EvtScalarParticle.cc

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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: EvtScalarParticle.cc
//
// Description: Class to describe scalar particles
//
// Modification history:
//
//    DJL/RYD   September 25, 1996           Module created
//
//------------------------------------------------------------------------
//
#include "EvtScalarParticle.hh"
#include "EvtPatches.hh"
#include "EvtVector4R.hh"
#include <iostream>
#include <math.h>
 
void EvtScalarParticle::init( EvtId part_n, double e, double px, double py, double pz ) {
 
  _validP4 = true;
  setp( e, px, py, pz );
  setpart_num( part_n );
 
  setLifetime();
}
 
EvtScalarParticle::~EvtScalarParticle() {}
 
void EvtScalarParticle::init( EvtId part_n, const EvtVector4R& p4 ) {
 
  _validP4 = true;
  setp( p4 );
  setpart_num( part_n );
 
  setLifetime();
}
 
EvtSpinDensity EvtScalarParticle::rotateToHelicityBasis() const {
 
  EvtSpinDensity R;
  R.SetDim( 1 );
 
  R.Set( 0, 0, 1.0 );
 
  return R;
}
 
EvtSpinDensity EvtScalarParticle::rotateToHelicityBasis( double alpha, double beta,
                                                         double gamma ) const {
 
  EvtSpinDensity R;
  R.SetDim( 1 );
 
  R.Set( 0, 0, 1.0 );
 
  return R;
}