dorsal/arxiv
View Schema${\omega}N$ final state interactions and $\omega$-meson production from heavy-ion collisions
| Authors | G. I. Lykasov, W. Cassing, A. Sibirtsev, M. V. Rzjanin |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9811019 |
| URL | https://arxiv.org/abs/nucl-th/9811019 |
| DOI | 10.1007/s100500050319 |
| Journal | Eur.Phys.J. A6 (1999) 71-81 |
Abstract
We calculate the elastic and inelastic $\omega N\to \omega N, \to \pi N, \to \rho N, \to \rho \pi N, \to \pi \pi N, \to \sigma N$ reactions within a boson exchange approximation where the $\omega\rho\pi$ coupling constant and form factor are fixed by the reaction $\pi N \to \omega N$ in comparison to the experimental data. We find rather large $\omega N$ cross sections at low relative momenta of the $\omega$-meson which leads to a substantial broadening of the $\omega$-meson width in nuclear matter. The implications of the ${\omega}N$ final state interactions are studied for $\omega$ production in $^{12}C{+}^{12}C, ^{40}Ca{+}^{40}Ca$ and $^{58}Ni{+}^{58}Ni$ reactions at about 2 A GeV within the HSD transport approach; the drastic changes of the transverse mass spectra relative to a general m_T-scaling (for $\pi^0$ and $\eta$ mesons) might be controlled experimentally by the TAPS Collaboration.
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"abstract": "We calculate the elastic and inelastic $\\omega N\\to \\omega N, \\to \\pi N, \\to\n\\rho N, \\to \\rho \\pi N, \\to \\pi \\pi N, \\to \\sigma N$ reactions within a boson\nexchange approximation where the $\\omega\\rho\\pi$ coupling constant and form\nfactor are fixed by the reaction $\\pi N \\to \\omega N$ in comparison to the\nexperimental data. We find rather large $\\omega N$ cross sections at low\nrelative momenta of the $\\omega$-meson which leads to a substantial broadening\nof the $\\omega$-meson width in nuclear matter. The implications of the\n${\\omega}N$ final state interactions are studied for $\\omega$ production in\n$^{12}C{+}^{12}C, ^{40}Ca{+}^{40}Ca$ and $^{58}Ni{+}^{58}Ni$ reactions at about\n2 A GeV within the HSD transport approach; the drastic changes of the\ntransverse mass spectra relative to a general m_T-scaling (for $\\pi^0$ and\n$\\eta$ mesons) might be controlled experimentally by the TAPS Collaboration.",
"arxiv_id": "nucl-th/9811019",
"authors": [
"G. I. Lykasov",
"W. Cassing",
"A. Sibirtsev",
"M. V. Rzjanin"
],
"categories": [
"nucl-th"
],
"doi": "10.1007/s100500050319",
"journal_ref": "Eur.Phys.J. A6 (1999) 71-81",
"title": "${\\omega}N$ final state interactions and $\\omega$-meson production from heavy-ion collisions",
"url": "https://arxiv.org/abs/nucl-th/9811019"
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