{
  "annotation_id": "425fc810-2b5d-4c45-a9b1-e8992828f61d",
  "date_created": "2026-03-02T18:00:08.581000Z",
  "date_modified": "2026-03-02T18:00:08.581000Z",
  "file_hash": "946e6698d63641fffec483dc0bf80b6ec2d504715810386c6d522f3ca262447f",
  "private": false,
  "record": {
    "abstract": "Predictions of the existence of well-defined deeply bound pionic atom states\nfor heavy nuclei and the eventual observation of such states by the (d,3He)\nreaction have revived interest in the pion-nucleus interaction at threshold and\nin its relation to the corresponding pion-nucleon interaction. Explanation of\nthe \u0027anomalous\u0027 s-wave repulsion in terms of partial restoration of chiral\nsymmetry and/or in terms of energy-dependence effects have been tested in\nglobal fits to pionic atom data and in a recent dedicated elastic scattering\nexperiment. The role of neutron density distributions in this context is\ndiscussed in detail for the first time.",
    "arxiv_id": "nucl-th/0607049",
    "authors": [
      "E. Friedman"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1142/S0217751X07035355",
    "journal_ref": "Int.J.Mod.Phys.A22:213-220,2007",
    "title": "Overview of pion-nucleus interaction at low energies",
    "url": "https://arxiv.org/abs/nucl-th/0607049"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "285f671c-2749-4e6d-9fe0-d4766a1fe58d",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}