KFParticleBaseSIMD Class Reference

The base of KFParticleSIMD class. More...

#include <KFParticle/blob/master/KFParticle/KFParticleBaseSIMD.h>

Inheritance diagram for KFParticleBaseSIMD:

Collaboration diagram for KFParticleBaseSIMD:

Public Member Functions
void *	operator new (size_t size)
	new operator for allocation of the SIMD-alligned dynamic memory allocation
void *	operator new[] (size_t size)
	new operator for allocation of the SIMD-alligned dynamic memory allocation
void *	operator new (size_t size, void *ptr)
	new operator for allocation of the SIMD-alligned dynamic memory allocation
void *	operator new[] (size_t size, void *ptr)
	new operator for allocation of the SIMD-alligned dynamic memory allocation
void	operator delete (void *ptr, size_t)
	delete operator for the SIMD-alligned dynamic memory release
void	operator delete[] (void *ptr, size_t)
	delete operator for the SIMD-alligned dynamic memory release
virtual void	GetFieldValue (const float_v xyz[], float_v B[]) const =0
virtual float_v	GetDStoPoint (const float_v xyz[3], float_v dsdr[6]) const =0
float_v	GetDStoPointLine (const float_v xyz[3], float_v dsdr[6]) const
float_v	GetDStoPointBz (float_v Bz, const float_v xyz[3], float_v dsdr[6], const float_v *param=0) const
float_v	GetDStoPointBy (float_v By, const float_v xyz[3], float_v dsdr[6]) const
float_v	GetDStoPointCBM (const float_v xyz[3], float_v dsdr[6]) const
virtual void	GetDStoParticle (const KFParticleBaseSIMD &p, float_v dS[2], float_v dsdr[4][6]) const =0
virtual void	GetDStoParticleFast (const KFParticleBaseSIMD &p, float_v dS[2]) const =0
void	GetDStoParticleLine (const KFParticleBaseSIMD &p, float_v dS[2], float_v dsdr[4][6]) const
void	GetDStoParticleLine (const KFParticleBaseSIMD &p, float_v dS[2]) const
void	GetDStoParticleBz (float_v Bz, const KFParticleBaseSIMD &p, float_v dS[2], float_v dsdr[4][6], const float_v *param1=0, const float_v *param2=0) const
void	GetDStoParticleBz (float_v Bz, const KFParticleBaseSIMD &p, float_v dS[2], const float_v *param1=0, const float_v *param2=0) const
void	GetDStoParticleBy (float_v B, const KFParticleBaseSIMD &p, float_v dS[2], float_v dsdr[4][6]) const
void	GetDStoParticleBy (float_v B, const KFParticleBaseSIMD &p, float_v dS[2]) const
void	GetDStoParticleB (float_v B[3], const KFParticleBaseSIMD &p, float_v dS[2], float_v dsdr[4][6]) const
void	GetDStoParticleB (float_v B[3], const KFParticleBaseSIMD &p, float_v dS[2]) const
void	GetDStoParticleCBM (const KFParticleBaseSIMD &p, float_v dS[2], float_v dsdr[4][6]) const
void	GetDStoParticleCBM (const KFParticleBaseSIMD &p, float_v dS[2]) const
virtual void	Transport (float_v dS, const float_v dsdr[6], float_v P[], float_v C[], float_v *dsdr1=0, float_v *F=0, float_v *F1=0) const =0
virtual void	TransportFast (float_v dS, float_v P[]) const =0
	KFParticleBaseSIMD ()
virtual	~KFParticleBaseSIMD ()
	The default destructor.
void	Initialize (const float_v Param[], const float_v Cov[], int_v Charge, float_v Mass)
void	Initialize ()
void	SetConstructMethod (Int_t m)
	Defines the construction method for the current particle (see description of fConstructMethod).
void	SetMassHypo (float_v m)
	Sets the mass hypothesis to the particle, is used when fConstructMethod = 2.
const float_v &	GetMassHypo () const
	Returns the mass hypothesis.
const float_v &	GetSumDaughterMass () const
	Returns the sum of masses of the daughters.
float_v	GetX () const
	Returns the sum of masses of the daughters.
float_v	GetY () const
	Returns the sum of masses of the daughters.
float_v	GetZ () const
	Returns the sum of masses of the daughters.
float_v	GetPx () const
	Returns the sum of masses of the daughters.
float_v	GetPy () const
	Returns the sum of masses of the daughters.
float_v	GetPz () const
	Returns the sum of masses of the daughters.
float_v	GetE () const
	Returns the sum of masses of the daughters.
float_v	GetS () const
	Returns the sum of masses of the daughters.
int_v	GetQ () const
	Returns the sum of masses of the daughters.
float_v	GetChi2 () const
	Returns the sum of masses of the daughters.
int_v	GetNDF () const
	Returns the sum of masses of the daughters.
const float_v &	X () const
	Retruns X coordinate of the particle, fP[0].
const float_v &	Y () const
	Retruns Y coordinate of the particle, fP[1].
const float_v &	Z () const
	Retruns Z coordinate of the particle, fP[2].
const float_v &	Px () const
	Retruns X component of the momentum, fP[3].
const float_v &	Py () const
	Retruns Y component of the momentum, fP[4].
const float_v &	Pz () const
	Retruns Z component of the momentum, fP[5].
const float_v &	E () const
	Returns energy of the particle, fP[6].
const float_v &	S () const
	Returns dS=l/p, l - decay length, fP[7], defined if production vertex is set.
const int_v &	Q () const
	Returns charge of the particle.
const float_v &	Chi2 () const
	Returns Chi2 of the fit.
const int_v &	NDF () const
	Returns number of decrease of freedom.
float_v	GetParameter (Int_t i) const
	Returns P[i] parameter.
float_v	GetCovariance (Int_t i) const
	Returns C[i] element of the covariance matrix in the lower triangular form.
float_v	GetCovariance (Int_t i, Int_t j) const
	Returns C[i,j] element of the covariance matrix.
float_m	GetMomentum (float_v &p, float_v &error) const
float_m	GetPt (float_v &pt, float_v &error) const
float_m	GetEta (float_v &eta, float_v &error) const
float_m	GetPhi (float_v &phi, float_v &error) const
float_m	GetMass (float_v &m, float_v &error) const
float_m	GetDecayLength (float_v &l, float_v &error) const
float_m	GetDecayLengthXY (float_v &l, float_v &error) const
float_m	GetLifeTime (float_v &ctau, float_v &error) const
float_m	GetR (float_v &r, float_v &error) const
float_v &	X ()
	Modifier of X coordinate of the particle, fP[0].
float_v &	Y ()
	Modifier of Y coordinate of the particle, fP[1].
float_v &	Z ()
	Modifier of Z coordinate of the particle, fP[2].
float_v &	Px ()
	Modifier of X component of the momentum, fP[3].
float_v &	Py ()
	Modifier of Y component of the momentum, fP[4].
float_v &	Pz ()
	Modifier of Z component of the momentum, fP[5].
float_v &	E ()
	Modifier of energy of the particle, fP[6].
float_v &	S ()
	Modifier of dS=l/p, l - decay length, fP[7], defined if production vertex is set.
int_v &	Q ()
	Modifier of charge of the particle.
float_v &	Chi2 ()
	Modifier of Chi2 of the fit.
int_v &	NDF ()
	Modifier of number of decrease of freedom.
float_v &	Parameter (Int_t i)
	Modifier of P[i] parameter.
float_v &	Covariance (Int_t i)
	Modifier of C[i] element of the covariance matrix in the lower triangular form.
float_v &	Covariance (Int_t i, Int_t j)
	Modifier of C[i,j] element of the covariance matrix.
void	operator+= (const KFParticleBaseSIMD &Daughter)
void	AddDaughter (const KFParticleBaseSIMD &Daughter)
void	SubtractDaughter (const KFParticleBaseSIMD &Daughter)
void	AddDaughterWithEnergyFit (const KFParticleBaseSIMD &Daughter)
void	AddDaughterWithEnergyFitMC (const KFParticleBaseSIMD &Daughter)
void	SetProductionVertex (const KFParticleBaseSIMD &Vtx)
void	SetNonlinearMassConstraint (float_v Mass)
void	SetMassConstraint (float_v Mass, float_v SigmaMass=float_v(0.f))
void	SetNoDecayLength ()
void	Construct (const KFParticleBaseSIMD *vDaughters[], Int_t nDaughters, const KFParticleBaseSIMD *ProdVtx=0, Float_t Mass=-1)
void	TransportToDecayVertex ()
void	TransportToProductionVertex ()
void	TransportToDS (float_v dS, const float_v *dsdr)
void	TransportToDSLine (float_v dS, const float_v *dsdr)
void	TransportBz (float_v Bz, float_v dS, const float_v *dsdr, float_v P[], float_v C[], float_v *dsdr1=0, float_v *F=0, float_v *F1=0) const
void	TransportBz (float_v Bz, float_v dS, float_v P[]) const
void	TransportCBM (float_v dS, const float_v *dsdr, float_v P[], float_v C[], float_v *dsdr1=0, float_v *F=0, float_v *F1=0) const
void	TransportCBM (float_v dS, float_v P[]) const
float_v	GetDistanceFromVertex (const float_v vtx[]) const
float_v	GetDistanceFromVertex (const KFParticleBaseSIMD &Vtx) const
float_v	GetDistanceFromParticle (const KFParticleBaseSIMD &p) const
float_v	GetDeviationFromVertex (const float_v v[], const float_v Cv[]=0) const
float_v	GetDeviationFromVertex (const KFParticleBaseSIMD &Vtx) const
float_v	GetDeviationFromParticle (const KFParticleBaseSIMD &p) const
void	SubtractFromVertex (KFParticleBaseSIMD &Vtx) const
void	SubtractFromParticle (KFParticleBaseSIMD &Vtx) const
void	RotateXY (float_v angle, float_v Vtx[3])
int_v	Id () const
	Returns Id of the particle.
int	NDaughters () const
	Returns number of daughter particles.
std::vector< int_v > &	DaughterIds ()
	Returns the vector with the indices of daughter particles.
int_v	GetDaughterId (int iD) const
	Returns the daughter Id with the index iD.
void	SetId (int_v id)
	Sets the Id of the particle. After the construction of a particle should be set by user.
void	SetNDaughters (int n)
	Reserves the size of the vector with daughter Ids to n.
void	AddDaughterId (int_v id)
	Adds index of the daughter particle.
void	CleanDaughtersId ()
	Cleans the vector with the indices of daughter particles.
void	SetPDG (int pdg)
	Sets the PDG hypothesis common for all elements of the SIMD vector.
void	SetPDG (int_v &pdg)
	Sets the PDG hypothesis individual for each entry of the SIMD vector.
const int_v &	GetPDG () const
	Returns the PDG hypothesis.
const int_v &	PDG () const
	Returns the PDG hypothesis.
void	GetDistanceToVertexLine (const KFParticleBaseSIMD &Vertex, float_v &l, float_v &dl, float_m *isParticleFromVertex=0) const

Static Public Member Functions
static void	GetArmenterosPodolanski (KFParticleBaseSIMD &positive, KFParticleBaseSIMD &negative, float_v QtAlfa[2])
static void	MultQSQt (const float_v Q[], const float_v S[], float_v SOut[], const int kN)

Protected Member Functions
float_v &	Cij (Int_t i, Int_t j)
void	TransportLine (float_v S, const float_v *dsdr, float_v P[], float_v C[], float_v *dsdr1=0, float_v *F=0, float_v *F1=0) const
void	TransportLine (float_v S, float_v P[]) const
void	GetMeasurement (const KFParticleBaseSIMD &daughter, float_v m[], float_v V[], float_v D[3][3])
void	SetMassConstraint (float_v *mP, float_v *mC, float_v mJ[7][7], float_v mass, float_m mask)

Static Protected Member Functions
static Int_t	IJ (Int_t i, Int_t j)
static void	InvertCholetsky3 (float_v a[6])

Protected Attributes
float_v	fP [8]
	Particle parameters { X, Y, Z, Px, Py, Pz, E, S[=DecayLength/P]}.
float_v	fC [36]
	Low-triangle covariance matrix of fP.
int_v	fQ
	The charge of the particle in the units of the elementary charge.
int_v	fNDF
	Number of degrees of freedom.
float_v	fChi2
	Chi^2.
float_v	fSFromDecay
	Distance from the decay vertex to the current position.
float_v	SumDaughterMass
	Sum of the daughter particles masses. Needed to set the constraint on the minimum mass during particle construction.
float_v	fMassHypo
	The mass hypothesis, used for the constraints during particle construction.
int_v	fId
	Id of the particle.
Bool_t	fAtProductionVertex
	Flag shows if particle is at the production point.
int_v	fPDG
	The PDG hypothesis assigned to the particle.
Int_t	fConstructMethod
	Determines the method for the particle construction. 0 - Energy considered as an independent veriable, fitted independently from momentum, without any constraints on mass 2 - Energy considered as an independent variable, fitted independently from momentum, with constraints on mass of daughter particle.
std::vector< int_v >	fDaughterIds
	A vector with ids of the daughter particles: 1) if particle is created from a track - the index of the track, in this case the size of the vector is always equal to one; 2) if particle is constructed from other particles - indices of these particles in the same array.

