CMSSW Reference Manual

TFitParticleCart::TFitParticleCart ( )

Referenced by clone().

TFitParticleCart::TFitParticleCart ( const TFitParticleCart & fitParticle )

Definition at line 36 of file TFitParticleCart.cc.

References TAbsFitParticle::_covMatrix, TAbsFitParticle::_iniparameters, TAbsFitParticle::_nPar, TAbsFitParticle::_parameters, TAbsFitParticle::_pcurr, TAbsFitParticle::_pini, TAbsFitParticle::_u1, TAbsFitParticle::_u2, and TAbsFitParticle::_u3.

00037   :TAbsFitParticle( fitParticle.GetName(), fitParticle.GetTitle() )
00038 {
00039 
00040   _nPar = fitParticle._nPar;
00041   _u1 = fitParticle._u1;
00042   _u2 = fitParticle._u2;
00043   _u3 = fitParticle._u3;
00044   _covMatrix.ResizeTo(  fitParticle._covMatrix );
00045   _covMatrix = fitParticle._covMatrix;
00046   _iniparameters.ResizeTo( fitParticle._iniparameters );
00047   _iniparameters = fitParticle._iniparameters;
00048   _parameters.ResizeTo( fitParticle._parameters );
00049   _parameters = fitParticle._parameters;
00050   _pini = fitParticle._pini;
00051   _pcurr = fitParticle._pcurr;
00052 
00053 }

TFitParticleCart::TFitParticleCart	(	TLorentzVector *	pini,
		const TMatrixD *	theCovMatrix
	)

Definition at line 55 of file TFitParticleCart.cc.

References init().

00056   :TAbsFitParticle()  
00057 {
00058   init(pini, theCovMatrix);
00059 }

TFitParticleCart::TFitParticleCart	(	const TString &	name,
		const TString &	title,
		TLorentzVector *	pini,
		const TMatrixD *	theCovMatrix
	)

Definition at line 61 of file TFitParticleCart.cc.

References init().

00063   :TAbsFitParticle(name, title)  
00064 {
00065   init(pini, theCovMatrix);
00066 }

TFitParticleCart::~TFitParticleCart ( ) [virtual]

Definition at line 80 of file TFitParticleCart.cc.

00080                                     {
00081 
00082 }

TLorentzVector * TFitParticleCart::calc4Vec ( const TMatrixD * params ) [virtual]

Implements TAbsFitParticle.

Definition at line 95 of file TFitParticleCart.cc.

References TAbsFitParticle::_nPar, TAbsFitParticle::_pini, and X.

00095                                                                    {
00096   // Calculates a 4vector corresponding to the given
00097   // parameter values
00098 
00099   if (params == 0) {
00100     return 0;
00101   }
00102 
00103   if ( params->GetNcols() != 1 || params->GetNrows() !=_nPar ) {
00104     edm::LogError ("WrongMatrixSize")
00105       << GetName() << "::calc4Vec - Parameter matrix has wrong size.";
00106     return 0;
00107   }
00108   
00109   Double_t X = (*params)(0,0);
00110   Double_t Y = (*params)(1,0);
00111   Double_t Z = (*params)(2,0);
00112   Double_t E =  TMath::Sqrt( X*X + Y*Y + Z*Z + (*params)(3,0)*(*params)(3,0)*_pini.M2() );
00113 
00114   TLorentzVector* vec = new TLorentzVector( X, Y, Z, E );
00115   return vec;
00116 
00117 }

TAbsFitParticle * TFitParticleCart::clone ( TString newname = "" ) const [virtual]

Implements TAbsFitParticle.

Definition at line 68 of file TFitParticleCart.cc.

References TFitParticleCart().

00068                                                                 {
00069   // Returns a copy of itself
00070 
00071   TAbsFitParticle* myclone = new TFitParticleCart( *this );
00072   if ( newname.Length() > 0 ) myclone->SetName(newname);
00073   return myclone;
00074 
00075 }

TMatrixD * TFitParticleCart::getDerivative ( ) [virtual]

Implements TAbsFitParticle.

Definition at line 164 of file TFitParticleCart.cc.

References TAbsFitParticle::_parameters, TAbsFitParticle::_pcurr, and TAbsFitParticle::_pini.

00164                                           {
00165   // returns derivative dP/dy with P=(p,E) and y=(px, py, pz, d) 
00166   // the free parameters of the fit. The columns of the matrix contain 
00167   // (dP/dpx, dP/dpy, ...).
00168 
00169   TMatrixD* DerivativeMatrix = new TMatrixD(4,4);
00170   (*DerivativeMatrix) *= 0.;
00171 
00172   //1st column: dP/dx
00173   (*DerivativeMatrix)(0,0)=1.;
00174   (*DerivativeMatrix)(1,0)=0.;
00175   (*DerivativeMatrix)(2,0)=0.;
00176   (*DerivativeMatrix)(3,0)=0.;
00177 
00178   //2nd column: dP/dy
00179   (*DerivativeMatrix)(0,1)=0;
00180   (*DerivativeMatrix)(1,1)=1;
00181   (*DerivativeMatrix)(2,1)=0;
00182   (*DerivativeMatrix)(3,1)=0.;
00183 
00184    //3rd column: dP/dz
00185   (*DerivativeMatrix)(0,2)=0.;
00186   (*DerivativeMatrix)(1,2)=0.;
00187   (*DerivativeMatrix)(2,2)=1.;
00188   (*DerivativeMatrix)(3,2)=0.;
00189 
00190    //4th column: dP/dm
00191   (*DerivativeMatrix)(0,3)=0.;
00192   (*DerivativeMatrix)(1,3)=0.;
00193   (*DerivativeMatrix)(2,3)=0.;
00194   (*DerivativeMatrix)(3,3)=_pini.M()*_pini.M()*_parameters(3,0)/_pcurr.E();
00195 
00196   return DerivativeMatrix;  
00197 }

