论文标题
基于三流体流体力学的事件模拟器的更新：沉重离子碰撞中的光核生产
Update of the Three-fluid Hydrodynamics-based Event Simulator: light-nuclei production in heavy-ion collisions
论文作者
论文摘要
我们介绍了基于三流体动力学（3FD）的事件发生器的更新，并在核碰撞的后期对超相关的量子分子动力学（URQMD）进行了互补。引入了两个修改。 HADRONIC共振的Theseus表与基础3FD模型的共振保持一致。主要的修改是扩展发电机以模拟相对论重型离子碰撞中的光核生产，并与哈德子相等。这些修改是通过应用程序描述可用实验数据的。更新的发电机的第一次运行显示了光核上Na49数据的良好再现。无需任何额外的参数即可实现繁殖，而3FD中的合并方法需要分别对每个光核的聚合系数进行特殊调整。
We present an update of the event generator based on the three-fluid dynamics (3FD), complemented by Ultra-relativistic Quantum Molecular Dynamics (UrQMD) for the late stage of the nuclear collision~-- the three-fluid Hydrodynamics-based Event Simulator Extended by UrQMD final State interactions (THESEUS). Two modifications are introduced. The THESEUS table of hadronic resonances is made consistent with that of the underlying 3FD model. The main modification is that the generator is extended to simulate the light-nuclei production in relativistic heavy-ion collisions, on the equal basis with hadrons. These modifications are illustrated by applications to the description of available experimental data. The first run of the updated generator revealed a good reproduction of the NA49 data on the light nuclei. The reproduction is achieved without any extra parameters, while the coalescence approach in 3FD requires special tuning of the coalescence coefficients for each light nucleus separately.
