Module for the DVCS process using the unpublished Guichon-Vanderhaeghen set of formulas. More...

Inheritance diagram for PARTONS::DVCSProcessGV08:

Public Member Functions
	DVCSProcessGV08 (const std::string &className)
	Constructor. More...

virtual	~DVCSProcessGV08 ()
	Default destructor. More...

virtual DVCSProcessGV08 *	clone () const
	Virtual clone function to allow the factory to clone all derived members object stored in the BaseObjectRegistry. More...

Public Member Functions inherited from PARTONS::DVCSProcessModule
virtual	~DVCSProcessModule ()
	Destructor. More...

virtual std::string	toString () const
	Return a pre-formatted characters string for output visualization of class member's values. More...

virtual void	resolveObjectDependencies ()
	Because of the initialization step order of the program, objects are registered in a total random order and some objects depend on others. More...

virtual void	run ()

virtual void	configure (const ElemUtils::Parameters &parameters)
	Provides a generic method to configure all types of modules by passing a Parameters object. More...

virtual void	prepareSubModules (const std::map< std::string, BaseObjectData > &subModulesData)
	Method used in automation to prepare all the modules used by this current module and configure them recursively. More...

virtual DVCSObservableResult	compute (double beamHelicity, double beamCharge, NumA::Vector3D targetPolarization, const DVCSObservableKinematic &kinematic, const List< GPDType > &gpdType=List< GPDType >())

virtual List< GPDType >	getListOfAvailableGPDTypeForComputation () const
	Must be implemented in child class. More...

DVCSObservableResult	compute (double beamHelicity, double beamCharge, NumA::Vector3D targetPolarization, const DVCSObservableKinematic &kinematic, const List< GPDType > &gpdType, VCSSubProcessType::Type processType)
	Computes the differential cross-section. More...

virtual void	resetPreviousKinematic ()
	Reset previous kinematics. More...

bool	isPreviousCCFKinematicDifferent (const DVCSConvolCoeffFunctionKinematic &kinematic) const
	Check if this kinematics is different than the previous one. More...

DVCSScalesModule *	getScaleModule () const
	Get scale module. More...

void	setScaleModule (DVCSScalesModule *pScaleModule)
	Set scale module. More...

DVCSXiConverterModule *	getXiConverterModule () const
	Get xi converter module. More...

void	setXiConverterModule (DVCSXiConverterModule *pXiConverterModule)
	Set xi converted module. More...

DVCSConvolCoeffFunctionModule *	getConvolCoeffFunctionModule () const
	Get CCF module;. More...

void	setConvolCoeffFunctionModule (DVCSConvolCoeffFunctionModule *pConvolCoeffFunctionModule)
	Set CCF module. More...

void	setConvolCoeffFunction (const DVCSConvolCoeffFunctionKinematic &kin, const DVCSConvolCoeffFunctionResult &result)
	Set manually CFFs. More...

Public Member Functions inherited from PARTONS::ProcessModule< DVCSObservableKinematic, DVCSObservableResult >
virtual	~ProcessModule ()
	Destructor. More...

bool	isCCFModuleDependent () const
	Check if this process module depends on a CCF module. More...

void	setIsCCFModuleDependent (bool isCCFModuleDependent)
	Set if this process module depends on a CCF module. More...

Public Member Functions inherited from PARTONS::ModuleObject
	ModuleObject (const std::string &className, ChannelType::Type channelType)
	Constructor. More...

virtual	~ModuleObject ()
	Default destructor. More...

unsigned int	getReferenceModuleId () const
	Get reference module id. More...

void	setReferenceModuleId (unsigned int referenceModuleId)
	Set reference module id. More...

ChannelType::Type	getChannelType () const
	Get channel type. More...

Public Member Functions inherited from PARTONS::BaseObject
	BaseObject (const std::string &className)
	Constructor. More...

virtual	~BaseObject ()
	Default destructor. More...

void	serialize (ElemUtils::Packet &packet) const
	Used to split a complex C++ object into a concatenation of simple types. More...

void	unserialize (ElemUtils::Packet &packet)
	Used to rebuild a complex C++ object from a concatenation of simple type. More...

bool	operator< (const BaseObject &other) const
	Overload of < operator to sort BaseObject object by its indexId value. More...

const std::string &	getClassName () const

unsigned int	getObjectId () const

int	getIndexId () const

void	setIndexId (int indexId)

Static Public Attributes
static const unsigned int	classId
	Unique ID to automatically register the class in the registry. More...

Static Public Attributes inherited from PARTONS::DVCSProcessModule
static const std::string	DVCS_PROCESS_MODULE_CLASS_NAME
	Type of the module in XML automation. More...

