{
  "annotation_id": "386d855b-03d4-4abc-99a9-71f1401b943d",
  "date_created": "2026-03-02T18:00:04.348000Z",
  "date_modified": "2026-03-02T18:00:04.348000Z",
  "file_hash": "24bb31c4332ebc63df93d3941565e0d001b5dd6d584a56d427d4136c28b6ffd2",
  "private": false,
  "record": {
    "abstract": "Neutron and proton densities in the nuclear periphery are investigated within\n(p,n) charge-exchange isobar transitions. For this purpose we have developed\nparameter-free optical potentials with a detailed treatment of the in-medium\n$t_{\\tau}$ part of the effective interaction. Non local coupled-channel Lane\nequations are solved to obtain the scattering observables. The use of\nconventional proton and neutron densities significantly underestimates Fermi\n(forward-angle) cross-sections in agreement with findings by various other\ngroups. However, we have found model-independent densities which provide a\nremarkable improvement in the description of the quasielastic scattering\ndata.The densities obtained are consistent with recent measurements at CERN in\nstudies of the neutron-to-proton halo factor f(r)=Z$\\rho_n/N\\rho_p$ with\nantiprotons. These findings provide an alternative way to investigate the\nnuclear periphery, and may also help to solve the long-standing puzzle of the\nunderestimated Fermi cross section in (p,n) charge-exchange phenomena.",
    "arxiv_id": "nucl-th/0506051",
    "authors": [
      "H. F. Arellano",
      "W. G. Love"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1016/j.nuclphysa.2005.03.069",
    "journal_ref": "Nucl.Phys. A755 (2005) 527-530",
    "title": "Nuclear halo structure from quasielastic charge-exchange reactions",
    "url": "https://arxiv.org/abs/nucl-th/0506051"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9d1f3f8d-c93e-4719-89d5-f186715518e5",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}