标题： 具有统计强子化的流体力学：大型强子对撞机的预测 显示英文标题

标题： Soft heavy-ion physics from hydrodynamics with statistical hadronization - predictions for the Large Hadron Collider

摘要： 流体力学与单一冻结统计强子化相结合被用于描述相对论重离子碰撞在RHIC最高能量时的中心快度区强子产生，并对未来LHC的结果做出预测。 夸克-胶子等离子体的热力学性质取自格点模拟，在低温下使用强子气体状态方程，而在交叉区域则构建了两种状态方程之间的插值。 流体力学的初始条件由熵的Glauber分布获得，初始中心温度为Ti。 从流体力学在冻结温度Tf处的膨胀得到的条件被用作热事件生成器THERMINATOR的输入。 得到了基本的物理可观测量：横向动量谱、椭圆流系数v2和HBT半径。 利用考虑共振衰变和库仑最终态相互作用的双粒子方法评估了量子统计可观测量。 讨论了同时描述所有这些可观测量的问题，结论是在RHIC最高能量下，我们的方法对软强子可观测量给出了相当令人满意的整体描述。 一些差异可能归因于强子之间缺乏最终态弹性相互作用。 将Ti外推到更高值允许对LHC上的软强子物理作出整体预测。 我们测试了Ti=400、450和500 MeV，并观察到粒子多重性增加以及流增强，导致pT谱斜率减小。 π介子的椭圆流表现出饱和，v2几乎保持不变，而HBT半径随Ti适度增大。 显示英文摘要

摘要： Hydrodynamics merged with single-freeze-out statistical hadronization is used to describe the midrapidity hadron production in relativistic heavy-ion collisions at the highest RHIC energies and to make predictions for the LHC. Thermodynamic properties of the quark-gluon plasma are taken from lattice simulations, at low temperatures the hadron-gas equation of state is used, while in the cross-over region an interpolation between the two equations of state is constructed. The initial condition for hydrodynamics is obtained from a Glauber profile for the entropy, with the initial central temperature Ti. The conditions obtained from the hydrodynamic expansion at the freeze-out temperature Tf are used as input for the thermal event generator THERMINATOR. Basic physical observables are obtained: the transverse-momentum spectra, the elliptic flow coefficient v2, and the HBT radii. The femtoscopic observables are evaluated with the help of the two-particle method which accounts for the resonance decays and Coulomb final-state interactions. The problem of a simultaneous description of all discussed observables is addressed, with the conclusion that at the highest RHIC energies our approach gives a quite satisfactory global description of soft hadronic observables. Some discrepancies may be attributed to the absence of the final-state elastic interactions among hadrons. Extrapolating Ti to higher values allows for global predictions for soft hadronic physics at the LHC. We test Ti=400, 450, and 500 MeV, and observe the expected growth of particle multiplicities and the increase of the flow, resulting in smaller slopes of the pT-spectra. The elliptic flow of pions exhibits saturation, with v2 remaining practically constant, while the HBT radii increase moderately with Ti.