Inclusive-jet and dijet cross-sections in high-Q2 DIS at HERA

TL;DR

This paper presents a new measurement of inclusive-jet and dijet cross-sections in high-Q2 deep-inelastic scattering at HERA, showing good agreement with NLO QCD predictions within uncertainties.

Contribution

It provides precise measurements of jet cross-sections in a specific kinematic regime, testing and confirming NLO QCD calculations in high-Q2 DIS.

Findings

Measured cross-sections agree with NLO QCD within uncertainties

Data covers Q^2 > 125 GeV^2 and specific angular range

Results support the validity of perturbative QCD in this regime

Abstract

A new ZEUS measurement of inclusive-jet and dijet cross-sections in the Breit frame performed in deep-inelastic ep scattering data is presented. The data correspond to an integrated luminosity of about 82 ${\rm pb^{-1}}$ and are resctricted to the kinematic regime $Q^2 >$125${{\rm GeV^2}}$ and -0.65$< \cos\gamma_{had} <$0.65, where $Q^2$ is the photon virtuality and $\cos\gamma_{had}$ corresponds to the polar angle of the hadronic system. The cross-sections are measured as functions of various kinematic and jet observables and are compared to NLO QCD calculations which describe the data well within all uncertainties.