Inheritance diagram for PhotosHEPEVTParticle:

Collaboration diagram for PhotosHEPEVTParticle:

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Public Member Functions
	~PhotosHEPEVTParticle ()
	Default destructor.

	PhotosHEPEVTParticle (int pdgid, int status, double px, double py, double pz, double e, double m, int ms, int me, int ds, int de)
	Default constructor.

void	addDaughter (PhotosParticle *daughter)
	Add a new daughter to this particle.

void	setMothers (std::vector< PhotosParticle * > mothers)
	Set the mothers of this particle via a vector of PhotosParticle.

void	setDaughters (std::vector< PhotosParticle * > daughters)
	Set the daughters of this particle via a vector of PhotosParticle.

std::vector< PhotosParticle * >	getMothers ()
	Returns the mothers of this particle via a vector of PhotosParticle.

std::vector< PhotosParticle * >	getDaughters ()
	Returns the daughters of this particle via a vector of PhotosParticle.

std::vector< PhotosParticle * >	getAllDecayProducts ()
	Returns all particles in the decay tree of this particle via a vector of PhotosParticle.

bool	checkMomentumConservation ()
	Check that the 4 momentum in conserved in the decay of this particle.

PhotosHEPEVTParticle *	createNewParticle (int pdg_id, int status, double mass, double px, double py, double pz, double e)
	Creates a new particle of type PhotosHEPEVTParticle, with the given properties. More...

void	createHistoryEntry ()
	Creating history entries not implemented in HEPEVT.

void	createSelfDecayVertex (PhotosParticle *out)
	Create a self-decay vertex for this particle with 'out' being the outgoing particle in new vertex.

bool	isDaughterOf (PhotosHEPEVTParticle *p)
	Check if particle 'p' is daughter of this particle.

bool	isMotherOf (PhotosHEPEVTParticle *p)
	Check if particle 'p' is mother of this particle.

void	print ()
	Print information on this particle into standard output.

void	setPdgID (int pdg_id)
	Set the PDG ID code of this particle.

void	setStatus (int statu)
	Set the status of this particle.

void	setMass (double mass)
	Set the mass of this particle.

int	getPdgID ()
	Get the PDG ID code of this particle.

int	getStatus ()
	Get the status of this particle.

double	getMass ()
	Get the mass stored (i.e. More...

double	getPx ()
	Returns the px component of the four vector.

double	getPy ()
	Returns the py component of the four vector.

double	getPz ()
	Returns the pz component of the four vector.

double	getE ()
	Returns the energy component of the four vector.

void	setPx (double px)
	Set the px component of the four vector.

void	setPy (double py)
	Set the px component of the four vector.

void	setPz (double pz)
	Set the pz component of the four vector.

void	setE (double e)
	Set the energy component of the four vector.

int	getBarcode ()
	Get the barcode (position in list) of this particle.

void	setBarcode (int barcode)
	Set barcode (position in list) of this particle.

void	setEvent (PhotosHEPEVTEvent *event)
	Set event of this particle.

int	getFirstMotherIndex ()
	Get index of first mother.

int	getSecondMotherIndex ()
	Get index of second mother.

int	getDaughterRangeStart ()
	Get index of first daughter.

int	getDaughterRangeEnd ()
	Get index of last daughter.

bool	hasDaughters ()
	Return whether the particle has any chidren.

