EvtVub.hh
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EvtVub.hh
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	//--------------------------------------------------------------------------
	//
	// Environment:
	// This software is part of the EvtGen package developed jointly
	// for the BaBar and CLEO collaborations. If you use all or part
	// of it, please give an appropriate acknowledgement.
	//
	// Copyright Information: See EvtGen/COPYRIGHT
	// Copyright (C) 1998 Caltech, UCSB
	//
	// Module: EvtGen/EvtVub.hh
	//
	// Description:
	// Class to generate inclusive B to X_u l nu decays according to various
	// decay models. Implemtented are ACCM, parton-model and a QCD model.
	//
	// Modification history:
	//
	// Sven Menke January 17, 2001 Module created
	//
	//------------------------------------------------------------------------

	#ifndef EVTVUB_HH
	#define EVTVUB_HH

	#include "EvtGenBase/EvtDecayIncoherent.hh"

	#include <vector>

	class EvtParticle;
	class EvtVubdGamma;

	class EvtVub:public EvtDecayIncoherent {

	public:

	EvtVub() : _masses(0) , _weights(0) , _dGamma(0) {}
	virtual ~EvtVub();

	std::string getName();

	EvtDecayBase* clone();

	void initProbMax();

	void init();

	void decay(EvtParticle *p);

	private:

	double _mb; // the b-quark pole mass in GeV (try 4.65 to 4.9)
	double _a; // Parameter for the Fermi Motion (1.29 is good)
	double _alphas; // Strong Coupling at m_b (around 0.24)
	double _dGMax; // max dGamma*p2 value;
	int _nbins;
	int _storeQplus;
	double * _masses;
	double * _weights;

	EvtVubdGamma *_dGamma; // calculates the decay rate
	double findPFermi();
	std::vector<double> _pf;
	};

	#endif