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• Event_generator abstract "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.Despite the simple structure of the tree-level perturbative quantum field theory description of the collision and decay processes in an event, the observed high-energy process usually contains significant amount of modifications, like photon and gluon bremsstrahlung or loop diagram corrections, that usually are too complex to be easily evaluated in real calculations directly on the diagrammatic level. Furthermore, the non-perturbative nature of QCD bound states makes it necessary to include information that is well beyond the reach of perturbative quantum field theory, and also beyond present ability of computation in lattice QCD. And in collisional systems more complex than a few leptons and hadrons (e.g. heavy-ion collisions), the collective behavior of the system would involve a phenomenological description that also cannot be easily obtained from the fundamental field theory by a simple calculus.Any realistic test of the underlying physical process in a particle accelerator experiment, therefore, requires an adequate inclusion of these complex behaviors surrounding the actual process. Based on the fact that in most processes a factorization of the full process into individual problems is possible (which means a negligible effect from interference), these individual processes are calculated separately, and the probabilistic branching between them are performed using Monte Carlo methods.The final-state particles generated by event generators can be fed into the detector simulation, allowing a precise prediction and verification for the entire system of experimental setup. However, as the detector simulation is usually a complex and computationally expensive task, simple event analysis techniques are also performed directly on event generator results.A typical hadronic event generator simulates the following subprocesses: Initial-state composition and substructure Initial-state showers The hard process Resonance decay Final-state showers Accompanying semi-hard processes Hadronization and further decayA typical heavy-ion event generator usually can be less strict in simulating the rare and rather negligible processes found in a hadronic generator, but would need to simulate the following subprocesses, in addition to those in a hadronic generator: Nuclear initial-state High multiplicity, soft processes In-medium energy loss Collective behavior of the medium (not handled properly by any generators so far)Partly due to historic reasons, most event generators are written in FORTRAN 77, with a few C++ generators slowly emerging in recent years. The Particle Data Group maintains a standard for designating Standard Model particles and resonances with integer codes in event generators (also known as the "PDG code").".
• Event_generator wikiPageExternalLink nuwro.
• Event_generator wikiPageExternalLink borut.
• Event_generator wikiPageExternalLink jimmy.
• Event_generator wikiPageExternalLink herwig.
• Event_generator wikiPageExternalLink madgraph.hep.uiuc.edu.
• Event_generator wikiPageExternalLink alpgen.
• Event_generator wikiPageExternalLink mc_particle_id_contents.html.
• Event_generator wikiPageExternalLink hijing.
• Event_generator wikiPageExternalLink mclist.html.
• Event_generator wikiPageExternalLink www.genie-mc.org.
• Event_generator wikiPageExternalLink MCatNLO.
• Event_generator wikiPageExternalLink ~isajet.
• Event_generator wikiPageExternalLink www.sherpa-mc.de.
• Event_generator wikiPageExternalLink ariadne.
• Event_generator wikiPageID "3458824".
• Event_generator wikiPageRevisionID "606669114".
• Event_generator hasPhotoCollection Event_generator.
• Event_generator subject Category:Computational_physics.
• Event_generator subject Category:Monte_Carlo_methods.
• Event_generator subject Category:Particle_physics.
• Event_generator type Ability105616246.
• Event_generator type Abstraction100002137.
• Event_generator type Cognition100023271.
• Event_generator type Know-how105616786.
• Event_generator type Method105660268.
• Event_generator type MonteCarloMethods.
• Event_generator type PsychologicalFeature100023100.
• Event_generator comment "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.Despite the simple structure of the tree-level perturbative quantum field theory description of the collision and decay processes in an event, the observed high-energy process usually contains significant amount of modifications, like photon and gluon bremsstrahlung or loop diagram corrections, that usually are too complex to be easily evaluated in real calculations directly on the diagrammatic level. ".
• Event_generator label "Event generator".
• Event_generator label "イベントジェネレータ".
• Event_generator sameAs イベントジェネレータ.
• Event_generator sameAs m.09dkc3.
• Event_generator sameAs Q5416720.
• Event_generator sameAs Q5416720.
• Event_generator sameAs Event_generator.
• Event_generator wasDerivedFrom Event_generator?oldid=606669114.
• Event_generator isPrimaryTopicOf Event_generator.