论文标题

椭圆流的标准量表:一项定量研究

Number-of-constituent-quark scaling of elliptic flow: a quantitative study

论文作者

Wang, M., Tao, J. Q., Zheng, H., Zhang, W. C., Zhu, L. L., Bonasera, A.

论文摘要

使用经验函数对A+A碰撞产生的椭圆流的椭圆流的估计流量(NCQ)缩放行为进行了定量研究,该经验函数适合于RHIC和LHC可从RHIC和LHC获得的实验性$ V_2 $数据。 NCQ缩放的最常见方法涉及(1)对确定粒子与其NCQ的实验$ v_2 $数据进行缩放,(2)对其横向动量或能量进行相同的操作,然后(3)组合所有缩放数据并通过直观地识别NCQ行为(由于测量的实验数据是离散的)。我们定义两个变量$(d_1,d_2)$,以定量和同时描述NCQ缩放,并确定NCQ缩放所持的大约区域。在将来的实验中,这种方法可以应用于研究NCQ或其他缩放现象。

The number-of-constituent-quark (NCQ) scaling behavior of the elliptic flow of identified particles produced in A+A collisions is studied quantitatively using an empirical function that fits the experimental $v_2$ data available from the RHIC and LHC. The most common approach for NCQ scaling involves (1) doing a scaling of the experimental $v_2$ data of an identified particle with its NCQ, (2) doing the same to its transverse momentum or energy, then (3) combining all the scaled data and identifying the NCQ behavior by intuitively looking (since the measured experimental data are discrete). We define two variables $(d_1, d_2)$ to describe NCQ scaling quantitatively and simultaneously, and identify the approximate region where the NCQ scaling holds. This approach could be applied to study NCQ or other scaling phenomena in future experiments.

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