{
  "id": "nucl-th/0702021",
  "version": "v2",
  "published": "2007-02-07T04:56:13.000Z",
  "updated": "2007-02-08T08:22:21.000Z",
  "title": "Threshold Effects in Multi-channel Coupling and Spectroscopic Factors in Exotic Nuclei",
  "authors": [
    "N. Michel",
    "W. Nazarewicz",
    "M. Ploszajczak"
  ],
  "comment": "Accepted in Physical Review C Figure corrected",
  "journal": "Phys.Rev.C75:031301,2007",
  "doi": "10.1103/PhysRevC.75.031301",
  "categories": [
    "nucl-th"
  ],
  "abstract": "In the threshold region, the cross section and the associated overlap integral obey the Wigner threshold law that results in the Wigner-cusp phenomenon. Due to flux conservation, a cusp anomaly in one channel manifests itself in other open channels, even if their respective thresholds appear at a different energy. The shape of a threshold cusp depends on the orbital angular momentum of a scattered particle; hence, studies of Wigner anomalies in weakly bound nuclei with several low-lying thresholds can provide valuable spectroscopic information. In this work, we investigate the threshold behavior of spectroscopic factors in neutron-rich drip-line nuclei using the Gamow Shell Model, which takes into account many-body correlations and the continuum effects. The presence of threshold anomalies is demonstrated and the implications for spectroscopic factors are discussed.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2007-02-08T08:22:21.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "21.10.Jx",
      "03.65.Nk",
      "24.10.Cn",
      "21.60.Cs"
    ],
    "keywords": [
      "spectroscopic factors",
      "threshold effects",
      "exotic nuclei",
      "multi-channel coupling",
      "wigner threshold law"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. C"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 744113
    }
  }
}