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arXiv nucl-th/9502002nucl-th
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CERN 200 GeV/A重离子碰撞的相变流体动力学模型数值分析

Numerical Analyses of CERN 200GeV/A Heavy-Ion Collisions Based on a Hydrodynamical Model with Phase Transition

Shin Muroya, Hiroki Nakamura, Mikio Namiki

摘要:

基于一个考虑相变的流体动力学模型,对近年来的高能重离子碰撞实验进行了数值分析,讨论了QGP流体初始状态随碰撞核质量的系统变化.在前一篇文章中,我们建立了一个具有相变的夸克-胶子等离子体的(3+1)维流体动力学模型,并对时空演化进行了详细的数值讨论。本文将数值解与CERN WA 80和NA 35给出的强子分布进行了比较。通过对各种碰撞核实验的系统分析,讨论了流体动力学模型的初始参数对碰撞核质量的依赖关系。此外,我们还外推了150 GeV/A铅-铅碰撞的强子分布。

英文摘要:

We numerically analyze recent high energy heavy-ion collision experiments based on a hydrodynamical model with phase transition and discuss a systematic change of initial state of QGP-fluid depending on colliding-nuclei's mass. In a previous paper, we formulated a (3+1)-dimensional hydrodynamical model for quark-gluon plasma with phase transition and discussed numerically the space-time evolution in detail. We here compare the numerical solution with the hadronic distributions given by CERN WA80 and NA35. Systematic analyses of the experiments with various colliding nuclei enable us to discuss the dependences of the initial parameters of the hydrodynamical model on colliding nuclei's mass. Furthermore, extrapolating the present experiments, we derive the possible hadronic distributions for lead-lead 150GeV/A collision.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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