EvtMParticle.cc

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#include "EvtMParticle.hh"
#include "EvtPatches.hh"
#include "EvtSpinType.hh"
 
EvtMParticle::EvtMParticle( int label, const EvtId& id ) {
  _id      = id;
  _twospin = EvtSpinType::getSpin2( EvtPDL::getSpinType( id ) );
  _resonance.push_back( label );
}
 
EvtSpinAmp EvtMParticle::amplitude( const vector<EvtVector4R>& product ) const {
  vector<EvtSpinType::spintype> types( 2, getspintype() );
  EvtSpinAmp                    amp( types, EvtComplex( 0.0, 0.0 ) );
 
  for ( int i = -_twospin; i <= _twospin; i += 2 ) amp( i, i ) = EvtComplex( 1.0, 0.0 );
 
  return amp;
}
 
EvtMNode* EvtMParticle::duplicate() const { return new EvtMParticle( _resonance[0], _id ); }