{
  "annotation_id": "2b3a94a2-0852-435e-84db-d0a8431efd01",
  "date_created": "2026-03-02T18:00:11.221000Z",
  "date_modified": "2026-03-02T18:00:11.221000Z",
  "file_hash": "31d8f12034044443c2acc856d6b2cc384c962030d350edac48be903f833f808c",
  "private": false,
  "record": {
    "abstract": "In the threshold region, the cross section and the associated overlap\nintegral obey the Wigner threshold law that results in the Wigner-cusp\nphenomenon. Due to flux conservation, a cusp anomaly in one channel manifests\nitself in other open channels, even if their respective thresholds appear at a\ndifferent energy. The shape of a threshold cusp depends on the orbital angular\nmomentum of a scattered particle; hence, studies of Wigner anomalies in weakly\nbound nuclei with several low-lying thresholds can provide valuable\nspectroscopic information. In this work, we investigate the threshold behavior\nof spectroscopic factors in neutron-rich drip-line nuclei using the Gamow Shell\nModel, which takes into account many-body correlations and the continuum\neffects. The presence of threshold anomalies is demonstrated and the\nimplications for spectroscopic factors are discussed.",
    "arxiv_id": "nucl-th/0702021",
    "authors": [
      "N. Michel",
      "W. Nazarewicz",
      "M. Ploszajczak"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevC.75.031301",
    "journal_ref": "Phys.Rev.C75:031301,2007",
    "title": "Threshold Effects in Multi-channel Coupling and Spectroscopic Factors in   Exotic Nuclei",
    "url": "https://arxiv.org/abs/nucl-th/0702021"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "4c20c67d-a132-4f9b-866f-3311bdc52e60",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}