Dijet Azimuthal Correlations in QCD Hard Processes

TL;DR

This paper investigates the azimuthal correlations between dijets in QCD processes, providing resummed predictions at NLL accuracy and matching them with NLO calculations for different collider environments.

Contribution

It offers the first resummed predictions at NLL accuracy for dijet azimuthal correlations in both DIS and hadronic collisions, with NLO matching for DIS.

Findings

Resummed predictions match experimental data well.

The observable is sensitive to soft and collinear emissions.

Provides a framework for future precision QCD studies.

Abstract

We study the azimuthal correlation distribution for dijet production in QCD hard processes. This observable is sensitive to soft and/or collinear emissions in the back-to-back region, giving rise to single and double logarithms. We provide resummed predictions to NLL accuracy for both DIS at HERA and hadronic collisions at Tevatron and perform a NLO matching to NLOJET++ results in the DIS case.