Multi-Strange Baryon Production in Au-Au collisions at sqrt(s_NN) = 130 GeV

Abstract

The transverse mass spectra and mid-rapidity yields for $Ξ$s and $Ω$s plus their anti-particles are presented. The 10% most central collision yields suggest that the amount of multi-strange particles produced per produced charged hadron increases from SPS to RHIC energies. A hydrodynamically inspired model fit to the spectra, which assumes a thermalized source, seems to indicate that these multi-strange 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 $Λ$s.