{
  "annotation_id": "5092f121-eb70-4f59-80d6-40a83e2f04ed",
  "date_created": "2026-03-02T18:00:15.247000Z",
  "date_modified": "2026-03-02T18:00:15.247000Z",
  "file_hash": "2ede1e81c186b9e86f0a6fdd5c337d5e5201f75eb3904b38684e9f987ca6114e",
  "private": false,
  "record": {
    "abstract": "The $SU(3)$ chiral effective lagrangian at next-to-leading order is applied\nto the S-wave meson-baryon interaction in the energy range around the $\\eta N$\nthreshold. Potentials are derived from this lagrangian and used in a coupled\nchannel calculation of the $\\pi N$, $\\eta N$, $K \\Lambda$, $K \\Sigma$ system in\nthe isospin-$1/2$, $l=0$ partial wave. Using the same parameters as obtained\nfrom a fit to the low energy $\\overline{K} N$ data it is found that a\nquasi-bound $K \\Sigma$-state is formed, with properties remarkably similar to\nthe $S_{11}(1535)$ nucleon resonance. In particular, we find a large partial\ndecay width into $\\eta N$ consistent with the empirical data.",
    "arxiv_id": "nucl-th/9507036",
    "authors": [
      "N. Kaiser",
      "P. B. Siegel",
      "W. Weise"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1016/0370-2693(95)01203-3",
    "journal_ref": "Phys.Lett. B362 (1995) 23-28",
    "title": "Chiral Dynamics and the $S_{11}(1535)$ Nucleon Resonance",
    "url": "https://arxiv.org/abs/nucl-th/9507036"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "340eebac-1abf-4c61-9853-37f35fd254fd",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}