PROGRAM SUMMARY
Title of program:
PYTHIA V6.154
Catalogue identifier:
ADNN
Ref. in CPC:
135(2001)238
Distribution format: gzip file
Operating system: Red Hat Linux 6.2
High speed store required:
800K words
Number of bits in a word:
32
Number of lines in distributed program, including test data, etc:
52815
Keywords:
Elementary particle physics, Event simulation, Standard model,
Beyond standard model, Hard scattering, e+e- annihilation,
Leptoproduction, Photoproduction, Hadronic processes,
High-pT scattering, Prompt photons, Gauge bosons, Higgs physics,
Parton distribution functions, Jet production, Parton showers,
Fragmentation, Hadronization, Beam remnants, Multiple interactions,
Particle decays, Event measures.
Programming language used: Fortran
Computer:
DELL Precision 210 .
Other versions of this program:
Cat. Id. Title Ref. in CPC ACTU PYTHIA 5.7 AND JETSET 7.4 82(1994)74
Nature of problem:
High-energy collisions between elementary particles normally give rise
to complex final states, with large multiplicities of hadrons, leptons,
neutrinos and photons. The relation between these final states and the
underlying physics description is not a simple one, for two main
reasons. Firstly, we do not even in principle have a complete
understanding of the physics. Secondly, any analytical approach is made
intractable by the large multiplicities.
Method of solution:
Complete events are generated by Monte Carlo methods. The complexity is
mastered by a subdivision of the full problem into a set of simpler
separate tasks. All main aspects of the events are simulated, such as
hard-process selection, initial- and final-state radiation, beam
remnants, fragmentation, decays, and so on. Therefore events should be
directly comparable with experimentally observable ones. The programs
can be used to extract physics from comparisons with existing data, or
to study physics at future experiments.
Restrictions:
Depends on the problem studied.
Typical running time:
10-1000 events per second, depending on process studied.
Unusual features:
None
References:
T. Sjostrand, Comp. Phys. Commun. 82 (1994) 74. S. Mrenna, Comp. Phys. Commun. 101 (1997) 232.