Detailed Description

The base of KFParticleSIMD class.

Author

M.Zyzak

Date

05.02.2019

Version

1.0

Contains the main mathematics of the vectorised KF Particle. Will be merged with the KFParticleSIMD class. The class stores all the data in a format of SIMD vectors, the mathematics is fully vectorised. THe mathematics is implemented in single precision. The functionality of the vectorised and scalar classes is the same.

Definition at line 45 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 45 of file KFParticleBaseSIMD.h

Constructor & Destructor Documentation

KFParticleBaseSIMD::KFParticleBaseSIMD

(

)

The default constructor, initialises the parameters by:
1) all parameters are set to 0;
2) all elements of the covariance matrix are set to 0 except Cxx=Cyy=Czz=100;
3) Q = 0;
4) chi2 is set to 0;
5) NDF = -3, since 3 parameters should be fitted: X, Y, Z.

Definition at line 28 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 28 of file KFParticleBaseSIMD.cxx

References Initialize().

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virtual KFParticleBaseSIMD::~KFParticleBaseSIMD ( )

inlinevirtual

The default destructor.

Definition at line 116 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 116 of file KFParticleBaseSIMD.h

Member Function Documentation

void KFParticleBaseSIMD::AddDaughter

(

const KFParticleBaseSIMD &

Daughter

)

Adds daughter to the current particle. Depending on the selected construction method uses:
1) Either simplifyed fast mathematics which consideres momentum and energy as independent variables and thus ignores constraint on the fixed mass (fConstructMethod = 0). In this case the mass of the daughter particle can be corrupted when the constructed vertex is added as the measurement and the mass of the output short-lived particle can become unphysical - smaller then the threshold. Implemented in the AddDaughterWithEnergyFit() function
2) Or slower but correct mathematics which requires that the masses of daughter particles stays fixed in the construction process (fConstructMethod = 2). Implemented in the AddDaughterWithEnergyFitMC() function.

Parameters

[in]

Daughter

- the daughter particle

Definition at line 514 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 514 of file KFParticleBaseSIMD.cxx

References AddDaughterId(), AddDaughterWithEnergyFit(), AddDaughterWithEnergyFitMC(), fC, fConstructMethod, fMassHypo, fNDF, fP, fQ, fSFromDecay, GetQ(), i, Id(), and SumDaughterMass.

Referenced by KFParticleSIMD::AddDaughter(), Construct(), and operator+=().

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void KFParticleBaseSIMD::AddDaughterId ( int_v  id )

inline

Adds index of the daughter particle.

Definition at line 291 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 291 of file KFParticleBaseSIMD.h

References fDaughterIds.

Referenced by AddDaughter(), KFParticleFinder::NeutralDaughterDecay(), and SubtractDaughter().

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void KFParticleBaseSIMD::AddDaughterWithEnergyFit

(

const KFParticleBaseSIMD &

Daughter

)

Adds daughter to the current particle. Uses simplifyed fast mathematics which consideres momentum and energy as independent variables and thus ignores constraint on the fixed mass. In this case the mass of the daughter particle can be corrupted when the constructed vertex is added as the measurement and the mass of the output short-lived particle can become unphysical - smaller then the threshold.

Parameters

[in]

Daughter

- the daughter particle

Definition at line 551 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 551 of file KFParticleBaseSIMD.cxx

References A, fC, fChi2, fNDF, fP, fQ, fSFromDecay, GetMeasurement(), GetQ(), i, IJ(), InvertCholetsky3(), j, k, and Acts::UnitConstants::m.

Referenced by AddDaughter().

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void KFParticleBaseSIMD::AddDaughterWithEnergyFitMC

(

const KFParticleBaseSIMD &

Daughter

)

Adds daughter to the current particle. Uses slower but correct mathematics which requires that the masses of daughter particles stays fixed in the construction process.

Parameters

[in]

Daughter

- the daughter particle

Definition at line 688 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 688 of file KFParticleBaseSIMD.cxx

References A, f, fC, fChi2, fMassHypo, fNDF, fP, fQ, fSFromDecay, GetMeasurement(), GetQ(), i, IJ(), InvertCholetsky3(), j, k, Acts::UnitConstants::m, SetMassConstraint(), and SumDaughterMass.

Referenced by AddDaughter().

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const float_v& KFParticleBaseSIMD::Chi2 ( ) const

inline

Returns Chi2 of the fit.

Definition at line 153 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 153 of file KFParticleBaseSIMD.h

References fChi2.

Referenced by KFParticleSIMD::Chi2().

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float_v& KFParticleBaseSIMD::Chi2 ( )

inline

Modifier of Chi2 of the fit.

Definition at line 186 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 186 of file KFParticleBaseSIMD.h

References fChi2.

float_v& KFParticleBaseSIMD::Cij ( Int_t  i, Int_t  j  )

inlineprotected

Return an element of the covariance matrix with {i,j} indices.

Definition at line 309 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 309 of file KFParticleBaseSIMD.h

References fC, and IJ().

Referenced by SetMassConstraint().

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void KFParticleBaseSIMD::CleanDaughtersId ( )

inline

Cleans the vector with the indices of daughter particles.

Definition at line 292 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 292 of file KFParticleBaseSIMD.h

References fDaughterIds.

Referenced by Construct().

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void KFParticleBaseSIMD::Construct	(	const KFParticleBaseSIMD *	vDaughters[],
		Int_t	nDaughters,
		const KFParticleBaseSIMD *	ProdVtx = 0,
		Float_t	Mass = -1
	)

Constructs a short-lived particle from a set of daughter particles:
1) all parameters of the "this" objects are initialised;
2) daughters are added one after another;
3) if Parent pointer is not null, the production vertex is set to it;
4) if Mass hypothesis >=0 the mass constraint is set.

Parameters

[in]	vDaughters	- array of daughter particles
[in]	nDaughters	- number of daughter particles in the input array
[in]	Parent	- optional parrent particle
[in]	Mass	- optional mass hypothesis

Definition at line 1441 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 1441 of file KFParticleBaseSIMD.cxx

References AddDaughter(), CleanDaughtersId(), fAtProductionVertex, fC, fChi2, fNDF, fQ, fSFromDecay, i, SetMassConstraint(), SetNDaughters(), SetProductionVertex(), and SumDaughterMass.

Referenced by KFParticleSIMD::Construct().

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float_v& KFParticleBaseSIMD::Covariance ( Int_t  i )

inline

Modifier of C[i] element of the covariance matrix in the lower triangular form.

Definition at line 190 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 190 of file KFParticleBaseSIMD.h

References fC, and i.

Referenced by KFParticleSIMD::Covariance(), and RotateXY().

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float_v& KFParticleBaseSIMD::Covariance ( Int_t  i, Int_t  j  )

inline

Modifier of C[i,j] element of the covariance matrix.

Definition at line 191 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 191 of file KFParticleBaseSIMD.h

References fC, and IJ().

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std::vector<int_v>& KFParticleBaseSIMD::DaughterIds ( )

inline

Returns the vector with the indices of daughter particles.

Definition at line 286 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 286 of file KFParticleBaseSIMD.h

References fDaughterIds.

Referenced by KFParticleFinder::CombinePartPart(), KFParticleFinder::ConstructTrackV0Cand(), and KFParticleSIMD::GetKFParticle().

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const float_v& KFParticleBaseSIMD::E ( ) const

inline

Returns energy of the particle, fP[6].

Definition at line 150 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 150 of file KFParticleBaseSIMD.h

References fP.

Referenced by KFParticleSIMD::E(), and GetArmenterosPodolanski().

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float_v& KFParticleBaseSIMD::E ( )

inline

Modifier of energy of the particle, fP[6].

Definition at line 183 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 183 of file KFParticleBaseSIMD.h

References fP.

void KFParticleBaseSIMD::GetArmenterosPodolanski ( KFParticleBaseSIMD &  positive, KFParticleBaseSIMD &  negative, float_v  QtAlfa[2]  )

static

Calculates parameters for the Armenteros-Podolanski plot for two particles. Example how to use:
KFParticle PosParticle(...)
KFParticle NegParticle(...)
Gamma.ConstructGamma(PosParticle, NegParticle);
float VertexGamma[3] = {Gamma.GetX(), Gamma.GetY(), Gamma.GetZ()};
PosParticle.TransportToPoint(VertexGamma);
NegParticle.TransportToPoint(VertexGamma);
float armenterosQtAlfa[2] = {0.};
KFParticle::GetArmenterosPodolanski(PosParticle, NegParticle, armenterosQtAlfa );

Parameters

[in]	positive	- first particle, positive or neutral
[in]	negative	- second particle, negative or neutral
[out]	QtAlfa[2]	- parameters for the Armenteros-Podolanski plot: QtAlfa[0] = qt - projection of the momenta of the particles on the transverse direction with respect to the total momentum, same for both particles; QtAlfa[1] = (Pl+ - Pl-)/(Pl+ + Pl-) - combination of the longitudinal components.

Definition at line 3926 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 3926 of file KFParticleBaseSIMD.cxx

References alpha, E(), Acts::UnitConstants::e, f, GetPx(), GetPy(), GetPz(), and mask.

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float_v KFParticleBaseSIMD::GetChi2 ( ) const

inline

Returns the sum of masses of the daughters.

Definition at line 141 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 141 of file KFParticleBaseSIMD.h

References fChi2.

Referenced by KFParticleSIMD::GetChi2().

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float_v KFParticleBaseSIMD::GetCovariance ( Int_t  i ) const

inline

Returns C[i] element of the covariance matrix in the lower triangular form.

Definition at line 157 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 157 of file KFParticleBaseSIMD.h

References fC, and i.

Referenced by KFParticleSIMD::GetCovariance(), and RotateXY().

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float_v KFParticleBaseSIMD::GetCovariance ( Int_t  i, Int_t  j  ) const

inline

Returns C[i,j] element of the covariance matrix.

Definition at line 158 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 158 of file KFParticleBaseSIMD.h

References fC, and IJ().

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int_v KFParticleBaseSIMD::GetDaughterId ( int  iD ) const

inline

Returns the daughter Id with the index iD.

Definition at line 287 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 287 of file KFParticleBaseSIMD.h

References fDaughterIds.

float_m KFParticleBaseSIMD::GetDecayLength	(	float_v &	l,
		float_v &	error
	)		const

Calculates the decay length of the particle in the laboratory system and its error. If they are well defined the corresponding element of the return mask is set to 0, otherwise 1. The production point should be set before calling this function.

Parameters

[out]	l	- the decay length
[out]	error	- its error

Definition at line 272 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 272 of file KFParticleBaseSIMD.cxx

References acts::error, f, fC, fP, mask, t, ambiguity_solver_full_chain::x, y, and physmon_track_finding_ttbar::z.

Referenced by KFParticleSIMD::GetDecayLength().

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float_m KFParticleBaseSIMD::GetDecayLengthXY	(	float_v &	l,
		float_v &	error
	)		const

Calculates the projection in the XY plane of the decay length of the particle in the laboratory system and its error. If they are well defined the corresponding element of the return mask is set to 0, otherwise 1. The production point should be set before calling this function.

Parameters

[out]	l	- the decay length
[out]	error	- its error

Definition at line 303 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 303 of file KFParticleBaseSIMD.cxx

References acts::error, f, fC, fP, mask, t, ambiguity_solver_full_chain::x, and y.

Referenced by KFParticleSIMD::GetDecayLengthXY().

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float_v KFParticleBaseSIMD::GetDeviationFromParticle

(

const KFParticleBaseSIMD &

p

)

const

Returns Chi2 deviation of the current particle from another particle in 3D.

Parameters

[in]

p

- the second particle

Definition at line 3639 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 3639 of file KFParticleBaseSIMD.cxx

References F1, F2, F3, F4, fC, GetDStoParticle(), MultQSQt(), and Transport().

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float_v KFParticleBaseSIMD::GetDeviationFromVertex	(	const float_v	v[],
		const float_v	Cv[] = 0
	)		const

Returns Chi2 deviation of the current particle from the vertex v with the covariance matrix Cv in 3D.

Parameters

[in]	v[3]	- coordinates of the vertex {X, Y, Z}
[in]	Cv[6]	- covariance matrix of the vertex {Cxx, Cxy, Cyy, Cxz, Czy, Czz}

Definition at line 3579 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 3579 of file KFParticleBaseSIMD.cxx

References F, F1, GetDStoPoint(), i, IJ(), InvertCholetsky3(), j, k, and Transport().

Referenced by KFParticleTopoReconstructor::GetChiToPrimVertex(), and GetDeviationFromVertex().

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float_v KFParticleBaseSIMD::GetDeviationFromVertex

(

const KFParticleBaseSIMD &

Vtx

)

const

Returns Chi2 deviation of the current particle from the vertex in the KFParticle format in 3D.

Parameters

[in]

Vtx

- the vertex in KFPartcile format

Definition at line 3569 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 3569 of file KFParticleBaseSIMD.cxx

References fC, fP, and GetDeviationFromVertex().

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float_v KFParticleBaseSIMD::GetDistanceFromParticle

(

const KFParticleBaseSIMD &

p

)

const

Returns the DCA distance from another particle p.

Parameters

[in]

p

- the second particle

Definition at line 3552 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 3552 of file KFParticleBaseSIMD.cxx

References dy, dz, GetDStoParticleFast(), and TransportFast().

Referenced by KFParticleFinder::FindTrackV0Decay().

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float_v KFParticleBaseSIMD::GetDistanceFromVertex

(

const float_v

vtx[]

)

const

Returns the DCA distance from vertex in 3D.

Parameters

[in]

vtx[3]

- the vertex coordinates {X, Y, Z}

Definition at line 3538 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 3538 of file KFParticleBaseSIMD.cxx

References GetDStoPoint(), and Transport().

Referenced by GetDistanceFromVertex().

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float_v KFParticleBaseSIMD::GetDistanceFromVertex

(

const KFParticleBaseSIMD &

Vtx

)

const

Returns the DCA distance from vertex in the KFParticle format in 3D.

Parameters

[in]

Vtx

- the vertex in the KFParticle format

Definition at line 3529 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 3529 of file KFParticleBaseSIMD.cxx

References fP, and GetDistanceFromVertex().

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void KFParticleBaseSIMD::GetDistanceToVertexLine	(	const KFParticleBaseSIMD &	Vertex,
		float_v &	l,
		float_v &	dl,
		float_m *	isParticleFromVertex = 0
	)		const

Calculates the distance between the particle position and the vertex together with the error. Errors of both particle and vertex are taken into account. Also optionally checks if partcile is pointing flying from the vertex, not in the direction to the vertex if the pointer to the mask isParticleFromVertex is provided.

Parameters

[in]	Vertex	- vertex to which the distance should be calculated
[out]	l	- distance between the current position of the particle and a vertex
[out]	dl	- the error of the calculated distance
[out]	isParticleFromVertex	- mask which shows if particle is flying in the direction from the vertex

Definition at line 1525 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 1525 of file KFParticleBaseSIMD.cxx

References Acts::PhysicalConstants::c, dy, dz, Acts::UnitConstants::e, f, fC, and fP.

Referenced by KFParticleFinder::CombinePartPart(), KFParticleFinder::ConstructTrackV0Cand(), KFParticleFinder::ConstructV0(), and KFParticleFinder::SelectParticles().

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virtual void KFParticleBaseSIMD::GetDStoParticle ( const KFParticleBaseSIMD &  p, float_v  dS[2], float_v  dsdr[4][6]  ) const

pure virtual

Virtual method to get extrapolation parameter dS=l/p and ds/dr partial derivatives to another particle. Is defined in KFParticleSIMD.

Implemented in KFParticleSIMD.

Referenced by GetDeviationFromParticle(), and GetMeasurement().

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void KFParticleBaseSIMD::GetDStoParticleB	(	float_v	B[3],
		const KFParticleBaseSIMD &	p,
		float_v	dS[2],
		float_v	dsdr[4][6]
	)		const

Calculates dS = l/p parameters for two particles, where
1) l - signed distance to the DCA point with the other particle;
2) p - momentum of the particle;
under the assumption of the constant homogeneous field By. dS[0] is the transport parameter for the current particle, dS[1] - for the particle "p". Also calculates partial derivatives dsdr of the parameters dS[0] and dS[1] over the state vectors of the particles:
1) dsdr[0][6] = d(dS[0])/d(param1);
2) dsdr[1][6] = d(dS[0])/d(param2);
3) dsdr[2][6] = d(dS[1])/d(param1);
4) dsdr[3][6] = d(dS[1])/d(param2);
where param1 are parameters of the current particle fP and param2 are parameters of the second particle p.fP. The particle parameters are transformed to the coordinate system, where the magnetic field B is directed along the Z axis and the function GetDStoPointBz() is called. Derivatives dsdr are transformed back to the coordinate system of the particle.

Parameters

[in]	B	- magnetic field By
[in]	p	- second particle
[out]	dS[2]	- transport parameters dS for the current particle (dS[0]) and the second particle "p" (dS[1])
[out]	dsdr[4][6]	- partial derivatives of the parameters dS[0] and dS[1] over the state vectors of the both particles

Definition at line 2770 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 2770 of file KFParticleBaseSIMD.cxx

References Acts::IntegrationTest::Bz, Acts::UnitConstants::e, f, fP, and GetDStoParticleBz().

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void KFParticleBaseSIMD::GetDStoParticleB	(	float_v	B[3],
		const KFParticleBaseSIMD &	p,
		float_v	dS[2]
	)		const

Calculates dS = l/p parameters for two particles, where
1) l - signed distance to the DCA point with the other particle;
2) p - momentum of the particle;
under the assumption of the constant homogeneous field By. dS[0] is the transport parameter for the current particle, dS[1] - for the particle "p". The particle parameters are transformed to the coordinate system, where the magnetic field B is directed along the Z axis and the function GetDStoPointBz() is called.

Parameters

[in]	B	- magnetic field By
[in]	p	- second particle
[out]	dS[2]	- transport parameters dS for the current particle (dS[0]) and the second particle "p" (dS[1])

Definition at line 2841 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 2841 of file KFParticleBaseSIMD.cxx

References Acts::IntegrationTest::Bz, Acts::UnitConstants::e, f, fP, and GetDStoParticleBz().

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void KFParticleBaseSIMD::GetDStoParticleBy	(	float_v	B,
		const KFParticleBaseSIMD &	p,
		float_v	dS[2],
		float_v	dsdr[4][6]
	)		const

Calculates dS = l/p parameters for two particles, where
1) l - signed distance to the DCA point with the other particle;
2) p - momentum of the particle;
under the assumption of the constant homogeneous field By. dS[0] is the transport parameter for the current particle, dS[1] - for the particle "p". Also calculates partial derivatives dsdr of the parameters dS[0] and dS[1] over the state vectors of the particles:
1) dsdr[0][6] = d(dS[0])/d(param1);
2) dsdr[1][6] = d(dS[0])/d(param2);
3) dsdr[2][6] = d(dS[1])/d(param1);
4) dsdr[3][6] = d(dS[1])/d(param2);
where param1 are parameters of the current particle fP and param2 are parameters of the second particle p.fP. The particle parameters are transformed to the coordinate system, where the main component of the magnetic field By is directed along the Z axis: x->x, y->-z, z->y, and the function GetDStoPointBz() is called. Derivatives dsdr are transformed back to the coordinate system of the particle.

Parameters

[in]	B	- magnetic field By
[in]	p	- second particle
[out]	dS[2]	- transport parameters dS for the current particle (dS[0]) and the second particle "p" (dS[1])
[out]	dsdr[4][6]	- partial derivatives of the parameters dS[0] and dS[1] over the state vectors of the both particles

Definition at line 2706 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 2706 of file KFParticleBaseSIMD.cxx

References f, fP, and GetDStoParticleBz().

Referenced by GetDStoParticleCBM().

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void KFParticleBaseSIMD::GetDStoParticleBy	(	float_v	B,
		const KFParticleBaseSIMD &	p,
		float_v	dS[2]
	)		const

Calculates dS = l/p parameters for two particles, where
1) l - signed distance to the DCA point with the other particle;
2) p - momentum of the particle;
under the assumption of the constant homogeneous field By. dS[0] is the transport parameter for the current particle, dS[1] - for the particle "p". The particle parameters are transformed to the coordinate system, where the main component of the magnetic field By is directed along the Z axis: x->x, y->-z, z->y, and the function GetDStoPointBz() is called.

Parameters

[in]	B	- magnetic field By
[in]	p	- second particle
[out]	dS[2]	- transport parameters dS for the current particle (dS[0]) and the second particle "p" (dS[1])

Definition at line 2750 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 2750 of file KFParticleBaseSIMD.cxx

References fP, and GetDStoParticleBz().

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void KFParticleBaseSIMD::GetDStoParticleBz	(	float_v	Bz,
		const KFParticleBaseSIMD &	p,
		float_v	dS[2],
		float_v	dsdr[4][6],
		const float_v *	param1 = 0,
		const float_v *	param2 = 0
	)		const

Calculates dS = l/p parameters for two particles, where
1) l - signed distance to the DCA point with the other particle;
2) p - momentum of the particle;
under the assumption of the constant homogeneous field Bz. dS[0] is the transport parameter for the current particle, dS[1] - for the particle "p". Also calculates partial derivatives dsdr of the parameters dS[0] and dS[1] over the state vectors of the particles:
1) dsdr[0][6] = d(dS[0])/d(param1);
2) dsdr[1][6] = d(dS[0])/d(param2);
3) dsdr[2][6] = d(dS[1])/d(param1);
4) dsdr[3][6] = d(dS[1])/d(param2);
where param1 are parameters of the current particle (if the pointer is not provided it is initialised with fP) and param2 are parameters of the second particle "p" (if the pointer is not provided it is initialised with p.fP). Parameters param1 and param2 should be either provided both or both set to null pointers.

Parameters

[in]	B	- magnetic field Bz
[in]	p	- second particle
[out]	dS[2]	- transport parameters dS for the current particle (dS[0]) and the second particle "p" (dS[1])
[out]	dsdr[4][6]	- partial derivatives of the parameters dS[0] and dS[1] over the state vectors of the both particles
[in]	param1	- optional parameter, is used in case if the parameters of the current particles are rotated to other coordinate system (see GetDStoParticleBy() function), otherwise fP are used
[in]	param2	- optional parameter, is used in case if the parameters of the second particles are rotated to other coordinate system (see GetDStoParticleBy() function), otherwise p.fP are used

Definition at line 1770 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 1770 of file KFParticleBaseSIMD.cxx

References KFPMath::a, KFPMath::a2, KFPMath::b, c2, physmon_vertexing::delta, dy, dz, Acts::UnitConstants::e, f, fP, fQ, GetDStoParticleLine(), i, and Transport().

Referenced by KFParticleSIMD::GetDStoParticle(), GetDStoParticleB(), GetDStoParticleBy(), and KFParticleSIMD::GetDStoParticleFast().

