Nonforward Parton Distributions

Details Nonforward Parton Distributions Nonforward Parton Distributions

1997-04-02

arxiv.org/abs/hep-ph/9704207v7

Phys.Rev. D56 (1997) 5524-5557

Physics

High Energy Physics

High Energy Physics - Phenomenology

Final version, to be published in Phys.Rev.D

Scientific paper

10.1103/PhysRevD.56.5524

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_\zeta (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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