{
  "annotation_id": "c6ffb0c4-388b-4c4c-885f-86b4a9a569eb",
  "date_created": "2026-03-02T18:00:11.990000Z",
  "date_modified": "2026-03-02T18:00:11.990000Z",
  "file_hash": "37adefa4eea6ccf99ebee224c902c22528f40a3d936fe1465413bd008db57ffe",
  "private": false,
  "record": {
    "abstract": "Calculations have been performed for the $^{16}$O($\\gamma$,pn) and the\n$^{16}$O($\\gamma$,pp) reaction in the photon-energy range $E_{\\gamma}$ = 60-300\nMeV. Besides the contribution from the more common photoabsorption on the\npionic degrees of freedom, we have investigated the influence of heavier meson\nexchange ($\\rho, \\sigma, \\omega$) and intermediate $\\Delta$ creation with $\\pi$\nand $\\rho$ exchange. Whereas the $\\pi$ meson is found to set the main trends,\nthe $\\rho$ meson is found not to be discardable in a theoretical description of\nthe ($\\gamma$,pn) reaction. The incorporation of an energy dependence and a\ndecay width in the $\\Delta$ propagator is observed to be essential in order to\narrive at a more realistic description of ($\\gamma$,NN) reactions at higher\nphoton energies.",
    "arxiv_id": "nucl-th/9307002",
    "authors": [
      "L. Machenil",
      "M. Vanderhaeghen",
      "J. Ryckebusch",
      "M. Waroquier"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1016/0370-2693(93)90650-7",
    "journal_ref": "Phys.Lett. B316 (1993) 17-22",
    "title": "Absorption mechanisms in photon induced two-body knockout",
    "url": "https://arxiv.org/abs/nucl-th/9307002"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "895406fb-86e8-4483-9dbb-de0f2dc75de4",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}