{
  "annotation_id": "e440cb0a-d595-462e-bd6f-5f48823089bf",
  "date_created": "2026-03-02T18:00:22.314000Z",
  "date_modified": "2026-03-02T18:00:22.314000Z",
  "file_hash": "bceb33c006596db7f86b34a9d54a3571fca4089fdd411847af20bd5c91d1b36a",
  "private": false,
  "record": {
    "abstract": "The sensitivity of nucleon-nucleus elastic scattering observables to the\noff-shell structure of nucleon-nucleon t-matrices, derived from realistic NN\npotentials, is investigated within the context of a full-folding model based on\nthe impulse approximation. Our study uses recently developed NN potential\nmodels, which describe a subset of the NN data base with a $\\chi^2$ per datum\n$\\sim$1, which means that the NN t-matrices are essentially on-shell\nequivalent. We calculate proton-nucleus elastic scattering observables for\n$^{16}$O, $^{40}$Ca, and $^{208}$Pb between 100 and 200 MeV laboratory energy.\nWe find that the elastic scattering observables are insensitive to off-shell\ndifferences of the employed NN t-matrices. A more detailed investigation of the\nscattering equation and the optical potential as given in a factorized\napproximation reveals that the elastic scattering observables do not sample the\nNN t-matrices very far off-shell where they exhibit differences.",
    "arxiv_id": "nucl-th/9712001",
    "authors": [
      "S. P. Weppner",
      "Ch. Elster",
      "D. Hueber"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevC.57.1378",
    "journal_ref": "Phys.Rev.C57:1378-1385,1998",
    "title": "Off-Shell Structures of Nucleon-Nucleon t-matrices and their Influence   on Nucleon-Nucleus Elastic Scattering Observables",
    "url": "https://arxiv.org/abs/nucl-th/9712001"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "321c73c0-cfde-48ea-8d00-27b23f21a9ec",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}