EvtPythia.hh

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//--------------------------------------------------------------------------
//
// Environment:
//      This software is part of the EvtGen package developed jointly
//      for the BaBar and CLEO collaborations.  If you use all or part
//      of it, please give an appropriate acknowledgement.
//
// Copyright Information: See BelEvtGen/COPYRIGHT
//      Copyright (C) 1998      Caltech, UCSB
//
// Module: BelEvtGen/EvtJetSet.hh
//
// Description:
//
// Modification history:
//
//    DJL/RYD     August 11, 1998         Module created
//    RS          October 28, 2002        copied from JETSET module
//
//------------------------------------------------------------------------
 
#ifndef EVTPYTHIA_HH
#define EVTPYTHIA_HH
 
#include "../EvtGenBase/EvtDecayIncoherent.hh"
#include "../EvtGenBase/EvtParticle.hh"
#include <iosfwd>
#include <string>
 
typedef EvtDecayBase* EvtDecayBasePtr;
 
class EvtPythia : public EvtDecayIncoherent {
 
public:
  EvtPythia();
  virtual ~EvtPythia();
 
  void          getName( std::string& name );
  EvtDecayBase* clone();
  void          decay( EvtParticle* p );
 
  std::string commandName();
  void        command( std::string cmd );
 
  void init();
 
  void initProbMax();
 
  // initialize jetset; sets up decay table and
  // paramters. Static so it can be invoked from
  // from EvtJscont.
  static void pythiaInit( int f );
  static void pythiacont( double*, int*, int*, double*, double*, double*, double* );
 
private:
  void          store( EvtDecayBase* jsdecay );
  void          fixPolarizations( EvtParticle* p );
  static void   MakePythiaFile( char* fname );
  static void   WritePythiaParticle( std::ofstream& outdec, EvtId ipar, EvtId iparname,
                                     int& first );
  static void   WritePythiaEntryHeader( std::ofstream& outdec, int lundkc, EvtId evtnum,
                                        std::string name, int chg, int cchg, int spin2,
                                        double mass, double width, double maxwidth, double ctau,
                                        int stable, double rawbrfrsum );
  static bool   diquark( int );
  static double NominalMass( int );
  static int    njetsetdecays;
  static EvtDecayBasePtr* jetsetdecays;
  static int              ntable;
 
  static int          ncommand;
  static int          lcommand;
  static std::string* commands;
};
 
#endif