{
  "annotation_id": "29610e03-cf90-4194-81b7-48646be876e0",
  "date_created": "2026-03-02T18:00:18.191000Z",
  "date_modified": "2026-03-02T18:00:18.191000Z",
  "file_hash": "b4fd09a88e77413cb19546c4e3f56ee2d5f1089f27f55582581099cc5025cc41",
  "private": false,
  "record": {
    "abstract": "We have analyzed the $M_{1+}^{(3/2)}$ and $E_{1+}^{(3/2)}$ multipole\namplitudes of pion photoproduction in the framework of fixed-$t$ dispersion\nrelations. Applying the speed plot technique to our results for these\nmultipoles, we have determined the position and the residues of the $\\Delta$\n(1232) resonance pole. The pole is found at total $c.m.$ energy $W = (1211 -\n50i)$ MeV on the second Riemann sheet, and the ratio of the electric and\nmagnetic residues is $R_{\\Delta} = - 0.035 - 0.046 i$, resulting in an E2/M1\nratio for the \"dressed\" delta resonance of $- 3.5 \\%$.",
    "arxiv_id": "nucl-th/9605008",
    "authors": [
      "O. Hanstein",
      "D. Drechsel",
      "L. Tiator"
    ],
    "categories": [
      "nucl-th",
      "hep-ph"
    ],
    "doi": "10.1016/0370-2693(96)00855-6",
    "journal_ref": "Phys.Lett.B385:45-51,1996",
    "title": "The position and the residues of the delta resonance pole in pion   photoproduction",
    "url": "https://arxiv.org/abs/nucl-th/9605008"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "2605a514-0e84-4b44-a3af-824294e290e3",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}