Inheritance diagram for ISRPhotonFitObject:

Collaboration diagram for ISRPhotonFitObject:

[legend]

Public Member Functions
	ISRPhotonFitObject (double px, double py, double pz, double b_, double PzMaxB_, double PzMinB_=0.)

	ISRPhotonFitObject (const ISRPhotonFitObject &rhs)
	photon spectrum parametrization (see above) More...

ISRPhotonFitObject &	operator= (const ISRPhotonFitObject &rhs)
	Assignment. More...

virtual ISRPhotonFitObject *	copy () const override
	Return a new copy of itself.

virtual ISRPhotonFitObject &	assign (const BaseFitObject &source) override
	Assign from anther object, if of same type. More...

virtual const char *	getParamName (int ilocal) const override
	Get name of parameter ilocal. More...

virtual bool	updateParams (double p[], int idim) override
	Read values from global vector, readjust vector; return: significant change. More...

virtual double	getDPx (int ilocal) const override
	Return d p_x / d par_ilocal (derivative of px w.r.t. local parameter ilocal) More...

virtual double	getDPy (int ilocal) const override
	Return d p_y / d par_ilocal (derivative of py w.r.t. local parameter ilocal) More...

virtual double	getDPz (int ilocal) const override
	Return d p_z / d par_ilocal (derivative of pz w.r.t. local parameter ilocal) More...

virtual double	getDE (int ilocal) const override
	Return d E / d par_ilocal (derivative of E w.r.t. local parameter ilocal) More...

virtual double	getFirstDerivative_Meta_Local (int iMeta, int ilocal, int metaSet) const override

virtual double	getSecondDerivative_Meta_Local (int iMeta, int ilocal, int jlocal, int metaSet) const override

virtual int	getNPar () const override

virtual bool	setMass (double mass_)
	Set mass of particle; return=success.

virtual double	getMass () const
	Get mass of particle.

virtual std::ostream &	print4Vector (std::ostream &os) const
	print the four-momentum (E, px, py, pz) More...

virtual FourVector	getFourMomentum () const

virtual double	getE () const
	Return E.

virtual double	getPx () const
	Return px.

virtual double	getPy () const
	Return py.

virtual double	getPz () const
	Return pz.

virtual double	getP () const
	Return p (momentum)

virtual double	getP2 () const
	Return p (momentum) squared.

virtual double	getPt () const
	Return pt (transverse momentum)

virtual double	getPt2 () const
	Return pt (transverse momentum) squared.

virtual void	getDerivatives (double der[], int idim) const override

virtual void	addToGlobalChi2DerMatrixNum (double *M, int idim, double eps)
	Add numerically determined derivatives of chi squared to global covariance matrix. More...

virtual void	addToGlobalChi2DerVectorNum (double *y, int idim, double eps)
	Add numerically determined derivatives of chi squared to global derivative vector. More...

virtual std::ostream &	print (std::ostream &os) const override
	print object to ostream More...

void	test1stDerivatives ()

void	test2ndDerivatives ()

double	num1stDerivative (int ilocal, double eps)
	Evaluates numerically the 1st derivative of chi2 w.r.t. a parameter. More...

double	num2ndDerivative (int ilocal1, double eps1, int ilocal2, double eps2)
	Evaluates numerically the 2nd derivative of chi2 w.r.t. 2 parameters. More...

virtual double	getChi2 () const override

Protected Types
enum	{ NPAR = 3 }

Protected Member Functions
double	PgFromPz (double pz)

void	updateCache () const override

Protected Attributes
bool	cachevalid

double	pt2

double	p2

double	p

double	pz

double	dpx0

double	dpy0

double	dpz0

double	dE0

double	dpx1

double	dpy1

double	dpz1

double	dE1

double	dpx2

double	dpy2

double	dpz2

double	dE2

double	d2pz22

double	d2E22

double	chi2

double	b

double	PzMinB

double	PzMaxB

double	dp2zFact

double	mass
	mass of particle

FourVector	fourMomentum

double	paramCycl [BaseDefs::MAXPAR]

Detailed Description

Definition at line 43 of file ISRPhotonFitObject.h.

