Light-Ray Evolution Equations and Leading-Twist Parton Helicity-Dependent Nonforward Distributions

preprint1997arXivOpen access

Abstract

We discuss the calculation of the evolution kernels ΔW_ζ(X,Z) for the leading-twist nonforward parton distributions G_ζ(X,t) sensitive to parton helicities. We present our results for the kernels governing evolution of the relevant light-ray operators and describe a simple method allowing to obtain from them the components of the nonforward kernels ΔW_ζ(X,Z).

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