{
  "annotation_id": "5e12bdee-fa3c-4b7e-a290-5f42843074a5",
  "date_created": "2026-03-02T18:00:25.012000Z",
  "date_modified": "2026-03-02T18:00:25.012000Z",
  "file_hash": "230f9baa59100bd87541416bb72ad9d0cc10cab18084d83539024f9945765f56",
  "private": false,
  "record": {
    "abstract": "In this work, a model for the n p --\u003e d (pi pi) reaction is developed. It is\nshown that the structure of the deuteron momentum spectra for a neutron beam\nmomentum of 1.46 GeV can be explained as a consequence of the interplay of two\nmechanisms involving the excitation of the N^*(1440) resonance and its\nsubsequent decay into N (pi pi)^{T=0}_{S-wave} and Delta pi respectively. The\nrelevance of the present analysis for the study of the Roper excitation and\ndecay properties, as well as for the interpretation of other two-pion\nproduction experiments is discussed.",
    "arxiv_id": "nucl-th/9811058",
    "authors": [
      "L. Alvarez-Ruso"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1016/S0370-2693(99)00310-X",
    "journal_ref": "Phys.Lett. B452 (1999) 207-213",
    "title": "The role of the Roper resonance in n p --\u003e d (pi pi)",
    "url": "https://arxiv.org/abs/nucl-th/9811058"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "1a091eb2-6331-4767-a45a-8d72293a9f3b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}