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void KFParticleBaseSIMD::GetDStoParticleBz	(	float_v	Bz,
		const KFParticleBaseSIMD &	p,
		float_v	dS[2],
		const float_v *	param1 = 0,
		const float_v *	param2 = 0
	)		const

Calculates dS = l/p parameters for two particles, where
1) l - signed distance to the DCA point with the other particle;
2) p - momentum of the particle;
under the assumption of the constant homogeneous field Bz. dS[0] is the transport parameter for the current particle, dS[1] - for the particle "p". Parameters param1 and param2 should be either provided both or both set to null pointers.

Parameters

[in]	B	- magnetic field Bz
[in]	p	- second particle
[out]	dS[2]	- transport parameters dS for the current particle (dS[0]) and the second particle "p" (dS[1])
[in]	param1	- optional parameter, is used in case if the parameters of the current particles are rotated to other coordinate system (see GetDStoParticleBy() function), otherwise fP are used
[in]	param2	- optional parameter, is used in case if the parameters of the second particles are rotated to other coordinate system (see GetDStoParticleBy() function), otherwise p.fP are used

Definition at line 2452 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 2452 of file KFParticleBaseSIMD.cxx

References c2, dy, dz, Acts::UnitConstants::e, f, fP, fQ, and GetDStoParticleLine().

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void KFParticleBaseSIMD::GetDStoParticleCBM	(	const KFParticleBaseSIMD &	p,
		float_v	dS[2],
		float_v	dsdr[4][6]
	)		const

Calculates dS = l/p parameters for two particles, where
1) l - signed distance to the DCA point with the other particle;
2) p - momentum of the particle;
in case of the CBM-like nonhomogeneous magnetic field. dS[0] is the transport parameter for the current particle, dS[1] - for the particle "p". Also calculates partial derivatives dsdr of the parameters dS[0] and dS[1] over the state vectors of the particles:
1) dsdr[0][6] = d(dS[0])/d(param1);
2) dsdr[1][6] = d(dS[0])/d(param2);
3) dsdr[2][6] = d(dS[1])/d(param1);
4) dsdr[3][6] = d(dS[1])/d(param2);
where param1 are parameters of the current particle fP and param2 are parameters of the second particle p.fP. For this the y-component of the magnetic field at the position of the current particle is obtained and the GetDStoParticleBy() is called. It is assumed that particles are already close to each other and that the difference in magnetic field approximation between two particles can be neglected. If the charge of both particles is zero or if the magnetic field is zero the function GetDStoParticleLine() is called.

Parameters

[in]	p	- second particle
[out]	dS[2]	- transport parameters dS for the current particle (dS[0]) and the second particle "p" (dS[1])
[out]	dsdr[4][6]	- partial derivatives of the parameters dS[0] and dS[1] over the state vectors of the both particles

Definition at line 2993 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 2993 of file KFParticleBaseSIMD.cxx

References Acts::UnitConstants::e, f, fP, fQ, GetDStoParticleBy(), GetDStoParticleLine(), and GetFieldValue().

Referenced by KFParticleSIMD::GetDStoParticle(), and KFParticleSIMD::GetDStoParticleFast().

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void KFParticleBaseSIMD::GetDStoParticleCBM	(	const KFParticleBaseSIMD &	p,
		float_v	dS[2]
	)		const

Calculates dS = l/p parameters for two particles, where
1) l - signed distance to the DCA point with the other particle;
2) p - momentum of the particle;
in case of the CBM-like nonhomogeneous magnetic field. dS[0] is the transport parameter for the current particle, dS[1] - for the particle "p". For this the y-component of the magnetic field at the position of the current particle is obtained and the GetDStoParticleBy() is called. It is assumed that particles are already close to each other and that the difference in magnetic field approximation between two particles can be neglected. If the charge of both particles is zero or if the magnetic field is zero the function GetDStoParticleLine() is called.

Parameters

[in]	p	- second particle
[out]	dS[2]	- transport parameters dS for the current particle (dS[0]) and the second particle "p" (dS[1])

Definition at line 3030 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 3030 of file KFParticleBaseSIMD.cxx

References Acts::UnitConstants::e, f, fP, fQ, GetDStoParticleBy(), GetDStoParticleLine(), and GetFieldValue().

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virtual void KFParticleBaseSIMD::GetDStoParticleFast ( const KFParticleBaseSIMD &  p, float_v  dS[2]  ) const

pure virtual

Virtual method to get extrapolation parameter dS=l/p to another particle. Is defined in KFParticleSIMD.

Implemented in KFParticleSIMD.

Referenced by GetDistanceFromParticle().

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void KFParticleBaseSIMD::GetDStoParticleLine	(	const KFParticleBaseSIMD &	p,
		float_v	dS[2],
		float_v	dsdr[4][6]
	)		const

Calculates dS = l/p parameters for two particles, where
1) l - signed distance to the DCA point with the other particle;
2) p - momentum of the particle;
under the assumption of the straight line trajectory. Is used for particles with charge 0 or in case of zero magnetic field. dS[0] is the transport parameter for the current particle, dS[1] - for the particle "p". Also calculates partial derivatives dsdr of the parameters dS[0] and dS[1] over the state vectors of the particles:
1) dsdr[0][6] = d(dS[0])/d(param1);
2) dsdr[1][6] = d(dS[0])/d(param2);
3) dsdr[2][6] = d(dS[1])/d(param1);
4) dsdr[3][6] = d(dS[1])/d(param2);
where param1 are parameters of the current particle fP and param2 are parameters of the second particle p.fP.

Parameters

[in]	p	- second particle
[out]	dS[2]	- transport parameters dS for the current particle (dS[0]) and the second particle "p" (dS[1])
[out]	dsdr[4][6]	- partial derivatives of the parameters dS[0] and dS[1] over the state vectors of the both particles

Definition at line 2888 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 2888 of file KFParticleBaseSIMD.cxx

References KFPMath::a2, Acts::UnitConstants::e, f, fP, and i.

Referenced by GetDStoParticleBz(), and GetDStoParticleCBM().

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void KFParticleBaseSIMD::GetDStoParticleLine	(	const KFParticleBaseSIMD &	p,
		float_v	dS[2]
	)		const

Calculates dS = l/p parameters for two particles, where
1) l - signed distance to the DCA point with the other particle;
2) p - momentum of the particle;
under the assumption of the straight line trajectory. Is used for particles with charge 0 or in case of zero magnetic field. dS[0] is the transport parameter for the current particle, dS[1] - for the particle "p".

Parameters

[in]	p	- second particle
[out]	dS[2]	- transport parameters dS for the current particle (dS[0]) and the second particle "p" (dS[1])

Definition at line 2968 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 2968 of file KFParticleBaseSIMD.cxx

References Acts::UnitConstants::e, f, and fP.

virtual float_v KFParticleBaseSIMD::GetDStoPoint ( const float_v  xyz[3], float_v  dsdr[6]  ) const

pure virtual

Virtual method to get extrapolation parameter dS=l/p to . Is defined in KFParticleSIMD.

Implemented in KFParticleSIMD.

Referenced by GetDeviationFromVertex(), GetDistanceFromVertex(), GetMeasurement(), and SetProductionVertex().

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float_v KFParticleBaseSIMD::GetDStoPointBy	(	float_v	By,
		const float_v	xyz[3],
		float_v	dsdr[6]
	)		const

Returns dS = l/p parameter, where
1) l - signed distance to the DCA point with the input xyz point;
2) p - momentum of the particle;
under the assumption of the constant homogeneous field By. Also calculates partial derivatives dsdr of the parameter dS over the state vector of the current particle. The particle parameters are transformed to the coordinate system, where the main component of the magnetic field By is directed along the Z axis: x->x, y->-z, z->y, and the function GetDStoPointBz() is called. Derivatives dsdr are transformed back to the coordinate system of the particle.

Parameters

[in]	By	- magnetic field By
[in]	xyz[3]	- point, to which particle should be transported
[out]	dsdr[6]	= ds/dr - partial derivatives of the parameter dS over the state vector of the current particle

Definition at line 1714 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 1714 of file KFParticleBaseSIMD.cxx

References fP, and GetDStoPointBz().

Referenced by GetDStoPointCBM().

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float_v KFParticleBaseSIMD::GetDStoPointBz	(	float_v	Bz,
		const float_v	xyz[3],
		float_v	dsdr[6],
		const float_v *	param = 0
	)		const

Returns dS = l/p parameter, where
1) l - signed distance to the DCA point with the input xyz point;
2) p - momentum of the particle;
under the assumption of the constant homogeneous field Bz. Also calculates partial derivatives dsdr of the parameter dS over the state vector of the current particle.

Parameters

[in]	B	- magnetic field Bz
[in]	xyz[3]	- point, to which particle should be transported
[out]	dsdr[6]	= ds/dr partial derivatives of the parameter dS over the state vector of the current particle
[in]	param	- optional parameter, is used in case if the parameters of the particle are rotated to other coordinate system (see GetDStoPointBy() function), otherwise fP are used

Definition at line 1593 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 1593 of file KFParticleBaseSIMD.cxx

References KFPMath::a, Acts::PhysicalConstants::c, dy, dz, Acts::UnitConstants::e, f, fP, fQ, mask, merge_hashes::p, physmon_simulation::s, ambiguity_solver_full_chain::x, y, and physmon_track_finding_ttbar::z.

Referenced by KFParticleSIMD::GetDStoPoint(), and GetDStoPointBy().

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float_v KFParticleBaseSIMD::GetDStoPointCBM	(	const float_v	xyz[3],
		float_v	dsdr[6]
	)		const

Returns dS = l/p parameter, where
1) l - signed distance to the DCA point with the input xyz point;
2) p - momentum of the particle;
in case of the CBM-like nonhomogeneous magnetic field. Also calculates partial derivatives dsdr of the parameter dS over the state vector of the current particle. For this the y-component of the magnetic field at the current position of the particle is obtained and the GetDStoPointBy() is called.

Parameters

[in]	xyz[3]	- point, to which particle should be transported
[out]	dsdr[6]	= ds/dr partial derivatives of the parameter dS over the state vector of the current particle

Definition at line 1746 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 1746 of file KFParticleBaseSIMD.cxx

References fP, GetDStoPointBy(), and GetFieldValue().

Referenced by KFParticleSIMD::GetDStoPoint().

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float_v KFParticleBaseSIMD::GetDStoPointLine	(	const float_v	xyz[3],
		float_v	dsdr[6]
	)		const

Returns dS = l/p parameter, where
1) l - signed distance to the DCA point with the input xyz point;
2) p - momentum of the particle;
assuming the straigth line trajectory. Is used for particles with charge 0 or in case of zero magnetic field. Also calculates partial derivatives dsdr of the parameter dS over the state vector of the current particle.

Parameters

[in]	xyz[3]	- point where particle should be transported
[out]	dsdr[6]	= ds/dr partial derivatives of the parameter dS over the state vector of the current particle

Definition at line 1568 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 1568 of file KFParticleBaseSIMD.cxx

References KFPMath::a, Acts::UnitConstants::e, f, and fP.

float_v KFParticleBaseSIMD::GetE ( ) const

inline

Returns the sum of masses of the daughters.

Definition at line 138 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 138 of file KFParticleBaseSIMD.h

References fP.

Referenced by KFParticleSIMD::GetE().

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float_m KFParticleBaseSIMD::GetEta	(	float_v &	eta,
		float_v &	error
	)		const

Calculates particle pseudorapidity and its error. If they are well defined the corresponding element of the return mask is set to 0, otherwise 1.

Parameters

[out]	eta	- pseudorapidity of the particle
[out]	error	- its error

Definition at line 160 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 160 of file KFParticleBaseSIMD.cxx

References KFPMath::a, KFPMath::b, Acts::PhysicalConstants::c, acts::error, eta, f, fC, fP, testing::internal::Log(), mask, and merge_hashes::p.

Referenced by KFParticleSIMD::GetEta().

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virtual void KFParticleBaseSIMD::GetFieldValue ( const float_v  xyz[], float_v  B[]  ) const

pure virtual

Virtual method to access the magnetic field

Implemented in KFParticleSIMD.

Referenced by GetDStoParticleCBM(), GetDStoPointCBM(), and TransportCBM().

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float_m KFParticleBaseSIMD::GetLifeTime	(	float_v &	ctau,
		float_v &	error
	)		const

Calculates the lifetime times speed of life (ctau) [cm] of the particle in the center of mass frame and its error. If they are well defined the corresponding element of the return mask is set to 0, otherwise 1. The production point should be set before calling this function.

