EvtRaritaSchwingerParticle.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/EvtRaritaSchwingerParticle.hh
//
// Description:Represents particles i.e. spin 3/2 particles.
//
// Modification history:
//
//    RYD     August 9, 2000         Module created
//
//------------------------------------------------------------------------
 
#ifndef EVTRARITASCHWINGERPARTICLE_HH
#define EVTRARITASCHWINGERPARTICLE_HH
 
#include "EvtId.hh"
#include "EvtParticle.hh"
#include "EvtRaritaSchwinger.hh"
 
class EvtVector4R;
 
class EvtRaritaSchwingerParticle : public EvtParticle {
 
public:
  EvtRaritaSchwingerParticle();
  virtual ~EvtRaritaSchwingerParticle();
  void               init( EvtId id, const EvtVector4R& p4 );
  EvtRaritaSchwinger spRSParent( int ) const;
  EvtRaritaSchwinger spRS( int ) const;
  EvtSpinDensity     rotateToHelicityBasis() const;
  EvtSpinDensity     rotateToHelicityBasis( double alpha, double beta, double gamma ) const;
 
private:
  EvtRaritaSchwinger _spinorRest[4];
  EvtRaritaSchwinger _spinor[4];
  EvtRaritaSchwingerParticle( const EvtRaritaSchwingerParticle& d );
  EvtRaritaSchwingerParticle& operator=( const EvtRaritaSchwingerParticle& d );
};
#endif