{
  "annotation_id": "9c841937-a9b5-4cb7-b172-bb1397f22501",
  "date_created": "2026-03-02T18:00:21.721000Z",
  "date_modified": "2026-03-02T18:00:21.721000Z",
  "file_hash": "9c062f7f99b43df2be4c47cd7656a57ee4bb30273399c235b907a6cf113e6bf8",
  "private": false,
  "record": {
    "abstract": "The recent experimental data obtained by the OBELIX group on total $\\bar{p}p$\nannihilation cross section are analysed; the low energy spin averaged\nparameters of the $\\bar{p}p$ scattering amplitude (the imaginary parts of the\nS-wave scattering length and P-wave scattering volume) are extracted from the\ndata. Their values are found to be equal to $Im a_{sc} = - 0.69 \\pm 0.01 (stat)\n\\pm 0.03 (sys) fm, Im A_{sc} = - 0.76 \\pm 0.05 (stat) \\pm 0.04 (sys) fm^3$. The\nresults are in very good agreement with existing atomic data.",
    "arxiv_id": "nucl-th/9806032",
    "authors": [
      "J. Carbonell",
      "K. V. Protasov",
      "A. Zenoni"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1016/S0370-2693(97)00190-1",
    "journal_ref": "Phys.Lett. B397 (1997) 345-349",
    "title": "\\bar{p}p low energy parameters from annihilation cross section data",
    "url": "https://arxiv.org/abs/nucl-th/9806032"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "d78d83ab-0bbb-4ade-a84c-88f97ac6c37a",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}