dorsal/arxiv
View SchemaResonance model study of kaon production in baryon baryon reactions for heavy ion collisions
| Authors | K. Tsushima, A. Sibirtsev, A. W. Thomas, G. Q. Li |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9801063 |
| URL | https://arxiv.org/abs/nucl-th/9801063 |
| DOI | 10.1103/PhysRevC.59.369 10.1103/PhysRevC.61.029903 |
| Journal | Phys.Rev.C59:369-387,1999; Erratum-ibid.C61:029903,2000 |
Abstract
The energy dependence of the total kaon production cross sections in baryon baryon ($N$ and $\Delta$) collisions are studied in the resonance model, which is a relativistic, tree-level treatment. This study is the first attempt to complete a systematic, consistent investigation of the elementary kaon production reactions for both the pion baryon and baryon baryon reactions. Our model suggests that the magnitudes of the isospin-averaged total cross sections for the $N N \to N Y K$ and $\Delta N \to N Y K$ ($Y = \Lambda$ or $\Sigma$) reactions are almost equal at energies up to about 200 MeV above threshold. However, the magnitudes for the $\Delta N$ reactions become about 6 times larger than those for the $N N$ reactions at energies about 1 GeV above threshold. Furthermore, the magnitudes of the isospin-averaged total cross sections for the $N N \to \Delta Y K$ reactions turn out to be comparable to those for the $N N \to N Y K$ reactions at $N N$ invariant collision energies about 3.1 GeV, and about 5 to 10 times larger at $N N$ invariant collision energies about 3.5 GeV. The microscopic cross sections are parametrized in all isospin channels necessary for the transport model studies of kaon production in heavy ion collisions. These cross sections are then applied in the relativistic transport model to study the sensitivity to the underlying elementary kaon production cross sections.
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"abstract": "The energy dependence of the total kaon production cross sections in baryon\nbaryon ($N$ and $\\Delta$) collisions are studied in the resonance model, which\nis a relativistic, tree-level treatment. This study is the first attempt to\ncomplete a systematic, consistent investigation of the elementary kaon\nproduction reactions for both the pion baryon and baryon baryon reactions. Our\nmodel suggests that the magnitudes of the isospin-averaged total cross sections\nfor the $N N \\to N Y K$ and $\\Delta N \\to N Y K$ ($Y = \\Lambda$ or $\\Sigma$)\nreactions are almost equal at energies up to about 200 MeV above threshold.\nHowever, the magnitudes for the $\\Delta N$ reactions become about 6 times\nlarger than those for the $N N$ reactions at energies about 1 GeV above\nthreshold. Furthermore, the magnitudes of the isospin-averaged total cross\nsections for the $N N \\to \\Delta Y K$ reactions turn out to be comparable to\nthose for the $N N \\to N Y K$ reactions at $N N$ invariant collision energies\nabout 3.1 GeV, and about 5 to 10 times larger at $N N$ invariant collision\nenergies about 3.5 GeV. The microscopic cross sections are parametrized in all\nisospin channels necessary for the transport model studies of kaon production\nin heavy ion collisions. These cross sections are then applied in the\nrelativistic transport model to study the sensitivity to the underlying\nelementary kaon production cross sections.",
"arxiv_id": "nucl-th/9801063",
"authors": [
"K. Tsushima",
"A. Sibirtsev",
"A. W. Thomas",
"G. Q. Li"
],
"categories": [
"nucl-th",
"hep-ph",
"nucl-ex"
],
"doi": "10.1103/PhysRevC.59.369 10.1103/PhysRevC.61.029903",
"journal_ref": "Phys.Rev.C59:369-387,1999; Erratum-ibid.C61:029903,2000",
"title": "Resonance model study of kaon production in baryon baryon reactions for heavy ion collisions",
"url": "https://arxiv.org/abs/nucl-th/9801063"
},
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