Event-plane decorrelation over pseudorapidity and its effect on azimuthal anisotropy measurements in relativistic heavy-ion collisions
Event-plane decorrelation over pseudorapidity and its effect on azimuthal anisotropy measurements in relativistic heavy-ion collisions
复制标题
伪快度上的事件平面去相关及其对相对论重离子碰撞中方位各向异性测量的影响
DOI：
10.1103/physrevc.87.011901
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发表时间：
2012-08
期刊：
影响因子：
--
通讯作者：
Fuqiang Wang
中科院分区：
文献类型：
--
作者：
Kai Xiao;刘峰;Fuqiang Wang
在多相输运模型中，我们研究了相对论重离子碰撞中赝快度事件面的解相关及其对方位各向异性测量的影响。去相关随着用于重建事件平面的粒子之间的{\eta}间隙的增加而增加。发现三次谐波事件平面在前向和后向快速性之间甚至是平行的，其来源可能源于碰撞几何三角形的相反方向。去相关可能会引起问题的各向异性流测量与赝快度间隙旨在减少非流的贡献，因此从这些测量中提取的夸克胶子等离子体的流体动力学性质。
Within A Multi-Phase Transport model, we investigate decorrelation of event planes over pseudorapidity and its effect on azimuthal anisotropy measurements in relativistic heavy-ion collisions. The decorrelation increases with increasing {\eta} gap between particles used to reconstruct the event planes. The third harmonic event planes are found even anticorrelated between forward and backward rapidities, the source of which may root in the opposite orientation of the collision geometry triangularities. The decorrelation may call into question the anisotropic flow measurements with pseudorapidity gap designed to reduce nonflow contributions, hence the hydrodynamic properties of the quark-gluon plasma extracted from those measurements.
DOI：
10.1016/j.nuclphysa.2009.10.144
发表时间：
2009-11
期刊：
Nuclear Physics
影响因子：
--
作者：
I. Arsene;I. Bearden;D. Beavis;S. Bekele;C. Besliu;B. Budick;H. Boggild;C. Chasman;C. H. Christensen
通讯作者：
I. Arsene;I. Bearden;D. Beavis;S. Bekele;C. Besliu;B. Budick;H. Boggild;C. Chasman;C. H. Christensen