{
  "annotation_id": "69b317c5-a77b-461e-b1e5-e0a981337399",
  "date_created": "2026-03-02T18:00:14.427000Z",
  "date_modified": "2026-03-02T18:00:14.427000Z",
  "file_hash": "4466c3375ae65db461988505e7e9a3f49b7007017513f8dc5ac3f33d3580885a",
  "private": false,
  "record": {
    "abstract": "We study the contribution of two-body meson-exchange processes to axial\ncharge transitions for nuclei in the lead, tin and oxygen regions. We conduct\ncalculations in the Dirac-Hartree (the Walecka model) and the relativistic\nHartree (where the full one-nucleon-loop effects are included) approximations.\nWe present results indicating that one- and two-body processes enhance the\nmatrix elements of the axial-charge operator by some (100+-20)% in all three\nregions studied. This agrees well with the fit of eighteen first-forbidden\nbeta-decay transitions conducted by Warburton in the lead region. We also\ndiscuss some sensitivities present in the calculation.",
    "arxiv_id": "nucl-th/9504009",
    "authors": [
      "E. D. Izquierdo",
      "G. Barenboim",
      "A. O. Gattone"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1016/S0375-9474(96)00276-X",
    "journal_ref": "Nucl.Phys. A609 (1996) 437-453",
    "title": "Relativistic Two-Body Processes in Axial-Charge Transitions",
    "url": "https://arxiv.org/abs/nucl-th/9504009"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e95ae694-b4dd-4c17-ac58-a3f6abea9e26",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}