{
  "annotation_id": "6a7c669b-3503-4581-9f84-464205d98f92",
  "date_created": "2026-03-02T18:00:14.941000Z",
  "date_modified": "2026-03-02T18:00:14.941000Z",
  "file_hash": "6599375c08a8496dd46b1fbc6791246a106d1be4b2c725d7a48129d28434dcc5",
  "private": false,
  "record": {
    "abstract": "We use classical/large Nc (number of colors) QCD to study\nnucleon--antinucleon annihilation at rest. We include pion, rho and omega\nfields in the classical dynamics, starting from the nonlinear sigma model. We\nbegin with a spherical blob of pionic matter with zero baryon number and energy\nof twice the nucleon mass. This evolves according to the classical dynamics to\npion and vector meson fields into the radiation zone. The radiation fields are\nquantized using the method of coherent states modified to include isospin and\nfour momentum conservation. Empirical information is extracted from that\ncoherent state. We find good agreement with data for single particle momentum\nand number spectra, and with branching ratios to many annihilation channels.\nAll this emerges with nearly no free parameters.",
    "arxiv_id": "nucl-th/9505021",
    "authors": [
      "Yang Lu",
      "R. D. Amado"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevC.52.2158",
    "journal_ref": "Phys.Rev.C52:2158-2171,1995",
    "title": "Nucleon-Antinucleon Annihilation in Large Nc QCD with rho and omega   Mesons",
    "url": "https://arxiv.org/abs/nucl-th/9505021"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "bfb32dc8-9c49-441d-bc30-1acebadbedc9",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}