Parameters

[out]	ctau	- lifetime of the particle [cm]
[out]	error	- its error

Definition at line 331 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 331 of file KFParticleBaseSIMD.cxx

References acts::error, fC, fP, GetMass(), Acts::UnitConstants::m, and mask.

Referenced by KFParticleSIMD::GetLifeTime().

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float_m KFParticleBaseSIMD::GetMass	(	float_v &	m,
		float_v &	error
	)		const

Calculates the mass of the particle and its error. If they are well defined the corresponding element of the return mask is set to 0, otherwise 1.

Parameters

[out]	m	- mass of the particle
[out]	error	- its error

Definition at line 241 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 241 of file KFParticleBaseSIMD.cxx

References acts::error, f, fC, fP, Acts::UnitConstants::m, Acts::UnitConstants::m2, mask, and physmon_simulation::s.

Referenced by GetLifeTime(), and KFParticleSIMD::GetMass().

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const float_v& KFParticleBaseSIMD::GetMassHypo ( ) const

inline

Returns the mass hypothesis.

Definition at line 123 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 123 of file KFParticleBaseSIMD.h

References fMassHypo.

void KFParticleBaseSIMD::GetMeasurement ( const KFParticleBaseSIMD &  daughter, float_v  m[], float_v  V[], float_v  D[3][3]  )

protected

Obtains the measurements from the current particle and the daughter to be added for the Kalman filter mathematics. If these are two first daughters they are transported to the point of the closest approach, if the third or higher daughter is added it is transported to the DCA point of the already constructed vertex. The correlations are taken into account in the covariance matrices of both measurements, the correlation matrix of two measurements is also calculated. Parameters of the current particle are modified by this function, the daughter is not changed, its parameters are stored to the output arrays after modifications.

Parameters

[in]	daughter	- the daughter particle to be added, stays unchanged
[out]	m[8]	- the output parameters of the daughter particle at the DCA point
[out]	V[36]	- the output covariance matrix of the daughter parameters, takes into account the correlation
[out]	D[3][3]	- the correlation matrix between the current and daughter particles

Definition at line 364 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 364 of file KFParticleBaseSIMD.cxx

References C, F, F1, F2, F3, F4, fC, fNDF, fP, GetDStoParticle(), GetDStoPoint(), i, IJ(), j, k, MultQSQt(), and Transport().

Referenced by AddDaughterWithEnergyFit(), AddDaughterWithEnergyFitMC(), SubtractDaughter(), SubtractFromParticle(), and SubtractFromVertex().

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float_m KFParticleBaseSIMD::GetMomentum	(	float_v &	p,
		float_v &	error
	)		const

Calculates particle momentum and its error. If they are well defined the corresponding element of the return mask is set to 0, otherwise 1.

Parameters

[out]	p	- momentum of the particle
[out]	error	- its error

Definition at line 114 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 114 of file KFParticleBaseSIMD.cxx

References acts::error, f, fC, fP, mask, ambiguity_solver_full_chain::x, y, and physmon_track_finding_ttbar::z.

Referenced by KFParticleSIMD::GetMomentum(), and KFParticleSIMD::GetP().

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int_v KFParticleBaseSIMD::GetNDF ( ) const

inline

Returns the sum of masses of the daughters.

Definition at line 142 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 142 of file KFParticleBaseSIMD.h

References fNDF.

Referenced by KFParticleSIMD::GetNDF().

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float_v KFParticleBaseSIMD::GetParameter ( Int_t  i ) const

inline

Returns P[i] parameter.

Definition at line 156 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 156 of file KFParticleBaseSIMD.h

References fP, and i.

Referenced by KFParticleSIMD::GetParameter().

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const int_v& KFParticleBaseSIMD::GetPDG ( ) const

inline

Returns the PDG hypothesis.

Definition at line 296 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 296 of file KFParticleBaseSIMD.h

References fPDG.

Referenced by KFParticleFinder::ConstructTrackV0Cand(), KFParticleSIMD::GetKFParticle(), and KFParticleSIMD::SetOneEntry().

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float_m KFParticleBaseSIMD::GetPhi	(	float_v &	phi,
		float_v &	error
	)		const

Calculates particle polar angle at the current point and its error. If they are well defined the corresponding element of the return mask is set to 0, otherwise 1.

Parameters

[out]	phi	- polar angle of the particle
[out]	error	- its error

Definition at line 198 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 198 of file KFParticleBaseSIMD.cxx

References Acts::UnitConstants::e, acts::error, f, fC, fP, and mask.

Referenced by KFParticleSIMD::GetPhi().

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float_m KFParticleBaseSIMD::GetPt	(	float_v &	pt,
		float_v &	error
	)		const

Calculates particle transverse momentum and its error. If they are well defined the corresponding element of the return mask is set to 0, otherwise 1.

Parameters

[out]	pt	- transverse momentum of the particle
[out]	error	- its error

Definition at line 138 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 138 of file KFParticleBaseSIMD.cxx

References acts::error, f, fC, fP, and mask.

Referenced by KFParticleSIMD::GetPt().

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float_v KFParticleBaseSIMD::GetPx ( ) const

inline

Returns the sum of masses of the daughters.

Definition at line 135 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 135 of file KFParticleBaseSIMD.h

References fP.

Referenced by GetArmenterosPodolanski(), and KFParticleSIMD::GetPx().

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float_v KFParticleBaseSIMD::GetPy ( ) const

inline

Returns the sum of masses of the daughters.

Definition at line 136 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 136 of file KFParticleBaseSIMD.h

References fP.

Referenced by GetArmenterosPodolanski(), and KFParticleSIMD::GetPy().

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float_v KFParticleBaseSIMD::GetPz ( ) const

inline

Returns the sum of masses of the daughters.

Definition at line 137 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 137 of file KFParticleBaseSIMD.h

References fP.

Referenced by GetArmenterosPodolanski(), and KFParticleSIMD::GetPz().

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int_v KFParticleBaseSIMD::GetQ ( ) const

inline

Returns the sum of masses of the daughters.

Definition at line 140 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 140 of file KFParticleBaseSIMD.h

References fQ.

Referenced by AddDaughter(), AddDaughterWithEnergyFit(), AddDaughterWithEnergyFitMC(), KFParticleSIMD::GetQ(), SubtractDaughter(), and SubtractFromParticle().

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float_m KFParticleBaseSIMD::GetR	(	float_v &	r,
		float_v &	error
	)		const

Calculates the distance to the point {0,0,0} and its error. If they are well defined the corresponding element of the return mask is set to 0, otherwise 1.

Parameters

[out]	r	- polar angle of the particle
[out]	error	- its error

Definition at line 220 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 220 of file KFParticleBaseSIMD.cxx

References Acts::UnitConstants::e, acts::error, f, fC, fP, mask, physmon_track_finding_ttbar::r, ambiguity_solver_full_chain::x, and y.

Referenced by KFParticleSIMD::GetR().

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float_v KFParticleBaseSIMD::GetS ( ) const

inline

Returns the sum of masses of the daughters.

Definition at line 139 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 139 of file KFParticleBaseSIMD.h

References fP.

Referenced by KFParticleSIMD::GetS().

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const float_v& KFParticleBaseSIMD::GetSumDaughterMass ( ) const

inline

Returns the sum of masses of the daughters.

Definition at line 124 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 124 of file KFParticleBaseSIMD.h

References SumDaughterMass.

float_v KFParticleBaseSIMD::GetX ( ) const

inline

Returns the sum of masses of the daughters.

Definition at line 132 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 132 of file KFParticleBaseSIMD.h

References fP.

Referenced by KFParticleSIMD::GetX(), and RotateXY().

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float_v KFParticleBaseSIMD::GetY ( ) const

inline

Returns the sum of masses of the daughters.

Definition at line 133 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 133 of file KFParticleBaseSIMD.h

References fP.

Referenced by KFParticleSIMD::GetY(), and RotateXY().

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float_v KFParticleBaseSIMD::GetZ ( ) const

inline

Returns the sum of masses of the daughters.

Definition at line 134 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 134 of file KFParticleBaseSIMD.h

References fP.

Referenced by KFParticleSIMD::GetZ(), and RotateXY().

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int_v KFParticleBaseSIMD::Id ( ) const

inline

Returns Id of the particle.

Definition at line 284 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 284 of file KFParticleBaseSIMD.h

References fId.

Referenced by AddDaughter(), KFParticleSIMD::GetKFParticle(), KFParticleFinder::NeutralDaughterDecay(), KFParticleSIMD::SetOneEntry(), and SubtractDaughter().

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static Int_t KFParticleBaseSIMD::IJ ( Int_t  i, Int_t  j  )

inlinestaticprotected

Converts a pair of indices {i,j} of the covariance matrix to one index corresponding to the triangular form.

Definition at line 305 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 305 of file KFParticleBaseSIMD.h

References i.

Referenced by AddDaughterWithEnergyFit(), AddDaughterWithEnergyFitMC(), Cij(), Covariance(), KFParticleSIMD::Create(), GetCovariance(), GetDeviationFromVertex(), KFParticleSIMD::GetDeviationFromVertexXY(), GetMeasurement(), KFParticleSIMD::Load(), SetMassConstraint(), SetProductionVertex(), and SubtractDaughter().

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void KFParticleBaseSIMD::Initialize	(	const float_v	Param[],
		const float_v	Cov[],
		int_v	Charge,
		float_v	Mass
	)

Sets the parameters of the particle:

Parameters

[in]	Param[6]	= { X, Y, Z, Px, Py, Pz } - position and momentum
[in]	Cov[21]	- lower-triangular part of the covariance matrix: ( 0 . . . . . ) ( 1 2 . . . . ) Cov[21] = ( 3 4 5 . . . ) ( 6 7 8 9 . . ) ( 10 11 12 13 14 . ) ( 15 16 17 18 19 20 )
[in]	Charge	- charge of the particle in elementary charge units
[in]	mass	- the mass hypothesis

Definition at line 41 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 41 of file KFParticleBaseSIMD.cxx

References energy, f, fAtProductionVertex, fC, fChi2, fMassHypo, fNDF, fP, fQ, fSFromDecay, h1, h2, i, and SumDaughterMass.

void KFParticleBaseSIMD::Initialize

(

)

Initialises the parameters by default:
1) all parameters are set to 0;
2) all elements of the covariance matrix are set to 0 except Cxx=Cyy=Czz=100;
3) Q = 0;
4) chi2 is set to 0;
5) NDF = -3, since 3 parameters should be fitted: X, Y, Z.

Definition at line 91 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 91 of file KFParticleBaseSIMD.cxx

References f, fAtProductionVertex, fC, fChi2, fMassHypo, fNDF, fP, fQ, fSFromDecay, i, and SumDaughterMass.

Referenced by KFParticleSIMD::Create(), and KFParticleBaseSIMD().

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void KFParticleBaseSIMD::InvertCholetsky3 ( float_v  a[6] )

staticprotected

Inverts symmetric 3x3 matrix a using modified Choletsky decomposition. The result is stored to the same matrix a.

Parameters

[in,out]

a

- 3x3 symmetric matrix

Definition at line 4035 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 4035 of file KFParticleBaseSIMD.cxx

References Acts::UnitConstants::e, f, i, j, k, and physmon_ckf_tracking::u.

Referenced by AddDaughterWithEnergyFit(), AddDaughterWithEnergyFitMC(), GetDeviationFromVertex(), KFParticleSIMD::GetDeviationFromVertexXY(), SetProductionVertex(), SubtractDaughter(), SubtractFromParticle(), and SubtractFromVertex().

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void KFParticleBaseSIMD::MultQSQt ( const float_v  Q[], const float_v  S[], float_v  SOut[], const int  kN  )

static

Matrix multiplication SOut = Q*S*Q^T, where Q - square matrix, S - symmetric matrix.

Parameters

[in]	Q	- square matrix
[in]	S	- input symmetric matrix
[out]	SOut	- output symmetric matrix
[in]	kN	- dimensionality of the matrices

Definition at line 4093 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 4093 of file KFParticleBaseSIMD.cxx

References i, j, and k.

