{
  "annotation_id": "c173f2e9-2b32-4ffe-a012-aa6504c94303",
  "date_created": "2026-03-02T18:00:25.134000Z",
  "date_modified": "2026-03-02T18:00:25.134000Z",
  "file_hash": "ff5fd9b7dfbe758a6f0fd6c4ea955cb1935e0a1765706f1c07ac9b27c0b0cc79",
  "private": false,
  "record": {
    "abstract": "We explore the role of a scalar meson exchange interaction between quarks in\na semirelativistic constituent quark model where the quarks are also subject to\na linear confinement. We search for a variational solution and study how the\nspectrum evolves when the strength of the scalar meson exchange increases. Our\nresults have good implications on the description of the low-lying baryon\nmasses, especially on the long-standing problem of the relative position of the\nfirst positive-parity (Roper resonance) and the first orbitally excited states.",
    "arxiv_id": "nucl-th/9905015",
    "authors": [
      "P. Stassart",
      "Fl. Stancu",
      "J. -M. Richard"
    ],
    "categories": [
      "nucl-th",
      "hep-ph"
    ],
    "doi": "10.1088/0954-3899/26/4/306",
    "journal_ref": "J.Phys.G26:397-403,2000",
    "title": "Scalar meson exchange and the baryon spectra",
    "url": "https://arxiv.org/abs/nucl-th/9905015"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "5ea9ab93-cf71-4187-8664-6f7f8e7ce6fd",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}