Kalman filter mother particle fitter for the BM@N detector. More...

#include <BmnMotherFitterPart.h>

Inheritance diagram for BmnMotherFitterPart:

Collaboration diagram for BmnMotherFitterPart:

Public Member Functions
virtual void	Exec (Option_t *option)

void	Reset ()

void	Register ()

Double_t	BuildMother (BmnParticle mother, vector< BmnParticle > &vDaught)

Double_t	FindVertex (vector< BmnParticle * > vDaught, TVector3 &vtx)

Bool_t	ComputeAandB (const TMatrixD &xk0, const BmnParticle &part, TMatrixD &a, TMatrixD &b, TMatrixD &ck0, Bool_t flag=kTRUE)

Double_t	FieldConst () const

TMatrixD	ComputeQmatr (vector< BmnParticle * > vDaught)

TMatrixD &	GetCovariance ()

Double_t	Chi2Vertex (BmnParticle part, const CbmVertex vtx)
	compute Chi2 w.r.t. vertex

virtual void	Exec (Option_t *option)

void	Reset ()

void	Register ()

Double_t	BuildMother (BmnParticle mother, vector< BmnParticle > &vDaught)

Double_t	FindVertex (vector< BmnParticle * > vDaught, TVector3 &vtx)

Bool_t	ComputeAandB (const TMatrixD &xk0, const BmnParticle &part, TMatrixD &a, TMatrixD &b, TMatrixD &ck0, Bool_t flag=kTRUE)

Double_t	FieldConst () const

TMatrixD	ComputeQmatr (vector< BmnParticle * > vDaught)

TMatrixD &	GetCovariance ()

Double_t	Chi2Vertex (BmnParticle part, const CbmVertex vtx)
	compute Chi2 w.r.t. vertex

Static Public Member Functions
static BmnMotherFitterPart *	Instance ()
	get singleton instance

static BmnMotherFitterPart *	Instance (const char name, const char title="FAIR Task")
	get singleton instance

static BmnMotherFitterPart *	Instance ()
	get singleton instance

static BmnMotherFitterPart *	Instance (const char name, const char title="FAIR Task")
	get singleton instance

Protected Member Functions
virtual InitStatus	Init ()

virtual InitStatus	ReInit ()

virtual void	Finish ()

virtual	~BmnMotherFitterPart ()
	Destructor.

virtual InitStatus	Init ()

virtual InitStatus	ReInit ()

virtual void	Finish ()

virtual	~BmnMotherFitterPart ()
	Destructor.

Detailed Description

Kalman filter mother particle fitter for the BM@N detector.

(using BmnParticle)

Author: Alexander Zinchenko, LHEP JINR Dubna

Kalman filter mother particle fitter for the BM@N detector (using BmnParticle)

Author: Alexander Zinchenko (LHEP, JINR, Dubna) 03-07-2025

Definition at line 27 of file BmnMotherFitterPart.h.

Constructor & Destructor Documentation

◆ ~BmnMotherFitterPart() [1/2]

BmnMotherFitterPart::~BmnMotherFitterPart ( )

protectedvirtual

Destructor.

Destructor

Definition at line 85 of file BmnMotherFitterPart.cxx.

◆ ~BmnMotherFitterPart() [2/2]

virtual BmnMotherFitterPart::~BmnMotherFitterPart ( )

protectedvirtual

Destructor.

Member Function Documentation

◆ BuildMother() [1/2]

Double_t BmnMotherFitterPart::BuildMother	(	BmnParticle *	mother,
		vector< BmnParticle * > &	vDaught
	)

Build mother particle from daughters which were smoothed according to the decay vertex constraint (after FindVertex)

Definition at line 150 of file BmnMotherFitterPart.cxx.

References BmnParticle::AddDaughter(), ComputeAandB(), ComputeQmatr(), BmnParticle::FillJ(), BmnParticle::FillJinv(), FindVertex(), BmnParticle::GetA(), BmnParticle::GetB(), BmnParticle::GetCharge(), GetCovariance(), BmnParticle::GetE(), BmnParticle::GetIndx(), BmnParticle::GetJ(), BmnParticle::GetJinv(), BmnParticle::GetMass(), BmnParticle::GetNDF(), BmnParticle::Getx(), i, Instance(), BmnParticle::Momentum3(), BmnParticle::ParamsAtDca(), BmnParticle::SetCharge(), BmnParticle::SetChi2(), BmnParticle::SetG(), BmnParticle::SetMass(), BmnParticle::SetNDF(), BmnParticle::Setq(), BmnParticle::Setx(), and BmnParticle::SetZ().

