{
  "annotation_id": "c9ffbb12-9ddb-41ec-a548-694f89e242d1",
  "date_created": "2026-03-02T18:00:11.470000Z",
  "date_modified": "2026-03-02T18:00:11.470000Z",
  "file_hash": "cd7ccfa152e02b5570d4fde089cc0d70952dc3911b614b0ce20515a26ae7bd51",
  "private": false,
  "record": {
    "abstract": "In this work, we investigate the question, whether the conventional analysis\nof the electromagnetic form factors of the nucleon, evaluated in the framework\nof the cloudy bag model (CBM) or other chirally invariant hybrid quark models\nutilizing the same philosophy, is gauge invariant. In order to address that\npoint, we first formulate the CBM in a style that resembles the technique of\nloop integrals. Evaluating the self energy and the electromagnetic form factors\nof the nucleon in that manner and comparing with the standard analysis where\nnonrelativistic perturbation theory is used, allows us to show that our\napproach is appropriate and to point out, what approximations are made in the\nstandard derivation of the model. {}From the form of those loop integrals, we\nthen show that additional diagrams are needed to preserve electromagnetic gauge\ninvariance and we assess the corresponding corrections.",
    "arxiv_id": "nucl-th/9311013",
    "authors": [
      "W. Koepf",
      "E. M. Henley"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevC.49.2219",
    "journal_ref": "Phys.Rev.C49:2219-2225,1994",
    "title": "Electromagnetic Gauge Invariance of Chiral Hybrid Quark Models",
    "url": "https://arxiv.org/abs/nucl-th/9311013"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "678e39b3-5564-4b61-9253-9ce7e1abe88d",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}