pat::CandKinResolution Class Reference

#include <CandKinResolution.h>

Public Types
typedef math::XYZTLorentzVector	LorentzVector
enum	Parametrization {   Invalid =0, Cart = 0x04, ECart = 0x14, Spher = 0x24,   ESpher = 0x34, MomDev = 0x44, EMomDev = 0x54, MCCart = 0x03,   MCSpher = 0x13, MCPInvSpher = 0x23, EtEtaPhi = 0x33, EtThetaPhi = 0x43,   MCMomDev = 0x53, EScaledMomDev = 0x63 }
typedef float	Scalar

Public Member Functions
	CandKinResolution ()
	CandKinResolution (Parametrization parametrization, const std::vector< Scalar > &covariances, const std::vector< Scalar > &constraints=std::vector< Scalar >())
	CandKinResolution (Parametrization parametrization, const AlgebraicSymMatrix44 &covariance, const std::vector< Scalar > &constraints=std::vector< Scalar >())
	Fill in a cresolution object given a parametrization code, a covariance matrix and a vector of constraints. More...
const std::vector< Scalar > &	constraints () const
	The constraints associated with this parametrization. More...
const AlgebraicSymMatrix44 &	covariance () const
	Returns the full covariance matrix. More...
uint32_t	dimension () const
	Returns the number of free parameters in this parametrization. More...
Parametrization	parametrization () const
	Return the code of the parametrization used in this object. More...
double	resolE (const LorentzVector &p4) const
	Resolution on energy, given the 4-momentum of the associated Candidate. More...
double	resolEt (const LorentzVector &p4) const
	Resolution on et, given the 4-momentum of the associated Candidate. More...
double	resolEta (const LorentzVector &p4) const
	Resolution on eta, given the 4-momentum of the associated Candidate. More...
double	resolM (const LorentzVector &p4) const
double	resolP (const LorentzVector &p4) const
	Resolution on p, given the 4-momentum of the associated Candidate. More...
double	resolPhi (const LorentzVector &p4) const
	Resolution on phi, given the 4-momentum of the associated Candidate. More...
double	resolPInv (const LorentzVector &p4) const
	Resolution on 1/p, given the 4-momentum of the associated Candidate. More...
double	resolPt (const LorentzVector &p4) const
	Resolution on pt, given the 4-momentum of the associated Candidate. More...
double	resolPx (const LorentzVector &p4) const
	Resolution on px, given the 4-momentum of the associated Candidate. More...
double	resolPy (const LorentzVector &p4) const
	Resolution on py, given the 4-momentum of the associated Candidate. More...
double	resolPz (const LorentzVector &p4) const
	Resolution on pz, given the 4-momentum of the associated Candidate. More...
double	resolTheta (const LorentzVector &p4) const
	Resolution on theta, given the 4-momentum of the associated Candidate. More...
	~CandKinResolution ()

Static Public Member Functions
static int	dimensionFrom (Parametrization parametrization)
static void	fillMatrixFrom (Parametrization parametrization, const std::vector< Scalar > &covariances, AlgebraicSymMatrix44 &covmatrix)

Private Member Functions
void	fillMatrix ()
	Fill matrix from vector. More...
void	fillVector ()
	Fill vectoor from matrix. More...

Private Attributes
std::vector< Scalar >	constraints_
	Constraints. More...
std::vector< Scalar >	covariances_
	Matrix, streamed as a vector. More...
AlgebraicSymMatrix44	covmatrix_
	Transient copy of the full 4x4 covariance matrix. More...
Parametrization	parametrization_
	Parametrization code. More...

Detailed Description

Definition at line 10 of file CandKinResolution.h.

