#include <EvtMTree.hh>

Public Member Functions
	EvtMTree (const EvtId *idtbl, int ndaug)

	~EvtMTree ()

EvtSpinAmp	amplitude (const vector< EvtVector4R > &product) const

void	addtree (const string &args)

Detailed Description

Definition at line 21 of file EvtMTree.hh.

Constructor & Destructor Documentation

◆ EvtMTree()

EvtMTree::EvtMTree	(	const EvtId *	idtbl,
		int	ndaug
	)

Definition at line 20 of file EvtMTree.cc.

{
    for( int i=0; i<ndaug; ++i ) {
        _lbltbl.push_back( EvtPDL::name( idtbl[i] ) );
    }
}

◆ ~EvtMTree()

EvtMTree::~EvtMTree ( )

Definition at line 27 of file EvtMTree.cc.

{
    for(int i=0; i<_root.size(); ++i) delete _root[i];
}

Member Function Documentation

◆ addtree()

void EvtMTree::addtree ( const string & args )

Definition at line 379 of file EvtMTree.cc.

{
    vector<EvtMNode *> roots = parsenode( str, true );
    _norm = 0;
 
    for( int i=0; i<roots.size(); ++i ) {
        if( validTree( roots[i] ) ) {
            _root.push_back( roots[i] );
            _norm = _norm + 1;
        } else
            delete roots[i];
    }
    
    _norm = 1.0/sqrt(_norm);
}

Referenced by EvtMultibody::init().

◆ amplitude()

EvtSpinAmp EvtMTree::amplitude ( const vector< EvtVector4R > & product ) const

Definition at line 395 of file EvtMTree.cc.

{
    if( _root.size() == 0 ) {
        report(ERROR, "EvtGen")<<"No decay tree present."<<endl;
        ::abort();
    }
    
    EvtSpinAmp amp = _root[0]->amplitude( product );
    for( int i=1; i<_root.size(); ++i ) {
        // Assume that helicity amplitude is returned and rotate to standard
        // amplitude here, do this before adding the amplitudes (different
        // frames?)
        amp += _root[i]->amplitude( product );
    }
 
    return _norm*amp;
}

Referenced by EvtMultibody::decay().

The documentation for this class was generated from the following files: