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Hard exclusive meson production and nonforward parton distributions
1998
European Physical Journal C: Particles and Fields
We present an analysis of twist-2, leading order QCD amplitudes for hard exclusive leptoproduction of mesons in terms of double/nonforward parton distribution functions. After reviewing some general features of nonforward nucleon matrix elements of twist-2 QCD string operators, we propose a phenomenological model for quark and gluon nonforward distribution functions. The corresponding QCD evolution equations are solved in the leading logarithmic approximation for flavor nonsinglet
doi:10.1007/s100520050253
fatcat:q7tp4h2ewfaddc5vxmgmhkoqha