{
  "annotation_id": "f55a228a-cffa-4583-b537-a5b3a9d50dc6",
  "date_created": "2026-03-02T18:00:21.655000Z",
  "date_modified": "2026-03-02T18:00:21.655000Z",
  "file_hash": "845eb1e8437a19430130d3a54cc25cc4ea7f6505399fe9c05599406e6004a8ce",
  "private": false,
  "record": {
    "abstract": "The production of $\\omega$-mesons in proton-proton collisions for proton\nincident energies up to 2.2 GeV is investigated within a meson-exchange model\nof hadronic interactions.\n  We find a large cancellation between the dominant $\\pi\\rho\\omega$\nmeson-exchange current and nucleonic current contributions. A comparison with\npreliminary data from SATURNE calls for the inclusion of off-shell form factors\nat the $NN\\omega$ and $\\pi\\rho\\omega$ production vertices. Due to the present\nlack of knowledge of these form factors, together with the destructive\ninterference mentioned above, the relative magnitude of the nucleonic and\nmeson-exchange current contributions cannot be determined from existing total\ncross section data. However, it is shown that the angular distribution of the\nproduced $\\omega$-mesons provides an unique and clear signature of the\nmagnitude of these currents, thus allowing one to disentangle these two basic\nreaction mechanisms.",
    "arxiv_id": "nucl-th/9802013",
    "authors": [
      "K. Nakayama",
      "A. Szczurek",
      "C. Hanhart",
      "J. Haidenbauer",
      "J. Speth"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevC.57.1580",
    "journal_ref": "Phys.Rev.C57:1580-1587,1998",
    "title": "Production of $\\omega$-mesons in proton-proton collisions",
    "url": "https://arxiv.org/abs/nucl-th/9802013"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "0d30dd3f-1bb3-4224-b5e0-b1ca313aea22",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}