Constructor & Destructor Documentation

◆ ISRPhotonFitObject() [1/2]

ISRPhotonFitObject	(	double	px,
		double	py,
		double	pz,
		double	b_,
		double	PzMaxB_,
		double	PzMinB_ = `0.`
	)

Parameters

b_	initial values for photon (p_x,p_y fix)

Definition at line 49 of file ISRPhotonFitObject.cc.

       : cachevalid(false),
         pt2(0), p2(0), p(0), pz(0),
         dpx0(0), dpy0(0), dpz0(0), dE0(0), dpx1(0), dpy1(0), dpz1(0), dE1(0),
         dpx2(0), dpy2(0), dpz2(0), dE2(0), d2pz22(0), d2E22(0),
         chi2(0), b(0), PzMinB(0), PzMaxB(0), dp2zFact(0)
     {
  
       assert(int(NPAR) <= int(BaseDefs::MAXPAR));
  
       initCov();
       b = b_;
       PzMinB = PzMinB_;
       PzMaxB = PzMaxB_;
 #ifdef DEBUG
       B2INFO("ISRPhotonFitObject:   b: " << b << "   PzMinB: " << PzMinB << "   PzMaxB: " << PzMaxB);
 #endif
  
       if (b <= 0. || b >= 1.) {
         B2INFO("ISRPhotonFitObject:   b must be from ]0,1[ ");
       }
       assert(b > 0. && b < 1.);
       if (PzMinB < 0. || PzMaxB <= PzMinB) {
         B2INFO("ISRPhotonFitObject:   PzMinB and PzMaxB must be chosen such that 0 <= PzMinB < PzMaxB");
       }
       assert(PzMinB >= 0.);
       assert(PzMaxB > PzMinB);
       dp2zFact = (PzMaxB - PzMinB) / b * sqrt(2. / pi_);
       double pg = PgFromPz(ppz);         // using internally Gauss-distributed parameter p_g instead of p_z
       setParam(0, px, true, true);
       setParam(1, py, true, true);
       setParam(2, pg, true);
       setMParam(0, 0.);                 // all measured parameters
       setMParam(1, 0.);                 // are assumed to be zero
       setMParam(2, 0.);                 // in this photon parametrization
 #ifdef DEBUG
       B2INFO("ISRPhotonFitObject:   Initial pg: " << pg);
 #endif
       setError(2, 1.);
       setMass(0.);
       invalidateCache();
     }

◆ ISRPhotonFitObject() [2/2]

ISRPhotonFitObject ( const ISRPhotonFitObject & rhs )

photon spectrum parametrization (see above)

Copy constructor

Parameters

rhs	right hand side

Definition at line 97 of file ISRPhotonFitObject.cc.

Member Function Documentation

◆ addToGlobalChi2DerMatrixNum()

void addToGlobalChi2DerMatrixNum	(	double *	M,
		int	idim,
		double	eps
	)

virtualinherited

Add numerically determined derivatives of chi squared to global covariance matrix.

Parameters

M	Global covariance matrix
idim	First dimension of global covariance matrix
eps	Parameter variation

Definition at line 162 of file ParticleFitObject.cc.

     {
       for (int ilocal1 = 0; ilocal1 < getNPar(); ++ilocal1) {
         int iglobal1 = getGlobalParNum(ilocal1);
         for (int ilocal2 = ilocal1; ilocal2 < getNPar(); ++ilocal2) {
           int iglobal2 = getGlobalParNum(ilocal2);
           M[idim * iglobal1 + iglobal2] += num2ndDerivative(ilocal1, eps, ilocal2, eps);
         }
       }
     }

◆ addToGlobalChi2DerVectorNum()

void addToGlobalChi2DerVectorNum	(	double *	y,
		int	idim,
		double	eps
	)

virtualinherited

Add numerically determined derivatives of chi squared to global derivative vector.

Parameters

y	Vector of chi2 derivatives
idim	Vector size
eps	Parameter variation

Definition at line 152 of file ParticleFitObject.cc.

