Cascade2Hadronizer.h

Go to the documentation of this file.

#ifndef gen_Cascade2Hadronizer_h
#define gen_Cascade2Hadronizer_h

#include <memory>
#include <string>
#include <vector>

#include "FWCore/ParameterSet/interface/ParameterSetfwd.h"
#include "GeneratorInterface/Core/interface/ParameterCollector.h"
#include "GeneratorInterface/Core/interface/BaseHadronizer.h"

namespace HepMC {
  class GenEvent;
}

namespace CLHEP {
  class HepRandomEngine;
}

namespace gen {
  
  class Pythia6Service;

  class Cascade2Hadronizer : public BaseHadronizer  {
    
  public:

    Cascade2Hadronizer(edm::ParameterSet const& ps);
    ~Cascade2Hadronizer();

    bool readSettings(int);
    bool initializeForExternalPartons(); //-- initializer for the LHE input
    bool initializeForInternalPartons();
    
    //-- Read the parameters and pass them to the common blocks
    bool cascadeReadParameters(const std::string& ParameterString);
    void cascadePrintParameters();
    void pythia6PrintParameters();    
    bool declareStableParticles(const std::vector<int>&);
    bool declareSpecialSettings( const std::vector<std::string>& ) { return true; }
    void statistics();
    
    bool generatePartonsAndHadronize();
    bool hadronize(); //-- hadronizer for the LHE input   
    bool decay();
    bool residualDecay();
    void finalizeEvent();
    
    const char* classname() const;
    
  private:
    
    virtual void doSetRandomEngine(CLHEP::HepRandomEngine* v) override;
    virtual std::vector<std::string> const& doSharedResources() const override { return theSharedResources; }

    static const std::vector<std::string> theSharedResources;

    //-- methods
    
    void flushTmpStorage();
    void fillTmpStorage();
    void imposeProperTime();  //-- to correctly treat particle decay
    
    //-- data members
    
    edm::ParameterSet fParameters;
    
    Pythia6Service* fPy6Service;

    double fComEnergy ;  //-- irrelevant for setting py6 as hadronizer (or if anything, it should be picked up from LHERunInfoProduct)
    double fextCrossSection;
    double fextCrossSectionError;
    double fFilterEfficiency;
    
    unsigned int    fMaxEventsToPrint ;
    bool            fHepMCVerbosity;
    unsigned int    fPythiaListVerbosity ; //-- p6 specific
    
    bool            fDisplayPythiaBanner;  //-- p6 specific
    bool            fDisplayPythiaCards;   //-- p6 specific
    
    bool fConvertToPDG; //-- conversion of Py6 PID's into PDG convention
  };
}

#endif