{
  "abstract": "We present a theoretically constrained phenomenological reconstruction of the unpolarized, chiral-even, leading-twist proton generalized parton distributions $H^q$ and $E^q$. At zero skewness, valence-quark distributions are combined with flavor-dependent exponential profiles calibrated simultaneously against phenomenological representations of the proton and neutron electromagnetic form factors. The construction imposes exact valence and anomalous-magnetic-moment normalizations, the low-scale condition $B^{u+d}(0)=0$, the required endpoint behavior, and the complete Gaussian impact-parameter positivity bound. The resulting parametrization provides a reasonable description of the electromagnetic form factors and their slopes while revealing the tension between strict GPD consistency and a precision reproduction of all low-$Q^2$ observables within the adopted ansatz. We extend the distributions to nonzero skewness using normalized double distributions and introduce an independent $D$-term to complete the relevant Mellin polynomials. We examine electromagnetic and energy--momentum-tensor form factors, impact-parameter distributions, positivity, polynomiality, and illustrative mechanical properties. The analysis distinguishes information constrained by electromagnetic data from additional assumptions governing skewness and the mechanical sector, thereby providing a transparent elastic baseline for future studies of nucleon-to-resonance transition GPDs.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.05635",
  "author_total": 6,
  "authors": [
    {
      "name": "A. Capelo-Astudillo"
    },
    {
      "name": "T. Aguilar"
    },
    {
      "name": "M. Conde-Correa"
    },
    {
      "name": "A. Duenas-Vidal"
    },
    {
      "name": "P. G. Ortega"
    },
    {
      "name": "J. Segovia"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/frdey64hydc6t.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.05635",
  "fulltext_url": null,
  "id": "frdey64hydc6t",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.05635",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "hep-ex"
    ],
    [
      "arxiv",
      "hep-lat"
    ],
    [
      "arxiv",
      "hep-ph"
    ],
    [
      "arxiv",
      "nucl-ex"
    ],
    [
      "arxiv",
      "nucl-th"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.05635",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-03",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/frdey64hydc6t.ris",
  "sources": [
    {
      "first_seen": "2026-11-05T15:20:56Z",
      "native_id": "2611.05635",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.05635"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ex",
      "subfield": "high-energy"
    },
    {
      "field": "physics",
      "origin": "arxiv:nucl-ex",
      "subfield": "nuclear"
    }
  ],
  "title": "Proton generalized parton distributions from electromagnetic form factors: A theoretically constrained phenomenological reconstruction",
  "title_text": "Proton generalized parton distributions from electromagnetic form factors: A theoretically constrained phenomenological reconstruction",
  "type": "preprint",
  "updated_at": "2026-11-06T18:21:10Z",
  "url": "https://research.draconitic.com/paper/frdey64hydc6t",
  "venue": "arXiv",
  "versions": []
}