◆ assign()

ISRPhotonFitObject & assign ( const BaseFitObject & source )

overridevirtual

Assign from anther object, if of same type.

Parameters

source The source object

Reimplemented from ParticleFitObject.

Definition at line 120 of file ISRPhotonFitObject.cc.

◆ getDE()

double getDE ( int ilocal ) const

overridevirtual

Return d E / d par_ilocal (derivative of E w.r.t. local parameter ilocal)

Parameters

ilocal Local parameter number

Implements ParticleFitObject.

Definition at line 194 of file ISRPhotonFitObject.cc.

◆ getDPx()

double getDPx ( int ilocal ) const

overridevirtual

Return d p_x / d par_ilocal (derivative of px w.r.t. local parameter ilocal)

Parameters

ilocal Local parameter number

Implements ParticleFitObject.

Definition at line 158 of file ISRPhotonFitObject.cc.

◆ getDPy()

double getDPy ( int ilocal ) const

overridevirtual

Return d p_y / d par_ilocal (derivative of py w.r.t. local parameter ilocal)

Parameters

ilocal Local parameter number

Implements ParticleFitObject.

Definition at line 170 of file ISRPhotonFitObject.cc.

◆ getDPz()

double getDPz ( int ilocal ) const

overridevirtual

Return d p_z / d par_ilocal (derivative of pz w.r.t. local parameter ilocal)

Parameters

ilocal Local parameter number

Implements ParticleFitObject.

Definition at line 182 of file ISRPhotonFitObject.cc.

◆ getParamName()

const char * getParamName ( int ilocal ) const

overridevirtual

Get name of parameter ilocal.

Parameters

ilocal Local parameter number

Definition at line 133 of file ISRPhotonFitObject.cc.

◆ num1stDerivative()

double num1stDerivative	(	int	ilocal,
		double	eps
	)

inherited

Evaluates numerically the 1st derivative of chi2 w.r.t. a parameter.

Parameters

ilocal	Local parameter number
eps	variation of local parameter

Definition at line 230 of file ParticleFitObject.cc.

◆ num2ndDerivative()

double num2ndDerivative	(	int	ilocal1,
		double	eps1,
		int	ilocal2,
		double	eps2
	)

inherited

Evaluates numerically the 2nd derivative of chi2 w.r.t. 2 parameters.

Parameters

ilocal1	1st local parameter number
eps1	variation of 1st local parameter
ilocal2	1st local parameter number
eps2	variation of 2nd local parameter

Definition at line 242 of file ParticleFitObject.cc.

◆ operator=()

ISRPhotonFitObject & operator= ( const ISRPhotonFitObject & rhs )

Assignment.

right hand side

Definition at line 107 of file ISRPhotonFitObject.cc.

◆ print()

std::ostream & print ( std::ostream & os ) const

overridevirtualinherited

print object to ostream

Parameters

os	The output stream

Definition at line 140 of file ParticleFitObject.cc.

◆ print4Vector()

std::ostream & print4Vector ( std::ostream & os ) const

virtualinherited

print the four-momentum (E, px, py, pz)

Parameters

os	The output stream

Definition at line 94 of file ParticleFitObject.cc.

◆ updateParams()

bool updateParams	(	double	p[],
		int	idim
	)

overridevirtual

Read values from global vector, readjust vector; return: significant change.

Parameters

p	The parameter vector
idim	Length of the vector

Definition at line 143 of file ISRPhotonFitObject.cc.

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

analysis/OrcaKinFit/include/ISRPhotonFitObject.h
analysis/OrcaKinFit/src/ISRPhotonFitObject.cc

Public Member Functions

Protected Types

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ ISRPhotonFitObject() [1/2]

◆ ISRPhotonFitObject() [2/2]

Member Function Documentation

◆ addToGlobalChi2DerMatrixNum()

◆ addToGlobalChi2DerVectorNum()

◆ assign()

◆ getDE()

◆ getDPx()

◆ getDPy()

◆ getDPz()

◆ getParamName()

◆ num1stDerivative()

◆ num2ndDerivative()

◆ operator=()

◆ print()

◆ print4Vector()

◆ updateParams()