{
  "annotation_id": "58dada20-5178-4ab1-b6ff-313b3f905d74",
  "date_created": "2026-03-02T18:00:28.971000Z",
  "date_modified": "2026-03-02T18:00:28.971000Z",
  "file_hash": "cae95ee0c728edd582c2829b06ce6495d91c7b6144f33806cf64ea0295022617",
  "private": false,
  "record": {
    "abstract": "In this work, an improved quark model approach to the $\\omega$ meson\nphotoproduction with an effective Lagrangian is reported. The {\\it t}-channel\n{\\it natural} parity exchange is consistently taken into account through the\nPomeron exchange, while the {\\it unnatural} parity exchange is described by the\n$\\pi^0$ exchange. It shows that with very limited number of parameters, all the\navailable experimental data in the low energy regime can be consistently\naccounted for in this framework. Effects from the intermediate nucleonic\nresonances are investigated in several polarization observables. The\nsensitivities of these observables to the resonance effects are probably the\nbest way for identifying those so-called \"missing resonances\" in the baryon\nspectrum.",
    "arxiv_id": "nucl-th/9909060",
    "authors": [
      "Q. Zhao"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1016/S0375-9474(00)00251-7",
    "journal_ref": "Nucl.Phys. A675 (2000) 217c-221c",
    "title": "Nucleonic resonance excitations and \"missing resonances\" in the $\\omega$   meson photoproduction",
    "url": "https://arxiv.org/abs/nucl-th/9909060"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c90fa631-89fb-4a81-9144-706808db7371",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}