{
  "annotation_id": "731b3405-0458-4dae-89f0-8706d37c65a9",
  "date_created": "2026-03-02T18:00:04.388000Z",
  "date_modified": "2026-03-02T18:00:04.388000Z",
  "file_hash": "bb1641b7ef7e67066193ab588646336123cad397f380646a9099b584f5db762c",
  "private": false,
  "record": {
    "abstract": "We investigate the effect of two-photon exchange processes upon the rms- and\nZemach radii extracted from electron-proton scattering. We find that the\nchanges are small and do not help to explain the discrepancy between\nexperimental and calculated HFS in the hydrogen atom.",
    "arxiv_id": "nucl-th/0508037",
    "authors": [
      "Peter G. Blunden",
      "Ingo Sick"
    ],
    "categories": [
      "nucl-th",
      "physics.atom-ph"
    ],
    "doi": "10.1103/PhysRevC.72.057601",
    "journal_ref": "Phys.Rev.C72:057601,2005",
    "title": "Proton radii and two-photon exchange",
    "url": "https://arxiv.org/abs/nucl-th/0508037"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "74121231-38ee-4156-a624-3a3ce91a2bc6",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}