Static Public Attributes inherited from PARTONS::ModuleObject
static const std::string	CLASS_NAME = "className"

Protected Member Functions
	DVCSProcessGV08 (const DVCSProcessGV08 &other)
	Copy constructor. More...

virtual void	initModule ()
	Pure virtual function that provides skeleton for module initialization. More...

virtual void	isModuleWellConfigured ()
	Pure virtual function that provides skeleton to check if the module is well initialized and configured. More...

virtual PhysicalType< double >	CrossSectionBH ()
	Bethe-Heitler differential cross section. More...

virtual PhysicalType< double >	CrossSectionVCS ()
	Virtual Compton Scattering differential cross section. More...

virtual PhysicalType< double >	CrossSectionInterf ()
	Interference differential cross section. More...

Protected Member Functions inherited from PARTONS::DVCSProcessModule
	DVCSProcessModule (const std::string &className)
	Default constructor. More...

	DVCSProcessModule (const DVCSProcessModule &other)
	Copy constructor. More...

virtual void	setKinematics (const DVCSObservableKinematic &kinematic)
	Set internal kinematics. More...

virtual void	setExperimentalConditions (double beamHelicity, double beamCharge, NumA::Vector3D targetPolarization)

void	computeConvolCoeffFunction (const DVCSObservableKinematic &kinematic, const List< GPDType > &gpdType=List< GPDType >())
	Compute CCF for a given kinematics. More...

std::complex< double >	getConvolCoeffFunctionValue (GPDType::Type gpdType)
	Gives back a previously computed Compton Form Factor. More...

Protected Member Functions inherited from PARTONS::ProcessModule< DVCSObservableKinematic, DVCSObservableResult >
	ProcessModule (const std::string &className, ChannelType::Type channelType)
	Constructor. More...

	ProcessModule (const ProcessModule &other)
	Copy constructor. More...

Protected Member Functions inherited from PARTONS::ModuleObject
	ModuleObject (const ModuleObject &other)

Protected Member Functions inherited from PARTONS::BaseObject
	BaseObject (const BaseObject &other)
	Copy constructor. More...

void	info (const std::string &functionName, const std::string &message) const
	Print info message into logger. More...

void	debug (const std::string &functionName, const std::string &message) const
	Print debug message into logger. More...

void	warn (const std::string &functionName, const std::string &message) const
	Print warning message into logger. More...

void	errorMissingParameter (const std::string &parameterName) const
	Use in automation process to throw exception when a parameter is missing from the XML scenario file. More...

Private Member Functions
void	MakeExactBHCrossSections ()
	Fills the Jem and SigmaBHPol arrays. More...

void	MakeExactVCSAndInterfCrossSections ()
	Fills the Ur, SigmaVCSPol and SigmaIPol arrays. More...

double	DdirectDcrossed (double phi)
	Denominator of the Bethe Heitler cross section. More...

double	SqrAmplBH (double beamHelicity, double beamCharge, NumA::Vector3D targetPolarization)
	Returns the squared amplitude of Bethe Heitler process. More...

double	SqrAmplVCSAndInterf (double beamHelicity, double beamCharge, NumA::Vector3D targetPolarization)
	Sum of the squared amplitude of VCS process and interference term. More...

double	SqrAmplVCS (double beamHelicity, double beamCharge, NumA::Vector3D targetPolarization)
	Returns the squared amplitude of VCS process. More...

double	SqrAmplInterf (double beamHelicity, double beamCharge, NumA::Vector3D targetPolarization)
	Returns the interference term of the squared amplitude. More...

void	MakeVCSHelicityAmplitudes ()

Private Attributes
double	m_phaseSpace
	Phase-space factor. More...

double	m_phiGV
	Angle between hadronic and leptonic planes (opposite sign of the phi angle of Trento). More...

std::vector< double >	m_powerOfQ

std::vector< double >	m_powerOfProtonMass

double	m_yGV

double	m_xB2
	Square of \( x_B \). More...

double	m_xBMin

double	m_xBMax

bool	Validation

bool	NoPrint

double	m_thetag
	Angle between real and virtual photons. More...

double	m_qpPerp
	Component (here x-axis) of the real photon 3-momentum orthogonal to the virtual photon trajectory (here z-axis) in the hadronic plane (here xz-plane). More...

double	m_Ur [100]
	Coefficients of the expansion of the interference cross section wrt (combinations of) helicity amplitudes. More...

double	m_Omega
	(Function of) the linear polarization rate. More...

double	m_s
	Mandelstam variable (square of the total incoming 4-momentum). More...

double	m_Q
	Photon virtual mass i.e. square root of Q2. More...

NumA::Vector4D	m_qCM
	Virtual photon (propagates along z-axis). 4-vector defined in the CM frame. More...

