Strange quark production in a statistical effective model

Abstract

An effective model with constituent quarks as fundamental degrees of freedom is used to predict the relative strangeness production pattern in both high energy elementary and heavy ion collisions. The basic picture is that of the statistical hadronization model, with hadronizing color-singlet clusters assumed to be at full chemical equilibrium at constituent quark level. Thus, by assuming that at least the ratio between strange and non-strange constituent quarks survives in the final hadrons, the apparent undersaturation of strange particle phase space observed in the data can be accounted for. In this framework, the enhancement of relative strangeness production in heavy ion collisions in comparison with elementary collisions is mainly owing to the excess of initial non-strange matter over antimatter and the so-called canonical suppression, namely the constraint of exact color and flavor conservation over small volumes.

22 pages, 9 postscript figures, slightly shortened version published in Phys. Rev. C

References in corpus (7)

• Hadron production in Au-Au collisions at RHIC
• Statistical hadronisation model and transverse momentum spectra of hadrons in high energy collisions
• Thermodynamics of the 3-flavor NJL model : chiral symmetry breaking and color superconductivity
• Statistical hadronisation phenomenology
• Hadrosynthesis at SPS and RHIC and the statistical model
• Chemical factors in canonical statistical models for relativistic heavy ion collisions
• Current quark mass effects on chiral phase transition of QCD in the improved ladder approximation

Cited by in corpus (5)

• Systematic Measurements of Identified Particle Spectra in pp, d+Au and Au+Au Collisions from STAR
• Enhanced strange baryon production in Au+Au collisions compared to p+p at sqrts = 200 GeV
• Scaling properties at freeze-out in relativistic heavy ion collisions
• Selected Experimental Results from Heavy Ion Collisions at LHC
• System size and energy dependence of $\varphi$ meson production at RHIC