{
  "annotation_id": "15110c32-c8a7-40b3-b4f9-0f925d2e535c",
  "date_created": "2026-03-02T18:01:14.525000Z",
  "date_modified": "2026-03-02T18:01:14.525000Z",
  "file_hash": "a6e28b5d7b0f8085def3cf612a9481d58c2af09e8b3e7cf79573e4e622a6a916",
  "private": false,
  "record": {
    "abstract": "We consider the proton structure corrections to hydrogen ground-state\nhyperfine structure, focusing on a state-of-the-art evaluation of the inelastic\nnucleon corrections--the polarizability corrections--using analytic fits to the\nmost recent data. We find a value for the fractional correction Delta_{pol} of\n1.3 \\pm 0.3 ppm. This is 1--2 ppm smaller than the value of Delta_{pol}$ one\nwould deduce using hyperfine splitting data and elastic proton structure\ncorrections obtained from modern form factor fits. In addition, we discuss the\nderivations of the relevant formulas, paying attention to lepton mass effects\nand to questions surrounding the use of unsubtracted dispersion relations.",
    "arxiv_id": "physics/0610289",
    "authors": [
      "Carl E. Carlson"
    ],
    "categories": [
      "physics.atom-ph",
      "hep-ph",
      "nucl-th"
    ],
    "doi": "10.1139/P07-026",
    "title": "New Evaluation of Proton Structure Corrections to Hydrogen Hyperfine   Splitting",
    "url": "https://arxiv.org/abs/physics/0610289"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ca523082-de5c-4b0a-8929-f2003e38fa92",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}