Member Typedef Documentation

typedef math::XYZTLorentzVector pat::CandKinResolution::LorentzVector

Parametrizations

(lowercase means values, uppercase means fixed parameters)
Cart = (px, py, pz, m) KinFitter uses (px, py, pz, m/M0) with M0 = mass of the starting p4
ECart = (px, py, pz, e) as in KinFitter
MCCart = (px, py, pz, M) as in KinFitter
Spher = (p, theta, phi, m) KinFitter uses (p, theta, phi, m/M0) with M0 = mass of the starting p4
ESpher = (p, theta, phi, e) KinFitter uses (p, theta, phi, e/E0) with E0 = energy of the starting
MCSpher = (p, eta, phi, M) as in KinFitter
MCPInvSpher = (1/p, theta, phi, M) as in KinFitter
EtEtaPhi = (et, eta, phi, M == 0) as in KinFitter
EtThetaPhi = (et, theta, phi, M == 0) as in KinFitter
MomDev = (p/P0, dp_theta, dp_phi, m/M0), so that P = [0]*|P0|*u_r + [1]*u_theta + [2]*u_phi
the "u_<xyz>" are polar unit vectors around the initial momentum P0, their directions are:
u_r ~ P0, u_phi ~ u_z x u_r, u_theta ~ u_r x u_phi M0 is the mass of the initial 4-momentum.
EMomDev = (p/P0, dp_theta, dp_phi, E/E0) with the P defined as for MomDev
MCMomDev = (p/P0, dp_theta, dp_phi, M) with the P defined as for MomDev
EScaledMomDev = (p/P0, dp_theta, dp_phi,E/P=E0/P0) with the P defined as for MomDev, fixed E/p to E0/P0

Definition at line 32 of file CandKinResolution.h.

typedef float pat::CandKinResolution::Scalar

Definition at line 33 of file CandKinResolution.h.

Member Enumeration Documentation

enum pat::CandKinResolution::Parametrization

Enumerator
Invalid
Cart
ECart
Spher
ESpher
MomDev
EMomDev
MCCart
MCSpher
MCPInvSpher
EtEtaPhi
EtThetaPhi
MCMomDev
EScaledMomDev

Definition at line 35 of file CandKinResolution.h.

                             { Invalid=0, 
                // 4D = 0xN4
                Cart          = 0x04, 
                ECart         = 0x14, 
                Spher         = 0x24, 
                ESpher        = 0x34, 
                MomDev        = 0x44, 
                EMomDev       = 0x54, 
                // 3D =0xN3
                MCCart        = 0x03, 
                MCSpher       = 0x13, 
                MCPInvSpher   = 0x23, 
                EtEtaPhi      = 0x33, 
                EtThetaPhi    = 0x43,
                MCMomDev      = 0x53, 
                EScaledMomDev = 0x63
                };

Constructor & Destructor Documentation

pat::CandKinResolution::CandKinResolution

(

)

Definition at line 6 of file CandKinResolution.cc.

                                        : 
    parametrization_(Invalid), 
    covariances_(),
    constraints_(),
    covmatrix_() 
{ 
}

pat::CandKinResolution::CandKinResolution	(	Parametrization	parametrization,
		const std::vector< Scalar > &	covariances,
		const std::vector< Scalar > &	constraints = std::vector<Scalar>()
	)

Create a resolution object given a parametrization code, a covariance matrix (streamed as a vector) and a vector of constraints.

In the vector you can put either the full triangular block or just the diagonal terms

The triangular block should be written in a way that the constructor AlgebraicSymMatrixNN(covariance.begin(), covariance.end()) works (N = 3 or 4)

Definition at line 14 of file CandKinResolution.cc.

References fillMatrix().

                                                                                                                                                   :
    parametrization_(parametrization),
    covariances_(covariances), 
    constraints_(constraints),
    covmatrix_()
{
    fillMatrix();
}

pat::CandKinResolution::CandKinResolution	(	Parametrization	parametrization,
		const AlgebraicSymMatrix44 &	covariance,
		const std::vector< Scalar > &	constraints = std::vector<Scalar>()
	)

Fill in a cresolution object given a parametrization code, a covariance matrix and a vector of constraints.

Definition at line 23 of file CandKinResolution.cc.

References fillMatrix(), and fillVector().

                                                                                                                                                     :
    parametrization_(parametrization),
    covariances_(), 
    constraints_(constraints),
    covmatrix_(covariance)
{
    fillVector();
    if (sizeof(double) != sizeof(Scalar)) { // should become boost::mpl::if_c
        fillMatrix(); // forcing double => float => double conversion 
    }
}

pat::CandKinResolution::~CandKinResolution

(

)

Definition at line 35 of file CandKinResolution.cc.

                                         {
}

Member Function Documentation

const std::vector<Scalar>& pat::CandKinResolution::constraints ( ) const

inline

The constraints associated with this parametrization.

Definition at line 84 of file CandKinResolution.h.

References constraints_.

{ return constraints_; }

const AlgebraicSymMatrix44& pat::CandKinResolution::covariance ( void  ) const

inline

Returns the full covariance matrix.

Definition at line 79 of file CandKinResolution.h.

