{
  "annotation_id": "582f05ff-3edf-494f-8cb1-30851707ba8d",
  "date_created": "2026-03-02T18:00:22.458000Z",
  "date_modified": "2026-03-02T18:00:22.458000Z",
  "file_hash": "f2d5451763c2ea231f15456405ab68867c0e6b0c2092ed36e7aaa9a2b395ae08",
  "private": false,
  "record": {
    "abstract": "We introduce coupled channels of Bethe-Salpeter mesons both in the boundstate\nequation for mesons and in the mass gap equation for chiral symmetry.\nConsistency is insured by the Ward Identities for axial currents, which\npreserve the Goldstone boson nature of the pion and prevents a systematic shift\nof the hadron spectrum. We study the decay of a scalar meson coupled to a pair\nof pseudoscalars. We also show that coupled channels reduce the breaking of\nchiral symmetry, with the same Feynman diagrams that appear in the coupling of\na scalar meson to a pair of pseudoscalar mesons. Exact calculations are\nperformed in a particular confining quark model, where we find that the\ngroundstate $I=0, ^3P_0 q \\bar q$ meson is the f_0(980) with a partial decay\nwidth of 40MeV. We also find a 30% reduction of the chiral condensate due to\ncoupled channels.",
    "arxiv_id": "nucl-th/9802058",
    "authors": [
      "Pedro Bicudo"
    ],
    "categories": [
      "nucl-th",
      "cond-mat",
      "hep-ph"
    ],
    "doi": "10.1103/PhysRevC.60.035209",
    "journal_ref": "Phys.Rev.C60:035209,1999",
    "title": "A new Perspective on the Scalar meson Puzzle, from Spontaneous Chiral   Symmetry Breaking Beyond BCS",
    "url": "https://arxiv.org/abs/nucl-th/9802058"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "56c4e803-107b-4c61-889f-4bcbadcdefcf",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}