{
  "annotation_id": "4bfcb060-2f53-4e1f-87e7-8efce98a1a3e",
  "date_created": "2026-03-02T18:00:11.614000Z",
  "date_modified": "2026-03-02T18:00:11.614000Z",
  "file_hash": "9ac23c9e1e4c8de0d5cc96bc5424d19c8e97549830f0b5151b625fca914b7db4",
  "private": false,
  "record": {
    "abstract": "A meson-exchange model for pion-nucleon scattering was previously constructed\nusing a three-dimensional reduction scheme of the Bethe-Salpeter equation for a\nmodel Lagrangian involving \\pi, \\eta, N, \\Delta, \\rho, and \\sigma fields. We\nthereby extend our previous work by including the \\eta N channel and all the\n\\pi N resonances with masses ~ 2 GeV, up to the F waves. The effects of the\n\\pi\\pi N channels are taken into account by introducing an effective width in\nthe resonance propagators. The extended model gives an excellent fit to both\n\\pi N phase shifts and inelasticity parameters in all channels up to the F\nwaves and for energies below 2 GeV. We present a new scheme to extract the\nproperties of overlapping resonances. The predicted values for the resonance\nmasses and widths as well as resonance pole positions and residues are compared\nto the listing of the Particle Data Group.",
    "arxiv_id": "nucl-th/0703096",
    "authors": [
      "Guan Yeu Chen",
      "S. S. Kamalov",
      "Shin Nan Yang",
      "D. Drechsel",
      "L. Tiator"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevC.76.035206",
    "journal_ref": "Phys.Rev.C76:035206,2007",
    "title": "Nucleon resonances in \\pi N scattering up to energies \\sqrt(s) \u003c 2.0 GeV",
    "url": "https://arxiv.org/abs/nucl-th/0703096"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "f7be092a-c40b-4936-b27d-a00cdbc9685b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}