%0 Journal Article
%T Probing the Structure of the Pomeron
%A J. Ellis
%A G. G. Ross
%A J. Williams
%J Physics
%D 1998
%I arXiv
%R 10.1007/s100520050767
%X We suggest that the pseudo-rapidity cut dependence of diffractive deep-inelastic scattering events at HERA may provide a sensitive test of models of diffraction. A comparison with the experimental cross section shows that the Donnachie-Landshoff model and a simple two-gluon exchange model of the pomeron model are disfavoured. However a model with a direct coupling of the pomeron to quarks is viable for a harder quark--pomeron form factor, as is a model based on the leading-twist operator contribution. We also consider a direct-coupling scalar pomeron model. We comment on the implications of these results for the determination of the partonic structure of the pomeron.
%U http://arxiv.org/abs/hep-ph/9812385v1