{
  "annotation_id": "2f3883ad-0c2c-4d8a-97c6-b01d212f2dbb",
  "date_created": "2026-03-02T18:00:28.980000Z",
  "date_modified": "2026-03-02T18:00:28.980000Z",
  "file_hash": "9af9cee171ec6ec165eb543f339a9054feabd7381d7ae268c2de948db2bba217",
  "private": false,
  "record": {
    "abstract": "An effective field theory calculation of the n+p-\u003ed+gamma cross section\naccurate to 1% for center of mass energy E up to ~1 MeV is presented. At these\nenergies, which are relevant for big-bang nucleosynthesis, isovector magnetic\ntransitions M1 and isovector electric transitions E1 give the dominant\ncontributions. The M1 amplitude is calculated up to next-to-next-to-leading\norder (NNLO) and the contribution from the associated four-nucleon-one-photon\noperator is determined from the cold neutron capture rate. The E1 amplitude is\ncalculated up to NNNNLO. The four-nucleon-one-photon operator contribution to\nE1 is determined from the related deuteron photodisintegration reaction\ngamma+d-\u003en+p.",
    "arxiv_id": "nucl-th/9911018",
    "authors": [
      "Gautam Rupak"
    ],
    "categories": [
      "nucl-th",
      "astro-ph"
    ],
    "doi": "10.1016/S0375-9474(00)00323-7",
    "journal_ref": "Nucl.Phys. A678 (2000) 405-423",
    "title": "Precision Calculation of n+p-\u003ed+gamma Cross Section for Big-Bang   Nucleosynthesis",
    "url": "https://arxiv.org/abs/nucl-th/9911018"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "3222733f-ef62-454c-a41b-19e85e9e948e",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}