NumA::Vector4D	m_pCM
	Incoming proton (propagates along z-axis). 4-vector defined in the CM frame. More...

NumA::Vector4D	m_qpCM
	Real photon (defines hadronic plane xz). 4-vector defined in the CM frame. More...

NumA::Vector4D	m_ppCM
	Outgoing proton. 4-vector defined in the CM frame. More...

double	Jem [4][3]
	Helicity amplitudes of the interference process assuming the real photon has helicity +1. More...

double	RMvcs [4][3]
	Real part of the helicity amplitudes of the VCS process assuming the real photon has helicity +1. More...

double	IMvcs [4][3]
	Imaginary part of the helicity amplitudes of the VCS process assuming the real photon has helicity +1. More...

double	SigmaBHPol0 [4]
	Coefficients for the unpolarized cross section of the Bethe-Heitler process. More...

double	SigmaBHPolX [2]
	Coefficients for the x-polarized cross section of the Bethe-Heitler process. More...

double	SigmaBHPolY
	Coefficient for the y-polarized cross section of the Bethe-Heitler process. More...

double	SigmaBHPolZ [2]
	Coefficients for the z-polarized cross section of the Bethe-Heitler process. More...

double	SigmaVCSPol0 [5]
	Coefficients for the unpolarized cross section of the Virtual Compton Scattering process. More...

double	SigmaVCSPolX [4]
	Coefficients for the x-polarized cross section of the Virtual Compton Scattering process. More...

double	SigmaVCSPolY [5]
	Coefficients for the y-polarized cross section of the Virtual Compton Scattering process. More...

double	SigmaVCSPolZ [4]
	Coefficients for the z-polarized cross section of the Virtual Compton Scattering process. More...

double	SigmaIPol0 [8]
	Coefficients for the unpolarized cross section (interference term). More...

double	SigmaIPolX [8]
	Coefficients for the x-polarized cross section (interference term). More...

double	SigmaIPolY [8]
	Coefficients for the x-polarized cross section (interference term). More...

double	SigmaIPolZ [8]
	Coefficients for the x-polarized cross section (interference term). More...

Additional Inherited Members
Protected Attributes inherited from PARTONS::DVCSProcessModule
double	m_xB
	Bjorken variable. More...

double	m_t
	Mandelstam variable (square of the 4-momentum transferm in GeV2). More...

double	m_Q2
	Virtuality of the incoming photon (in GeV2). More...

double	m_E
	Beam energy in target rest frame (in GeV). More...

double	m_phi
	Angle between leptonic and hadronic plane (in radians, Trento convention). More...

double	m_beamHelicity
	Beam helicity. More...

double	m_beamCharge
	Beam charge. More...

NumA::Vector3D	m_targetPolarization
	Target polarization. More...

double	m_tmin
	Minimal value of t. More...

double	m_tmax
	Maximal value of t. More...

double	m_xBmin
	Minimal value of xB. More...

double	m_y
	Lepton energy fraction. More...

double	m_epsilon
	\( \epsilon = \frac{2 x_B M}{Q} \). More...

DVCSScalesModule *	m_pScaleModule
	Pointer to the underlying scale module. More...

DVCSXiConverterModule *	m_pXiConverterModule
	Pointer to the underlying xi converter module. More...

DVCSConvolCoeffFunctionModule *	m_pConvolCoeffFunctionModule
	Pointer to the underlying CCF module. More...

DVCSConvolCoeffFunctionResult	m_dvcsConvolCoeffFunctionResult
	Stored Compton Form Factor result. More...

DVCSConvolCoeffFunctionKinematic	m_lastCCFKinematics
	Last Compton Form Factor kinematics. More...

Protected Attributes inherited from PARTONS::ProcessModule< DVCSObservableKinematic, DVCSObservableResult >
bool	m_isCCFModuleDependent
	Boolean (true if this Process module depends on a CCF module). More...

Protected Attributes inherited from PARTONS::ModuleObject
ModuleObjectFactory *	m_pModuleObjectFactory
	Pointer tp module object factory. More...

Detailed Description

Module for the DVCS process using the unpublished Guichon-Vanderhaeghen set of formulas.

Constructor & Destructor Documentation

◆ DVCSProcessGV08() [1/2]

PARTONS::DVCSProcessGV08::DVCSProcessGV08 ( const std::string & className )

Constructor.

See BaseObject::BaseObject and ModuleObject::ModuleObject for more details.

Parameters

className name of child class.

◆ ~DVCSProcessGV08()

PARTONS::DVCSProcessGV08::~DVCSProcessGV08 ( )

virtual

Default destructor.

◆ DVCSProcessGV08() [2/2]

PARTONS::DVCSProcessGV08::DVCSProcessGV08 ( const DVCSProcessGV08 & other )

protected

Copy constructor.

