Inclusive dijet cross sections in neutral current deep inelastic scattering at HERA

TL;DR

This paper reports measurements of inclusive dijet cross sections in neutral current deep inelastic scattering at HERA, covering a wide Q^2 range, and compares results with next-to-leading-order QCD predictions.

Contribution

The study provides detailed measurements of dijet cross sections at high Q^2 and tests the accuracy of NLO QCD calculations in this regime.

Findings

Cross sections agree with NLO QCD predictions

Measurements cover Q^2 from 125 to 20000 GeV^2

Jets reconstructed with k_T algorithm in Breit frame

Abstract

Single- and double-differential inclusive dijet cross sections in neutral current deep inelastic ep scattering have been measured with the ZEUS detector using an integrated luminosity of 374 pb^-1. The measurement was performed at large values of the photon virtuality, Q^2, between 125 and 20000 GeV^2. The jets were reconstructed with the k_T cluster algorithm in the Breit reference frame and selected by requiring their transverse energies in the Breit frame, E_T,B^jet, to be larger than 8 GeV. In addition, the invariant mass of the dijet system, M_jj, was required to be greater than 20 GeV. The cross sections are described by the predictions of next-to-leading-order QCD.