Hard exclusive meson production and nonforward parton distributions
L Mankiewicz, G Piller, T Weigl - … Physical Journal C-Particles and Fields, 1998 - Springer
L Mankiewicz, G Piller, T Weigl
The European Physical Journal C-Particles and Fields, 1998•SpringerWe 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 distributions. We derive explicit expressions …
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 distributions. We derive explicit expressions …
Abstract
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 distributions. We derive explicit expressions for hard exclusive π0, η), and neutral vector meson production amplitudes and discuss general features of the corresponding cross sections.
Springer
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