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Nucleon tomography and total angular momentum of valence quarks from synergy between lattice QCD and elastic scattering data

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arxiv 2409.17955 v1 pith:G5G3GQTL submitted 2024-09-26 hep-ph hep-lat

Krzysztof Cichy , Martha Constantinou , Pawe{l} Sznajder , Jakub Wagner This is my paper · ORCID
classification hep-phhep-lat
keywords extractionnucleonallowsangulardataelasticintroducelattice
verification ladder T0 review T1 audit T2 compute T3 formal
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We present an exploratory work on integrating lattice-QCD results with experimental data for elastic scattering. Within the framework of generalized parton distributions (GPDs), this approach allows for the extraction of detailed information about nucleon tomography and the total angular momentum carried by valence quarks. To accomplish this reliably, we introduce a new quantity, the "double ratio", which significantly reduces the systematic uncertainties inherent in lattice QCD computations. Moreover, we introduce a "shadow" term in the extraction procedure, which is sensitive only to lattice-QCD results. This term allows us to investigate the model dependence of the extraction, providing a more flexible description of the nucleon that goes beyond the previously considered bell-shaped distribution.

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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. Exclusive Quark and Gluon Dijet Production as Probes of GPDs at Collider Energies

    hep-ph 2026-07 unverdicted novelty 6.0 of 10

    Exclusive quark and gluon dijet electroproduction is analyzed in collinear factorization as a GPD probe, extending prior work with helicity GPDs and an electromagnetic channel, with HERA comparisons and EIC projections.

  2. Implications of exclusive photon leptoproduction measurements for the proton charge-radius puzzle

    hep-ph 2026-07 conditional novelty 5.0 of 10

    After excluding or cutting low-|t| CLAS 2018 data, BH-dominated EP measurements yield a proton charge radius smaller than the PDG average and consistent with PRad and muonic hydrogen.

  3. Hadron structure via Generalized Parton Distributions

    hep-lat 2025-02 unverdicted

    A proceedings review of lattice QCD calculations that extract x-dependent generalized parton distributions via the quasi-distribution approach, including recent asymmetric-frame results.

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