Twist-three effects in two-photon processes

Details Twist-three effects in two-photon processes Twist-three effects in two-photon processes

2000-07-04

arxiv.org/abs/hep-ph/0007031v1

Nucl.Phys. B589 (2000) 611-630

Physics

High Energy Physics

High Energy Physics - Phenomenology

19 pages, 1 figure

Scientific paper

10.1016/S0550-3213(00)00542-3

We give a general treatment of twist-three effects in two-photon reactions. We address the issue of the gauge invariance of the Compton amplitude in generalized Bjorken kinematics and relations of twist-three `transverse' skewed parton distributions to twist-two ones and interaction dependent three-particle correlation functions. Finally, we discuss leading order evolution of twist-three functions and their impact on the deeply virtual Compton scattering.

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