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arXiv · hep-ph/9704207

Nonforward Parton Distributions

A. V. Radyushkin
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Abstract

Applications of perturbative QCD to deeply virtual Compton scattering and hard exclusive electroproduction processes require a generalization of usual parton distributions for the case when long-distance information is accumulated in nonforward matrix elements of quark and gluon light-cone operators. We describe two types of nonperturbative functions parametrizing such matrix elements: double distributions F(x,y;t) and nonforward distribution functions F_ζ(X;t), discuss their spectral properties, evolution equations which they satisfy, basic uses and general aspects of factorization for hard exclusive processes.

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A. V. Radyushkin. 1997-07-25. Nonforward Parton Distributions. https://doi.org/10.1103/physrevd.56.5524

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