References covmatrix_.

                                                         { 
            return covmatrix_; 
        }

uint32_t pat::CandKinResolution::dimension ( ) const

inline

Returns the number of free parameters in this parametrization.

Definition at line 74 of file CandKinResolution.h.

References dimensionFrom(), and parametrization_.

                                   { 
            return dimensionFrom(parametrization_);
        }

static int pat::CandKinResolution::dimensionFrom ( Parametrization  parametrization )

inlinestatic

Definition at line 123 of file CandKinResolution.h.

Referenced by dimension().

                                                                  {
          return (static_cast<uint32_t>(parametrization) & 0x0F);
        }

void pat::CandKinResolution::fillMatrix ( )

private

Fill matrix from vector.

Definition at line 116 of file CandKinResolution.cc.

Referenced by CandKinResolution().

                                      { 
    fillMatrixFrom(parametrization_, covariances_, covmatrix_);
}

void pat::CandKinResolution::fillMatrixFrom ( Parametrization  parametrization, const std::vector< Scalar > &  covariances, AlgebraicSymMatrix44 &  covmatrix  )

static

Definition at line 96 of file CandKinResolution.cc.

References pat::helper::ParametrizationHelper::dimension(), and i.

                                                                             { 
    int dimension = dimensionFrom(parametrization);
    if (dimension == 3) {
        if (covariances.size() == 3) {
            for (int i = 0; i < 3; ++i) covmatrix(i,i) = covariances[i];
        } else {
            covmatrix.Place_at(AlgebraicSymMatrix33(covariances.begin(), covariances.end()), 0, 0);
        }
    } else if (dimension == 4) {
        if (covariances.size() == 4) {
            for (int i = 0; i < 4; ++i) covmatrix(i,i) = covariances[i];
        } else {
            covmatrix = AlgebraicSymMatrix44(covariances.begin(), covariances.end());
        }
    }
}

void pat::CandKinResolution::fillVector ( )

private

Fill vectoor from matrix.

Definition at line 87 of file CandKinResolution.cc.

References pat::helper::ParametrizationHelper::dimension().

Referenced by CandKinResolution().

                                      { 
    if (dimension() == 3) {
        AlgebraicSymMatrix33 sub = covmatrix_.Sub<AlgebraicSymMatrix33>(0,0);
        covariances_.insert(covariances_.end(), sub.begin(), sub.end());
    } else {
        covariances_.insert(covariances_.end(), covmatrix_.begin(), covmatrix_.end());
    }
}

Parametrization pat::CandKinResolution::parametrization ( ) const

inline

Return the code of the parametrization used in this object.

Definition at line 71 of file CandKinResolution.h.

References parametrization_.

{ return parametrization_; }

double pat::CandKinResolution::resolE

(

const LorentzVector &

p4

)

const

Resolution on energy, given the 4-momentum of the associated Candidate.

Definition at line 50 of file CandKinResolution.cc.

References pat::helper::ResolutionHelper::getResolE().

Referenced by pat::PATObject< reco::Muon >::resolE().

{
    return pat::helper::ResolutionHelper::getResolE(parametrization_, covmatrix_, p4);
}

double pat::CandKinResolution::resolEt

(

const LorentzVector &

p4

)

const

Resolution on et, given the 4-momentum of the associated Candidate.

Definition at line 54 of file CandKinResolution.cc.

References pat::helper::ResolutionHelper::getResolEt().

Referenced by pat::PATObject< reco::Muon >::resolEt().

{
    return pat::helper::ResolutionHelper::getResolEt(parametrization_, covmatrix_, p4);
}

double pat::CandKinResolution::resolEta

(

const LorentzVector &

p4

)

const

Resolution on eta, given the 4-momentum of the associated Candidate.

Definition at line 38 of file CandKinResolution.cc.

References pat::helper::ResolutionHelper::getResolEta().

Referenced by pat::PATObject< reco::Muon >::resolEta().

{
    return pat::helper::ResolutionHelper::getResolEta(parametrization_, covmatrix_, p4);
}

double pat::CandKinResolution::resolM

(

const LorentzVector &

p4

)

const

Resolution on the invariant mass, given the 4-momentum of the associated Candidate Warning: returns 0 for mass-constrained parametrizations.

Definition at line 58 of file CandKinResolution.cc.

References pat::helper::ResolutionHelper::getResolM().

Referenced by pat::PATObject< reco::Muon >::resolM().

