{
  "annotation_id": "0a0f3e1c-d238-439d-8546-38aa9e1db60a",
  "date_created": "2026-03-02T18:00:18.343000Z",
  "date_modified": "2026-03-02T18:00:18.343000Z",
  "file_hash": "4d7de696f2560ec94594b5576185f30c198084c21bc2376d983de721d1adbdb6",
  "private": false,
  "record": {
    "abstract": "The contribution of the $\\Delta$(1232) isobar to the electromagnetic current\nof the two-nucleon system and its role in ($\\gamma$,NN) processes is\ninvestigated. The difference between the genuine $\\Delta$-excitation current\nand that part of the current connected to the deexcitation of a preformed\n$\\Delta$ in the target nucleus is stressed. The latter cannot lead to a\nresonant behaviour of matrix elements for energies in the $\\Delta$ region. The\nreaction $^{16}O(\\gamma,pp)^{14}C$, where the $\\Delta$ contribution is dominant\nat intermediate energies, is considered. The large variations found in the\ncross sections for different treatments stress the need for a proper treatment\nof the $\\Delta$ current for a clear understanding of the reaction mechanism of\ntwo-nucleon emission processes.",
    "arxiv_id": "nucl-th/9702031",
    "authors": [
      "C. Giusti",
      "F. D. Pacati",
      "H. Arenhoevel",
      "P. Wilhelm"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1007/s002180050428",
    "journal_ref": "Z.Phys. A359 (1997) 467-470",
    "title": "Treatment of the $\\Delta$ current in electromagnetic two-nucleon   knockout reactions",
    "url": "https://arxiv.org/abs/nucl-th/9702031"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "a003f08d-59aa-4e86-a885-13680ed0bcaa",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}