{
  "annotation_id": "3ff1c052-de15-46c2-83c1-488c38eeb240",
  "date_created": "2026-03-02T18:00:25.219000Z",
  "date_modified": "2026-03-02T18:00:25.219000Z",
  "file_hash": "c13c4030cbc1d0f5707771dc60c0958dca75d8d5f94aba750f7d7b773e0cd575",
  "private": false,
  "record": {
    "abstract": "We analyze the total cross section data for $pp \\to pp\\omega$ near threshold\nmeasured recently at SATURNE. Using an effective range approximation for the\non-shell $pp$ S-wave final state interaction we extract from these data the\nmodulus $|\\Omega| = 0.53$ fm$^4$ of the threshold transition amplitude\n$\\Omega$. We present a calculation of various (tree-level) meson exchange\ndiagrams contributing to $\\Omega$. It is essential that $\\omega$-emission from\nthe anomalous $\\omega\\rho\\pi$-vertex interferes destructively with\n$\\omega$-emission from the proton lines. The contribution of scalar\n$\\sigma$-meson exchange to $\\Omega$ turns out to be negligibly small. Without\nintroducing off-shell meson-nucleon form factors the experimental value\n$|\\Omega|=0.53$ fm$^4$ can be reproduced with an $\\omega N$-coupling constant\nof $g_{\\omega N}=10.7$. The results of the present approach agree qualitatively\nwith the J\\\"ulich model. We also perform a combined analysis of the reactions\n$pp\\to pp\\pi^0, pn\\pi^+, pp\\eta, pp\\omega$ and $pn\\to pn\\eta$ near threshold.",
    "arxiv_id": "nucl-th/9907114",
    "authors": [
      "N. Kaiser"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevC.60.057001",
    "journal_ref": "Phys.Rev. C60 (1999) 057001",
    "title": "$pp\\to pp\\omega$ reaction near threshold",
    "url": "https://arxiv.org/abs/nucl-th/9907114"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "58861f2e-1405-455b-aab5-197082020daa",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}