{
  "annotation_id": "19303f6f-cf7b-4f72-813e-5e39778136f5",
  "date_created": "2026-03-02T18:00:07.758000Z",
  "date_modified": "2026-03-02T18:00:07.758000Z",
  "file_hash": "4f7c47be5f8248da4d90e2095b74f04227fb93a2228b62e67b4a3d9eebdb6554",
  "private": false,
  "record": {
    "abstract": "Three-body continuum states are investigated with the hyperspherical method\non a Lagrange mesh. The $R$-matrix theory is used to treat the asymptotic\nbehaviour of scattering wave functions. The formalism is developed for neutral\nas well as for charged systems. We point out some specificities of continuum\nstates in the hyperspherical method. The collision matrix can be determined\nwith a good accuracy by using propagation techniques. The method is applied to\nthe $^6$He (=$\\alpha$+n+n) and $^6$Be (=$\\alpha$+p+p) systems, as well as to\n$^{14}$Be (=$^{12}$Be+n+n). For $^6$He, we essentially recover results of the\nliterature. Application to $^{14}$Be suggests the existence of an excited $2^+$\nstate below threshold. The calculated B(E2) value should make this state\nobservable with Coulomb excitation experiments.",
    "arxiv_id": "nucl-th/0512016",
    "authors": [
      "P. Descouvemont",
      "E. M. Tursunov",
      "D. Baye"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1016/j.nuclphysa.2005.11.010",
    "journal_ref": "Nucl.Phys. A765 (2006) 370-389",
    "title": "Three-body continuum states on a Lagrange mesh",
    "url": "https://arxiv.org/abs/nucl-th/0512016"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "3adaf9f8-6dc7-4e9f-b0c7-51b12543dd97",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}