Exclusive Diffractive Processes within the Dipole Picture

Details Exclusive Diffractive Processes within the Dipole Picture Exclusive Diffractive Processes within the Dipole Picture

2008-07-28

arxiv.org/abs/0807.4464v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 4 figures. To appear in the proceedings of the 16th International Workshop on Deep-Inelastic Scattering and Related S

Scientific paper

We discuss two different models for the impact parameter dependent dipole cross section: one based on DGLAP evolution and the other inspired by the Balitsky-Kovchegov equation. The parameters are determined from fits to data on the total gamma* p cross section measured at HERA. The impact parameter dependent saturation scale is extracted. Predictions are then confronted with HERA data on exclusive diffractive vector meson production and deeply virtual Compton scattering. Finally, predictions are given for the cross sections of exclusive photoproduced J/psi and Upsilon mesons, and Z^0 bosons, expected at the Tevatron and LHC.

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