PhotosParticle *	findLastSelf ()
	Traverse the event structure and find the final version of this particle which does not have a particle of it's own type as it's daughter. More...

std::vector< PhotosParticle * >	findProductionMothers ()
	Traverse the event structure and find the first set of mothers which are not of the same type as this particle.

std::vector< PhotosParticle * >	getDecayTree ()
	Return whole decay tree starting from this particle.

void	boostToRestFrame (PhotosParticle *boost)
	Transform this particles four momentum from the lab frome into the rest frame of the paramter PhotosParticle.

void	boostDaughtersToRestFrame (PhotosParticle *boost)
	Transform the four momentum of all the daughters recursively into the frame of the "particle" PhotosParticle.

void	boostFromRestFrame (PhotosParticle *boost)
	Transform this particles four momentum from the rest frame of the paramter PhotosParticle, back into the lab frame.

void	boostDaughtersFromRestFrame (PhotosParticle *boost)
	Transform this particles four momentum from the lab frame to the rest frame of the parameter PhotosParticle.

void	boostAlongZ (double pz, double e)
	Do a Lorenz transformation along the Z axis. More...

void	rotate (int axis, double phi, int second_axis=Z_AXIS)
	rotate this particles 4-momentum by an angle phi from the axisis "axis" towards the axis "second_axis". More...

void	rotateDaughters (int axis, double phi, int second_axis=Z_AXIS)
	rotate 4-momentum of daughters of this particle by an angle phi from the axisis "axis" towards the axis "second_axis".

double	getRotationAngle (int axis, int second_axis=Z_AXIS)
	Returns the angle around the axis "axis" needed to rotate the four momenum is such a way that the non-Z component disappears and Z>0. More...

double	getP ()
	Get scalar momentum.

double	getP (int axis)
	Get momentum component in the direction of "axis" (x,y,z)

void	setP (int axis, double p_component)
	Set momentum component in the direction of "axis" (x,y,z)

virtual double	getVirtuality ()
	Get sqrt(e^2-p^2)

Static Public Attributes
static const int	STABLE = 1
	Stable particle status.

static const int	DECAYED = 2
	Decayed particle status.

static const int	HISTORY = 3
	History particle status.

static const int	X_AXIS = 1
	X Axis.

static const int	Y_AXIS = 2
	Y Axis.

static const int	Z_AXIS = 3
	Z Axis.

static const int	Z0 = 23
	Z0 particle.

static const int	HIGGS = 25
	H particle.

static const int	HIGGS_H = 35
	H0 particle.

static const int	HIGGS_A = 36
	A0 particle.

static const int	HIGGS_PLUS = 37
	H+ particle.

static const int	HIGGS_MINUS = -37
	H- particle.

static const int	W_PLUS = 24
	W+ particle.

static const int	W_MINUS = -24
	W- particle.

static const int	GAMMA = 22
	photon

static const int	TAU_PLUS = -15
	tau+ particle

static const int	TAU_MINUS = 15
	tau- particle

static const int	TAU_NEUTRINO = 16
	tau neutrino particle

static const int	TAU_ANTINEUTRINO = -16
	tau antineutrino particle

static const int	MUON_PLUS = -13
	muon+ particle

static const int	MUON_MINUS = 13
	muon- particle

static const int	MUON_NEUTRINO = 14
	muon neutrino particle

static const int	MUON_ANTINEUTRINO = -14
	muon antineutrino particle

static const int	POSITRON = -11
	e+ particle

static const int	ELECTRON = 11
	e- particle

static const int	ELECTRON_NEUTRINO = 12
	e neutrino particle

static const int	ELECTRON_ANTINEUTRINO = -12
	e antineutrino particle

static const int	UP = 2
	up quark

static const int	ANTIUP = -2
	anti-up quark

static const int	DOWN = 1
	down quark

static const int	ANTIDOWN = -1
	anti-down quark

static const int	OTHER = 0
	All other particle types.

Private Member Functions
void	setDaughterRangeStart (int i)
	Set index of first daughter.

void	setDaughterRangeEnd (int i)
	Set index of last daughter.

