Strange hadron matter and SU(3) symmetry
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
- Centre for the Subatomic Structure of Matter, University of Adelaide, SA 5005 (Australia)
We calculate saturation curves for strange hadron matter using recently constructed baryon-baryon potentials which are constrained by SU(3) symmetry. All possible interaction channels within the baryon octet (consisting of N,{Lambda},{Sigma}, and {Xi}) are considered. It is found that a small {Lambda} fraction in nuclear matter slightly increases binding, but that larger fractions ({gt}10{percent}) rapidly cause a decrease. Charge-neutral {l_brace}N,{Lambda},{Xi}{r_brace} systems, with equal densities for nucleons and cascades, are only very weakly bound. The dependence of the binding energies on the strangeness per baryon, f{sub s}, is predicted for various {l_brace}N,{Lambda},{Xi}{r_brace} and {l_brace}N,{Lambda},{Sigma},{Xi}{r_brace} systems. The implications of our results in relativistic heavy-ion collisions and the core of a dense star are discussed. We also discuss the differences between our results and previous hadron matter calculations. {copyright} {ital 1999} {ital The American Physical Society}
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- OSTI ID:
- 357333
- Journal Information:
- Physical Review, C, Vol. 60, Issue 2; Other Information: PBD: Aug 1999
- Country of Publication:
- United States
- Language:
- English
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