{
  "annotation_id": "e174a246-b121-483a-a8de-a9e55035b35a",
  "date_created": "2026-03-02T18:00:24.521000Z",
  "date_modified": "2026-03-02T18:00:24.521000Z",
  "file_hash": "90bfb9926bc27a378ef8b3cfa45ee173c9ebbe1d3f5f517d8f53adf71293b128",
  "private": false,
  "record": {
    "abstract": "The Compton scattering on a charged pion and the process \\gamma\\gamma \\to\n\\pi^0\\pi^0 are studied using the dispersion relations. Unknown parameters of\nthe S-wave \\pi\\pi interaction, represented as a board Breit-Wignar resonance,\nand a sum and a difference of the \\pi^0 meson polarizabilities are found from a\nfit to the experimental data for the process \\gamma+\\gamma \\to \\pi^0+\\pi^0.\nThis fit gives \\alpha+\\beta=0.98\\pm 0.03 and \\alpha-\\beta=-1.6\\pm 2.2. The\nfound parameters of the S-wave \\pi\\pi interaction are used for the calculation\nof the cross section of the Compton scattering on \\pi^{\\pm} meson. The analysis\nof the obtained results shows that the experimental data for the elastic\n\\gamma\\pi scattering in the energy region up to 1 GeV together with the data\nfor the process \\gamma+\\gamma \\to \\pi^0+\\pi^0 could be used both for a\ndetermination of the pion polarizability values with quite high accuracy and\nfor study of the S-wave \\pi\\pi interaction.",
    "arxiv_id": "nucl-th/9810074",
    "authors": [
      "L. V. Fil\u0027kov",
      "V. L. Kashevarov"
    ],
    "categories": [
      "nucl-th",
      "hep-ph"
    ],
    "doi": "10.1007/s100500050287",
    "journal_ref": "Eur.Phys.J.A5:285-292,1999",
    "title": "Compton Scattering on the Charged Pion and the Process \\gamma\\gamma \\to   \\pi^0 \\pi^0",
    "url": "https://arxiv.org/abs/nucl-th/9810074"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "71050e36-6de0-46c2-9416-94c35fbdaa4f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}