TrackingDetails.h File Reference

#include "xAODTracking/TrackingPrimitives.h"
#include "Math/Vector4D.h"
#include <span>

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Namespaces
	xAOD
	ICaloAffectedTool is abstract interface for tools checking if 4 mom is in calo affected region.
	xAOD::TrackingDetails

Typedefs
using	xAOD::TrackingDetails::GenVecFourMom_t = ROOT::Math::LorentzVector< ROOT::Math::PxPyPzM4D< double > >
	Base 4 Momentum type for TrackParticle. More...

Enumerations
enum	xAOD::TrackingDetails::covMatrixIndex {   xAOD::TrackingDetails::d0_index =0, xAOD::TrackingDetails::z0_index =1, xAOD::TrackingDetails::phi_index =2, xAOD::TrackingDetails::th_index =3,   xAOD::TrackingDetails::qp_index =4 }

Functions
float	xAOD::TrackingDetails::charge (float qOverP)
GenVecFourMom_t	xAOD::TrackingDetails::genvecP4 (float qOverP, float thetaT, float phiT, double m)
bool	xAOD::TrackingDetails::definingParametersCovMatrixOffDiagCompr (std::span< const float > covMatrixOffDiag)
xAOD::ParametersCovMatrix_t	xAOD::TrackingDetails::definingParametersCovMatrix (std::span< const float > covMatrixDiag, std::span< const float > covMatrixOffDiag, bool &valid)

Variables
constexpr std::size_t	xAOD::TrackingDetails::COVMATRIX_OFFDIAG_VEC_COMPR_SIZE = 6
constexpr std::array< std::pair< covMatrixIndex, covMatrixIndex >, COVMATRIX_OFFDIAG_VEC_COMPR_SIZE >	xAOD::TrackingDetails::covMatrixComprIndexPairs

Detailed Description

Helper functions for TrackingDetails accessors

This file contains helper functions for more complex accessors in xAOD::TrackParticle, and TrackingHelpers that are shared with the columnar environment. These are all implemented as inline standalone functions that get all the input variables passed in. That completely separates them from the xAOD classes/functions, as well as from the columnar environment.

This is implemented as header-only inline code, which should give it large flexibility in how it can be used without adding additional overhead. If any of these functions is too heavy it can later on be turned into a non-inlined function.

@warn None of these functions are meant to be called by the user directly. These are meant as the backend implementations of the corresponding accessors in xAOD::TrackingDetails and the corresponding columnar accessors.

Definition in file TrackingDetails.h.