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Genuine twist-3 contributions to the generalized parton distributions from instantons

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arxiv hep-ph/0212372 v2 pith:FR3WJTJZ submitted 2002-12-26 hep-ph

D.V. Kiptily , M.V. Polyakov This is my paper · ORCID
classification hep-ph
keywords twist-3contributionsdistributionsgeneralizedgenuinegpdsinstantonparton
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The genuine twist-3 quark-gluon contributions to the Generalized Parton Distributions (GPDs) are estimated in the model of the instanton vacuum. These twist-3 effects are found to be parametrically suppressed relative to the ``kinematical'' twist-3 ones due to the small packing fraction of the instanton vacuum. We derive exact sum rules for the twist-3 GPDs.

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  1. Twist-3 generalized parton distributions of sea quarks at zero skewness in the light-cone quark model

    hep-ph 2025-04 conditional novelty 6.0 of 10

    A light-cone meson-baryon model is used to compute the eight nonzero twist-3 generalized parton distributions of ubar and dbar sea quarks at zero skewness, plus the derived e(x) and orbital angular momentum.

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