Baryon-Strangeness Correlations from Hadron/String- and Quark-Dynamics

Abstract

Baryon-strangeness correlations ($C_{BS}$) are studied with a hadron/string transport approach (UrQMD) and a dynamical quark recombination model (quark molecular dynamics, qMD) for various energies from $E_{lab}=4A$ GeV to $\sqrt{s_{NN}}=200$ GeV. As expected, we find that the hadron/string dynamics shows correlations similar to a simple hadron gas. In case of the quark molecular dynamics, we find that initially the $C_{BS}$ correlation is that of a weakly interacting QGP but changes in the process of hadronization also to the value for a hadron gas. Therefore, we conclude that the hadronization process itself makes the initial baryon strangeness correlation unobservable. To make an experimental study of this observable more feasible, we also investigate how a restriction to only charged kaons and $\Lambda$'s (instead of all baryons and all strange particles) influences the theoretical result on $C_{BS}$. We find that a good approximation of the full result can be obtained in this limit in the present simulation.

Proceedings of the Conference on Quark Confinement and the Hadron Spectrum

References in corpus (13)

• Microscopic Models for Ultrarelativistic Heavy Ion Collisions
• Relativistic Hadron-Hadron Collisions in the Ultra-Relativistic Quantum Molecular Dynamics Model (UrQMD)
• Signatures of the Tricritical Point in QCD
• Fluctuation Probes of Quark Deconfinement
• Baryon-strangeness correlations: a diagnostic of strongly interacting matter
• Event-by-event analysis of heavy ion collisions and thermodynamical fluctuations
• Event-by-event fluctuations of the charged particle ratio from non-equilibrium transport theory
• Generalizing Phi-measure of event-by-event fluctuations in high-energy heavy-ion collisions
• Statistical Mechanics of semi-classical colored Objects
• Multiplicity fluctuations in the string clustering approach
• Enhanced Event-by-Event Fluctuations in Pion Multiplicity as a Signal of Disoriented Chiral Condensates at RHIC
• Detecting QGP with Charge Transfer Fluctuations
• Event-by-Event Analysis of Baryon-Strangeness Correlations: Pinning Down the Critical Temperature and Volume of QGP Formation