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EvtMRes.hh
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/***********************************************************************
* Copyright 1998-2020 CERN for the benefit of the EvtGen authors *
* *
* This file is part of EvtGen. *
* *
* EvtGen is free software: you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation, either version 3 of the License, or *
* (at your option) any later version. *
* *
* EvtGen is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with EvtGen. If not, see <https://www.gnu.org/licenses/>. *
***********************************************************************/
#ifndef __EVTMRES_HH__
#define __EVTMRES_HH__
#include "EvtGenBase/EvtMNode.hh"
class EvtMRes;
class EvtMLineShape {
public:
virtual ~EvtMLineShape(){};
void setres( EvtMRes* n ) { _node = n; }
virtual EvtComplex shape( const vector<EvtVector4R>& product ) const = 0;
virtual EvtMLineShape* duplicate() const = 0;
protected:
EvtMRes* _node;
};
class EvtMRes : public EvtMNode {
public:
~EvtMRes();
int getnchild() const override { return _children.size(); }
EvtComplex line( const vector<EvtVector4R>& product ) const override
{
return _lineshape->shape( product );
}
protected:
// store the child nodes
vector<EvtMNode*> _children;
// store the parametrization amplitudes in some kind
EvtSpinAmp _amp;
// store the lineshape of the resonance
EvtMLineShape* _lineshape;
};
#endif

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