{
  "annotation_id": "b2c94c39-e0bb-48f4-8638-2ea508e31cd8",
  "date_created": "2026-03-02T18:00:00.332000Z",
  "date_modified": "2026-03-02T18:00:00.332000Z",
  "file_hash": "9b97db85fb259fb560991d7319a0730e6fcc0d437a49f413f4bcfe0e0bfa76c4",
  "private": false,
  "record": {
    "abstract": "R-matrix analyses of the 12C + alpha elastic-scattering phase shifts deduced\nfrom a recent high-precision measurement of the differential cross sections are\nperformed. The l=0 phase shifts constrain the R-matrix radius a around 5.85 fm,\nwhile the l=2 phase shifts lead to a strong constrain neither on a nor on the\nasymptotic normalization constant C of the 2+ subthreshold state (except for a\nloose upper limit). This contradicts previous R-matrix analyses of the 12C +\nalpha elastic scattering and explains the incompatibility between values of C\nobtained in these analyses.",
    "arxiv_id": "nucl-th/0401048",
    "authors": [
      "Jean-Marc Sparenberg"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1016/j.nuclphysa.2004.04.077",
    "journal_ref": "Nucl.Phys. A738 (2004) 416-420",
    "title": "Deducing the asymptotic normalization constant of the 2+ subthreshold   state in 16O from 12C + alpha elastic scattering",
    "url": "https://arxiv.org/abs/nucl-th/0401048"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "d449f96b-d70c-448b-b554-c5df129507eb",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}