{
  "annotation_id": "ee89b139-427d-4568-afc8-5992584655a0",
  "date_created": "2026-03-02T18:00:11.010000Z",
  "date_modified": "2026-03-02T18:00:11.010000Z",
  "file_hash": "1509870eb209b6d7c388d6fc8658764654d4b25086277e94c70337be904b18b9",
  "private": false,
  "record": {
    "abstract": "We investigate theoretical approaches to pion--nucleus elastic scattering at\nhigh energies (300 $\\le T_\\pi \\le$ 1 GeV). A ``model--exact\u0027\u0027 calculation of\nthe lowest--order microscopic optical model, carried out in momentum space and\nincluding the full Fermi averaging integration, a realistic off--shell\npion--nucleon scattering amplitude and fully covariant kinematics, is used to\ncalibrate a much simpler theory. The simpler theory utilizes a local optical\npotential with an eikonal propagator and includes the Coulomb interaction and\nthe first Wallace correction, both of which are found to be important.\nComparisons of differential cross sections out to beyond the second minimum are\nmade for light and heavy nuclei. Particularly for nuclei as heavy as $^{40}$Ca,\nthe eikonal theory is found to be an excellent approximation to the full\ntheory. (8 Figures available from authors)",
    "arxiv_id": "nucl-th/9212012",
    "authors": [
      "C. M. Chen",
      "D. J. Ernst",
      "M. B. Johnson"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevC.48.841",
    "title": "High-energy pion-nucleus elastic scattering",
    "url": "https://arxiv.org/abs/nucl-th/9212012"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c34fb2bd-1941-4d05-8eea-497948add0fd",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}