Papers › An introduction to the parton and hadron cascade model PACIAE 3.0
An introduction to the parton and hadron cascade model PACIAE 3.0
An-Ke Lei, Yu-Liang Yan, Dai-Mei Zhou, Zhi-Lei She, Liang Zheng, Gao-Chan Yong, Xiao-Mei Li, Gang Chen, Xu Cai, Ben-Hao Sa
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We introduce a parton and hadron cascade model PACIAE 3.0 based on PYTHIA 6.428 and the PACIAE 2.2 program series. The simulation framework of C-, B-, and A-loops are designed for the high energy (√(s_(NN))≥3 GeV) and low energy (√(s_(NN))<3 GeV) nuclear collisions, respectively, in PACIAE 3.0. In the C-loop simulation, the parton-parton inelastic scattering processes are added in the partonic rescattering process. The single string structure and multiple string interaction mechanism have been introduced investigating the strangeness enhancement in C- and B-loop. An improved mapping relation between the centrality percentage definition and the impact parameter definition is proposed responding the observation of bₘₐₓ≈20 fm from ALICE, ATLAS, and CMS collaborations. We have extensively modified the phenomenological coalescence hadronization model. The PACIAE 3.0 model simulated results of particle yield, transverse momentum distribution, and rapidity distribution well reproduce, respectively, the experimental data measured at FOPI, E895, RHIC, and LHC energies.
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