{
  "annotation_id": "0b4dc1cf-2565-40b4-9d0c-8979a612b370",
  "date_created": "2026-03-02T18:00:29.334000Z",
  "date_modified": "2026-03-02T18:00:29.334000Z",
  "file_hash": "ffb116121a65667a9322ad8e0ceff5d9dcfea019ec4a9dceb563957b9fb80c89",
  "private": false,
  "record": {
    "abstract": "The recent experimental data obtained by the OBELIX group on $\\bar{p}$D and\n$\\bar{p}^4$He total annihilation cross sections are analyzed. The combined\nanalysis of these data with existing antiprotonic atom data allows, for the\nfirst time, the imaginary parts of the S-wave scattering lengths for the two\nnuclei to be extracted. The obtained values are: $Im a^{sc}_0 = [- 0.62 \\pm\n0.02 ({stat}) \\pm 0.04 ({sys})] fm$ for $\\bar{p}$D and $Im a^{sc}_0 = [-\n0.36\\pm 0.03({stat})^{+0.19}_{-0.11}({sys})] fm$ for $\\bar{p}^4$He. This\nanalysis indicates an unexpected behaviour of the imaginary part of the\n$\\bar{p}$-nucleus S-wave scattering length as a function of the atomic weight\nA: $|Im a^{sc}_0|$ ($\\bar{p}$p) \u003e $|Im a^{sc}_0|$ ($\\bar{p}$D) \u003e $|Im\na^{sc}_0|$ ($\\bar{p}^4$He).",
    "arxiv_id": "nucl-th/9911005",
    "authors": [
      "K. V. Protasov",
      "G. Bonomi",
      "E. Lodi Rizzini",
      "A. Zenoni"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1007/s100500050413",
    "journal_ref": "Eur.Phys.J. A7 (2000) 429-434",
    "title": "Antiproton annihilation on light nuclei at very low energies",
    "url": "https://arxiv.org/abs/nucl-th/9911005"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "1428fd6e-5337-46dd-af9f-0842af31a4e3",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}