{
  "annotation_id": "e4c20d19-792d-4a6c-b1d8-3d203c6945ec",
  "date_created": "2026-03-02T18:00:18.800000Z",
  "date_modified": "2026-03-02T18:00:18.800000Z",
  "file_hash": "d0a8fff4e4126f649fda8699944e3bf9413fa822d9270f160d5994d6db2d5571",
  "private": false,
  "record": {
    "abstract": "We have studied nuclear quadrupole deformation effects in deeply bound pionic\natoms theoretically. We have evaluated the level shifts and widths of the\nhyperfine components using the first order perturbation theory and compared\nthem with the effects of neutron skin. We conclude that the nuclear quadrupole\ndeformation effects for deeply bound $1s$ and $2p$ states are very difficult to\nobserve and that the effects could be observed for $3d$ states. We also\nconclude that the deformation effects are sensitive to the parameters of the\npion-nucleus optical potential.",
    "arxiv_id": "nucl-th/9707004",
    "authors": [
      "N. Nose-Togawa",
      "S. Hirenzaki",
      "K. Kume"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1016/S0375-9474(97)88424-2",
    "journal_ref": "Nucl.Phys. A623 (1997) 548-558",
    "title": "Nuclear Quadrupole Effects in Deeply Bound Pionic Atoms",
    "url": "https://arxiv.org/abs/nucl-th/9707004"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "35bc4c0b-1604-419a-9493-499f8c44a821",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}