Referenced by GetDeviationFromParticle(), KFParticleSIMD::GetDeviationFromParticleXY(), GetMeasurement(), SetProductionVertex(), TransportBz(), TransportCBM(), and TransportLine().

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int KFParticleBaseSIMD::NDaughters ( ) const

inline

Returns number of daughter particles.

Definition at line 285 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 285 of file KFParticleBaseSIMD.h

References fDaughterIds.

Referenced by KFParticleSIMD::KFParticleSIMD(), and KFParticleSIMD::SetOneEntry().

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const int_v& KFParticleBaseSIMD::NDF ( ) const

inline

Returns number of decrease of freedom.

Definition at line 154 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 154 of file KFParticleBaseSIMD.h

References fNDF.

Referenced by KFParticleSIMD::NDF().

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int_v& KFParticleBaseSIMD::NDF ( )

inline

Modifier of number of decrease of freedom.

Definition at line 187 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 187 of file KFParticleBaseSIMD.h

References fNDF.

void KFParticleBaseSIMD::operator delete ( void *  ptr, size_t    )

inline

delete operator for the SIMD-alligned dynamic memory release

Definition at line 60 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 60 of file KFParticleBaseSIMD.h

void KFParticleBaseSIMD::operator delete[] ( void *  ptr, size_t    )

inline

delete operator for the SIMD-alligned dynamic memory release

Definition at line 61 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 61 of file KFParticleBaseSIMD.h

void* KFParticleBaseSIMD::operator new ( size_t  size )

inline

new operator for allocation of the SIMD-alligned dynamic memory allocation

Definition at line 56 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 56 of file KFParticleBaseSIMD.h

References size.

void* KFParticleBaseSIMD::operator new ( size_t  size, void *  ptr  )

inline

new operator for allocation of the SIMD-alligned dynamic memory allocation

Definition at line 58 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 58 of file KFParticleBaseSIMD.h

References size.

void* KFParticleBaseSIMD::operator new[] ( size_t  size )

inline

new operator for allocation of the SIMD-alligned dynamic memory allocation

Definition at line 57 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 57 of file KFParticleBaseSIMD.h

References size.

void* KFParticleBaseSIMD::operator new[] ( size_t  size, void *  ptr  )

inline

new operator for allocation of the SIMD-alligned dynamic memory allocation

Definition at line 59 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 59 of file KFParticleBaseSIMD.h

References size.

void KFParticleBaseSIMD::operator+=

(

const KFParticleBaseSIMD &

Daughter

)

Operator to add daughter to the current particle. Calls AddDaughter() function.

Parameters

[in]

Daughter

- the daughter particle

Definition at line 355 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 355 of file KFParticleBaseSIMD.cxx

References AddDaughter().

Referenced by KFParticleSIMD::operator+=().

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float_v& KFParticleBaseSIMD::Parameter ( Int_t  i )

inline

Modifier of P[i] parameter.

Definition at line 189 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 189 of file KFParticleBaseSIMD.h

References fP, and i.

Referenced by KFParticleSIMD::Parameter().

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const int_v& KFParticleBaseSIMD::PDG ( ) const

inline

Returns the PDG hypothesis.

Definition at line 297 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 297 of file KFParticleBaseSIMD.h

References fPDG.

Referenced by KFParticleFinder::CombinePartPart(), KFParticleFinder::ConstructTrackV0Cand(), KFParticleFinder::ConstructV0(), and KFParticleFinder::SaveV0PrimSecCand().

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const float_v& KFParticleBaseSIMD::Px ( ) const

inline

Retruns X component of the momentum, fP[3].

Definition at line 147 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 147 of file KFParticleBaseSIMD.h

References fP.

Referenced by KFParticleSIMD::Px().

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float_v& KFParticleBaseSIMD::Px ( )

inline

Modifier of X component of the momentum, fP[3].

Definition at line 180 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 180 of file KFParticleBaseSIMD.h

References fP.

const float_v& KFParticleBaseSIMD::Py ( ) const

inline

Retruns Y component of the momentum, fP[4].

Definition at line 148 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 148 of file KFParticleBaseSIMD.h

References fP.

Referenced by KFParticleSIMD::Py().

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float_v& KFParticleBaseSIMD::Py ( )

inline

Modifier of Y component of the momentum, fP[4].

Definition at line 181 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 181 of file KFParticleBaseSIMD.h

References fP.

const float_v& KFParticleBaseSIMD::Pz ( ) const

inline

Retruns Z component of the momentum, fP[5].

Definition at line 149 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 149 of file KFParticleBaseSIMD.h

References fP.

Referenced by KFParticleSIMD::Pz().

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float_v& KFParticleBaseSIMD::Pz ( )

inline

Modifier of Z component of the momentum, fP[5].

Definition at line 182 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 182 of file KFParticleBaseSIMD.h

References fP.

const int_v& KFParticleBaseSIMD::Q ( ) const

inline

Returns charge of the particle.

Definition at line 152 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 152 of file KFParticleBaseSIMD.h

References fQ.

Referenced by KFParticleSIMD::Q().

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int_v& KFParticleBaseSIMD::Q ( )

inline

Modifier of charge of the particle.

Definition at line 185 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 185 of file KFParticleBaseSIMD.h

References fQ.

void KFParticleBaseSIMD::RotateXY	(	float_v	angle,
		float_v	Vtx[3]
	)

Rotates the KFParticle object around OZ axis, OZ axis is set by the vertex position.

Parameters

[in]	angle	- angle of rotation in XY plane in [rad]
[in]	Vtx[3]	- position of the vertex in [cm]

Definition at line 3967 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 3967 of file KFParticleBaseSIMD.cxx

References Acts::PhysicalConstants::c, Covariance(), fP, GetCovariance(), GetX(), GetY(), GetZ(), i, j, k, physmon_simulation::s, X(), Y(), and Z().

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const float_v& KFParticleBaseSIMD::S ( ) const

inline

Returns dS=l/p, l - decay length, fP[7], defined if production vertex is set.

Definition at line 151 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 151 of file KFParticleBaseSIMD.h

References fP.

Referenced by KFParticleSIMD::S().

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float_v& KFParticleBaseSIMD::S ( )

inline

Modifier of dS=l/p, l - decay length, fP[7], defined if production vertex is set.

Definition at line 184 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 184 of file KFParticleBaseSIMD.h

References fP.

void KFParticleBaseSIMD::SetConstructMethod ( Int_t  m )

inline

Defines the construction method for the current particle (see description of fConstructMethod).

Definition at line 121 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 121 of file KFParticleBaseSIMD.h

References fConstructMethod, and Acts::UnitConstants::m.

void KFParticleBaseSIMD::SetId ( int_v  id )

inline

Sets the Id of the particle. After the construction of a particle should be set by user.

Definition at line 289 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 289 of file KFParticleBaseSIMD.h

References fId, and train_ambiguity_solver::id.

Referenced by KFParticleFinder::ConstructTrackV0Cand(), KFParticleFinder::ConstructV0(), and KFParticleFinder::NeutralDaughterDecay().

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void KFParticleBaseSIMD::SetMassConstraint	(	float_v	Mass,
		float_v	SigmaMass = float_v(0.f)
	)

Sets linearised mass constraint on the current particle. The constraint can be set with an uncertainty.

Parameters

[in]	Mass	- the mass to be set on the state vector mP
[in]	SigmaMass	- uncertainty of the constraint

Definition at line 1360 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 1360 of file KFParticleBaseSIMD.cxx

References Cij(), fC, fChi2, fMassHypo, fNDF, fP, i, j, Acts::UnitConstants::m2, and SumDaughterMass.

Referenced by AddDaughterWithEnergyFitMC(), Construct(), and SetNonlinearMassConstraint().

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void KFParticleBaseSIMD::SetMassConstraint ( float_v *  mP, float_v *  mC, float_v  mJ[7][7], float_v  mass, float_m  mask  )

protected

Sets the exact nonlinear mass constraint on the state vector mP with the covariance matrix mC.

Parameters

[in,out]	mP	- the state vector to be modified
[in,out]	mC	- the corresponding covariance matrix
[in,out]	mJ	- the Jacobian between initial and modified parameters
[in]	mass	- the mass to be set on the state vector mP
[in]	mask	- mask defines entries of the SIMD vector, for which the constraint should be applied

Definition at line 1236 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 1236 of file KFParticleBaseSIMD.cxx

References KFPMath::a, KFPMath::b, Acts::PhysicalConstants::c, perf_headwind::df, Acts::UnitConstants::e, f, i, IJ(), j, k, mask, and mass.

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void KFParticleBaseSIMD::SetMassHypo ( float_v  m )

inline

Sets the mass hypothesis to the particle, is used when fConstructMethod = 2.

Definition at line 122 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 122 of file KFParticleBaseSIMD.h

References fMassHypo, and Acts::UnitConstants::m.

void KFParticleBaseSIMD::SetNDaughters ( int  n )

inline

Reserves the size of the vector with daughter Ids to n.

Definition at line 290 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 290 of file KFParticleBaseSIMD.h

References fDaughterIds.

Referenced by Construct(), and KFParticleSIMD::KFParticleSIMD().

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void KFParticleBaseSIMD::SetNoDecayLength

(

)

Sets constraint on the zero decay length. When the production point is set the measurement from this particle is created at the decay point.

Definition at line 1410 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 1410 of file KFParticleBaseSIMD.cxx

References Hydro::f, fC, fChi2, fNDF, fP, h, i, j, physmon_simulation::s, and TransportToDecayVertex().

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void KFParticleBaseSIMD::SetNonlinearMassConstraint

(

float_v

Mass

)

Sets the exact nonlinear mass constraint on the current particle.

Parameters

[in]

mass

- the mass to be set on the particle

Definition at line 1336 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 1336 of file KFParticleBaseSIMD.cxx

References energy, f, fC, fChi2, fMassHypo, fNDF, fP, mass, SetMassConstraint(), and SumDaughterMass.

Referenced by KFParticleFinder::NeutralDaughterDecay(), and KFParticleFinder::SaveV0PrimSecCand().

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void KFParticleBaseSIMD::SetPDG ( int  pdg )

inline

Sets the PDG hypothesis common for all elements of the SIMD vector.

Definition at line 294 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 294 of file KFParticleBaseSIMD.h

References fPDG, and pdg.

Referenced by KFParticleFinder::CombinePartPart(), KFParticleFinder::ConstructPrimaryBG(), KFParticleFinder::ConstructTrackV0Cand(), KFParticleFinder::Find2DaughterDecay(), and KFParticleFinder::FindTrackV0Decay().

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void KFParticleBaseSIMD::SetPDG ( int_v &  pdg )

inline

Sets the PDG hypothesis individual for each entry of the SIMD vector.

Definition at line 295 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 295 of file KFParticleBaseSIMD.h

References fPDG, and pdg.

void KFParticleBaseSIMD::SetProductionVertex

(

const KFParticleBaseSIMD &

Vtx

)

Adds a vertex as a point-like measurement to the current particle. The eights parameter of the state vector is filled with the decay length to the momentum ratio (s = l/p). The corresponding covariances are calculated as well. The parameters of the particle are stored at the position of the production vertex.

Parameters

[in]

Vtx

- the assumed producation vertex

Definition at line 1050 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 1050 of file KFParticleBaseSIMD.cxx

References A, f, F, F1, fAtProductionVertex, fC, fChi2, fNDF, fP, fSFromDecay, GetDStoPoint(), i, IJ(), InvertCholetsky3(), j, k, Acts::UnitConstants::m, MultQSQt(), Transport(), TransportToDecayVertex(), X(), Y(), and Z().

Referenced by KFParticleFinder::CombinePartPart(), Construct(), KFParticleFinder::ConstructTrackV0Cand(), KFParticleFinder::ConstructV0(), KFParticleFinder::SaveV0PrimSecCand(), and KFParticleFinder::SelectParticles().

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void KFParticleBaseSIMD::SubtractDaughter

(

const KFParticleBaseSIMD &

Daughter

)

Subtracts a daughter particle from the mother particle. The mathematics is similar to AddDaughterWithEnergyFit() but momentum is subtracted.

