Strange hadron matter and SU(3) symmetry

Details Strange hadron matter and SU(3) symmetry Strange hadron matter and SU(3) symmetry

1999-01-13

arxiv.org/abs/nucl-th/9901030v1

Phys.Rev. C60 (1999) 024006

Physics

Nuclear Physics

Nuclear Theory

14 pages RevTeX, 7 postscript figures

Scientific paper

10.1103/PhysRevC.60.024006

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 ($>10%$) rapidly cause a decrease. Charge-neutral ${N,\Lambda,\Xi}$ systems, with equal densities for nucleons and cascades, are only very weakly bound. The dependence of the binding energies on the strangeness per baryon, $f_s$, is predicted for various ${N,\Lambda,\Xi}$ and ${N,\Lambda,\Sigma,\Xi}$ 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.

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