dorsal/arxiv
View SchemaOff shell pi N amplitude and the p p->p p pi0 reaction
| Authors | E. Hernandez, E. Oset |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9503019 |
| URL | https://arxiv.org/abs/nucl-th/9503019 |
| DOI | 10.1016/0370-2693(95)00343-J |
| Journal | Phys.Lett. B350 (1995) 158-162 |
Abstract
We have used a conventional model for the $pp \rightarrow pp \pi^{0}$ reaction consisting of the Born term plus the $s$-wave rescattering term. As a novelty we have introduced the off shell dependence of the $\pi N$ $s$-wave isoscalar amplitude. This amplitude is appreciably enhanced when one moves to the off shell situations met in the problem and, as a consequence, the $pp \rightarrow pp \pi^{0}$ cross section becomes considerably larger than with the use of the $\pi N$ on shell amplitudes. Two different models for the off shell extrapolation found in the literature have been used and the cross sections obtained are large enough to account for the experimental data, although uncertainties remain due to the incomplete knowledge of the off shell extrapolation.
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"abstract": "We have used a conventional model for the $pp \\rightarrow pp \\pi^{0}$\nreaction consisting of the Born term plus the $s$-wave rescattering term. As a\nnovelty we have introduced the off shell dependence of the $\\pi N$ $s$-wave\nisoscalar amplitude. This amplitude is appreciably enhanced when one moves to\nthe off shell situations met in the problem and, as a consequence, the $pp\n\\rightarrow pp \\pi^{0}$ cross section becomes considerably larger than with the\nuse of the $\\pi N$ on shell amplitudes. Two different models for the off shell\nextrapolation found in the literature have been used and the cross sections\nobtained are large enough to account for the experimental data, although\nuncertainties remain due to the incomplete knowledge of the off shell\nextrapolation.",
"arxiv_id": "nucl-th/9503019",
"authors": [
"E. Hernandez",
"E. Oset"
],
"categories": [
"nucl-th"
],
"doi": "10.1016/0370-2693(95)00343-J",
"journal_ref": "Phys.Lett. B350 (1995) 158-162",
"title": "Off shell pi N amplitude and the p p-\u003ep p pi0 reaction",
"url": "https://arxiv.org/abs/nucl-th/9503019"
},
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