{
  "annotation_id": "734536c0-f138-41cd-8f65-47e9e03943ed",
  "date_created": "2026-03-02T18:00:25.831000Z",
  "date_modified": "2026-03-02T18:00:25.831000Z",
  "file_hash": "7e445d37d4e0e16dde0be315b1dd6002eb0d0b2f1c02c0d51a3f4704f271ca4f",
  "private": false,
  "record": {
    "abstract": "Results of a relativistic model for pion- and photon-induced reactions on the\nproton are presented. The model is crossing symmetric and gauge invariant. The\nnucleon resonances P_11 (1440), P_11 (1710), D_13 (1520), S_11 (1535), S_11\n(1650), P_33 (1232), P_33 (1600), S_31 (1620), and D_33 (1700) have been\nincluded explicitly in the calculation. Unitarity within the channel space \\pi\nN + \\gamma N below the two-pion production threshold has been achieved by using\nthe K-matrix approach. Strong and electromagnetic coupling parameters of the N*\nresonances have been determined from a fit to the pion-nucleon phase shifts,\npion-photoproduction multipoles and Compton-scattering cross sections. The\nmodel is shown to describe simultaneously most of the available data. Results\nfor the electric and magnetic polarizabilities of the nucleon are presented.",
    "arxiv_id": "nucl-th/9811042",
    "authors": [
      "A. Yu. Korchin",
      "O. Scholten",
      "R. G. E. Timmermans"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1016/S0370-2693(98)01041-7",
    "journal_ref": "Phys.Lett. B438 (1998) 1-8",
    "title": "Pion and photon couplings of N* resonances from scattering on the proton",
    "url": "https://arxiv.org/abs/nucl-th/9811042"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "a1bc9e12-c1cc-46f9-8f3c-8b28e3616425",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}