{
  "annotation_id": "1bdf591e-aeae-4311-890c-994a673a7f44",
  "date_created": "2026-03-02T18:00:22.194000Z",
  "date_modified": "2026-03-02T18:00:22.194000Z",
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  "record": {
    "abstract": "We re-examine the puzzling $\\pi^+$ emission from the weak decay of\n$^4_\\Lambda$He and propose an explanation in terms of a three-body decay of the\nvirtual $\\Sigma^+$. Such a resolution of the $\\pi^+$ decay puzzle is consistent\nwith the calculated $\\Sigma^+$ probability in light $\\Lambda$ hypernuclei as\nwell as the experimentally observed $\\pi^+$ energy spectrum and $s$--wave\nangular distribution.",
    "arxiv_id": "nucl-th/9711054",
    "authors": [
      "B. F. Gibson",
      "R. G. E. Timmermans"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1016/S0375-9474(97)00642-8",
    "journal_ref": "Nucl.Phys. A628 (1998) 417-426",
    "title": "The $\\pi^+$--emission puzzle in $^4_\\Lambda$He decay",
    "url": "https://arxiv.org/abs/nucl-th/9711054"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "4e92d205-c5b6-4d81-a993-180dad9b8e05",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}