Strange hadron matter and SU(3) symmetry

Phys. Rev. C 60, 024006 – Published 23 July 1999
V. G. J. Stoks and T.-S. H. Lee

Abstract

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,Λ,Σ, and Ξ) are considered. It is found that a small Λ fraction in nuclear matter slightly increases binding, but that larger fractions (>10%) rapidly cause a decrease. Charge-neutral {N,Λ,Ξ} systems, with equal densities for nucleons and cascades, are only very weakly bound. The dependence of the binding energies on the strangeness per baryon, fs, is predicted for various {N,Λ,Ξ} and {N,Λ,Σ,Ξ} 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.

DOI: http://dx.doi.org/10.1103/PhysRevC.60.024006

  • Received 13 January 1999
  • Published 23 July 1999

© 1999 The American Physical Society

Authors & Affiliations

V. G. J. Stoks1,2 and T.-S. H. Lee1

  • 1Physics Division, Argonne National Laboratory, Argonne, Illinois 60439
  • 2Centre for the Subatomic Structure of Matter, University of Adelaide, SA 5005, Australia

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