Exclusive vector meson production at HERA from QCD with saturation

Abstract

Following recent predictions that the geometric scaling properties of deep inelastic scattering data in inclusive gamma*-p collisions are expected also in exclusive diffractive processes, we investigate the diffractive production of vector mesons. Using analytic results in the framework of the BK equation at non-zero momentum transfer, we extend to the non-forward amplitude a QCD-inspired forward saturation model including charm, following the theoretical predictions for the momentum transfer dependence of the saturation scale. We obtain a good fit to the available HERA data and make predictions for deeply virtual Compton scattering measurements.

10 pages, 5 figures, full analysis including the charm contribution and J/PSI production. Conclusions confirmed

References in corpus (2)

• Saturation QCD predictions with heavy quarks at HERA
• A unified description of diffractive deep inelastic scattering with saturation

Cited by in corpus (10)

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• Nonlinearity of vacuum reggeons and exclusive diffractive production of vector mesons at HERA
• Deeply Virtual Compton Scattering at HERA and perspectives at CERN
• The dipole picture in DIS: saturation and heavy quarks