Multistrange Baryon Production in Au-Au Collisions at (S_(NN))~(1/2) = 130 Ge V

摘要

The transverse mass spectra and midrapidity yields for Ξs and Ωs are presented. For the 10% most central collisions, the Ξ~+ /h~- ratio increases from the Super Proton Synchrotron to the Relativistic Heavy Ion Collider energies while the Ξ~-/h~- stays approximately constant A hydrodynamically inspired model fit to the Ξ spectra, which assumes a thermalized source, seems to indicate that these multistrange particles experience a significant transverse flow effect, but are emitted when the system is hotter and the flow is smaller than values obtained from a combined fit to π, K. p, and Λs.