void TFitParticleCart::init	(	TLorentzVector *	pini,
		const TMatrixD *	theCovMatrix
	)			`[protected]`

Definition at line 87 of file TFitParticleCart.cc.

References TAbsFitParticle::_nPar, TAbsFitParticle::setCovMatrix(), and setIni4Vec().

Referenced by TFitParticleCart().

00087                                                                                {
00088 
00089   _nPar = 4;
00090   setIni4Vec(pini);
00091   setCovMatrix(theCovMatrix);
00092 
00093 }

void TFitParticleCart::setIni4Vec ( const TLorentzVector * pini ) [virtual]

Implements TAbsFitParticle.

Definition at line 119 of file TFitParticleCart.cc.

References TAbsFitParticle::_iniparameters, TAbsFitParticle::_nPar, TAbsFitParticle::_parameters, TAbsFitParticle::_pcurr, TAbsFitParticle::_pini, TAbsFitParticle::_u1, TAbsFitParticle::_u2, and TAbsFitParticle::_u3.

Referenced by init().

00119                                                             {
00120   // Set the initial 4vector. Will also set the 
00121   // inital parameter values
00122 
00123   if (pini == 0) {
00124 
00125     _u1.SetXYZ(0., 0., 0.);
00126     _u3.SetXYZ(0., 0., 0.);
00127     _u2.SetXYZ(0., 0., 0.);
00128     _pini.SetXYZT(0., 0., 0., 0.);
00129     _pcurr = _pini;
00130 
00131     _iniparameters.ResizeTo(_nPar,1);
00132     _iniparameters(0,0)=0;
00133     _iniparameters(1,0)=0;
00134     _iniparameters(2,0)=0;
00135     _iniparameters(3,0)=0.;
00136 
00137     _parameters.ResizeTo(_nPar,1);
00138     _parameters(0,0)=0.;
00139     _parameters(1,0)=0.;
00140     _parameters(2,0)=0.;   
00141     _parameters(3,0)=0.;   
00142     
00143   } else {
00144     
00145     _pini = (*pini);
00146     _pcurr = _pini;
00147 
00148     _u1.SetXYZ( 1., 0., 0. );
00149     _u2.SetXYZ( 0., 1., 0. );
00150     _u3.SetXYZ( 0., 0., 1. );
00151   
00152     _iniparameters.ResizeTo(_nPar,1);
00153     _iniparameters(0,0)=_pini.X();
00154     _iniparameters(1,0)=_pini.Y();
00155     _iniparameters(2,0)=_pini.Z();
00156     _iniparameters(3,0)=1.;
00157     _parameters.ResizeTo(_nPar,1);
00158     _parameters = _iniparameters;
00159 
00160   }
00161 
00162 }

TMatrixD * TFitParticleCart::transform ( const TLorentzVector & vec ) [virtual]

Implements TAbsFitParticle.

Definition at line 199 of file TFitParticleCart.cc.

References TAbsFitParticle::_nPar, and TAbsFitParticle::_pini.

00199                                                                {
00200   // Returns the parameters corresponding to the given 
00201   // 4vector
00202 
00203   TMatrixD* tparams = new TMatrixD( _nPar, 1 );
00204   (*tparams)(0,0) = vec.X();
00205   (*tparams)(1,0) = vec.Y();
00206   (*tparams)(2,0) = vec.Z();
00207   (*tparams)(3,0) = vec.M()/_pini.M();
00208 
00209   return tparams;
00210 
00211 }


Public Member Functions
virtual TLorentzVector *	calc4Vec (const TMatrixD *params)
virtual TAbsFitParticle *	clone (TString newname="") const
virtual TMatrixD *	getDerivative ()
virtual void	setIni4Vec (const TLorentzVector *pini)
	TFitParticleCart (const TString &name, const TString &title, TLorentzVector pini, const TMatrixD theCovMatrix)
	TFitParticleCart (TLorentzVector pini, const TMatrixD theCovMatrix)
	TFitParticleCart (const TFitParticleCart &fitParticle)
	TFitParticleCart ()
virtual TMatrixD *	transform (const TLorentzVector &vec)
virtual	~TFitParticleCart ()
Protected Member Functions
void	init (TLorentzVector pini, const TMatrixD theCovMatrix)

TFitParticleCart Class Reference

Public Member Functions

Protected Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation