EvtScalarParticle.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/EvtScalarParticle.hh
//
// Description:Class to describe all spin 0 particles.
//
// Modification history:
//
//    DJL/RYD     September 25, 1996         Module created
//
//------------------------------------------------------------------------
 
#ifndef EVTSCALARPARTICLE_HH
#define EVTSCALARPARTICLE_HH
 
#include "EvtParticle.hh"
// #include "EvtId.hh"
class EvtId;
 
// Class to handle SCALAR particles.  Not much to do.
 
class EvtScalarParticle : public EvtParticle {
 
public:
  EvtScalarParticle() {}
  virtual ~EvtScalarParticle();
 
  void init( EvtId part_n, double e, double px, double py, double pz );
  void init( EvtId part_n, const EvtVector4R& p );
 
  EvtSpinDensity rotateToHelicityBasis() const;
  EvtSpinDensity rotateToHelicityBasis( double alpha, double beta, double gamma ) const;
 
private:
  EvtScalarParticle( const EvtScalarParticle& scalar );
  EvtScalarParticle& operator=( const EvtScalarParticle& scalar );
};
 
#endif