{
  "annotation_id": "af5d576d-817e-42f7-ac8e-19932583241b",
  "date_created": "2026-03-02T18:00:25.433000Z",
  "date_modified": "2026-03-02T18:00:25.433000Z",
  "file_hash": "9ffabc8b008743b38144e2363e6e2e96b9cac6d321f305001dd83374df77151f",
  "private": false,
  "record": {
    "abstract": "The recent TRIUMF experiment for $\\mu^- p \\to n \\nu_{\\mu} \\gamma$ gave a\nsurprising result that the induced pseudoscalar coupling constant $g_P$ was\nlarger than the value obtained from $\\mu^- p \\to n \\nu_{\\mu}$ experiment as\nmuch as 44 %. Reexamining contribution of the axial vector current, we found an\nadditional term to the matrix element of Beder and Fearing which was used to\nextract the $g_P$ value from the measured photon energy spectrum. This\nadditional term plays a key role to restore the reliability of $g_P (- 0.88\nm_{\\mu}^2) = 6.77 g_A (0)$.",
    "arxiv_id": "nucl-th/9811009",
    "authors": [
      "Il-Tong Cheon",
      "Myung Ki Cheoun"
    ],
    "categories": [
      "nucl-th"
    ],
    "title": "Induced Pseudoscalar Coupling Constant",
    "url": "https://arxiv.org/abs/nucl-th/9811009"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "a50fb9e8-c0b7-4db8-b1f3-1439916d55a6",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}