论文标题
基于扰动QCD和饱和的流体动力学模型的流动相关性
Flow correlations from a hydrodynamics model with dynamical freeze-out and initial conditions based on perturbative QCD and saturation
论文作者
论文摘要
我们扩展了流体动力学，扰动QCD和基于饱和度的EKRT（Eskola-Kajantie-Ruuskanen-Tuominen）框架通过引入动态冻结条件，以实现超层次重型离子碰撞，以实现超层次重型离子碰撞。与以前的EKRT计算相比，作为一种新成分，我们还引入了非零体粘度。我们计算各种望言观察物和流动相关性，包括标准化的对称累积剂，混合谐波累积和流动转换动量相关性，并将它们与BNL相对论重离子碰撞器（RHIC）和CERN大型强子碰撞器（LHC）进行比较。我们证明，包含动态冷冻和散装粘度，可以更好地描述外围碰撞中测量的流量系数，并在将来限制QCD物质的性质时，可以使用扩展的中心性范围。
We extend the applicability of the hydrodynamics, perturbative QCD and saturation -based EKRT (Eskola-Kajantie-Ruuskanen-Tuominen) framework for ultrarelativistic heavy-ion collisions to peripheral collisions by introducing dynamical freeze-out conditions. As a new ingredient compared to the previous EKRT computations we also introduce a non-zero bulk viscosity. We compute various hadronic observables and flow correlations, including normalized symmetric cumulants, mixed harmonic cumulants and flow-transverse momentum correlations, and compare them against measurements from the BNL Relativistic Heavy Ion Collider (RHIC) and the CERN Large Hadron Collider (LHC). We demonstrate that the inclusion of the dynamical freeze-out and bulk viscosity allows a better description of the measured flow coefficients in peripheral collisions and enables the use of an extended centrality range when constraining the properties of QCD matter in the future.
