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The target asymmetry in hard vector-meson electroproduction and parton angular momenta

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arxiv 0809.4126 v1 pith:QSOHPZ5U submitted 2008-09-24 hep-ph

classification hep-ph
keywords asymmetrytargetangularconstrainelectroproductionmesonsmomentaparton
verification ladder T0 review T1 audit T2 compute T3 formal
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The target asymmetry for electroproduction of vector mesons is investigated within the handbag approach. While the generalized parton distribution (GPD) H is taken from a previous analysis of the elctroproduction cross section, we here construct the GPD E from double distributions and constrain it by the Pauli form factors of the nucleon, positivity bounds and sum rules. Predictions for the target asymmetry are given for various vector mesons and discussed how experimental data on the asymmetry will further constrain E and what we may learn about the angular momenta the partons carry.

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Cited by 3 Pith papers

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

  1. Photon-nucleon entanglement in Compton scattering at low and high energies

    hep-ph 2026-08 conditional novelty 7.0 of 10

    Photon-nucleon entanglement in polarized Compton scattering is generically present and, for neutrons, strongly controlled by the nucleon electric and magnetic polarizabilities.

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    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. Gluon Generalized TMD signatures at the EIC from exclusive heavy (axial-)vector meson production

    hep-ph 2026-01 conditional novelty 6.0 of 10

    Exclusive heavy vector-meson electroproduction can yield cos2φ and sin2φ azimuthal asymmetries whose coefficients contain moments of gluon GTMDs F_{1,4} and G_{1,1}.

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