Equation of state, radial flow, and freeze-out in high energy heavy ion collisions
Equation of state, radial flow, and freeze-out in high energy heavy ion collisions
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DOI：
10.1103/physrevc.57.1891
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发表时间：
1997-09
影响因子：
3.1
通讯作者：
C. Hung;E. Shuryak
中科院分区：
文献类型：
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作者：
C. Hung;E. Shuryak
我们已经表明，最近的径向流的实验数据，无论是从AGS和SPS能量，是在协议的状态方程（EOS），包括QCD相变。建立了一个新的流体动力学模型（HKM），该模型结合了膨胀的流体动力学处理和冻出的动力学。我们表明，冻结出表面不同的secondaries和不同的碰撞是非常不同的，他们不是在所有的等温线（假设在大多数以前的水电工程）。将HKM的结果与基于级联的事件发生器RQMD的结果进行了比较，发现两者的EOS和流的一致性都很好，但时空图像仍有一定的差异。
We have shown that recent experimental data on radial flow, both from AGS and SPS energies, are in agreement with the Equation of State (EOS) including the QCD phase transition. New hydro-kinetic model (HKM) is developed, which incorporates hydrodynamical treatment of expansion and proper kinetics of the freeze-out. We show that the freeze-out surfaces for different secondaries and different collisions are very different, and they are not at all isotherms (as was assumed in most previous hydro works). Comparison of HKM results with cascade-based event generator RQMD is also made in some details: we found that both EOS and flow are in rather good agreement, while the space-time picture is still somewhat different.