Parameters

[in]

Daughter

- the daughter particle

Definition at line 919 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 919 of file KFParticleBaseSIMD.cxx

References A, AddDaughterId(), fC, fChi2, fNDF, fP, fQ, fSFromDecay, GetMeasurement(), GetQ(), i, Id(), IJ(), InvertCholetsky3(), j, k, and Acts::UnitConstants::m.

Referenced by KFParticleFinder::NeutralDaughterDecay().

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void KFParticleBaseSIMD::SubtractFromParticle

(

KFParticleBaseSIMD &

Vtx

)

const

Subtract the current particle from another particle Vtx using the Kalman filter mathematics. The function is depricated and is kept for compatibility reasons. Should be replaced with SubtractDaughter().

Parameters

[in]

Vtx

- particle from which the current particle should be subtracted

Definition at line 3741 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 3741 of file KFParticleBaseSIMD.cxx

References fC, fChi2, fNDF, fP, fQ, fSFromDecay, GetMeasurement(), GetQ(), i, InvertCholetsky3(), j, k, and Acts::UnitConstants::m.

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void KFParticleBaseSIMD::SubtractFromVertex

(

KFParticleBaseSIMD &

Vtx

)

const

Subtract the current particle from vertex Vtx using the Kalman filter mathematics.

Parameters

[in]

Vtx

- vertex from which particle should be subtracted

Definition at line 3680 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 3680 of file KFParticleBaseSIMD.cxx

References fC, fChi2, fNDF, fP, GetMeasurement(), i, InvertCholetsky3(), j, k, and Acts::UnitConstants::m.

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virtual void KFParticleBaseSIMD::Transport ( float_v  dS, const float_v  dsdr[6], float_v  P[], float_v  C[], float_v *  dsdr1 = 0, float_v *  F = 0, float_v *  F1 = 0  ) const

pure virtual

Virtual method to transport a particle parameters and covariance matrix on a certain distance along the trajectory. Is defined in KFParticleSIMD.

Referenced by GetDeviationFromParticle(), GetDeviationFromVertex(), GetDistanceFromVertex(), GetDStoParticleBz(), GetMeasurement(), SetProductionVertex(), and TransportToDS().

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void KFParticleBaseSIMD::TransportBz	(	float_v	Bz,
		float_v	dS,
		const float_v *	dsdr,
		float_v	P[],
		float_v	C[],
		float_v *	dsdr1 = 0,
		float_v *	F = 0,
		float_v *	F1 = 0
	)		const

Transports the parameters and their covariance matrix of the current particle assuming constant homogeneous magnetic field Bz on the length defined by the transport parameter dS = l/p, where l is the signed distance and p is the momentum of the current particle. The obtained parameters and covariance matrix are stored to the arrays P and C respectively. P and C can be set to the parameters fP and covariance matrix fC of the current particle. In this case the particle parameters will be modified. Dependence of the transport parameter dS on the state vector of the current particle is taken into account in the covariance matrix using partial derivatives dsdr = d(dS)/d(fP). If a pointer to F is initialised the transport jacobian F = d(fP new)/d(fP old) is stored. Since dS can depend on the state vector r1 of other particle or vertex, the corelation matrix F1 = d(fP new)/d(r1) can be optionally calculated if a pointer F1 is provided. Parameters F and F1 should be either both initialised or both set to null pointer.

Parameters

[in]	Bz	- z-component of the constant homogeneous magnetic field Bz
[in]	dS	- transport parameter which defines the distance to which particle should be transported
[in]	dsdr[6]	= ds/dr - partial derivatives of the parameter dS over the state vector of the current particle
[out]	P[8]	- array, where transported parameters should be stored
[out]	C[36]	- array, where transported covariance matrix (8x8) should be stored in the lower triangular form
[in]	dsdr1[6]	= ds/dr - partial derivatives of the parameter dS over the state vector of another particle or vertex
[out]	F[36]	- optional parameter, transport jacobian, 6x6 matrix F = d(fP new)/d(fP old)
[out]	F1[36]	- optional parameter, corelation 6x6 matrix betweeen the current particle and particle or vertex with the state vector r1, to which the current particle is being transported, F1 = d(fP new)/d(r1)

Definition at line 3395 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 3395 of file KFParticleBaseSIMD.cxx

References Acts::IntegrationTest::Bz, Acts::PhysicalConstants::c, f, fC, fP, fQ, i, j, MultQSQt(), and physmon_simulation::s.

Referenced by KFParticleSIMD::Transport(), and KFParticleSIMD::TransportFast().

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void KFParticleBaseSIMD::TransportBz	(	float_v	Bz,
		float_v	dS,
		float_v	P[]
	)		const

Transports the parameters of the current particle assuming constant homogeneous magnetic field Bz on the length defined by the transport parameter dS = l/p, where l is the signed distance and p is the momentum of the current particle. The obtained parameters are stored to the array P. P be set to the parameters fP of the current particle. In this case the particle parameters will be modified.

Parameters

[in]	Bz	- z-component of the constant homogeneous magnetic field Bz
[in]	dS	- transport parameter which defines the distance to which particle should be transported
[out]	P[8]	- array, where transported parameters should be stored

Definition at line 3485 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 3485 of file KFParticleBaseSIMD.cxx

References Acts::IntegrationTest::Bz, Acts::PhysicalConstants::c, f, fP, fQ, and physmon_simulation::s.

void KFParticleBaseSIMD::TransportCBM	(	float_v	dS,
		const float_v *	dsdr,
		float_v	P[],
		float_v	C[],
		float_v *	dsdr1 = 0,
		float_v *	F = 0,
		float_v *	F1 = 0
	)		const

Transports the parameters and their covariance matrix of the current particle assuming CBM-like nonhomogeneous magnetic field on the length defined by the transport parameter dS = l/p, where l is the signed distance and p is the momentum of the current particle. The obtained parameters and covariance matrix are stored to the arrays P and C respectively. P and C can be set to the parameters fP and covariance matrix fC of the current particle. In this case the particle parameters will be modified. Dependence of the transport parameter dS on the state vector of the current particle is taken into account in the covariance matrix using partial derivatives dsdr = d(dS)/d(fP). If a pointer to F is initialised the transport jacobian F = d(fP new)/d(fP old) is stored. Since dS can depend on the state vector r1 of other particle or vertex, the corelation matrix F1 = d(fP new)/d(r1) can be optionally calculated if a pointer F1 is provided. Parameters F and F1 should be either both initialised or both set to null pointer.

Parameters

[in]	dS	- transport parameter which defines the distance to which particle should be transported
[in]	dsdr[6]	= ds/dr - partial derivatives of the parameter dS over the state vector of the current particle
[out]	P[8]	- array, where transported parameters should be stored
[out]	C[36]	- array, where transported covariance matrix (8x8) should be stored in the lower triangular form
[in]	dsdr1[6]	= ds/dr - partial derivatives of the parameter dS over the state vector of another particle or vertex
[out]	F[36]	- optional parameter, transport jacobian, 6x6 matrix F = d(fP new)/d(fP old)
[out]	F1[36]	- optional parameter, corelation 6x6 matrix betweeen the current particle and particle or vertex with the state vector r1, to which the current particle is being transported, F1 = d(fP new)/d(r1)

Definition at line 3059 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 3059 of file KFParticleBaseSIMD.cxx

References Acts::PhysicalConstants::c, f, fC, fP, fQ, GetFieldValue(), i, j, Acts::UnitConstants::m, MultQSQt(), n, and TransportLine().

Referenced by KFParticleSIMD::Transport(), and KFParticleSIMD::TransportFast().

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void KFParticleBaseSIMD::TransportCBM	(	float_v	dS,
		float_v	P[]
	)		const

Transports the parameters of the current particle assuming CBM-like nonhomogeneous magnetic field on the length defined by the transport parameter dS = l/p, where l is the signed distance and p is the momentum of the current particle. The obtained parameters and covariance matrix are stored to the array P. P can be set to the parameters fP. In this case the particle parameters will be modified.

Parameters

[in]	dS	- transport parameter which defines the distance to which particle should be transported
[out]	P[8]	- array, where transported parameters should be stored

Definition at line 3263 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 3263 of file KFParticleBaseSIMD.cxx

References Acts::PhysicalConstants::c, f, fP, fQ, GetFieldValue(), i, j, Acts::UnitConstants::m, n, and TransportLine().

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virtual void KFParticleBaseSIMD::TransportFast ( float_v  dS, float_v  P[]  ) const

pure virtual

Virtual method to transport a particle parameters on a certain distance along the trajectory. Is defined in KFParticleSIMD.

Implemented in KFParticleSIMD.

Referenced by GetDistanceFromParticle().

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void KFParticleBaseSIMD::TransportLine ( float_v  S, const float_v *  dsdr, float_v  P[], float_v  C[], float_v *  dsdr1 = 0, float_v *  F = 0, float_v *  F1 = 0  ) const

protected

Transports the parameters and their covariance matrix of the current particle assuming the straight line trajectory on the length defined by the transport parameter dS = l/p, where l is the signed distance and p is the momentum of the current particle. The obtained parameters and covariance matrix are stored to the arrays P and C respectively. P and C can be set to the parameters fP and covariance matrix fC of the current particle. In this case the particle parameters will be modified. Dependence of the transport parameter dS on the state vector of the current particle is taken into account in the covariance matrix using partial derivatives dsdr = d(dS)/d(fP). If a pointer to F is initialised the transport jacobian F = d(fP new)/d(fP old) is stored. Since dS can depend on the state vector r1 of other particle or vertex, the corelation matrix F1 = d(fP new)/d(r1) can be optionally calculated if a pointer F1 is provided. Parameters F and F1 should be either both initialised or both set to null pointer.

Parameters

[in]	dS	- transport parameter which defines the distance to which particle should be transported
[in]	dsdr[6]	= ds/dr - partial derivatives of the parameter dS over the state vector of the current particle
[out]	P[8]	- array, where transported parameters should be stored
[out]	C[36]	- array, where transported covariance matrix (8x8) should be stored in the lower triangular form
[in]	dsdr1[6]	= ds/dr - partial derivatives of the parameter dS over the state vector of another particle or vertex
[out]	F[36]	- optional parameter, transport jacobian, 6x6 matrix F = d(fP new)/d(fP old)
[out]	F1[36]	- optional parameter, corelation 6x6 matrix betweeen the current particle and particle or vertex with the state vector r1, to which the current particle is being transported, F1 = d(fP new)/d(r1)

Definition at line 3835 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 3835 of file KFParticleBaseSIMD.cxx

References fC, fP, i, j, and MultQSQt().

Referenced by TransportCBM(), and TransportToDSLine().

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void KFParticleBaseSIMD::TransportLine ( float_v  S, float_v  P[]  ) const

protected

Transports the parameters of the current particle assuming the straight line trajectory on the length defined by the transport parameter dS = l/p, where l is the signed distance and p is the momentum of the current particle. The obtained parameters are stored to the array P P can be set to the parameters fP of the current particle. In this case the particle parameters will be modified.

Parameters

[in]	dS	- transport parameter which defines the distance to which particle should be transported
[out]	P[8]	- array, where transported parameters should be stored

Definition at line 3905 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 3905 of file KFParticleBaseSIMD.cxx

References fP.

void KFParticleBaseSIMD::TransportToDecayVertex

(

)

Transports the particle to its decay vertex

Definition at line 1481 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 1481 of file KFParticleBaseSIMD.cxx

References Acts::UnitConstants::e, f, fAtProductionVertex, fSFromDecay, and TransportToDS().

Referenced by SetNoDecayLength(), and SetProductionVertex().

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void KFParticleBaseSIMD::TransportToDS	(	float_v	dS,
		const float_v *	dsdr
	)

Transport the particle on a certain distane. The distance is defined by the dS=l/p parameter, where
1) l - signed distance;
2) p - momentum of the particle.

Parameters

[in]	dS	= l/p - distance normalised to the momentum of the particle to be transported on
[in]	dsdr[6]	= ds/dr partial derivatives of the parameter dS over the state vector of the current particle

Definition at line 1498 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 1498 of file KFParticleBaseSIMD.cxx

References fC, fP, fSFromDecay, and Transport().

Referenced by KFParticleFinder::ConstructTrackV0Cand(), KFParticleFinder::ConstructV0(), TransportToDecayVertex(), KFParticleSIMD::TransportToParticle(), KFParticleSIMD::TransportToPoint(), and TransportToProductionVertex().

