A Brief Introduction to PYTHIA 8.1

Research output: Contribution to journalArticle


Abstract in Undetermined
The PYTHIA program is a standard tool for the generation of high-energy collisions, comprising a coherent set of physics models for the evolution from a few-body hard process to a complex multihadronic final state. It contains a library of hard processes and models for initial-and final-state parton showers, multiple parton-parton interactions, beam remnants, string fragmentation and particle decays. It also has a set of utilities and interfaces to external programs. While previous versions were written in Fortran, PYTHIA 8 represents a complete rewrite in C++. The current release is the first main one after this transition, and does not yet in every respect replace the old code. It does contain some new physics aspects, on the other hand, that should make it an attractive option especially for LHC physics studies.


Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Subatomic Physics


  • parton showers, multiparticle production, event generators, multiple interactions, hadronisation
Original languageEnglish
Pages (from-to)852-867
JournalComputer Physics Communications
Issue number11
Publication statusPublished - 2008
Publication categoryResearch