Private Attributes
PhotosHEPEVTEvent *	m_event
	Event from which this particle is taken.

int	m_barcode
	Position in the event record.

int	m_first_mother
	Indexes of mothers (-1 if do not have mothers)

int	m_second_mother

int	m_daughter_start
	Range of indexes of daughters (-1 if do not have daughters)

int	m_daughter_end

int	m_pdgid
	PDG ID.

int	m_status
	Status (stable, decayed)

double	m_px
	Momentum.

double	m_py

double	m_pz

double	m_e

double	m_generated_mass
	Mass saved at generation step.

vector< PhotosHEPEVTParticle * >	cache
	List of created particles - if they are not in the event, they will be deleted when no longer needed.

Detailed Description

Definition at line 31 of file PhotosHEPEVTParticle.h.

Member Function Documentation

◆ boostAlongZ()

void boostAlongZ	(	double	boost_pz,
		double	boost_e
	)

inherited

Do a Lorenz transformation along the Z axis.

Boost this vector along the Z direction.

Assume no momentum components in the X or Y directions.

Definition at line 148 of file PhotosParticle.cc.

   {
     // Boost along the Z axis
     double m_tau = sqrt(boost_e * boost_e - boost_pz * boost_pz);
  
     double p = getPz();
     double e = getE();
  
     setPz((boost_e * p + boost_pz * e) / m_tau);
     setE((boost_pz * p + boost_e * e) / m_tau);
   }

◆ createNewParticle()

PhotosHEPEVTParticle * createNewParticle	(	int	pdg_id,
		int	status,
		double	mass,
		double	px,
		double	py,
		double	pz,
		double	e
	)

virtual

Creates a new particle of type PhotosHEPEVTParticle, with the given properties.

The new particle bares no relations to this particle, but ‘this particle’ provides only a way of creating an instance of this derived class. eg. createNewParticle() is used inside filhep_() so that a PhotosHEPEVTParticle can be created without the method having explicit knowledge of the PhotosHEPEVTParticle class

Implements PhotosParticle.

Definition at line 287 of file PhotosHEPEVTParticle.cc.

   {
  
     // New particles created using this method are added to cache
     // They will be deleted when this particle will be deleted
  
     cache.push_back(new PhotosHEPEVTParticle(pdg_id, status, px, py, pz, e, mass, -1, -1, -1, -1));
     return cache.back();
   }

◆ findLastSelf()

PhotosParticle * findLastSelf ( )

inherited

Traverse the event structure and find the final version of this particle which does not have a particle of it's own type as it's daughter.

eg. Generally the final stable copy

Definition at line 15 of file PhotosParticle.cc.

◆ getMass()

double getMass ( void )

virtual

Get the mass stored (i.e.

not calculated from four vector) at generation step

Implements PhotosParticle.

Definition at line 362 of file PhotosHEPEVTParticle.cc.

◆ getRotationAngle()

double getRotationAngle	(	int	axis,
		int	second_axis = `Z_AXIS`
	)

inherited

Returns the angle around the axis "axis" needed to rotate the four momenum is such a way that the non-Z component disappears and Z>0.

Get the angle needed to rotate the 4 momentum vector so that the x (y) component disapears.

This is used to in rotating the coordinate system into a frame with only a Z component before calling boostAlongZ().

(and the Z component is > 0)

if(getP(axis)==0){ if(getPz()>0) return 0; //no rotaion required else return M_PI; }

Definition at line 129 of file PhotosParticle.cc.

◆ rotate()

void rotate	(	int	axis,
		double	phi,
		int	second_axis = `Z_AXIS`
	)

inherited

rotate this particles 4-momentum by an angle phi from the axisis "axis" towards the axis "second_axis".

Rotation around an axis X or Y.

Definition at line 161 of file PhotosParticle.cc.

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

generators/kkmc/photospp/PhotosHEPEVTParticle.h
generators/kkmc/photospp/PhotosHEPEVTParticle.cc

Public Member Functions

Static Public Attributes

Private Member Functions

Private Attributes

Detailed Description

Member Function Documentation

◆ boostAlongZ()

◆ createNewParticle()

◆ findLastSelf()

◆ getMass()

◆ getRotationAngle()

◆ rotate()