标题： 200 GeV Au-Au和2.76 TeV Pb-Pb碰撞中椭圆流对横向动量的依赖性 显示英文标题

标题： Dependence of elliptic flow on transverse momentum in 200 GeV Au-Au and 2.76 TeV Pb-Pb collisions

摘要： 我们研究了在高能核-核碰撞中产生的带电强子的椭圆流$v_2$与横向动量$P_T$的依赖关系，使用了一个包含发射源相互作用贡献的多源理想气体模型。 我们的计算结果在更宽的$P_T$范围内与STAR和ALICE合作组的实验数据大致一致。 发现膨胀因子从最中央（0-5%）到中等偏心（35-40%）碰撞随着碰撞参数线性增加。 显示英文摘要

摘要： We investigate the dependence of elliptic flows $v_2$ on transverse momentum $P_T$ for charged hadrons produced in nucleus-nucleus collisions at high energy by using a multi-source ideal gas model which includes the interaction contribution of the emission sources. Our calculated results are approximately in agreement with the experimental data over a wider $P_T$ range from the STAR and ALICE Collaborations. It is found that the expansion factor increases linearly with the impact parameter from most central (0-5%) to mid-peripheral (35-40%) collisions.