dorsal/arxiv
View SchemaNuclear halo structure from quasielastic charge-exchange reactions
| Authors | H. F. Arellano, W. G. Love |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0506051 |
| URL | https://arxiv.org/abs/nucl-th/0506051 |
| DOI | 10.1016/j.nuclphysa.2005.03.069 |
| Journal | Nucl.Phys. A755 (2005) 527-530 |
Abstract
Neutron and proton densities in the nuclear periphery are investigated within (p,n) charge-exchange isobar transitions. For this purpose we have developed parameter-free optical potentials with a detailed treatment of the in-medium $t_{\tau}$ part of the effective interaction. Non local coupled-channel Lane equations are solved to obtain the scattering observables. The use of conventional proton and neutron densities significantly underestimates Fermi (forward-angle) cross-sections in agreement with findings by various other groups. However, we have found model-independent densities which provide a remarkable improvement in the description of the quasielastic scattering data.The densities obtained are consistent with recent measurements at CERN in studies of the neutron-to-proton halo factor f(r)=Z$\rho_n/N\rho_p$ with antiprotons. These findings provide an alternative way to investigate the nuclear periphery, and may also help to solve the long-standing puzzle of the underestimated Fermi cross section in (p,n) charge-exchange phenomena.
{
"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
}