Speaker
Description
We investigate the energy dependence of the photo-production cross-section of vector mesons J/Psi and Upsilon on protons. In particular we are interested in the question whether the energy dependence has a description in terms of perturbative low x (i.e. BFKL) evolution or whether a successful description requires to invoke effects related to gluon saturation. To answer this question we study at first exclusive J/Psi and Upsilon production cross-sections and find that (collinear improved) NLO BFKL can provide a very good description of both HERA and LHC data. We will provide a detailed discussion of our result and point out potential observables which might allow to distinguish between low x evolution with and without saturation effects in photo-production processes at the LHC.
