在束流能量扫描计划能量下产生的物质的体性质
Bulk Properties of the Matter Produced at Energies of the Beam Energy Scan Program
摘要：
在三流体动力学模型下，分析了相对论重离子对撞机束能扫描计划能量范围内体观测量的最新STAR数据。用不同的状态方程（EoS）进行模拟。纯强子EoS无法再现数据。一个良好的，但不完美的，整体再现的数据被发现在解除限制的情况下。交叉EoS结果是稍微更可取。为了进行这种再生，需要一个相当强的停在夸克-胶子相的重子。3FD模型不需要两个单独的冻结（即动力学和化学的）来描述STAR数据。统一的冻结适用于所有能量。
英文摘要：
Recent STAR data on the bulk observables in the energy range of the Beam-Energy Scan Program at the Relativistic Heavy-Ion Collider are analyzed within the model of the three-fluid dynamics (3FD). The simulations are performed with different equations of state (EoS). The purely hadronic EoS fails to reproduce the data. A good, though imperfect, overall reproduction of the data is found within the deconfinement scenarios. The crossover EoS turns out to be slightly preferable. For this reproduction a fairly strong baryon stopping in the quark-gluon phase is required. The 3FD model does not need two separate freeze-outs (i.e. kinetic and chemical ones) to describe the STAR data. A unified freeze-out is applied at all energies.
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