椭圆流非集体性的揭示
Exposing the Noncollectivity in Elliptic Flow
摘要：
我们表明，向后-向前椭圆各向异性相关提供了一个实验可观察到的集体和非集体之间的贡献，观察到的椭圆各向异性$v_2$在相对论重离子碰撞区分。这个可观察到的测量将揭示集体膨胀的动量尺度，以及椭圆各向异性主要由（半）硬过程。
英文摘要：
We show that backward-forward elliptic anisotropy correlation provides an experimentally accessible observable which distinguishes between collective and non-collective contributions to the observed elliptic anisotropy $v_2$ in relativistic heavy ion collisions. The measurement of this observable will reveal the momentum scale at which collective expansion seizes and where the elliptic anisotropy is dominated by (semi)-hard processes.
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