EvtRareLbToLllFFBase.hh
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EvtRareLbToLllFFBase.hh
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	#ifndef EVTRARELBTOLLLFFBASE_HH
	#define EVTRARELBTOLLLFFBASE_HH 1

	// Include files

	/** @class
	*
	*
	* @author Michal Kreps
	* @date 2014-10-20
	*/

	#include "EvtGenBase/EvtParticle.hh"
	#include "EvtGenBase/EvtIdSet.hh"

	#include <string>
	#include <map>

	class EvtRareLbToLllFFBase {

	public:

	class FormFactors
	{
	public:
	FormFactors() ;

	virtual ~FormFactors() {} ;

	void areZero() ;

	double F_[4];
	double G_[4];
	double FT_[4];
	double GT_[4];
	};

	virtual void init() = 0 ;

	virtual void getFF( EvtParticle* parent,
	EvtParticle* lambda,
	EvtRareLbToLllFFBase::FormFactors& FF ) = 0;

	bool isNatural( EvtParticle* lambda ) ;

	EvtRareLbToLllFFBase( );
	virtual ~EvtRareLbToLllFFBase( ) {};

	protected:

	double calculateVdotV( EvtParticle* parent, EvtParticle* lambda ) const ;
	double calculateVdotV(EvtParticle, EvtParticle, double qsq) const;

	EvtIdSet natural_;

	};

	#endif