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Exclusive vector meson production at HERA from QCD with saturation

C. Marquet·R. Peschanski·G. Soyez
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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.

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C. Marquet, R. Peschanski, G. Soyez. 2007-06-27. Exclusive vector meson production at HERA from QCD with saturation. https://doi.org/10.1103/physrevd.76.034011

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