{
  "annotation_id": "26ed92c8-f88b-4e77-9712-af2c6ae44859",
  "date_created": "2026-03-02T18:00:08.181000Z",
  "date_modified": "2026-03-02T18:00:08.181000Z",
  "file_hash": "81c83743d0c1850bda9b7d155f7c76fb9c7dd56d86f0d78fad92d343970a79b1",
  "private": false,
  "record": {
    "abstract": "The total cross section for radiative neutron capture on a proton, $np \\to d\n\\gamma$, is evaluated at big bang nucleosynthesis (BBN) energies. The\nelectromagnetic transition amplitudes are calculated up to next-to leading\norder within the framework of pionless effective field theory with dibaryon\nfields. We also calculate the $d\\gamma\\to np$ cross section and the photon\nanalyzing power for the $d\\vec{\\gamma}\\to np$ process from the amplitudes. The\nvalues of low energy constants that appear in the amplitudes are estimated by a\nMarkov Chain Monte Carlo analysis using the relevant low energy experimental\ndata. Our result agrees well with those of other theoretical calculations\nexcept for the $np\\to d\\gamma$ cross section at some energies estimated by an\nR-matrix analysis. We also study the uncertainties in our estimation of the\n$np\\to d\\gamma$ cross section at relevant BBN energies and find that the\nestimated cross section is reliable to within $\\sim$1% error.",
    "arxiv_id": "nucl-th/0511074",
    "authors": [
      "S. Ando",
      "R. H. Cyburt",
      "S. W. Hong",
      "C. H. Hyun"
    ],
    "categories": [
      "nucl-th",
      "astro-ph",
      "hep-ph",
      "nucl-ex"
    ],
    "doi": "10.1103/PhysRevC.74.025809",
    "journal_ref": "Phys.Rev. C74 (2006) 025809",
    "title": "Radiative neutron capture on a proton at BBN energies",
    "url": "https://arxiv.org/abs/nucl-th/0511074"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "8ce227ef-d523-449b-9983-d8b51a33a791",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}