PYTHIA Stand-Alone Examples

• standard declarations and commonblocks, for easy copying
• the very most trivial test of PYTHIA
• run all existing subprocesses one at a time
• Z0 production at LEP 1
• supersymmetry production at a hadron collider (see below for SLHA example)
• technicolor production at the Tevatron
• charged multiplicity in top events at the LHC
• heavy Higgs mass spectrum comparing two running-width schemes
• production of a single top by s-channel W exchange (with tricks)
• study of W mass shift by colour rearrangement at LEP 2
• leptoquark production at HERA
• jet or minimum bias production by gamma*-p or gamma*-gamma* interactions

PYTHIA Interfaced to External Programs and Add-ons

• LHEF: read-in of parton-level events in the Les Houches Event File (LHEF) format for further processing by Pythia. Needs the example file ttbar.lhe. For more information on this standard, see hep-ph/0609017.
• SLHA: example how to use input via the SuSy Les Houches Accord (SLHA) to generate supersymmetric processes, in this case stop1 pair production events at LHC; the run requires an external file with a SuSy spectrum calculated by an external RGE code, like softsusy.spc generated by SoftSusy
• SLHA-BSM (QNUMBERS): read-in of new particles, names, quantum numbers, and decay tables. Needs the fictitious particles defined in main83.spc. For information on combining this standard with LHEF files, see hep-ph/0712.3311. Any QNUMBERS blocks found in the header of an LHEF file are automatically read in, without any intervention from the user.
• implementation of user-defined external processes according to the Les Houches standard
• comparison of cross sections for q g -> q gamma as external or internal process
• program for e+e- with routines to turn gluinos into stable gluino-hadrons, optionally via stop-hadrons
  and a modified version with unstable gluino-hadrons in hadron colliders
  and ditto, using "PDG-endorsed" codes for R-hadrons
  and production of stable stop-hadrons, also using "PDG-endorsed" codes
• example how to use the interface to FeynHiggs