Differential D58 Diff 258 EvtGenBase/EvtMassAmp.hh

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EvtGenBase/EvtMassAmp.hh

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	#ifndef EVT_MASSAMP_HH			#ifndef EVT_MASSAMP_HH
	#define EVT_MASSAMP_HH			#define EVT_MASSAMP_HH

	#include "EvtGenBase/EvtAmplitude.hh"			#include "EvtGenBase/EvtAmplitude.hh"
	#include "EvtGenBase/EvtPoint1D.hh"			#include "EvtGenBase/EvtPoint1D.hh"
	#include "EvtGenBase/EvtPropBreitWignerRel.hh"			#include "EvtGenBase/EvtPropBreitWignerRel.hh"
	#include "EvtGenBase/EvtTwoBodyVertex.hh"			#include "EvtGenBase/EvtTwoBodyVertex.hh"

				#include <memory>
	// Relativistic lineshape for a two-body decay of a resonance to two			// Relativistic lineshape for a two-body decay of a resonance to two
	// pseudoscalars. The mass dependence of the width and the vertex factors			// pseudoscalars. The mass dependence of the width and the vertex factors
	// are included in the calculation.			// are included in the calculation.

	class EvtMassAmp : public EvtAmplitude<EvtPoint1D> {			class EvtMassAmp : public EvtAmplitude<EvtPoint1D> {
	public:			public:
	EvtMassAmp( const EvtPropBreitWignerRel& prop, const EvtTwoBodyVertex& vd );			EvtMassAmp( const EvtPropBreitWignerRel& prop, const EvtTwoBodyVertex& vd );
	EvtMassAmp( const EvtMassAmp& other );			EvtMassAmp( const EvtMassAmp& other );
	EvtMassAmp& operator=( const EvtMassAmp& other );			EvtMassAmp& operator=( const EvtMassAmp& other );

	EvtComplex amplitude( const EvtPoint1D& p ) const override;			EvtComplex amplitude( const EvtPoint1D& p ) const override;

	EvtAmplitude<EvtPoint1D>* clone() const override			EvtAmplitude<EvtPoint1D>* clone() const override
	{			{
	return new EvtMassAmp( *this );			return new EvtMassAmp( *this );
	}			}

	void setBirthVtx( const EvtTwoBodyVertex& vb )			void setBirthVtx( const EvtTwoBodyVertex& vb )
	{			{
	_vb = std::make_unique<EvtTwoBodyVertex>( vb );			m_vb = std::make_unique<EvtTwoBodyVertex>( vb );
	}			}

	void addBirthFact() { _useBirthFact = true; }			void addBirthFact() { m_useBirthFact = true; }
	void addDeathFact() { _useDeathFact = true; }			void addDeathFact() { m_useDeathFact = true; }
	void addBirthFactFF() { _useBirthFactFF = true; }			void addBirthFactFF() { m_useBirthFactFF = true; }
	void addDeathFactFF() { _useDeathFactFF = true; }			void addDeathFactFF() { m_useDeathFactFF = true; }

	private:			private:
	EvtPropBreitWignerRel _prop;			EvtPropBreitWignerRel m_prop;
	EvtTwoBodyVertex _vd;			EvtTwoBodyVertex m_vd;
	std::unique_ptr<EvtTwoBodyVertex> _vb;			std::unique_ptr<EvtTwoBodyVertex> m_vb;

	bool _useBirthFact;			bool m_useBirthFact;
	bool _useDeathFact;			bool m_useDeathFact;
	bool _useBirthFactFF;			bool m_useBirthFactFF;
	bool _useDeathFactFF;			bool m_useDeathFactFF;
	};			};

	#endif			#endif