15 lines
1001 B
Plaintext
15 lines
1001 B
Plaintext
The Pythia program can be used to generate high-energy-physics events,
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i.e. sets of outgoing particles produced in the interactions between two in-
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coming particles. The objective is to provide as accurate as possible a
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representation of event properties in a wide range of reactions, within and
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beyond the Standard Model, with emphasis on those where strong inter-
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actions play a role, directly or indirectly, and therefore multihadronic final
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states are produced. The physics is then not understood well enough to
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give an exact description; instead the program has to be based on a com-
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bination of analytical results and various QCD-based models. This physics
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input is summarized here, for areas such as hard subprocesses, initial- and
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final-state parton showers, underlying events and beam remnants, fragmen-
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tation and decays, and much more. Furthermore, extensive information is
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provided on all program elements: subroutines and functions, switches and
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parameters, and particle and process data
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