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.
Cite
@article{arxiv.hep-ex/0502029,
title = {Forward jet production in deep inelastic ep scattering and low-x parton dynamics at HERA},
author = {ZEUS Collaboration},
journal= {arXiv preprint arXiv:hep-ex/0502029},
year = {2012}
}
Comments
25 pages, 4 figures