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Generator Interface Issues

Generator Interface Issues. Lynn Garren Nov. 30, 2005. CLHEP/HepMC. HepPDT particle ID translation methods CBinterface C++ compliant interface to common blocks Singleton implementation Fortran used only in examples Saves generated mass not always the same as mass from 4 vector

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Generator Interface Issues

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  1. Generator Interface Issues Lynn Garren Nov. 30, 2005

  2. CLHEP/HepMC • HepPDT particle ID translation methods • CBinterface • C++ compliant interface to common blocks • Singleton implementation • Fortran used only in examples • Saves generated mass • not always the same as mass from 4 vector • HEPEVT/phep(5, )

  3. HepPDT original design • Designed to interface with generators • call decay method directly • New generation of C++ generators use ThePeg/PDT • More complex than users want

  4. HepPDT Version 2 • Remove direct interface to decay methods • Simpler and more transparent • particle ID translation methods • (same as HepPDT version 1) • free function • do not depend on HepPDT::ParticleData • currently knows about PDG, herwig, isajet, pythia, QQ, EvtGen

  5. HepPDT::ParticleID • Particle ID class • Describes the PDG particle ID numbers • Is this a valid ID? • Is this a baryon, meson, etc.? • Does this particle have a b quark, etc.? • Methods to access all information embedded in PDG numbering scheme • Attempt to standardize name strings

  6. Conclusion • HepPDT version 2 available Dec. 5 • improvements based on user input • http://cepa.fnal.gov/psm/heppdt/ • Future versions based on requests from this forum • You may want some ideas from CLHEP/HepMC

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