{
  "annotation_id": "f57d6cf2-152b-4f70-90fc-6348418f12bb",
  "date_created": "2026-03-02T18:00:25.829000Z",
  "date_modified": "2026-03-02T18:00:25.829000Z",
  "file_hash": "c76050f7330e2cf87045c6bed7e781a87dc82bf44b97b493c77dea9ad415f698",
  "private": false,
  "record": {
    "abstract": "The reaction A(pi,pi pi)X has been studied at low energies, paying particular\nattention to the interaction of the two final pions in the scalar isoscalar\n(I=J=0) channel. We have developed a microscopic model for the pion production,\nand then implemented the two pion final state interaction by using the results\nof a non-perturbative unitary coupled-channels method based in the standard\nchiral Lagrangians. The resulting model, describes well the reaction on the\nnucleon for all different isospin channels.\n  Finally, we have considered the reaction in nuclei. Our calculation takes\ninto account Fermi motion, Pauli blocking, pion absorption, and also the strong\nmodification of the pi-pi interaction in the nuclear medium.",
    "arxiv_id": "nucl-th/9907008",
    "authors": [
      "M. J. Vicente Vacas",
      "E. Oset"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevC.60.064621",
    "journal_ref": "Phys.Rev.C60:064621,1999",
    "title": "Scalar Isoscalar pion pairs in nuclei and the A(pi,pipi)X reaction",
    "url": "https://arxiv.org/abs/nucl-th/9907008"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c7fa73da-6622-405c-ad80-a4b189c66ed8",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}