积分流体动力学模型下200 AGeV Au+Au到5.44 ATeV Pd + Pd重离子碰撞的飞秒尺度和粒子产生
Femtoscopy scales and particle production in the relativistic heavy ion collisions from Au+Au at 200 AGeV to Xe+Xe at 5.44 ATeV within the integrated hydrokinetic model
摘要：
回顾和重新审视了在高能重离子碰撞的综合流体动力学模型（iHKM）中得到的主要软观测量，包括强子和光子产额、粒子数比、$p_T$谱、流谐波以及飞秒半径.考虑了不同核在不同能量下碰撞的情况：在RHIC最高能量$\sqrt{s_{NN}}=200$ GeV下的Au+Au碰撞，在LHC能量$\sqrt{s_{NN}}=2.76$ TeV和$\sqrt{s_{NN}}=5.02$ TeV下的Pb+Pb碰撞，以及在$\sqrt{s_{NN}}=5.44$ TeV下的LHC碰撞.讨论了初始条件和模型参数对模拟结果的影响，包括夸克-胶子相的状态方程（EoS），以及物质演化的最后补燃阶段的作用。所谓的“光子之谜”的可能的解决方案被认为是。还注意到干涉测量体积和单个干涉测量半径对碰撞中形成的系统的初始横向几何尺寸的依赖性。
英文摘要：
The recent results on the main soft observables, including hadron and photon yields and particle number ratios, $p_T$ spectra, flow harmonics, as well as the femtoscopy radii, obtained within the integrated hydrokinetic model (iHKM) for high-energy heavy-ion collisions are reviewed and re-examined. The cases of different nuclei colliding at different energies are considered: Au+Au collisions at the top RHIC energy $\sqrt{s_{NN}}=200$ GeV, Pb+Pb collisions at the LHC energies $\sqrt{s_{NN}}=2.76$ TeV and $\sqrt{s_{NN}}=5.02$ TeV, and the LHC Xe+Xe collisions at $\sqrt{s_{NN}}=5.44$ TeV. The effect of the initial conditions and the model parameters, including the utilized equation of state (EoS) for quark-gluon phase, on the simulation results, as well as the role of the final afterburner stage of the matter evolution are discussed. The possible solution of the so-called ``photon puzzle'' is considered. The attention is also paid to the dependency of the interferometry volume and individual interferometry radii on the initial transverse geometrical size of the system formed in the collision.
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