A Microscopic Picture of Strangeness Production at the SPS

Abstract

The microscopic origin of the strangeness enhancements observed in PbPb collisions at the SPS is studied by testing the effects of three mechanisms. First, the junction processes found in the HIJING/BBbar event generator are reviewed showing that they can account for only part of the observed hyperon enhancements. Second, the efficient final state chemical changing processes (e.g. Lambda + K -> Xi + pi) are included by adding the General Cascade Program (GCP) to HIJING/BBbar. While these processes are shown to further enhance multistrange baryon production, HIJING/BBbar+GCP is still unable to fully describe either the large hyperon yields or the increasing K+/pi+ ratio. Finally, the addition of transient field fluctuations or ropes to HIJING/BBbar+GCP is shown to be needed to account for the large hyperon yields and for the behavior of the K+/pi+ ratio.

To appear in the proceedings of Strangeness 2000, the 5th International Conference on Strangeness in Quark Matter, July 20-25, 2000, Berkeley, CA

Cited by in corpus (7)

• Multi-Strange Baryon Production in Au-Au collisions at sqrt(s_NN) = 130 GeV
• The K/pi ratio from condensed Polyakov loops
• Multistrange baryon production in relativistic heavy ion collisions
• Transient field fluctuations effects in d+Au and Au+Au collisions at \sqrt{s_nn} = 200 GeV
• Strong Color Field Baryonic Remnants in Nucleus-Nucleus Collisions at 200A GeV
• Strangeness in strongly interacting matter
• Energy densities and equilibration in heavy ion collisions at sqrt(s) = 200 GeV with the quark-gluon string model