The gluon distribution is dominated by the hard pomeron at small x and all Q2, with no soft-pomeron contribution. This describes well not only the DGLAP evolution of the hard-pomeron part of F2(x,Q2), but also charm photoproduction and electroproduction, and the longitudinal structure function, all calculated in leading-order pQCD.
@article{arxiv.hep-ph/0204165,
title = {The proton's gluon distribution},
author = {A Donnachie and P V Landshoff},
journal= {arXiv preprint arXiv:hep-ph/0204165},
year = {2014}
}
Comments
Version accepted for publication (figure 1 added, plus minor changes)