Evolution of non-forward parton distributions in next-to-leading order: singlet sector

Abstract

We present a general method for the solution of the renormalization group equations for the non-forward parton distributions on the two-loop level in the flavour singlet channel based on an orthogonal polynomial reconstruction. Using this formalism we study the effects of the evolution on recently proposed model distribution functions.

Comments: 19 pages, LaTeX, 3 figures; factor of momentum fraction in front of forward gluon density, lost in numerical modeling of input gluon SPD from double distribution, is recovered: evolution curves in Figs. 2 and 3 are rescaled accordingly