Referenced by BmnParticle::BuildMother().

◆ BuildMother() [2/2]

Double_t BmnMotherFitterPart::BuildMother	(	BmnParticle *	mother,
		vector< BmnParticle * > &	vDaught
	)

◆ Chi2Vertex() [1/2]

Double_t BmnMotherFitterPart::Chi2Vertex	(	BmnParticle *	part,
		const CbmVertex *	vtx
	)

compute Chi2 w.r.t. vertex

Compute Chi2 w.r.t. vertex

Definition at line 1025 of file BmnMotherFitterPart.cxx.

References ComputeAandB(), CbmVertex::CovMatrix(), BmnParticle::GetG(), BmnParticle::GetMeas(), CbmVertex::GetX(), CbmVertex::GetY(), CbmVertex::GetZ(), and m.

Referenced by BmnParticle::Chi2Vertex().

◆ Chi2Vertex() [2/2]

Double_t BmnMotherFitterPart::Chi2Vertex	(	BmnParticle *	part,
		const CbmVertex *	vtx
	)

compute Chi2 w.r.t. vertex

◆ ComputeAandB() [1/2]

Bool_t BmnMotherFitterPart::ComputeAandB	(	const TMatrixD &	xk0,
		const BmnParticle &	part,
		TMatrixD &	a,
		TMatrixD &	b,
		TMatrixD &	ck0,
		Bool_t	flag = `kTRUE`
	)

Compute matrices of derivatives w.r.t. vertex coordinates and particle momentum

Definition at line 695 of file BmnMotherFitterPart.cxx.

References CbmKFTrackInterface::Extrapolate(), BmnParticle::GetCharge(), CbmKFTrack::GetCovMatrix(), BmnParticle::GetKFTrack(), CbmKFTrack::GetTrack(), BmnParticle::GetZ0(), i, CbmKFMath::indexS(), and CbmKFTrackInterface::Propagate().

Referenced by BuildMother(), Chi2Vertex(), and FindVertex().

◆ ComputeAandB() [2/2]

Bool_t BmnMotherFitterPart::ComputeAandB	(	const TMatrixD &	xk0,
		const BmnParticle &	part,
		TMatrixD &	a,
		TMatrixD &	b,
		TMatrixD &	ck0,
		Bool_t	flag = `kTRUE`
	)

◆ ComputeQmatr() [1/2]

TMatrixD BmnMotherFitterPart::ComputeQmatr ( vector< BmnParticle * > vDaught )

Compute matrix Q = covariance cov(qk,qj) Qkj = Wk*Bkt*Gk*Ak*C*Ajt*Gj*Bj*Wj = Wk*Bkt*Gk*Ak*(-E), k!=j Qii = D

Definition at line 946 of file BmnMotherFitterPart.cxx.

References BmnParticle::GetA(), BmnParticle::GetB(), BmnParticle::GetCharge(), BmnParticle::GetD(), BmnParticle::GetE(), BmnParticle::GetG(), BmnParticle::GetJ(), BmnParticle::GetW(), and i.

Referenced by BuildMother().

◆ ComputeQmatr() [2/2]

TMatrixD BmnMotherFitterPart::ComputeQmatr ( vector< BmnParticle * > vDaught )

◆ Exec() [1/2]

void BmnMotherFitterPart::Exec ( Option_t * option )

virtual

Definition at line 143 of file BmnMotherFitterPart.cxx.

◆ Exec() [2/2]

virtual void BmnMotherFitterPart::Exec ( Option_t * option )

virtual

◆ FieldConst() [1/2]

Double_t BmnMotherFitterPart::FieldConst ( ) const

inline

Definition at line 54 of file BmnMotherFitterPart.h.

◆ FieldConst() [2/2]

Double_t BmnMotherFitterPart::FieldConst ( ) const

inline

Definition at line 54 of file BmnMotherFitterPart.h.

◆ FindVertex() [1/2]

Double_t BmnMotherFitterPart::FindVertex	(	vector< BmnParticle * >	vDaught,
		TVector3 &	vtx
	)

Kalman filter based secondary vertex fitter

Definition at line 454 of file BmnMotherFitterPart.cxx.

References ComputeAandB(), BmnParticle::GetG(), BmnParticle::GetMeas(), i, and m.

Referenced by BuildMother().

