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Hard Exclusive Meson Production and Nonforward Parton Distributions

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arxiv hep-ph/9711227 v2 pith:YDND3WA2 submitted 1997-11-04 hep-ph

L. Mankiewicz , G. Piller , T. Weigl This is my paper · ORCID
classification hep-ph
keywords nonforwardexclusivehardamplitudescorrespondingdistributiondistributionsfeatures
verification ladder T0 review T1 audit T2 compute T3 formal
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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 pi^0, eta, and neutral vector meson production amplitudes and discuss general features of the corresponding cross sections.

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Forward citations

Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Matching collinear factorization with color-glass condensate for inclusive and exclusive deep inelastic scattering

    hep-ph 2026-05 accept novelty 7.0 of 10

    Collinear factorization amplitudes exactly reproduce the large-Q² expansion of CGC amplitudes for inclusive DIS, DVCS, and DVMP at the amplitude level.

  2. Toward an advanced phenomenology of $\pi N$ transition distribution amplitudes

    hep-ph 2025-06 conditional novelty 7.0 of 10

    A flexible two-component model of pion-nucleon transition distribution amplitudes is fitted to CLAS data and used to predict cross-sections and three leading-twist spin asymmetries for backward pion electroproduction.

  3. Regge trajectories, detectors, and distributions in the critical ${\rm O}(N)$ model

    hep-th 2025-06 conditional novelty 6.0 of 10

    In the critical O(N) model, renormalizing detector and distribution light-ray operators at leading order in 1/N yields Regge intercepts, the leading-twist splitting function, and a BFKL-type anomalous spin.

  4. Mapping Parton Distributions of Hadrons with Lattice QCD

    hep-lat 2025-06 accept

    A review of lattice QCD methods and results for x-dependent parton distribution functions and generalized parton distributions of hadrons.

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