dorsal/arxiv
View SchemaProbing nuclear expansion dynamics with $\pi^-/\pi^+$-spectra
| Authors | S. Teis, W. Cassing, M. Effenberger, A. Hombach, U. Mosel, Gy. Wolf |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9701057 |
| URL | https://arxiv.org/abs/nucl-th/9701057 |
| DOI | 10.1007/s002180050405 |
| Journal | Z.Phys. A359 (1997) 297-304 |
Abstract
We study the dynamics of charged pions in the nuclear medium via the ratio of differential $\pi^-$- and $\pi^+$-spectra in a coupled-channel BUU (CBUU) approach. The relative energy shift of the charged pions is found to correlate with the pion freeze-out time in nucleus-nucleus collisions as well as with the impact parameter of the heavy-ion reaction. Furthermore, the long-range Coulomb force provides a 'clock' for the expansion of the hot nuclear system. Detailed comparisons with experimental data for $Au + Au$ at 1 GeV/A and $Ni + Ni$ at 2.0 GeV/A are presented.
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"abstract": "We study the dynamics of charged pions in the nuclear medium via the ratio of\ndifferential $\\pi^-$- and $\\pi^+$-spectra in a coupled-channel BUU (CBUU)\napproach. The relative energy shift of the charged pions is found to correlate\nwith the pion freeze-out time in nucleus-nucleus collisions as well as with the\nimpact parameter of the heavy-ion reaction. Furthermore, the long-range Coulomb\nforce provides a \u0027clock\u0027 for the expansion of the hot nuclear system. Detailed\ncomparisons with experimental data for $Au + Au$ at 1 GeV/A and $Ni + Ni$ at\n2.0 GeV/A are presented.",
"arxiv_id": "nucl-th/9701057",
"authors": [
"S. Teis",
"W. Cassing",
"M. Effenberger",
"A. Hombach",
"U. Mosel",
"Gy. Wolf"
],
"categories": [
"nucl-th"
],
"doi": "10.1007/s002180050405",
"journal_ref": "Z.Phys. A359 (1997) 297-304",
"title": "Probing nuclear expansion dynamics with $\\pi^-/\\pi^+$-spectra",
"url": "https://arxiv.org/abs/nucl-th/9701057"
},
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