{
  "annotation_id": "6c0a2a31-4a99-4652-a5c3-cd7875dbeb6d",
  "date_created": "2026-03-02T18:00:25.535000Z",
  "date_modified": "2026-03-02T18:00:25.535000Z",
  "file_hash": "e71c25287d28fab016e94d9ed07d3c0c8e835191c3746852c9ac6bc7dd216f25",
  "private": false,
  "record": {
    "abstract": "The cross section for n+p -\u003e d+gamma is calculated at energies relevant to\nbig bang nucleosynthesis using the recently developed effective field theory\nthat describes the two-nucleon sector. The E1 amplitude is computed up to NNNLO\nand depends only upon nucleon-nucleon phase shift data. In contrast, the M1\ncontribution is computed up to NLO, and the four-nucleon-one-magnetic-photon\ncounterterm that enters is determined by the cross section for cold neutron\ncapture. The uncertainty in the calculation for nucleon energies up to E ~ 1\nMeV is estimated to be \u003c 4%.",
    "arxiv_id": "nucl-th/9907042",
    "authors": [
      "Jiunn-Wei Chen",
      "Martin J. Savage"
    ],
    "categories": [
      "nucl-th",
      "astro-ph"
    ],
    "doi": "10.1103/PhysRevC.60.065205",
    "journal_ref": "Phys.Rev. C60 (1999) 065205",
    "title": "n+p -\u003e d+gamma for Big-Bang Nucleosynthesis",
    "url": "https://arxiv.org/abs/nucl-th/9907042"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "8279b81e-3a57-495e-8542-50c2b262a870",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}