{
  "annotation_id": "9f6a2c39-8d14-4d18-b555-5b4a20fabcf2",
  "date_created": "2026-03-02T18:00:25.356000Z",
  "date_modified": "2026-03-02T18:00:25.356000Z",
  "file_hash": "8fc98803cf7c6cbc7fc9141afebd83976a662fe4e8e88d62f3f57f8869bf8d3d",
  "private": false,
  "record": {
    "abstract": "The piNN vertex function is calculated within a dispersion theoretical\napproach, including both pi-rho and pi-sigma intermediate states, where the\nsigma meson is an abbreviation for a correlated pion pair in a relative S-wave\nwith isospin I=0. A strong coupling between the pi-sigma and the pi-rho states\nis found. This leads to a softening of the piNN form factor. In a monopole\nparameterization, a cut-off Lambda=800 MeV is obtained as compared to\nLambda=1000 MeV using pi-rho intermediate states only.",
    "arxiv_id": "nucl-th/9905043",
    "authors": [
      "R. Boeckmann",
      "C. Hanhart",
      "O. Krehl",
      "S. Krewald",
      "J. Speth"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevC.60.055212",
    "journal_ref": "Phys.Rev. C60 (1999) 055212",
    "title": "The piNN vertex function in a meson-theoretical model",
    "url": "https://arxiv.org/abs/nucl-th/9905043"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b17b190e-b57c-43bf-ab3a-f2164830e3bd",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}