#include <VectorWaveFunction.h>

Inheritance diagram for ThePEG::Helicity::VectorWaveFunction:

Public Member Functions
void	transform (const LorentzRotation &r)
	Perform the Lorentz transformation of the wave function.

Standard constructors and destructors.
	VectorWaveFunction (const Lorentz5Momentum &p, tcPDPtr part, const LorentzPolarizationVector &wave, Direction dir=intermediate)
	Constructor, set the momentum and Wavefunction, the direction can also be specified. More...

	VectorWaveFunction (const Lorentz5Momentum &p, tcPDPtr part, const Complex &x, const Complex &y, const Complex &z, const Complex &t)
	Constructor, set the momentum and components of the wavefunction. More...

	VectorWaveFunction (const Lorentz5Momentum &p, tcPDPtr part, unsigned int ihel, Direction dir, VectorPhase phase=default_vector_phase)
	Constructor, set the momentum, helicity and direction, optionally the choice of the phase. More...

	VectorWaveFunction (const Lorentz5Momentum &p, tcPDPtr part, Direction dir)
	Constructor, set the 5-momentum and direction, zero the wavefunction. More...

	VectorWaveFunction ()
	Default constructor.

	VectorWaveFunction (vector< VectorWaveFunction > &wave, tPPtr part, Direction dir, bool time, bool massless, bool=true, VectorPhase phase=default_vector_phase)
	Special for spin correlations. More...


const LorentzPolarizationVector &	wave () const
	Access to the wavefunction and its components. More...

Complex	x () const
	Get x component.

Complex	y () const
	Get y component.

Complex	z () const
	Get z component.

Complex	t () const
	Get t component.

void	reset (unsigned int ihel, VectorPhase phase=default_vector_phase)
	Reset functions. More...

Public Member Functions inherited from ThePEG::Helicity::WaveFunctionBase
	WaveFunctionBase ()
	Constructors. More...

	WaveFunctionBase (const Lorentz5Momentum &p, tcPDPtr pd, Direction dir=intermediate)

Energy	px () const
	Access to the momentum components and mass. More...

Energy	py () const
	Get the y component of the momentum.

Energy	pz () const
	Get the z component of the momentum.

Energy	e () const
	Get the energy.

Energy	mass () const
	Get the mass.

Energy2	m2 () const
	Get off-shell mass squared.

const Lorentz5Momentum &	momentum () const
	Access to the 5-momentum.

long	id () const
	Access to the particle properties. More...

PDT::Spin	iSpin () const
	Get 2s+1 for the particle.

tcPDPtr	particle () const
	Get the particle pointer.

ThePEG::Helicity::Direction	direction () const
	Get the direction of particle.

void	direction (ThePEG::Helicity::Direction in)
	Set the direction of the particle.

Static Public Member Functions
static void	calculateWaveFunctions (vector< LorentzPolarizationVector > &waves, tPPtr particle, Direction, bool massless, VectorPhase phase=default_vector_phase)
	Calculate the wavefunctions.

static void	calculateWaveFunctions (vector< VectorWaveFunction > &waves, tPPtr particle, Direction, bool massless, VectorPhase phase=default_vector_phase)
	Calculate the wavefunctions.

static void	calculateWaveFunctions (vector< VectorWaveFunction > &waves, const Lorentz5Momentum &momentum, tcPDPtr parton, Direction, bool massless, VectorPhase phase=default_vector_phase)
	Calculate the wavefunctions.

static void	calculateWaveFunctions (vector< LorentzPolarizationVector > &waves, RhoDMatrix &rho, tPPtr particle, Direction, bool massless, VectorPhase phase=default_vector_phase)
	Calculate the wavefunctions.

static void	calculateWaveFunctions (vector< VectorWaveFunction > &waves, RhoDMatrix &rho, tPPtr particle, Direction, bool massless, VectorPhase phase=default_vector_phase)
	Calculate the wavefunctions.

static void	constructSpinInfo (const vector< LorentzPolarizationVector > &waves, tPPtr part, Direction dir, bool time, bool massless)
	Construct the SpinInfo object.

static void	constructSpinInfo (const vector< VectorWaveFunction > &waves, tPPtr part, Direction dir, bool time, bool massless)
	Construct the SpinInfo object.

Private Member Functions
void	calculateWaveFunction (unsigned int ihel, VectorPhase phase=default_vector_phase)
	Calculate the wavefunction. More...

Private Attributes
LorentzPolarizationVector	_wf
	Storage of the wavefunction as a Lorentz Vector.

Additional Inherited Members
Protected Member Functions inherited from ThePEG::Helicity::WaveFunctionBase
void	transformMomentum (const LorentzRotation &r)
	Perform the Lorentz transformation of the wave function.

Detailed Description

Author: Peter Richardson

The VectorWaveFunction class is designed to store the wavefunction of a vector in a form suitable for use in helicity amplitude calculations of the matrix element using a similar philosophy to the FORTRAN HELAS code.

In addition to storing the vector using the LorentzPolarizationVector class it inherits from the WaveFunctionBase class to provide storage of the momentum and ParticleData for the vector boson.

This class also contains the code which does the actually calculation of the vector wavefunction.

