{
  "annotation_id": "e5f5b34a-4cb0-469f-b6c6-5f079e0157ff",
  "date_created": "2026-03-02T18:00:08.021000Z",
  "date_modified": "2026-03-02T18:00:08.021000Z",
  "file_hash": "723be977d5abbf9cea568410f6da723bba81d87ea9c7845f53f494b4c8554aac",
  "private": false,
  "record": {
    "abstract": "The beta-decay process of the $^6$He halo nucleus into the alpha+d continuum\nis studied in a three-body model. The $^6$He nucleus is described as an\nalpha+n+n system in hyperspherical coordinates on a Lagrange mesh. The\nconvergence of the Gamow-Teller matrix element requires the knowledge of wave\nfunctions up to about 30 fm and of hypermomentum components up to K=24. The\nshape and absolute values of the transition probability per time and energy\nunits of a recent experiment can be reproduced very well with an appropriate\nalpha+d potential. A total transition probability of 1.6E-6 s$^{-1}$ is\nobtained in agreement with that experiment. Halo effects are shown to be very\nimportant because of a strong cancellation between the internal and halo\ncomponents of the matrix element, as observed in previous studies. The\nforbidden bound state in the alpha+d potential is found essential to reproduce\nthe order of magnitude of the data. Comments are made on R-matrix fits.",
    "arxiv_id": "nucl-th/0512006",
    "authors": [
      "E. M. Tursunov",
      "D. Baye",
      "P. Descouvemont"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevC.73.014303 10.1103/PhysRevC.74.069904",
    "journal_ref": "Phys.Rev.C73:014303,2006; Erratum-ibid.C74:069904,2006",
    "title": "Analysis of the $^6$He $\\beta$ decay into the $\\alpha+d$ continuum   within a three-body model",
    "url": "https://arxiv.org/abs/nucl-th/0512006"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "88465ee0-ce3c-4cfb-8230-65db1e559b73",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}