{
  "annotation_id": "53df583b-5624-4f31-85d6-944e362c54b6",
  "date_created": "2026-03-02T18:00:22.405000Z",
  "date_modified": "2026-03-02T18:00:22.405000Z",
  "file_hash": "1a5fd05bd8e083df6f753a0e6e487112cbed04f737434f7eb4560506615ade7d",
  "private": false,
  "record": {
    "abstract": "A relativistic and non-local model for the coherent photoproduction of pions\non spin-zero nuclei is presented. The production operator is derived from an\neffective Lagrangian model that contains all the degrees of freedom known to\ncontribute to the elementary process. Using the framework of DWIA, the matrix\nelements of this operator are evaluated using relativistic bound state wave\nfunctions. Final state interactions are accounted for via a pion-nucleus\noptical potential. The effects of in-medium modifications of the production\noperator are discussed. We give results for $^{12}C$ and $^{40}Ca$, and compare\nour calculations to the data of the A2 collaboration at MAMI.",
    "arxiv_id": "nucl-th/9803009",
    "authors": [
      "W. Peters",
      "H. Lenske",
      "U. Mosel"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1016/S0375-9474(98)00446-1",
    "journal_ref": "Nucl.Phys. A640 (1998) 89-113",
    "title": "Coherent Photoproduction of Pions on Spin-Zero Nuclei in a relativistic,   non-local Model",
    "url": "https://arxiv.org/abs/nucl-th/9803009"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "a7b0cb64-1305-4f4d-9757-6e2bcfa1c9c5",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}