Class to calculate the Sphericity tensor eigenvalues and eigenvectors starting from an array of 3-momenta The tensor itself is not stored, only its eigenvalues and eigenvectors are. More...

#include <SphericityEigenvalues.h>

Collaboration diagram for SphericityEigenvalues:

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Public Member Functions
	SphericityEigenvalues (const std::vector< ROOT::Math::XYZVector > &momenta)
	Constructor with an array of 3-momenta.

	~SphericityEigenvalues ()
	Default destructor.

void	setMomenta (const std::vector< ROOT::Math::XYZVector > &momenta)
	Sets the list of momenta to be used in the calculation overwriting the previous values.

void	calculateEigenvalues ()
	Calculates eigenvalues and eigenvectors.

double	getEigenvalue (short i) const
	Returns the i-th Eigenvalue.

ROOT::Math::XYZVector	getEigenvector (short i) const
	Returns the i-th Eigenvector.

Private Attributes
double	m_lambda [3] = {0.}
	The eigenvalues.

ROOT::Math::XYZVector	m_eVector [3]
	The eigenvectors.

std::vector< ROOT::Math::XYZVector >	m_momenta
	The particles' momenta.

Detailed Description

Class to calculate the Sphericity tensor eigenvalues and eigenvectors starting from an array of 3-momenta The tensor itself is not stored, only its eigenvalues and eigenvectors are.

Definition at line 24 of file SphericityEigenvalues.h.

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

analysis/ContinuumSuppression/include/SphericityEigenvalues.h
analysis/ContinuumSuppression/src/SphericityEigenvalues.cc

Public Member Functions

Private Attributes

Detailed Description