{
  "annotation_id": "c4ab5c26-4f0b-46a0-bd03-7db1a4094b02",
  "date_created": "2026-03-02T18:00:22.458000Z",
  "date_modified": "2026-03-02T18:00:22.458000Z",
  "file_hash": "20d4612d2feae90adcfbd2ffb4a017c64f7362d7954ce8f5a0ea0e817d2fc257",
  "private": false,
  "record": {
    "abstract": "We have extended a model for the $\\gamma N\\to \\pi\\pi N$ reaction to virtual\nphotons and selected the diagrams which have a $\\Delta$ in the final state.\nWith this model we have evaluated cross sections for the virtual photon cross\nsection as a function of $Q^2$ for different energies. The agreement found with\nthe $\\gamma_v p\\to\\Delta^0\\pi^+$ and $\\gamma_v p\\to\\Delta^{++}\\pi^-$ reactions\nis good. The sensitivity of the results to $N\\Delta$ transition form factors is\nalso studied. The present reaction, selecting a particular final state, is an\nextra test for models of the $\\gamma_{v} N\\to \\pi\\pi N$ amplitude. The\nexperimental measurement of the different isospin channels for this reaction\nare encouraged as a means to unravel the dynamics of the two pions\nphotoproduction processes.",
    "arxiv_id": "nucl-th/9804006",
    "authors": [
      "J. C. Nacher",
      "E. Oset"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1016/S0375-9474(00)00165-2",
    "journal_ref": "Nucl.Phys. A674 (2000) 205-228",
    "title": "A model for pion Delta electroproduction on the proton",
    "url": "https://arxiv.org/abs/nucl-th/9804006"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "bdf397a8-ece1-489a-9338-0f11c2cd7d90",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}