arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1105.0300nucl-thhep-ph
收藏

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

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

Bao-Chun Li, Yuan-Yuan Fu, Er-Qin Wang, Fu-Hu Liu

摘要:

利用包含发射源相互作用贡献的多源理想气体模型,研究了高能核-核碰撞中产生的带电强子的椭圆流$v_2$对横动量$P_T$的依赖性.我们的计算结果与STAR和ALICE合作的实验数据在更宽的$P_T$范围内近似一致。结果表明,膨胀系数随碰撞参量的增加而线性增加,从中心碰撞(0-5%)到中-周边碰撞(35-40%)。

英文摘要:

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.

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。

↑