Confronting particle emission scenarios with strangeness data

Abstract

We show that a hadron gas model with continuous particle emission instead of freeze out may solve some of the problems (high values of the freeze out density and specific net charge) that one encounters in the latter case when studying strange particle ratios such as those by WA85. This underlines the necessity to understand better particle emission in hydrodynamics to be able to analyze data. It also re-opens the possibility of a quark-hadron transition occuring with phase equilibrium instead of explosively.

13 pages, 2 figures, to appear in Phys. Rev. Lett

References in corpus (3)

• Excluded volume hadron gas model for particle number ratios in A+A collisions
• Evidence for a high entropy phase in nuclear collisions
• Hot hadronic matter and strange anti-baryons

Cited by in corpus (8)

• Dynamics of Hot Bulk QCD Matter: from the Quark-Gluon Plasma to Hadronic Freeze-Out
• The analysis of particle multiplicities in Pb+Pb collisions at 158A GeV/c within hadron gas models
• Fluctuations of the Initial Conditions and the Continuous Emission in Hydrodynamic Description of Two-Pion Interferometry
• Chemical non-equilibrium and deconfinement in 200 A GeV Sulphur induced reactions
• Effect of chemical freeze out on identified particle spectra at 200AGeV Au-Au Collisions at RHIC using SPheRIO
• Continuous emission versus freeze-out via HBT
• Kinetic description of particle emission from expanding source
• Particle abundances and spectra in the hydrodynamical description of relativistic nuclear collisions with light projectiles