{
    return pat::helper::ResolutionHelper::getResolM(parametrization_, covmatrix_, p4);
}

double pat::CandKinResolution::resolP

(

const LorentzVector &

p4

)

const

Resolution on p, given the 4-momentum of the associated Candidate.

Definition at line 62 of file CandKinResolution.cc.

References pat::helper::ResolutionHelper::getResolP().

Referenced by pat::PATObject< reco::Muon >::resolP().

{
    return pat::helper::ResolutionHelper::getResolP(parametrization_, covmatrix_, p4);
}

double pat::CandKinResolution::resolPhi

(

const LorentzVector &

p4

)

const

Resolution on phi, given the 4-momentum of the associated Candidate.

Definition at line 46 of file CandKinResolution.cc.

References pat::helper::ResolutionHelper::getResolPhi().

Referenced by pat::PATObject< reco::Muon >::resolPhi().

{
    return pat::helper::ResolutionHelper::getResolPhi(parametrization_, covmatrix_, p4);
}

double pat::CandKinResolution::resolPInv

(

const LorentzVector &

p4

)

const

Resolution on 1/p, given the 4-momentum of the associated Candidate.

Definition at line 70 of file CandKinResolution.cc.

References pat::helper::ResolutionHelper::getResolPInv().

Referenced by pat::PATObject< reco::Muon >::resolPInv().

{
    return pat::helper::ResolutionHelper::getResolPInv(parametrization_, covmatrix_, p4);
}

double pat::CandKinResolution::resolPt

(

const LorentzVector &

p4

)

const

Resolution on pt, given the 4-momentum of the associated Candidate.

Definition at line 66 of file CandKinResolution.cc.

References pat::helper::ResolutionHelper::getResolPt().

Referenced by pat::PATObject< reco::Muon >::resolPt().

{
    return pat::helper::ResolutionHelper::getResolPt(parametrization_, covmatrix_, p4);
}

double pat::CandKinResolution::resolPx

(

const LorentzVector &

p4

)

const

Resolution on px, given the 4-momentum of the associated Candidate.

Definition at line 74 of file CandKinResolution.cc.

References pat::helper::ResolutionHelper::getResolPx().

Referenced by pat::PATObject< reco::Muon >::resolPx().

{
    return pat::helper::ResolutionHelper::getResolPx(parametrization_, covmatrix_, p4);
}

double pat::CandKinResolution::resolPy

(

const LorentzVector &

p4

)

const

Resolution on py, given the 4-momentum of the associated Candidate.

Definition at line 78 of file CandKinResolution.cc.

References pat::helper::ResolutionHelper::getResolPy().

Referenced by pat::PATObject< reco::Muon >::resolPy().

{
    return pat::helper::ResolutionHelper::getResolPy(parametrization_, covmatrix_, p4);
}

double pat::CandKinResolution::resolPz

(

const LorentzVector &

p4

)

const

Resolution on pz, given the 4-momentum of the associated Candidate.

Definition at line 82 of file CandKinResolution.cc.

References pat::helper::ResolutionHelper::getResolPz().

Referenced by pat::PATObject< reco::Muon >::resolPz().

{
    return pat::helper::ResolutionHelper::getResolPz(parametrization_, covmatrix_, p4);
}

double pat::CandKinResolution::resolTheta

(

const LorentzVector &

p4

)

const

Resolution on theta, given the 4-momentum of the associated Candidate.

Definition at line 42 of file CandKinResolution.cc.

References pat::helper::ResolutionHelper::getResolTheta().

Referenced by pat::PATObject< reco::Muon >::resolTheta().

{
    return pat::helper::ResolutionHelper::getResolTheta(parametrization_, covmatrix_, p4);
}

Member Data Documentation

std::vector<Scalar> pat::CandKinResolution::constraints_

private

Constraints.

Definition at line 137 of file CandKinResolution.h.

Referenced by constraints().

std::vector<Scalar> pat::CandKinResolution::covariances_

private

Matrix, streamed as a vector.

Definition at line 135 of file CandKinResolution.h.

AlgebraicSymMatrix44 pat::CandKinResolution::covmatrix_

private

Transient copy of the full 4x4 covariance matrix.

Definition at line 142 of file CandKinResolution.h.

Referenced by covariance().

Parametrization pat::CandKinResolution::parametrization_

private

Parametrization code.

Definition at line 133 of file CandKinResolution.h.

Referenced by dimension(), and parametrization().