Speaker
Prof.
Wolfgang Schaefer
(Institute of Nuclear Physics PAN)
Summary
Experiments on vector meson photoproduction have been a testbed of ideas on the production mechanism, the QCD Pomeron exchange. High energy protons or ions are the source of a flux of Weizs\"acker-Williams photons, which can be utilized to study the photoproduction of vector mesons also at colliders.We discuss how information on the small-x gluon distribution in protons and nuclei can be obtained. We present our calculations based on a k_perp-factorization approach which allows us to construct the unintegrated glue of a nucleus from the free-nucleon one. Saturation effects are incorporated by an explicit treatment of the qqbarg-Fock state. We also discuss incoherent diffraction.
Primary author
Prof.
Wolfgang Schaefer
(Institute of Nuclear Physics PAN)
