论文标题
对重离子碰撞中charmonium椭圆流的强烈影响
Hadronic effects on charmonium elliptic flows in heavy-ion collisions
论文作者
论文摘要
运输和Langevin方程用于研究重型离子碰撞中椭圆形流的耐药介质影响。在PB-PB碰撞中，横向平面中Quark-Gluon等离子体（QGP）的各向异性能量密度在相变之后转化为强子动量各向异性。具有高横向动量$ p_t $的夏娃式是通过原始硬过程产生的，并沿QGP中不同路径进行不同程度的解离。然后，它们在强子阶段用浅黑色子散射。对中等和高横向动量研究了对椭圆形流的两种贡献。当在几何级别的几何尺度近似值中对charmonium扩散系数进行参数化时，在高横向动量下，在高横向动量下，迅速$ j/ψ$的椭圆流得到了相当大的增强。对于Quarkonia而言，这种HADRONIC培养基效果可以忽略不计，质量更大，例如底部。
Transport and Langevin equations are employed to study hadronic medium effects on charmonium elliptic flows in heavy-ion collisions. In Pb-Pb collisions, the anisotropic energy density of the quark-gluon plasma (QGP) in the transverse plane is transformed into hadron momentum anisotropy after the phase transition. Charmonia with high transverse momentum $p_T$ are produced via the primordial hard process and undergo different degrees of dissociation along different paths in the QGP. They then scatter with light hadrons in the hadron phase. Both contributions to the charmonium elliptic flows are studied at moderate and high transverse momenta. The elliptic flows of the prompt $J/ψ$ are found to be considerably enhanced at high transverse momentum when the charmonium diffusion coefficients in the hadronic medium are parametrized through the geometry scale approximation. This hadronic medium effect is negligible for quarkonia with larger mass such as bottomonia.
