{
  "annotation_id": "85c6e6f1-8320-4aae-92cf-341d363d2729",
  "date_created": "2026-03-02T18:00:25.440000Z",
  "date_modified": "2026-03-02T18:00:25.440000Z",
  "file_hash": "31029efa6e124f4845c76d67a2b0df38e2da9183428d6ba23afedec722a635f4",
  "private": false,
  "record": {
    "abstract": "The ladder Bethe-Salpeter solution for the dressed photon-quark vertex is\nused to study the low-momentum behavior of the pion electromagnetic and the\n$\\gamma^\\star \\pi^0 \\gamma$ transition form factors. With model parameters\npreviously fixed by light meson masses and decay constants, the low-momentum\nslope of both form factors is in excellent agreement with the data. In\ncomparison, the often-used Ball-Chiu Ansatz for the vertex is found to be\ndeficient; less than half of the obtained $r_\\pi^2$ is generated by that Ansatz\nwhile the remainder of the charge radius could be attributed to the tail of the\n$\\rho$ resonance.",
    "arxiv_id": "nucl-th/9908045",
    "authors": [
      "P. Maris",
      "P. C. Tandy"
    ],
    "categories": [
      "nucl-th",
      "hep-ph"
    ],
    "doi": "10.1016/S0375-9474(99)00627-2",
    "journal_ref": "Nucl.Phys. A663 (2000) 401-404",
    "title": "The quark-photon vertex and meson electromagnetic form factors",
    "url": "https://arxiv.org/abs/nucl-th/9908045"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "2489843c-d5cf-4338-a764-d7c95eb0fdbe",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}