◆ FindVertex() [2/2]

Double_t BmnMotherFitterPart::FindVertex	(	vector< BmnParticle * >	vDaught,
		TVector3 &	vtx
	)

◆ Finish() [1/2]

void BmnMotherFitterPart::Finish ( )

protectedvirtual

Definition at line 137 of file BmnMotherFitterPart.cxx.

◆ Finish() [2/2]

virtual void BmnMotherFitterPart::Finish ( )

protectedvirtual

◆ GetCovariance() [1/2]

TMatrixD & BmnMotherFitterPart::GetCovariance ( )

inline

Definition at line 56 of file BmnMotherFitterPart.h.

Referenced by BuildMother().

◆ GetCovariance() [2/2]

TMatrixD & BmnMotherFitterPart::GetCovariance ( )

inline

Definition at line 56 of file BmnMotherFitterPart.h.

◆ Init() [1/2]

InitStatus BmnMotherFitterPart::Init ( )

protectedvirtual

Definition at line 93 of file BmnMotherFitterPart.cxx.

Referenced by Instance(), and Instance().

◆ Init() [2/2]

virtual InitStatus BmnMotherFitterPart::Init ( )

protectedvirtual

◆ Instance() [1/4]

BmnMotherFitterPart * BmnMotherFitterPart::Instance ( )

static

get singleton instance

Get pointer to the mother fitter singleton object

Definition at line 59 of file BmnMotherFitterPart.cxx.

References Init().

Referenced by BuildMother(), BmnParticle::BuildMother(), and BmnParticle::Chi2Vertex().

◆ Instance() [2/4]

static BmnMotherFitterPart * BmnMotherFitterPart::Instance ( )

static

get singleton instance

◆ Instance() [3/4]

BmnMotherFitterPart * BmnMotherFitterPart::Instance	(	const char *	name,
		const char *	title = `"FAIR Task"`
	)

static

get singleton instance

Get pointer to the mother fitter singleton object

Definition at line 72 of file BmnMotherFitterPart.cxx.

References Init().

◆ Instance() [4/4]

static BmnMotherFitterPart * BmnMotherFitterPart::Instance	(	const char *	name,
		const char *	title = `"FAIR Task"`
	)

static

get singleton instance

◆ Register() [1/2]

void BmnMotherFitterPart::Register ( )

Definition at line 129 of file BmnMotherFitterPart.cxx.

◆ Register() [2/2]

void BmnMotherFitterPart::Register ( )

◆ ReInit() [1/2]

InitStatus BmnMotherFitterPart::ReInit ( )

protectedvirtual

Definition at line 115 of file BmnMotherFitterPart.cxx.

◆ ReInit() [2/2]

virtual InitStatus BmnMotherFitterPart::ReInit ( )

protectedvirtual

◆ Reset() [1/2]

void BmnMotherFitterPart::Reset ( )

Definition at line 122 of file BmnMotherFitterPart.cxx.

◆ Reset() [2/2]

void BmnMotherFitterPart::Reset ( )

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

install/include/BmnMotherFitterPart.h
reconstruction/KF/BmnMotherFitterPart.h
reconstruction/KF/BmnMotherFitterPart.cxx

Public Member Functions

Static Public Member Functions

Protected Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ ~BmnMotherFitterPart() [1/2]

◆ ~BmnMotherFitterPart() [2/2]

Member Function Documentation

◆ BuildMother() [1/2]

◆ BuildMother() [2/2]

◆ Chi2Vertex() [1/2]

◆ Chi2Vertex() [2/2]

◆ ComputeAandB() [1/2]

◆ ComputeAandB() [2/2]

◆ ComputeQmatr() [1/2]

◆ ComputeQmatr() [2/2]

◆ Exec() [1/2]

◆ Exec() [2/2]

◆ FieldConst() [1/2]

◆ FieldConst() [2/2]

◆ FindVertex() [1/2]

◆ FindVertex() [2/2]

◆ Finish() [1/2]

◆ Finish() [2/2]

◆ GetCovariance() [1/2]

◆ GetCovariance() [2/2]

◆ Init() [1/2]

◆ Init() [2/2]

◆ Instance() [1/4]

◆ Instance() [2/4]

◆ Instance() [3/4]

◆ Instance() [4/4]

◆ Register() [1/2]

◆ Register() [2/2]

◆ ReInit() [1/2]

◆ ReInit() [2/2]

◆ Reset() [1/2]

◆ Reset() [2/2]