QCD sum rules and models for generalized parton distributions


  • A. Radyushkin

    1. Physics Department, Old Dominion University, Norfolk, VA 23529, USA
    2. Theory Group, Jefferson Lab, Newport News, VA 23606, USA
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    • Dedicated to Klaus Goeke on the occasion of his 60th birthday

  • Also at Laboratory of Theoretical Physics, Dubna, 141980, Russian Federation.


I use QCD sum rule ideas to construct models for generalized parton distributions. To this end, the perturbative parts of QCD sum rules for the pion and nucleon electromagnetic form factors are interpreted in terms of GPDs and two models are discussed. One of them takes the double Borel transform at adjusted value of the Borel parameter as a model for nonforward parton densities, and another is based on the local duality relation. Possible ways of improving these Ansätze are briefly discussed.