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void KFParticleBaseSIMD::TransportToDSLine	(	float_v	dS,
		const float_v *	dsdr
	)

Transport the particle on a certain distane assuming the linear trajectory. The distance is defined by the dS=l/p parameter, where
1) l - signed distance;
2) p - momentum of the particle.

Parameters

[in]	dS	= l/p - distance normalised to the momentum of the particle to be transported on
[in]	dsdr[6]	= ds/dr partial derivatives of the parameter dS over the state vector of the current particle

Definition at line 1511 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 1511 of file KFParticleBaseSIMD.cxx

References fC, fP, fSFromDecay, and TransportLine().

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void KFParticleBaseSIMD::TransportToProductionVertex

(

)

Transports the particle to its production vertex

Definition at line 1489 of file KFParticleBaseSIMD.cxx.

View newest version in sPHENIX GitHub at line 1489 of file KFParticleBaseSIMD.cxx

References Acts::UnitConstants::e, f, fAtProductionVertex, fP, fSFromDecay, and TransportToDS().

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const float_v& KFParticleBaseSIMD::X ( ) const

inline

Retruns X coordinate of the particle, fP[0].

Definition at line 144 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 144 of file KFParticleBaseSIMD.h

References fP.

Referenced by RotateXY(), SetProductionVertex(), and KFParticleSIMD::X().

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float_v& KFParticleBaseSIMD::X ( )

inline

Modifier of X coordinate of the particle, fP[0].

Definition at line 177 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 177 of file KFParticleBaseSIMD.h

References fP.

const float_v& KFParticleBaseSIMD::Y ( ) const

inline

Retruns Y coordinate of the particle, fP[1].

Definition at line 145 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 145 of file KFParticleBaseSIMD.h

References fP.

Referenced by RotateXY(), SetProductionVertex(), and KFParticleSIMD::Y().

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float_v& KFParticleBaseSIMD::Y ( )

inline

Modifier of Y coordinate of the particle, fP[1].

Definition at line 178 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 178 of file KFParticleBaseSIMD.h

References fP.

const float_v& KFParticleBaseSIMD::Z ( ) const

inline

Retruns Z coordinate of the particle, fP[2].

Definition at line 146 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 146 of file KFParticleBaseSIMD.h

References fP.

Referenced by RotateXY(), SetProductionVertex(), and KFParticleSIMD::Z().

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float_v& KFParticleBaseSIMD::Z ( )

inline

Modifier of Z coordinate of the particle, fP[2].

Definition at line 179 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 179 of file KFParticleBaseSIMD.h

References fP.

Member Data Documentation

Bool_t KFParticleBaseSIMD::fAtProductionVertex

protected

Flag shows if particle is at the production point.

Definition at line 330 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 330 of file KFParticleBaseSIMD.h

Referenced by Construct(), KFParticleSIMD::GetAtProductionVertex(), KFParticleSIMD::GetKFParticle(), Initialize(), KFParticleSIMD::KFParticleSIMD(), SetProductionVertex(), TransportToDecayVertex(), and TransportToProductionVertex().

float_v KFParticleBaseSIMD::fC[36]

protected

Low-triangle covariance matrix of fP.

Definition at line 322 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 322 of file KFParticleBaseSIMD.h

Referenced by AddDaughter(), AddDaughterWithEnergyFit(), AddDaughterWithEnergyFitMC(), Cij(), Construct(), Covariance(), KFParticleSIMD::CovarianceMatrix(), KFParticleSIMD::Create(), GetCovariance(), GetDecayLength(), GetDecayLengthXY(), GetDeviationFromParticle(), KFParticleSIMD::GetDeviationFromParticleXY(), GetDeviationFromVertex(), KFParticleSIMD::GetDeviationFromVertexXY(), KFParticleSIMD::GetDistanceFromVertexXY(), GetDistanceToVertexLine(), GetEta(), GetLifeTime(), GetMass(), GetMeasurement(), GetMomentum(), GetPhi(), GetPt(), GetR(), Initialize(), KFParticleSIMD::KFParticleSIMD(), KFParticleSIMD::Load(), KFParticleSIMD::Rotate(), SetMassConstraint(), SetNoDecayLength(), SetNonlinearMassConstraint(), KFParticleSIMD::SetOneEntry(), SetProductionVertex(), SubtractDaughter(), SubtractFromParticle(), SubtractFromVertex(), TransportBz(), TransportCBM(), TransportLine(), TransportToDS(), and TransportToDSLine().

float_v KFParticleBaseSIMD::fChi2

protected

Chi^2.

Definition at line 325 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 325 of file KFParticleBaseSIMD.h

Referenced by AddDaughterWithEnergyFit(), AddDaughterWithEnergyFitMC(), Chi2(), KFParticleSIMD::Chi2(), Construct(), KFParticleSIMD::Create(), GetChi2(), Initialize(), KFParticleSIMD::KFParticleSIMD(), KFParticleSIMD::Load(), SetMassConstraint(), SetNoDecayLength(), SetNonlinearMassConstraint(), KFParticleSIMD::SetOneEntry(), SetProductionVertex(), SubtractDaughter(), SubtractFromParticle(), and SubtractFromVertex().

Int_t KFParticleBaseSIMD::fConstructMethod

protected

Determines the method for the particle construction.
0 - Energy considered as an independent veriable, fitted independently from momentum, without any constraints on mass
2 - Energy considered as an independent variable, fitted independently from momentum, with constraints on mass of daughter particle.

Definition at line 336 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 336 of file KFParticleBaseSIMD.h

Referenced by AddDaughter(), and SetConstructMethod().

std::vector<int_v> KFParticleBaseSIMD::fDaughterIds

protected

A vector with ids of the daughter particles:
1) if particle is created from a track - the index of the track, in this case the size of the vector is always equal to one;
2) if particle is constructed from other particles - indices of these particles in the same array.

Definition at line 341 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 341 of file KFParticleBaseSIMD.h

Referenced by AddDaughterId(), CleanDaughtersId(), DaughterIds(), GetDaughterId(), KFParticleSIMD::KFParticleSIMD(), NDaughters(), SetNDaughters(), and KFParticleSIMD::SetOneEntry().

int_v KFParticleBaseSIMD::fId

protected

Id of the particle.

Definition at line 329 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 329 of file KFParticleBaseSIMD.h

Referenced by Id(), KFParticleSIMD::KFParticleSIMD(), KFParticleSIMD::Rotate(), SetId(), and KFParticleSIMD::SetOneEntry().

float_v KFParticleBaseSIMD::fMassHypo

protected

The mass hypothesis, used for the constraints during particle construction.

Definition at line 328 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 328 of file KFParticleBaseSIMD.h

Referenced by AddDaughter(), AddDaughterWithEnergyFitMC(), KFParticleSIMD::Create(), GetMassHypo(), Initialize(), KFParticleSIMD::Load(), SetMassConstraint(), SetMassHypo(), and SetNonlinearMassConstraint().

int_v KFParticleBaseSIMD::fNDF

protected

Number of degrees of freedom.

Definition at line 324 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 324 of file KFParticleBaseSIMD.h

Referenced by AddDaughter(), AddDaughterWithEnergyFit(), AddDaughterWithEnergyFitMC(), Construct(), KFParticleSIMD::Create(), GetMeasurement(), GetNDF(), Initialize(), KFParticleSIMD::KFParticleSIMD(), KFParticleSIMD::Load(), NDF(), KFParticleSIMD::NDF(), SetMassConstraint(), SetNoDecayLength(), SetNonlinearMassConstraint(), KFParticleSIMD::SetOneEntry(), SetProductionVertex(), SubtractDaughter(), SubtractFromParticle(), and SubtractFromVertex().

float_v KFParticleBaseSIMD::fP[8]

protected

Particle parameters { X, Y, Z, Px, Py, Pz, E, S[=DecayLength/P]}.

Definition at line 321 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 321 of file KFParticleBaseSIMD.h

Referenced by AddDaughter(), AddDaughterWithEnergyFit(), AddDaughterWithEnergyFitMC(), KFParticleSIMD::Create(), E(), KFParticleSIMD::E(), GetDecayLength(), GetDecayLengthXY(), GetDeviationFromVertex(), KFParticleSIMD::GetDeviationFromVertexXY(), GetDistanceFromVertex(), KFParticleSIMD::GetDistanceFromVertexXY(), GetDistanceToVertexLine(), GetDStoParticleB(), GetDStoParticleBy(), GetDStoParticleBz(), GetDStoParticleCBM(), GetDStoParticleLine(), GetDStoPointBy(), GetDStoPointBz(), GetDStoPointCBM(), GetDStoPointLine(), GetE(), GetEta(), GetLifeTime(), GetMass(), GetMeasurement(), GetMomentum(), GetParameter(), GetPhi(), GetPt(), GetPx(), GetPy(), GetPz(), GetR(), KFParticleSIMD::GetRapidity(), GetS(), GetX(), GetY(), GetZ(), Initialize(), KFParticleSIMD::KFParticleSIMD(), KFParticleSIMD::Load(), Parameter(), KFParticleSIMD::Parameters(), Px(), KFParticleSIMD::Px(), Py(), KFParticleSIMD::Py(), Pz(), KFParticleSIMD::Pz(), KFParticleSIMD::Rotate(), RotateXY(), S(), KFParticleSIMD::S(), SetMassConstraint(), SetNoDecayLength(), SetNonlinearMassConstraint(), KFParticleSIMD::SetOneEntry(), SetProductionVertex(), SubtractDaughter(), SubtractFromParticle(), SubtractFromVertex(), TransportBz(), TransportCBM(), TransportLine(), TransportToDS(), TransportToDSLine(), TransportToProductionVertex(), X(), KFParticleSIMD::X(), Y(), KFParticleSIMD::Y(), Z(), and KFParticleSIMD::Z().

int_v KFParticleBaseSIMD::fPDG

protected

The PDG hypothesis assigned to the particle.

Definition at line 331 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 331 of file KFParticleBaseSIMD.h

Referenced by GetPDG(), KFParticleSIMD::KFParticleSIMD(), PDG(), KFParticleSIMD::SetOneEntry(), and SetPDG().

int_v KFParticleBaseSIMD::fQ

protected

The charge of the particle in the units of the elementary charge.

Definition at line 323 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 323 of file KFParticleBaseSIMD.h

Referenced by AddDaughter(), AddDaughterWithEnergyFit(), AddDaughterWithEnergyFitMC(), Construct(), KFParticleSIMD::Create(), GetDStoParticleBz(), GetDStoParticleCBM(), GetDStoPointBz(), GetQ(), Initialize(), KFParticleSIMD::KFParticleSIMD(), KFParticleSIMD::Load(), Q(), KFParticleSIMD::Q(), KFParticleSIMD::Rotate(), KFParticleSIMD::SetOneEntry(), SubtractDaughter(), SubtractFromParticle(), TransportBz(), and TransportCBM().

float_v KFParticleBaseSIMD::fSFromDecay

protected

Distance from the decay vertex to the current position.

Definition at line 326 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 326 of file KFParticleBaseSIMD.h

Referenced by AddDaughter(), AddDaughterWithEnergyFit(), AddDaughterWithEnergyFitMC(), Construct(), Initialize(), KFParticleSIMD::KFParticleSIMD(), SetProductionVertex(), SubtractDaughter(), SubtractFromParticle(), TransportToDecayVertex(), TransportToDS(), TransportToDSLine(), and TransportToProductionVertex().

float_v KFParticleBaseSIMD::SumDaughterMass

protected

Sum of the daughter particles masses. Needed to set the constraint on the minimum mass during particle construction.

Definition at line 327 of file KFParticleBaseSIMD.h.

View newest version in sPHENIX GitHub at line 327 of file KFParticleBaseSIMD.h

Referenced by AddDaughter(), AddDaughterWithEnergyFitMC(), Construct(), KFParticleSIMD::Create(), GetSumDaughterMass(), Initialize(), KFParticleSIMD::Load(), SetMassConstraint(), and SetNonlinearMassConstraint().

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

• KFParticle/blob/master/KFParticle/KFParticleBaseSIMD.h
• KFParticle/blob/master/KFParticle/KFParticleBaseSIMD.cxx