Pythia 程序是用於在高能碰撞中生成事件的標準工具 物理模型

 Pythia 程序是用於在高能碰撞中生成事件的標準工具，包括一組連貫的物理模型，用於從少體硬過程到復雜的多粒子最終狀態的演化。 它包含一個硬過程庫、初始和最終狀態部分子簇射的模型、硬過程和部分子簇射之間的匹配和合併方法、多部分相互作用、束殘餘、弦碎裂和粒子衰變。 它還具有一組實用程序和多個與外部程序的接口。 Pythia 8.2 是從 Fortran 完全重寫為 C++ 之後的第二個主要版本，現在已經成熟到可以完全替代大多數應用程序，尤其是 LHC 物理研究。 許多新功能應該允許改進數據描述。

https://pythia.org/

https://vincia.hepforge.org/
 
PYTHIA  JETSET   high energy physics event

http://www.phys.ufl.edu/~rfield/cdf/CDF_minbias.html

https://en.wikipedia.org/wiki/Event_generator

 

 

List of event generators
The major event generators that are used by current experiments are:
Hadronic event generators[3]
    PYTHIA (formerly Pythia/Jetset)
    HERWIG
    ISAJET
    SHERPA
Multi-purpose parton level generators
    MadGraph5 (able to run directly on the web site after registration and an email to the author)
    Whizard
 

https://en.wikipedia.org/wiki/Event_generator

Event generators are software libraries that generate simulated high-energy particle physics events. They randomly generate events as those produced in particle accelerators, collider experiments or the early universe. Events come in different types called processes as discussed in the Automatic calculation of particle interaction or decay article.