标题： 混合方法中具有强子和部分子级联初始条件的三角流事件面的纵向关联 显示英文标题

标题： Longitudinal correlation of the triangular flow event plane in a hybrid approach with hadron and parton cascade initial conditions

摘要： 在玻尔兹曼+流体力学混合方法中计算了三角流事件平面角的纵向长程关联。 通过利用两种不同的输运方法来研究早期非平衡演化的不同能量沉积场景的可能性。 在强子输运方法中，高能重离子反应中的粒子产生主要由弦激发和碎裂过程控制，这些过程在部分子级联方法中不存在。 我们发现在这两种方法中，初始状态显示事件平面角具有强烈的纵向相关性，这种相关性在产生的粒子最终动量空间分布中被稀释但仍存在。 部分子级联方法中也可以通过近似平行胶子辐射导致类似山脊的结构，并不一定证明初始状态下存在纵向流管。 显示英文摘要

摘要： The longitudinal long-range correlations of the triangular flow event plane angles are calculated in a Boltzmann + hydrodynamics hybrid approach. The potential to disentangle different energy deposition scenarios is explored by utilizing two different transport approaches for the early non-equilibrium evolution. In the hadronic transport approach the particle production in high energy heavy ion reactions is mainly governed by string excitation and fragmentation processes which are absent in the parton cascade approach. We find that in both approaches the initial state shows a strong longitudinal correlation of the event plane angles which is diluted but still persists in the final state momentum space distributions of the produced particles. A ridge-like structure can also be caused by near-collinear gluon radiation in a parton cascade approach and does not necessarily prove longitudinal flux tubes in the initial state.