Forward jet production in deep inelastic ep scattering and low-x parton dynamics at HERA

Abstract

Differential inclusive jet cross sections in neutral current deep inelastic ep scattering have been measured with the ZEUS detector. Three phase-space regions have been selected in order to study parton dynamics where the effects of BFKL evolution might be present. The measurements have been compared to the predictions of leading-logarithm parton shower Monte Carlo models and fixed-order perturbative QCD calculations. In the forward region, QCD calculations at order alpha_s^1 underestimate the data up to an order of magnitude at low x. An improved description of the data in this region is obtained by including QCD corrections at order alpha_s^2, which account for the lowest-order t-channel gluon-exchange diagrams, highlighting the importance of such terms in parton dynamics at low x.

25 pages, 4 figures

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Cited by in corpus (19)

• A Large Hadron Electron Collider at CERN: Report on the Physics and Design Concepts for Machine and Detector
• Forward Jet Production at the Large Hadron Collider
• Deep Inelastic Electron-Nucleon Scattering at the LHC
• Small x behavior of parton distributions. A study of higher twist effects
• Azimuthal decorrelation of forward jets in Deep Inelastic Scattering
• Two-Loop QCD Helicity Amplitudes for (2+1)-Jet Production in Deep Inelastic Scattering
• Forward-jet production in deep inelastic ep scattering at HERA
• Small-x QCD effects in forward-jet and Mueller-Navelet jet production
• Low-x QCD physics from RHIC and HERA to the LHC
• Measurement of the Azimuthal Correlation between the most Forward Jet and the Scattered Positron in Deep-Inelastic Scattering at HERA
• Next-to-leading BFKL phenomenology of forward-jet cross sections at HERA
• disorder: Deep inelastic scattering at high orders
• Low-x QCD with CMS at the LHC
• Three- and Four-jet Production at Low x at HERA
• Measurement of lepton-jet correlation in deep-inelastic scattering with the H1 detector using machine learning for unfolding
• Order alpha_s^2 QCD corrections to inclusive jet production in deep inelastic scattering
• Studies of heavy flavour production and the hadronic final state in high energy ep collisions
• Jets in ep and gammap Scattering at HERA
• QCD Physics with ZEUS and H1 at HERA