{
  "annotation_id": "ba35b429-4eb8-4b53-9d7f-a0408d93e544",
  "date_created": "2026-03-02T18:00:07.846000Z",
  "date_modified": "2026-03-02T18:00:07.846000Z",
  "file_hash": "a7f5b9a8a3a2094908431ba18bfed2e4e1ec2ff14772e58668b4e747fe725759",
  "private": false,
  "record": {
    "abstract": "The external-field QCD Sum Rules method is used to evaluate the coupling\nconstant of the light isoscalar-scalar meson (``$\\sigma$\u0027\u0027 or \\epsilon) to the\nnucleon. The contributions that come from the excited nucleon states and the\nresponse of the continuum threshold to the external field are calculated. The\nobtained value of the coupling constant is compatible with the large value\nrequired in one-boson exchange potential models of the two-nucleon interaction.",
    "arxiv_id": "nucl-th/0603056",
    "authors": [
      "G. Erkol",
      "Th. A. Rijken",
      "R. G. E. Timmermans"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevC.72.035209",
    "journal_ref": "Phys.Rev.C72:035209,2005",
    "title": "The nucleon-sigma coupling constant in QCD Sum Rules",
    "url": "https://arxiv.org/abs/nucl-th/0603056"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b53863fa-3d18-40dd-ad58-b23d9d6fcefd",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}