Elliptic flow of hadrons observed at relativistic heavy ion collision experiments at relativistic heavy ion collider (RHIC) and large hadron collider (LHC) provides us an important signature of possible deconfinement transition from the hadronic phase to partonic phase. However, hadronization processes of deconfined partons back into final hadrons are found to play a vital role in the observed hadronic flow. In the present work, we use a coalescence mechanism also known as recombination (ReCo) to combine quarks into hadrons. To get there, we have used the Boltzmann transport equation in relaxation time approximation to transport the quarks into equilibration and finally to freeze-out the surface, before coalescence takes place. A Boltzmann-Gibbs blast wave (BGBW) function is taken as an equilibrium function to get the final distribution and a power-like function to describe the initial distributions of partons produced in heavy ion collisions. In the present work, we try to estimate the elliptic flow of identified hadrons such as , , and , produced in Pb+Pb collisions at at the LHC for different centralities. The elliptic flow () of identified hadrons seems to be described quite well in the available range. After the evolution of quarks until freeze-out time has been calculated using BTE-RTA, the approach used in this paper consists of combining two or more quarks to explain the produced hadrons at intermediate momenta regions. The formalism is found to describe the elliptic flow of hadrons produced in Pb+Pb collisions to a large extent.

中文翻译：

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利用Boltzmann传输方程的Pb + Pb碰撞夸克凝聚机制的强子椭圆流

在相对论性重离子对撞机（RHIC）和大型强子对撞机（LHC）的相对论性重离子碰撞实验中观察到的强子的椭圆流为我们提供了可能的从强子相到部分离子的脱限过渡的重要标志。然而，发现受限的重子回到最终的强子的强子化过程在观察到的强子流中起着至关重要的作用。在当前的工作中，我们使用合并机制（也称为重组（ReCo））将夸克组合成强子。为了到达那里，我们在松弛时间近似中使用了玻尔兹曼输运方程来将夸克运送到平衡状态，最后冻结表面，直到发生聚结为止。Boltzmann-Gibbs爆炸波（BGBW）函数被用作获得最终分布的平衡函数，并被描述为在重离子碰撞中产生的part原子的初始分布的类幂函数。在目前的工作中，我们尝试估算已识别强子的椭圆流，例如， ，和，在铅+ Pb碰撞产生的在大型强子对撞机的不同中心。在可用范围内，已识别的强子的椭圆流（）似乎描述得很好。在夸克演化之后，直到使用BTE-RTA计算出冻结时间为止，本文使用的方法是将两个或更多个夸克组合起来，以解释在中间动量区域产生的强子。发现形式主义在很大程度上描述了Pb + Pb碰撞中产生的强子的椭圆流。