Trk::GenParticleJet Class Reference

short class to organise MC generated particles as a jet. More...

#include <GenParticleJet.h>

Collaboration diagram for Trk::GenParticleJet:

Public Member Functions
	GenParticleJet ()
	~GenParticleJet ()
void	setEnergy (double energy)
double	getEnergy () const
HepMC::ConstGenParticlePtr	getParticle (unsigned int i) const
std::pair< HepMC::ConstGenParticlePtr, int >	getIndexedParticle (unsigned int i)
const std::vector< HepMC::ConstGenParticlePtr > &	getParticles () const
const std::vector< int > &	getIndicesInEvent () const
int	getNumParticles () const
void	addParticle (HepMC::ConstGenParticlePtr part, int indexInEvent=-1)
HepGeom::Vector3D< double >	getMomentum () const
double	getThrust () const
double	getSphericity () const

Private Attributes
std::vector< HepMC::ConstGenParticlePtr >	m_particles
std::vector< int >	m_indices
double	m_energy
HepGeom::Vector3D< double >	m_momentum
double	m_totalPt2
double	m_totalMom2
double	m_pDotJetAxis
double	m_magP

Detailed Description

short class to organise MC generated particles as a jet.

Needed at the level of tracking validation to be independent of reconstruction inefficiency inside the core of jets.

Author

Loek Hooft van Huysduynen

Definition at line 31 of file GenParticleJet.h.

Constructor & Destructor Documentation

GenParticleJet()

Trk::GenParticleJet::GenParticleJet ( )

inline

Definition at line 35 of file GenParticleJet.h.

                  : m_particles(), m_indices(), m_energy(0.), m_momentum(0.0, 0.0, 0.0), m_totalPt2(0.), m_totalMom2(0.), m_pDotJetAxis(0.), m_magP(0.)
    {
        
    }; // constructor

~GenParticleJet()

Trk::GenParticleJet::~GenParticleJet ( )

inline

Definition at line 40 of file GenParticleJet.h.

{}; // destructor

Member Function Documentation

addParticle()

void Trk::GenParticleJet::addParticle ( HepMC::ConstGenParticlePtr part, int indexInEvent = -1 )

inline

Definition at line 61 of file GenParticleJet.h.

                                          {
    m_particles.push_back(part);
    m_indices.push_back(indexInEvent);
    m_energy = m_energy + part->momentum().e();
    HepGeom::Vector3D<double> moment(part->momentum().px(), part->momentum().py(), part->momentum().pz());
    m_momentum = m_momentum + moment;
 
    m_totalMom2 = m_totalMom2 + pow((moment.mag()), 2);
    m_magP = m_magP + moment.mag();
    HepGeom::Vector3D<double> partMom(part->momentum().px(), part->momentum().py(), part->momentum().pz());
    double longMoment = partMom.dot((m_momentum)/(m_momentum.mag()));
    m_pDotJetAxis = m_pDotJetAxis + longMoment;
    m_totalPt2 = m_totalPt2 + pow(partMom.mag(), 2) - pow(longMoment, 2);
  }

getEnergy()

double Trk::GenParticleJet::getEnergy ( ) const

inline

Definition at line 44 of file GenParticleJet.h.

{return m_energy;}

getIndexedParticle()

std::pair< HepMC::ConstGenParticlePtr, int > Trk::GenParticleJet::getIndexedParticle ( unsigned int i )

inline

Definition at line 50 of file GenParticleJet.h.

    {
      return std::make_pair(m_particles.at(i),m_indices.at(i));
    }

getIndicesInEvent()

const std::vector< int > & Trk::GenParticleJet::getIndicesInEvent ( ) const

inline

Definition at line 57 of file GenParticleJet.h.

{return m_indices;}

getMomentum()

HepGeom::Vector3D< double > Trk::GenParticleJet::getMomentum ( ) const

inline

Definition at line 77 of file GenParticleJet.h.

{return m_momentum;}

getNumParticles()

int Trk::GenParticleJet::getNumParticles ( ) const

inline

Definition at line 59 of file GenParticleJet.h.

{return m_particles.size();}

getParticle()

HepMC::ConstGenParticlePtr Trk::GenParticleJet::getParticle ( unsigned int i ) const

inline

Definition at line 46 of file GenParticleJet.h.

    {
      return m_particles.at(i);
    }

getParticles()

const std::vector< HepMC::ConstGenParticlePtr > & Trk::GenParticleJet::getParticles ( ) const

inline

Definition at line 55 of file GenParticleJet.h.

{return m_particles;}

getSphericity()

double Trk::GenParticleJet::getSphericity ( ) const

inline

Definition at line 80 of file GenParticleJet.h.

{return m_totalPt2/m_totalMom2;}

getThrust()

double Trk::GenParticleJet::getThrust ( ) const

inline

Definition at line 79 of file GenParticleJet.h.

{return m_pDotJetAxis/m_magP;}

setEnergy()

void Trk::GenParticleJet::setEnergy ( double energy )

inline

Definition at line 42 of file GenParticleJet.h.

{m_energy = energy;}

Member Data Documentation

m_energy

double Trk::GenParticleJet::m_energy

private

Definition at line 86 of file GenParticleJet.h.

m_indices

std::vector< int > Trk::GenParticleJet::m_indices

private

Definition at line 85 of file GenParticleJet.h.

m_magP

double Trk::GenParticleJet::m_magP

private

Definition at line 91 of file GenParticleJet.h.

m_momentum

HepGeom::Vector3D<double> Trk::GenParticleJet::m_momentum

private

Definition at line 87 of file GenParticleJet.h.

m_particles

std::vector<HepMC::ConstGenParticlePtr > Trk::GenParticleJet::m_particles

private

Definition at line 84 of file GenParticleJet.h.

m_pDotJetAxis

double Trk::GenParticleJet::m_pDotJetAxis

private

Definition at line 90 of file GenParticleJet.h.

m_totalMom2

double Trk::GenParticleJet::m_totalMom2

private

Definition at line 89 of file GenParticleJet.h.

m_totalPt2

double Trk::GenParticleJet::m_totalPt2

private

Definition at line 88 of file GenParticleJet.h.

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

• GenParticleJet.h