{
  "annotation_id": "bf7e6c90-74a2-4d97-9c99-e71b23ad0e5d",
  "date_created": "2026-03-02T18:00:15.407000Z",
  "date_modified": "2026-03-02T18:00:15.407000Z",
  "file_hash": "ec5d424dcf3b09ae4ae1ad9b3465041e7590ba9344d4245eef6acf289f116b2c",
  "private": false,
  "record": {
    "abstract": "The S-wave scattering length for eta-N elastic scattering is extracted from\nthe S-wave T-matrix in a three coupled channel, multiresonance unitary model.\nResults are compared with values already reported in literature which are\nobtained applying multichannel, but single resonance -- no background models. A\ndispersion among the previously published values of the real part of the S-wave\nscattering length is observed. We demonstrate that the reported spread\noriginates from the strong sensitivity of the scattering length upon the small\nvariation of the used input resonance parameters. In addition, we show that\neta-N scattering length value obtained in single resonance -- no background\nmodels significantly increases if background term is added in a unitary way. We\nquestion the reliability of previously reported values based only on the single\nresonance -- no background models, and demonstrate that the value of the eta-N\nS-wave scattering length obtained in this publication is much more realistic\nbecause of the multiresonance and unitary approach.",
    "arxiv_id": "nucl-th/9502017",
    "authors": [
      "Mijo Batinic",
      "Ivo Slaus",
      "Alfred Svarc"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevC.52.2188",
    "journal_ref": "Phys.Rev.C52:2188-2194,1995",
    "title": "eta N S-wave scattering length in a three coupled channel,   multiresonance, unitary model",
    "url": "https://arxiv.org/abs/nucl-th/9502017"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c5afcc16-c130-4160-a56c-a9146c7c8a85",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}