论文标题
使用Quasiparticle各向异性流体动力学，在5.02 TEV处的散装可观察力
Bulk observables at 5.02 TeV using quasiparticle anisotropic hydrodynamics
论文作者
论文摘要
我们对在5.02 TEV PB-PB碰撞中收集的大量散装数据和实验数据之间进行了比较，对3+1D Quasiparticle各向异性流体动力学（AHYDROQP）预测进行了比较。我们对已识别的HADRON光谱，标识的HADRON平均横向动量，带电的粒子多重性作为伪造性，KAON-TO-PION（$ K/π$）和质子到质子（$ p/π$）和集成椭圆流的函数做出AHYDROQP预测。我们将Alice Collaboration在5.02 TEV PB-PB碰撞中收集的数据进行比较。我们发现，AhydroQP很好地描述了这些大量可观察物，假定的初始中心温度为$ T_0 = 630 $ MEV，$τ_0= 0.25 $ fm/c/c/c和持续的特定剪切粘度为$η/s = 0.159 $，峰值的峰值粘度为$ $/s/s/s/s = 0.048 $。特别是，我们发现Ahydroqp在最中心的碰撞中非常很好地描述了Kaon-Pion（$ K/π$）和质子对pion（$ p/π$）比的动量依赖性。
We present comparisons between 3+1D quasiparticle anisotropic hydrodynamics (aHydroQP) predictions for a large set of bulk observables and experimental data collected in 5.02 TeV Pb-Pb collisions. We make aHydroQP predictions for identified hadron spectra, identified hadron average transverse momentum, charged particle multiplicity as a function of pseudorapidity, the kaon-to-pion ($K/π$) and proton-to-pion ($p/π$) ratios, and integrated elliptic flow. We compare to data collected by the ALICE collaboration in 5.02 TeV Pb-Pb collisions. We find that these bulk observables are quite well described by aHydroQP with an assumed initial central temperature of $T_0=630$ MeV at $τ_0 = 0.25$ fm/c and a constant specific shear viscosity of $η/s=0.159$ and a peak specific bulk viscosity of $ζ/s = 0.048$. In particular, we find that the momentum dependence of the kaon-to-pion ($K/π$) and proton-to-pion ($p/π$) ratios reported recently by the ALICE collaboration are extremely well described by aHydroQP in the most central collisions.
