Nuclear Matter Expansion Parameters from the Measurement of Differential Multiplicities for Lambda Production in Central Au+Au Collisions at AGS
arXiv:nucl-ex/9803006 · doi:10.1016/S0375-9474(98)00218-8
Abstract
The double differential multiplicities and rapidity distributions for Lambda hyperon production in central Au+Au interactions at AGS in the range of rapidities from 1.7 to 3.2 and the range of transverse kinetic energies from 0.0 to 0.7 GeV are parametrized in terms of the the Blast Wave approximation. The longitudinal and transverse radial expansion parameters and the mean temperature of Lambda hyperons after the freeze-out of the nuclear matter are presented. The predictions of the RQMD model with and without mean field potentials are compared to our data. Both variants of RQMD are parameterized in terms of the Blast Wave model and the results of such parameterizations are compared to the experimental ones. It is found that inclusion of the mean field potentials in RQMD is essential to account for the strong expansion observed in the data.
20 pages, LaTeX using elsart.sty, 10 encapsulated postscript figures
Cited by in corpus (10)
- Properties of the QCD Matter -- An Experimental Review of Selected Results from RHIC BES Program
- Energy dependence of Lambda and Xi production in central Pb+Pb collisions at 20A, 30A, 40A, 80A, and 158A GeV measured at the CERN Super Proton Synchrotron
- Strange hadron production in Au+Au collisions at = 7.7, 11.5, 19.6, 27, and 39 GeV
- Production of and in Central 11.5 GeV/c Au + Pt Heavy Ion Collisions
- An overview of the experimental study of quark-gluon matter in high-energy nucleus-nucleus collisions
- Lambda collective flow in heavy ion reactions
- Anisotropic Collective Flow of Lambda Hyperons Produced in C + C Collisions at 4.2 AGeV/c
- Baryon-anti-baryon Flavor Correlation in Quark Combination Models in Heavy Ion Collisions
- Study of strange quark density fluctuations in Au+Au Collisions at = 7.7-200 GeV from AMPT Model
- More uses for Thermal Models