Event shape engineering for inclusive spectra and elliptic flow in Pb-Pb collisions at sqrt(s_NN) = 2.76 TeV
Event shape engineering for inclusive spectra and elliptic flow in Pb-Pb collisions at sqrt(s_NN) = 2.76 TeV
复制标题
sqrt(s_NN) = 2.76 TeV 下 Pb-Pb 碰撞中包含光谱和椭圆流的事件形状工程
DOI：
10.1103/physrevc.93.034916
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Y. Miake (ALICE Collaboration)
中科院分区：
文献类型：
--
作者：
J. Adam;…;T. Chujo;S. Esumi;Y. Miake (ALICE Collaboration)
我们报告的结果与事件形状工程技术应用于铅铅碰撞TeV。通过选择在相同的中心性区间内的事件，但具有非常不同的平均流，可以研究不同的初始状态条件。我们发现事件形状选择对椭圆流coefficientto的影响几乎是独立的横向动量，这是预期的，如果这种影响是由于在系统的初始几何形状的波动。带电强子，π介子，K介子，质子的横向动量分布被发现是更难的事件高于平均水平的椭圆流，表明径向和椭圆流之间的相互作用。
We report on results obtained with the event-shape engineering technique applied to Pb-Pb collisions atTeV. By selecting events in the same centrality interval, but with very different average flow, different initial-state conditions can be studied. We find the effect of the event-shape selection on the elliptic flow coefficientto be almost independent of transverse momentum, which is as expected if this effect is attributable to fluctuations in the initial geometry of the system. Charged-hadron, -pion, -kaon, and -proton transverse momentum distributions are found to be harder in events with higher-than-average elliptic flow, indicating an interplay between radial and elliptic flow.