Exclusive vector meson production at HERA from QCD with saturation

Details Exclusive vector meson production at HERA from QCD with saturation Exclusive vector meson production at HERA from QCD with saturation

2007-02-16

arxiv.org/abs/hep-ph/0702171v2

Phys.Rev.D76:034011,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

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

Scientific paper

10.1103/PhysRevD.76.034011

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.

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