EvtSpinType.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 EvtGen/COPYRIGHT
//      Copyright (C) 1998      Caltech, UCSB
//
// Module: EvtGen/EvtSpinType.hh
//
// Description: Class for enumarating the different types of
//              particles and the number of states they have.
//
// Modification history:
//
//    RYD     August 12, 1998         Module created
//
//------------------------------------------------------------------------
 
#ifndef EVTSPINTYPE_HH
#define EVTSPINTYPE_HH
 
#include "EvtGenBase/EvtReport.hh"
 
class EvtSpinType{
 
public:
 
  enum spintype { SCALAR,VECTOR,TENSOR,DIRAC,PHOTON,NEUTRINO,STRING,
                  RARITASCHWINGER,SPIN3,SPIN4,SPIN5HALF,SPIN7HALF};
 
  static int getSpin2(spintype stype){
 
    switch (stype){
    case SCALAR: case STRING:
      return 0;
    case DIRAC: case NEUTRINO:
      return 1;
    case VECTOR: case PHOTON: 
      return 2;
    case RARITASCHWINGER:
      return 3;
    case TENSOR:
      return 4;
    case SPIN5HALF:
      return 5;
    case SPIN3:
      return 6;
    case SPIN7HALF:
      return 7;
    case SPIN4:
      return 8;
    default:
      report(ERROR,"EvtGen")<<"Unknown spintype in EvtSpinType!"<<std::endl;
      return 0;
    }
 
  }
 
 
 
  static int getSpinStates(spintype stype){
 
    switch (stype){
    case SCALAR: case STRING: case NEUTRINO:
      return 1;
    case DIRAC: case PHOTON:
      return 2;
    case VECTOR: 
      return 3;
    case RARITASCHWINGER:
      return 4;
    case TENSOR:
      return 5;
    case SPIN5HALF:
      return 6;
    case SPIN3:
      return 7;
    case SPIN7HALF:
      return 8;
    case SPIN4:
      return 9;
    default:
      report(ERROR,"EvtGen")<<"Unknown spintype in EvtSpinType!"<<std::endl;
      return 0;
    }
 
  }
 
private:
 
}; 
 
#endif