{
  "annotation_id": "0abdea90-631c-44c1-a9d1-60afa9d1156e",
  "date_created": "2026-03-02T18:00:01.484000Z",
  "date_modified": "2026-03-02T18:00:01.484000Z",
  "file_hash": "4b679c1a955c96a0528d8c81bc27510c419012e261e538dbfe7465fc64eee45f",
  "private": false,
  "record": {
    "abstract": "Relativistic effects in a three-body calculation of the $np\\to\\eta d$ process\nare considered. Relativistic effects on the range and strength of the pion\nexchange contribution to the reaction mechanism may be large, but boost effects\nof the two-body interactions are negligible. The relativistic calculation\nconfirms previous non-relativistic results, showing that the shape of the cross\nsection near threshold is essentially determined by the $\\eta d$ final-state\ninteraction alone. As for the region away from threshold, the relativistic pion\nexchange contribution is seen to dominate the other mechanisms of the reaction.\nIt turns out that, within the relativistic reaction model, the $np\\to\\eta d$\nexperimental data excludes large values for the real part of the $\\eta N$\nscattering length.",
    "arxiv_id": "nucl-th/0406070",
    "authors": [
      "H. Garcilazo M. T. Pena"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevC.72.014003",
    "journal_ref": "Phys.Rev. C72 (2005) 014003",
    "title": "Relativistic description of the np to eta d reaction near threshold",
    "url": "https://arxiv.org/abs/nucl-th/0406070"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ccdfbc29-1ce8-42a2-9783-daa685943ee9",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}