for QCD modeling of jet correlations.

Abstract

We present the D0 measurement of correlations in the azimuthal angle between the two largest transverse momentum jets produced in ppbar collisions at a center-of-mass energy 1.96 TeV in the central rapidity region. The results are based on an inclusive dijet event sample corresponding to an integrated luminosity of 150/pb. Data is in good agreement with next-to-leading order pQCD calculations, and with tuned Pythia, Herwig, Alpgen and Sherpa event generators.