{
  "annotation_id": "de75c8f2-f603-4705-9564-f4040d8dcf9f",
  "date_created": "2026-03-02T18:00:22.263000Z",
  "date_modified": "2026-03-02T18:00:22.263000Z",
  "file_hash": "f941aca3bf100a1c2615bfb1ddd59d6b7b94380700c686a56b3e034d1a093dbc",
  "private": false,
  "record": {
    "abstract": "We investigate the energy dependence of the astrophysical $S$ factor for the\nreaction $^7$Be$(p,\\gamma)^8$B, the primary source of high-energy solar\nneutrinos in the solar $pp$ chain. Using simple models we explore the model\ndependence in the extrapolation of the experimental data to the region of\nastrophysical interest near 20 keV. We find that below approximately 400 keV\nthe energy dependence is very well understood and constrained by the data for\nthe elastic scattering of low energy neutrons from $^7$Li. Above 400 keV\nnuclear distortion of the wave function of the incident proton introduces a\nsignificant model dependence. This is particularly important for the s-wave\ncontribution to the $S$ factor. The extracted value of S(0) is $19.0 \\pm 1.0\n\\pm 0.2$~eVb. The first error is experimental while the second is an estimate\nof the theoretical error in the extrapolation.",
    "arxiv_id": "nucl-th/9806067",
    "authors": [
      "B. K. Jennings",
      "S. Karataglidis",
      "T. D. Shoppa"
    ],
    "categories": [
      "nucl-th",
      "astro-ph"
    ],
    "doi": "10.1103/PhysRevC.58.3711",
    "journal_ref": "Phys.Rev.C58:3711-3721,1998",
    "title": "Extrapolation of the astrophysical S factor for ^7Be(p,gamma)^8B to   solar energies",
    "url": "https://arxiv.org/abs/nucl-th/9806067"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e8700440-9469-4d4d-ba2a-5e86001c872e",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}