Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2012-01-20
Physics
Nuclear Physics
Nuclear Experiment
4 pages, 2 figures, the proceedings of 7th International Workshop on Critical Point and Onset of Deconfinement (CPOD2011), Wuh
Scientific paper
The RHIC beam energy scan program in its first phase collected data for Au+Au collisions at beam energies of 7.7, 11.5 and 39 GeV. The event statistics collected at these lower energies allow us to study the centrality dependence of various observables in detail, and compare to fixed-target experiments at SPS for similar beam energies. The chemical and kinetic freeze-out parameters can be extracted from the experimentally measured yields of identified hadrons within the framework of thermodynamical models. These then provide information about the system at the stages of the expansion where inelastic and elastic collisions of the constituents cease. We present the centrality dependence of freeze-out parameters for Au+Au collisions at midrapidity for $\sqrt{s_{NN}} = 7.7$, 11.5, and 39 GeV from the STAR experiment. The chemical freeze-out conditions are obtained by comparing the measured particle ratios (involving $\pi$, $K$, $p$, and $\bar{p}$) to those from the statistical thermal model calculations. The kinetic freeze-out conditions are extracted at these energies by simultaneously fitting the invariant yields of identified hadrons ($\pi$, $K$, and $p$) using Blast Wave model calculations.
No associations
LandOfFree
Centrality dependence of freeze-out parameters from Au+Au collisions at $\sqrt{s_{NN}}=$7.7, 11.5 and 39 GeV does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Centrality dependence of freeze-out parameters from Au+Au collisions at $\sqrt{s_{NN}}=$7.7, 11.5 and 39 GeV, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Centrality dependence of freeze-out parameters from Au+Au collisions at $\sqrt{s_{NN}}=$7.7, 11.5 and 39 GeV will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-320261