EvtNeutrinoParticle.hh
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EvtNeutrinoParticle.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/EvtNeutrinoParticle.hh
	//
	// Description:Class to describe neutrinos
	//
	// Modification history:
	//
	// RYD September 25, 1996 Module created
	//
	//------------------------------------------------------------------------

	#ifndef EVTNEUTRINOPARTICLE_HH
	#define EVTNEUTRINOPARTICLE_HH

	#include "EvtGenBase/EvtDiracSpinor.hh"
	#include "EvtGenBase/EvtParticle.hh"
	class EvtId;
	class EvtVector4R;

	class EvtNeutrinoParticle:public EvtParticle {

	public:

	EvtNeutrinoParticle();
	virtual ~EvtNeutrinoParticle();
	void init(EvtId part_n,const EvtVector4R& p4);
	EvtDiracSpinor spParentNeutrino() const;
	EvtDiracSpinor spNeutrino() const;
	EvtSpinDensity rotateToHelicityBasis() const;
	EvtSpinDensity rotateToHelicityBasis(double alpha,
	double beta,
	double gamma) const;

	private:

	EvtDiracSpinor spinor_rest;
	EvtDiracSpinor spinor_parent;

	EvtNeutrinoParticle(const EvtNeutrinoParticle& n);
	EvtNeutrinoParticle& operator=(const EvtNeutrinoParticle& n);

	};
	#endif