Highly Sensitive Centrality Dependence of Elliptic Flow -- A Novel Signature of the Phase Transition in QCD
Highly Sensitive Centrality Dependence of Elliptic Flow -- A Novel Signature of the Phase Transition in QCD
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DOI：
10.1103/physrevlett.82.2048
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发表时间：
1998-12
影响因子：
8.6
通讯作者：
H. Sorge
中科院分区：
文献类型：
--
作者：
H. Sorge
在核-核碰撞中产生的热的、稠密的系统的椭圆流发展为对反应区的初始方位不对称性的响应。在这里，它建议，这种响应的大小显示出高度敏感的依赖碰撞的中心性，该系统通过一阶或夸克胶子等离子体和强子物质之间的快速过渡。我们采用相对论量子分子动力学的输运理论方法研究了Pb（158 AGeV）-Pb系统，证实了上述猜想。新的相变签名可以观察到在目前和即将到来的实验在CERN-SPS和RHIC，BNL对撞机。{版权} {美国物理学会}
Elliptic flow of the hot, dense system which has been created in nucleus-nucleus collisions develops as a response to the initial azimuthal asymmetry of the reaction region. Here it is suggested that the magnitude of this response shows a highly sensitive dependence on the centrality of collisions for which the system passes through a first-order or rapid transition between quark-gluon plasma and hadronic matter. We have studied the system Pb(158A GeV) on Pb employing a recent version of the transport theoretical approach relativistic quantum molecular dynamics and find the conjecture confirmed. The novel phase transition signature may be observable in present and forthcoming experiments at CERN-SPS and at RHIC, the BNL collider. {copyright} {ital 1999} {ital The American Physical Society}