{
  "annotation_id": "bb66dc5a-cf09-4f42-80f6-229e1c1e953b",
  "date_created": "2026-03-02T18:00:25.432000Z",
  "date_modified": "2026-03-02T18:00:25.432000Z",
  "file_hash": "e015f0be50548222f4c5e6087a0200259ead9af170da20edd9024f01171d2d9a",
  "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 in\nelectromagnetic interaction, we found an additional term to the matrix element\nwhich was used to extract the $g_P$ value from the measured photon energy\nspectrum. This additional term, which plays a key role to restore the\nreliability of $g_P (- 0.88 m_{\\mu}^2) = 6.77 g_A (0)$, is shown to affect the\n$g_P$ quenching problems in nucleus.",
    "arxiv_id": "nucl-th/9811025",
    "authors": [
      "Myung Ki Cheoun",
      "K. S. Kim",
      "B. S. Han",
      "Il-Tong Cheon"
    ],
    "categories": [
      "nucl-th"
    ],
    "title": "Radiative Muon Capture and Induced Pseudoscalar Coupling Constant in   Nuclear Matter",
    "url": "https://arxiv.org/abs/nucl-th/9811025"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9773f46b-52dc-4e1e-9df4-87f91d98cc7a",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}