dorsal/arxiv
View SchemaPion production in proton-proton collisions in a covariant one boson exchange model
| Authors | A. Engel, A. K. Dutt-Mazumder, R. Shyam, U. Mosel |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9601026 |
| URL | https://arxiv.org/abs/nucl-th/9601026 |
| DOI | 10.1016/0375-9474(96)80008-F |
| Journal | Nucl.Phys. A603 (1996) 387-414 |
Abstract
Motivated by the renewed interest in studying the pion production on nuclei with protons at few GeV incident energies, we investigate the pion production in proton-proton collisions over an energy range of 300 $MeV$ to 2 $GeV$. Starting from a realistic one-boson exchange model with parameters fitted to the amplitudes of the elastic nucleon-nucleon scattering, we perform fully covariant calculations for the total, double and triple differential cross-sections of the $p(p,n\pi^+)p$ and $p(p,p\pi^0)p$ reactions. The calculations incorporate the exchange of $\pi, \rho,\omega$ and $\sigma$ mesons and treat nucleon and delta isobar as intermediate states. We obtain a reasonably good agreement with the experimental data in the entire range of beam energies. The form of the covariant delta propagator, the cut-off parameter for the $\pi NN$ and $\pi N\Delta$ vertex form factors and the energy dependence of the delta isobar decay width is investigated.
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"abstract": "Motivated by the renewed interest in studying the pion production on nuclei\nwith protons at few GeV incident energies, we investigate the pion production\nin proton-proton collisions over an energy range of 300 $MeV$ to 2 $GeV$.\nStarting from a realistic one-boson exchange model with parameters fitted to\nthe amplitudes of the elastic nucleon-nucleon scattering, we perform fully\ncovariant calculations for the total, double and triple differential\ncross-sections of the $p(p,n\\pi^+)p$ and $p(p,p\\pi^0)p$ reactions. The\ncalculations incorporate the exchange of $\\pi, \\rho,\\omega$ and $\\sigma$ mesons\nand treat nucleon and delta isobar as intermediate states. We obtain a\nreasonably good agreement with the experimental data in the entire range of\nbeam energies. The form of the covariant delta propagator, the cut-off\nparameter for the $\\pi NN$ and $\\pi N\\Delta$ vertex form factors and the energy\ndependence of the delta isobar decay width is investigated.",
"arxiv_id": "nucl-th/9601026",
"authors": [
"A. Engel",
"A. K. Dutt-Mazumder",
"R. Shyam",
"U. Mosel"
],
"categories": [
"nucl-th"
],
"doi": "10.1016/0375-9474(96)80008-F",
"journal_ref": "Nucl.Phys. A603 (1996) 387-414",
"title": "Pion production in proton-proton collisions in a covariant one boson exchange model",
"url": "https://arxiv.org/abs/nucl-th/9601026"
},
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