PACIAE 2.0: An updated parton and hadron cascade model (program) for the relativistic nuclear collisions-猫眼课题宝

DOI：

10.1016/j.cpc.2011.08.021

发表时间：

2011-04

期刊：

Comput. Phys. Commun.

影响因子：

通讯作者：

中科院分区：

其他

文献类型：

作者：

B. Sa;D. Zhou;Yu-Liang Yan;Xiao-Mei Li;S. Feng;B. Dong;Xu Cai

我们更新了相对论核碰撞的部分子和强子级联模型PACIAE，从基于JETSET 6.4和PYTHIA 5.7的PACIAE更新为基于PYTHIA 6.4的PACIAE，并更名为PACIAE 2.0。讨论了部分子初始化、部分子再散射、强子化和强子再散射等阶段的主要物理过程。简要说明了程序的结构。此外，还对一些算例进行了计算，并与实验数据进行了比较。事实证明，这种模式（方案）运作良好。程序摘要：程序标题：PACIAE版本2.0目录标识符：AEKI_v1_0程序摘要URL：http://cpc.cs.qub.ac.uk/summaries/AEKI_v1_0.html程序可从：CPC程序图书馆，皇后大学，贝尔法斯特，N。爱尔兰许可条款：标准CPC许可证，http://cpc.cs.qub.ac.uk/licence/licence.html分布式程序中的行数，包括测试数据等：297 523分布式程序中的字节数，包括测试数据等：2 051 274分发格式：tar.gz编程语言：FORTRAN 77计算机：DELL Studio XPS和其他带有FORTRAN 77或GFORTRAN编译器的操作系统：Unix/Linux RAM：1 G字字大小：64位分类：11.2问题性质：强子输运（级联）模型的Monte Carlo模拟成功地研究了相对论核碰撞末态观测量。然而，高pT抑制、喷射淬火（能量损失）和v2的偏心缩放等，在高能核碰撞中观察到的结果表明，初始部分子态对最终强子态有重要影响。因此，相对论性核碰撞的部分子和强子输运（级联）模型是非常必要的。解决方法：部分子和强子级联模型PACIAE最初基于JETSET 7.4和PYTHIA 5.7。PYTHIA模型已经更新到PYTHIA 6.4，增加了新的物理，对现有的物理进行了改进，并嵌入了JETSET模型等。因此，本文在PYTHIA 6.4的基础上将PACIAE模型更新到新版本的PACIAE 2.0。此外，新版本中还引入了一些物理方面的改进。限制：取决于研究的问题。运行时间：

We have updated the parton and hadron cascade model PACIAE for the relativistic nuclear collisions, from based on JETSET 6.4 and PYTHIA 5.7 to based on PYTHIA 6.4, and renamed as PACIAE 2.0. The main physics concerning the stages of the parton initiation, parton rescattering, hadronization, and hadron rescattering were discussed. The structures of the programs were briefly explained. In addition, some calculated examples were compared with the experimental data. It turns out that this model (program) works well. PROGRAM SUMMARY: Program title: PACIAE version 2.0 Catalogue identifier: AEKI_v1_0 Program summary URL:http://cpc.cs.qub.ac.uk/summaries/AEKI_v1_0.html Program obtainable from: CPC Program Library, Queenʼs University, Belfast, N. Ireland Licensing provisions: Standard CPC licence, http://cpc.cs.qub.ac.uk/licence/licence.html No. of lines in distributed program, including test data, etc.: 297 523 No. of bytes in distributed program, including test data, etc.: 2 051 274 Distribution format: tar.gz Programming language: FORTRAN 77 Computer: DELL Studio XPS and others with a FORTRAN 77 or GFORTRAN compiler Operating system: Unix/Linux RAM: 1 G words Word size: 64 bits Classification: 11.2 Nature of problem: The Monte Carlo simulation of hadron transport (cascade) model is successful in studying the observables at final state in the relativistic nuclear collisions. However the high pTsuppression, the jet quenching (energy loss), and the eccentricity scaling of v2etc., observed in high energy nuclear collisions, indicates the important effect of the initial partonic state on the final hadronic state. Therefore better parton and hadron transport (cascade) models for the relativistic nuclear collisions are highly required. Solution method: The parton and hadron cascade model PACIAE is originally based on the JETSET 7.4 and PYTHIA 5.7. The PYTHIA model has been updated to PYTHIA 6.4 with the additions of new physics, the improvements in existing physics, and the embedding of the JETSET model, etc. Therefore we update the PACIAE model to the new version of PACIAE 2.0 based on the PYTHIA 6.4 in this paper. In addition, some improvements in physics have been introduced in this new version. Restrictions: Depends on the problem studied. Running time: References:

PACIAE 2.0: An updated parton and hadron cascade model (program) for the relativistic nuclear collisions

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