HYDJET/PYQUEN事件发生器和LHC新喷流猝灭观测量的最新进展
Recent developments on HYDJET/PYQUEN event generators and novel jet quenching observables at LHC
摘要：
介绍了PYQUEN、HYDJET和HYDJET++事件发生器的最新进展。部分子能量损失模型PYQUEN被实现为强子-强子相互作用发生器PYTHIA获得的“标准”喷流事件的修改。HYDJET和HYDJET++是模拟相对论重离子AA碰撞的蒙特卡罗事件发生器，被认为是软的，水型状态和硬的，多部分子碎裂的叠加。HYDJET++模型是HYDJET发生器的发展和延续，它包括了对化学冻结超曲面和热冻结超曲面上产生的“热”强子态（用相对论流体力学的参数化和预先设定的冻结条件表示）、集体流效应和强子共振衰变的更详细的处理。讨论了上述模型在新的喷流猝灭观测量中的应用。
英文摘要：
The recent developments on PYQUEN, HYDJET and HYDJET++ event generators are presented. The partonic energy loss model PYQUEN is implemented as the modification of the "standard" jet event obtained with the generator of hadron-hadron interactions PYTHIA. HYDJET and HYDJET++ are the Monte-Carlo event generators for the simulation of relativistic heavy ion AA collisions considered as a superposition of the soft, hydro-type state and the hard, multi-parton fragmentation. HYDJET++ model is the development and continuation of HYDJET generator, and it includes more detailed treatment of the "thermal" hadronic state generated on the chemical and thermal freeze-out hypersurfaces (represented by the parameterization of relativistic hydrodynamics with preset freeze-out conditions), collective flow effects and decays of hadronic resonances. Some applications of above models to novel jet quenching observables are discussed.
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