dorsal/arxiv
View SchemaRoper Excitation in Alpha-Proton Scattering
| Authors | S. Hirenzaki, P. Fernández de Córdoba, E. Oset |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9511036 |
| URL | https://arxiv.org/abs/nucl-th/9511036 |
| DOI | 10.1103/PhysRevC.53.277 |
| Journal | Phys.Rev.C53:277-284,1996 |
Abstract
We study the Roper excitation in the $(\alpha,\alpha')$ reaction. We consider all processes which may be relevant in the Roper excitation region, namely, Roper excitation in the target, Roper excitation in the projectile, and double $\Delta$ excitation processes. The theoretical investigation shows that the Roper excitation in the proton target mediated by an isoscalar exchange is the dominant mechanism in the process. We determine an effective isoscalar interaction by means of which the experimental cross section is well reproduced. This should be useful to make predictions in related reactions and is a first step to construct eventually a microscopic $NN \rightarrow NN^*$ transition potential, for which the present reaction does not offer enough information.
{
"annotation_id": "5dbe9ccd-a56e-4a63-8009-289ea32ce6c4",
"date_created": "2026-03-02T18:00:15.304000Z",
"date_modified": "2026-03-02T18:00:15.304000Z",
"file_hash": "e0bb038f90f40c126d265a74bffe7ba0596dfaceb3e063e18d799ed29971a228",
"private": false,
"record": {
"abstract": "We study the Roper excitation in the $(\\alpha,\\alpha\u0027)$ reaction. We consider\nall processes which may be relevant in the Roper excitation region, namely,\nRoper excitation in the target, Roper excitation in the projectile, and double\n$\\Delta$ excitation processes. The theoretical investigation shows that the\nRoper excitation in the proton target mediated by an isoscalar exchange is the\ndominant mechanism in the process. We determine an effective isoscalar\ninteraction by means of which the experimental cross section is well\nreproduced. This should be useful to make predictions in related reactions and\nis a first step to construct eventually a microscopic $NN \\rightarrow NN^*$\ntransition potential, for which the present reaction does not offer enough\ninformation.",
"arxiv_id": "nucl-th/9511036",
"authors": [
"S. Hirenzaki",
"P. Fern\u00e1ndez de C\u00f3rdoba",
"E. Oset"
],
"categories": [
"nucl-th",
"nucl-ex"
],
"doi": "10.1103/PhysRevC.53.277",
"journal_ref": "Phys.Rev.C53:277-284,1996",
"title": "Roper Excitation in Alpha-Proton Scattering",
"url": "https://arxiv.org/abs/nucl-th/9511036"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "cbaab678-989f-453e-b7f7-c089fd5abac1",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}