{
  "annotation_id": "a47e1801-1e32-47b5-b6cb-d9670180ff6b",
  "date_created": "2026-03-02T18:00:22.145000Z",
  "date_modified": "2026-03-02T18:00:22.145000Z",
  "file_hash": "72e4ae4bebbc4a4a2009e94205ca3b279997fcc346cf0a82d48cdf8acec53efd",
  "private": false,
  "record": {
    "abstract": "The coherent photoproduction of $\\eta$-mesons on spin-zero nuclei is studied\nin a relativistic, non-local model, which we have previously applied to the\ncoherent photoproduction of pions. We find that different off-shell\nextrapolations of the elementary production operator lead to large effects in\nthe cross section. We also show that the almost complete suppression of the\nN(1535) seen in earlier studies on this reaction is a result of the local or\nfactorization approximation used in these works. Non-local effects can lead to\na considerable contribution from this resonance. The relative size of the\nN(1535) contribution depends on the structure of the nucleus under\nconsideration. We give an estimate for the contribution of the N(1520)\nresonance and discuss the effect of an $\\eta$-nucleus optical potential",
    "arxiv_id": "nucl-th/9807002",
    "authors": [
      "W. Peters",
      "H. Lenske",
      "U. Mosel"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1016/S0375-9474(98)00538-7",
    "journal_ref": "Nucl.Phys. A642 (1998) 506-530",
    "title": "Coherent Photoproduction of Eta-Mesons on Spin-Zero Nuclei in a   Relativistic, Non-local Model",
    "url": "https://arxiv.org/abs/nucl-th/9807002"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "1ca333e1-f812-4256-b69e-1ae5826d44f7",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}