{
  "annotation_id": "2b2328fb-fe69-489d-b83d-6750a0f8885f",
  "date_created": "2026-03-02T18:00:01.194000Z",
  "date_modified": "2026-03-02T18:00:01.194000Z",
  "file_hash": "78f25bb56dea8d6f19fce5730639cc1f0e17abe7cd14fb01eb49d86b54fd719b",
  "private": false,
  "record": {
    "abstract": "We obtain the electromagnetic form factors of the $\\gamma N\\Delta$ transition\nby analyzing recent pion-electroproduction data using a fully relativistic\ndynamical model. Special care is taken to satisfy Ward-Takahashi identities for\nthe Born term in the presence of form factors thereby allowing the use of\nrealistic electromagnetic form factors of the nucleon and pion. We parametrize\nthe $Q^2$ dependence of the {\\it bare} $\\gamma N \\Delta$ form factors by a\nthree-parameter form which is consistent with the asymptotic behavior inferred\nfrom QCD. The parameters of the bare $\\gamma N \\Delta$ form factors are the\nonly free parameters of the model and are fitted to the differential\ncross-section and multipole-analysis data up to $Q^2=4$ (GeV/c)$^2$ in the\n$\\Delta(1232)$-resonance region. This analysis emphasizes the significance of\nthe pion-cloud effects in the extraction of the resonance parameters.",
    "arxiv_id": "nucl-th/0407069",
    "authors": [
      "G. L. Caia",
      "V. Pascalutsa",
      "J. A. Tjon",
      "L. E. Wright"
    ],
    "categories": [
      "nucl-th",
      "hep-ph"
    ],
    "doi": "10.1103/PhysRevC.70.032201",
    "journal_ref": "Phys.Rev.C70:032201,2004",
    "title": "$\\gamma^{*}N\\Delta$ Form Factors from a Relativistic Dynamical Model of   Pion Electroproduction",
    "url": "https://arxiv.org/abs/nucl-th/0407069"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "0fb0927a-044c-478b-9cce-101512895b99",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}