There are two choices available for the calculation of the wavefunction. These are set using the VectorPhase enumeration which specifies a default choice. The first choice, vector_phase, includes a phase factor $\exp(\pm i \phi)$ for the $\pm$ helicity states while the second, vector_nophase, does not.

N.B. In our convention 0 is the $-1$ helicity state and 1 is the $0$ helicity state 2 is the $+1$ helicity state

See also: WaveFunctionBase; LorentzPolarizationVector

Definition at line 50 of file VectorWaveFunction.h.

Constructor & Destructor Documentation

◆ VectorWaveFunction() [1/5]

ThePEG::Helicity::VectorWaveFunction::VectorWaveFunction	(	const Lorentz5Momentum &	p,
		tcPDPtr	part,
		const LorentzPolarizationVector &	wave,
		Direction	dir = `intermediate`
	)

inline

Constructor, set the momentum and Wavefunction, the direction can also be specified.

Parameters

p	The momentum.
part	The ParticleData pointer
wave	The wavefunction, i.e. the polarization vector.
dir	The direction of the particle.

Definition at line 64 of file VectorWaveFunction.h.

References ThePEG::Helicity::WaveFunctionBase::iSpin().

◆ VectorWaveFunction() [2/5]

ThePEG::Helicity::VectorWaveFunction::VectorWaveFunction	(	const Lorentz5Momentum &	p,
		tcPDPtr	part,
		const Complex &	x,
		const Complex &	y,
		const Complex &	z,
		const Complex &	t
	)

inline

Constructor, set the momentum and components of the wavefunction.

Parameters

p	The momentum.
part	The ParticleData pointer
x	The x component of the polarization vector
y	The y component of the polarization vector
z	The z component of the polarization vector
t	The t component of the polarization vector

Definition at line 81 of file VectorWaveFunction.h.

References ThePEG::Helicity::WaveFunctionBase::iSpin().

◆ VectorWaveFunction() [3/5]

ThePEG::Helicity::VectorWaveFunction::VectorWaveFunction	(	const Lorentz5Momentum &	p,
		tcPDPtr	part,
		unsigned int	ihel,
		Direction	dir,
		VectorPhase	phase = `default_vector_phase`
	)

inline

Constructor, set the momentum, helicity and direction, optionally the choice of the phase.

Parameters

p	The momentum.
part	The ParticleData pointer.
ihel	The helicity (0,1,2 as described above.)
dir	The direction.
phase	The phase choice.

Definition at line 97 of file VectorWaveFunction.h.

References calculateWaveFunction(), and ThePEG::Helicity::WaveFunctionBase::iSpin().

◆ VectorWaveFunction() [4/5]

ThePEG::Helicity::VectorWaveFunction::VectorWaveFunction	(	const Lorentz5Momentum &	p,
		tcPDPtr	part,
		Direction	dir
	)

inline

Constructor, set the 5-momentum and direction, zero the wavefunction.

Parameters

p	The 5-momentum.
part	The ParticleData pointer.
dir	The direction.

Definition at line 112 of file VectorWaveFunction.h.

References ThePEG::Helicity::WaveFunctionBase::iSpin().

◆ VectorWaveFunction() [5/5]

ThePEG::Helicity::VectorWaveFunction::VectorWaveFunction	(	vector< VectorWaveFunction > &	wave,
		tPPtr	part,
		Direction	dir,
		bool	time,
		bool	massless,
		bool	= `true`,
		VectorPhase	phase = `default_vector_phase`
	)

inline

Special for spin correlations.

Todo:: make static?

Definition at line 127 of file VectorWaveFunction.h.

References calculateWaveFunctions(), and constructSpinInfo().

Member Function Documentation

◆ calculateWaveFunction()

void ThePEG::Helicity::VectorWaveFunction::calculateWaveFunction	(	unsigned int	ihel,
		VectorPhase	phase = `default_vector_phase`
	)

private

Calculate the wavefunction.

Parameters

ihel	The helicity (0,1,2 as described above.)
phase	The phase choice.

Referenced by reset(), transform(), and VectorWaveFunction().

◆ reset()

void ThePEG::Helicity::VectorWaveFunction::reset	(	unsigned int	ihel,
		VectorPhase	phase = `default_vector_phase`
	)

inline

Reset functions.

Reset the helicity (recalculation the polarization vector).

Parameters

ihel	The new helicity (0,1,2 as described above.)
phase	The phase choice.

Definition at line 174 of file VectorWaveFunction.h.

References calculateWaveFunction().

◆ wave()

const LorentzPolarizationVector& ThePEG::Helicity::VectorWaveFunction::wave ( ) const

inline

Access to the wavefunction and its components.

Return wavefunction as polarization vector.

Definition at line 143 of file VectorWaveFunction.h.

References _wf.

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

VectorWaveFunction.h

Public Member Functions

Static Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ VectorWaveFunction() [1/5]

◆ VectorWaveFunction() [2/5]

◆ VectorWaveFunction() [3/5]

◆ VectorWaveFunction() [4/5]

◆ VectorWaveFunction() [5/5]

Member Function Documentation

◆ calculateWaveFunction()

◆ reset()

◆ wave()