Resonance model study of kaon production in baryon-baryon reactions for heavy-ion collisions

Journal Article · Fri Jan 01 04:00:00 EST 1999 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.59.369· OSTI ID:289074

Tsushima, K; Thomas, A W ^[1]; Sibirtsev, A ^[2]; Li, G Q ^[3]

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1. Department of Physics and Mathematical Physics and Special Research Center for the Subatomic Structure of Matter, University of Adelaide, SA 5005 (Australia)
2. Institut fuer Theoretische Physik, Universitaet Giessen, D-35392 Giessen (Germany)
3. Department of Physics and Astronomy, State University of New York at Stony Brook, Stony Brook, New York 11794 (United States)

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 NN{r_arrow}NYK and {Delta}N{r_arrow}NYK (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 NN reactions at energies about 1 GeV above threshold. Furthermore, the magnitudes of the isospin-averaged total cross sections for the NN{r_arrow}{Delta}YK reactions turn out to be comparable to those for the NN{r_arrow}NYK reactions at NN invariant collision energies about 3.1 GeV, and about 5 to 10 times larger at NN 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. {copyright} {ital 1999} {ital The American Physical Society}

• OSTI ID: 289074
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 1 Vol. 59; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BARYON-BARYON INTERACTIONS
HEAVY ION REACTIONS
KAONS PLUS
LAMBDA PARTICLES
PARTICLE PRODUCTION
SIGMA PARTICLES
TOTAL CROSS SECTIONS