this class does a lot of stuff: Build decaytree structure allowing to index particles and handle the filtering of constraints across the tree More...

#include <DecayChain.h>

Collaboration diagram for DecayChain:

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Public Member Functions
	DecayChain ()
	empty constructor

	DecayChain (Belle2::Particle *bc, const ConstraintConfiguration &config, bool forceFitAll=false)
	constructor

	~DecayChain ()
	destructor

ErrCode	initialize (FitParams &par)
	initalize the chain

ErrCode	filter (FitParams &par)
	filter down the chain

ErrCode	filterWithReference (FitParams &par, const FitParams &ref)
	filter with respect to a previous iteration for better stability

int	dim () const
	get dimension

void	initConstraintList ()
	init contraintlist

void	removeConstraintFromList ()
	remove constraints from list

double	chiSquare (const FitParams &par) const
	get the chi2 for the head of the chain

ParticleBase *	mother ()
	get mother

const ParticleBase *	cand ()
	get candidate

const ParticleBase *	mother () const
	get mother

const ParticleBase *	locate (Belle2::Particle *bc) const
	convert Belle2::particle into particle base(fitter base particle)

int	index (Belle2::Particle *bc) const
	get the particle index

int	posIndex (Belle2::Particle *bc) const
	get the vertex index of the particle in state vector

int	momIndex (Belle2::Particle *bc) const
	get momentum index of the particle in the state vector

int	tauIndex (Belle2::Particle *bc) const
	get tau (i.e. More...

int	momIndex () const
	!NOT IMPLEMENTED

Private Types
typedef std::map< Belle2::Particle , const ParticleBase >	ParticleMap
	typedef for a map of a particle to a TreeFitter::ParticleBase

Private Attributes
int	m_dim
	the dimension of constraint

ParticleBase *	m_headOfChain
	head of decay tree

const ParticleBase *	m_cand
	fit candidate (not same to mother in case of bs/be constraint)

ParticleBase::constraintlist	m_constraintlist
	list of constraints

ParticleMap	m_particleMap
	the map from Belle2::Particles to TreeFitter::ParticleBase

const bool	m_isOwner
	internal class member to check if we own the chain

const ConstraintConfiguration	m_config
	config container

Detailed Description

this class does a lot of stuff: Build decaytree structure allowing to index particles and handle the filtering of constraints across the tree

Definition at line 34 of file DecayChain.h.

Member Function Documentation

int tauIndex ( Belle2::Particle * bc ) const

get tau (i.e.

decay lifetime) index of the particle in the state vector

Definition at line 172 of file DecayChain.cc.

The documentation for this class was generated from the following files: