{
  "annotation_id": "eb59e483-e4df-425c-baef-74fb6e09ab4d",
  "date_created": "2026-03-02T18:01:14.583000Z",
  "date_modified": "2026-03-02T18:01:14.583000Z",
  "file_hash": "7c20e865a724586fe4006aa022d1f6334b5987aa3d0c304bb077fdfe4051b5fb",
  "private": false,
  "record": {
    "abstract": "We present the relativistic calculation of the hyperfine structure in pionic\nand kaonic atoms. A perturbation method has been applied to the Klein-Gordon\nequation to take into account the relativistic corrections. The perturbation\noperator has been obtained \\textit{via} a multipole expansion of the nuclear\nelectromagnetic potential. The hyperfine structure of pionic and kaonic atoms\nprovide an additional term in the quantum electrodynamics calculation of the\nenergy transition of these systems. Such a correction is required for a recent\nmeasurement of the pion mass.",
    "arxiv_id": "physics/0611263",
    "authors": [
      "Martino Trassinelli",
      "Paul Indelicato"
    ],
    "categories": [
      "physics.atom-ph"
    ],
    "doi": "10.1103/PhysRevA.76.012510",
    "title": "Relativistic calculations of pionic and kaonic atoms hyperfine structure",
    "url": "https://arxiv.org/abs/physics/0611263"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "bd99dae9-36ce-41f1-8b63-96d95e92524c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}