Use by the factory

Parameters

other

Member Function Documentation

◆ clone()

DVCSProcessGV08 * PARTONS::DVCSProcessGV08::clone ( ) const

virtual

Virtual clone function to allow the factory to clone all derived members object stored in the BaseObjectRegistry.

Returns

Implements PARTONS::DVCSProcessModule.

◆ CrossSectionBH()

PhysicalType< double > PARTONS::DVCSProcessGV08::CrossSectionBH ( )

protectedvirtual

Bethe-Heitler differential cross section.

Reimplemented from PARTONS::DVCSProcessModule.

◆ CrossSectionInterf()

PhysicalType< double > PARTONS::DVCSProcessGV08::CrossSectionInterf ( )

protectedvirtual

Interference differential cross section.

Reimplemented from PARTONS::DVCSProcessModule.

◆ CrossSectionVCS()

PhysicalType< double > PARTONS::DVCSProcessGV08::CrossSectionVCS ( )

protectedvirtual

Virtual Compton Scattering differential cross section.

Reimplemented from PARTONS::DVCSProcessModule.

◆ DdirectDcrossed()

double PARTONS::DVCSProcessGV08::DdirectDcrossed ( double phi )

private

Denominator of the Bethe Heitler cross section.

◆ initModule()

void PARTONS::DVCSProcessGV08::initModule ( )

protectedvirtual

Pure virtual function that provides skeleton for module initialization.

Children must define and override it.

Reimplemented from PARTONS::DVCSProcessModule.

◆ isModuleWellConfigured()

void PARTONS::DVCSProcessGV08::isModuleWellConfigured ( )

protectedvirtual

Pure virtual function that provides skeleton to check if the module is well initialized and configured.

Children must define and override it.

Reimplemented from PARTONS::DVCSProcessModule.

◆ MakeExactBHCrossSections()

void PARTONS::DVCSProcessGV08::MakeExactBHCrossSections ( )

private

Fills the Jem and SigmaBHPol arrays.

◆ MakeExactVCSAndInterfCrossSections()

void PARTONS::DVCSProcessGV08::MakeExactVCSAndInterfCrossSections ( )

private

Fills the Ur, SigmaVCSPol and SigmaIPol arrays.

◆ MakeVCSHelicityAmplitudes()

void PARTONS::DVCSProcessGV08::MakeVCSHelicityAmplitudes ( )

private

◆ SqrAmplBH()

double PARTONS::DVCSProcessGV08::SqrAmplBH	(	double	beamHelicity,
		double	beamCharge,
		NumA::Vector3D	targetPolarization
	)

private

Returns the squared amplitude of Bethe Heitler process.

◆ SqrAmplInterf()

double PARTONS::DVCSProcessGV08::SqrAmplInterf	(	double	beamHelicity,
		double	beamCharge,
		NumA::Vector3D	targetPolarization
	)

private

Returns the interference term of the squared amplitude.

◆ SqrAmplVCS()

double PARTONS::DVCSProcessGV08::SqrAmplVCS	(	double	beamHelicity,
		double	beamCharge,
		NumA::Vector3D	targetPolarization
	)

private

Returns the squared amplitude of VCS process.

◆ SqrAmplVCSAndInterf()

double PARTONS::DVCSProcessGV08::SqrAmplVCSAndInterf	(	double	beamHelicity,
		double	beamCharge,
		NumA::Vector3D	targetPolarization
	)

private

Sum of the squared amplitude of VCS process and interference term.

Member Data Documentation

◆ classId

const unsigned int PARTONS::DVCSProcessGV08::classId

static

Initial value:

=
        BaseObjectRegistry::getInstance()->registerBaseObject(
                new DVCSProcessGV08("DVCSProcessGV08"))

Unique ID to automatically register the class in the registry.

◆ IMvcs

double PARTONS::DVCSProcessGV08::IMvcs[4][3]

private

Imaginary part of the helicity amplitudes of the VCS process assuming the real photon has helicity +1.

◆ Jem

double PARTONS::DVCSProcessGV08::Jem[4][3]

private

Helicity amplitudes of the interference process assuming the real photon has helicity +1.

◆ m_Omega

double PARTONS::DVCSProcessGV08::m_Omega

private

(Function of) the linear polarization rate.

◆ m_pCM

NumA::Vector4D PARTONS::DVCSProcessGV08::m_pCM

private

Incoming proton (propagates along z-axis). 4-vector defined in the CM frame.

◆ m_phaseSpace

double PARTONS::DVCSProcessGV08::m_phaseSpace

private

Phase-space factor.

◆ m_phiGV

double PARTONS::DVCSProcessGV08::m_phiGV

private

Angle between hadronic and leptonic planes (opposite sign of the phi angle of Trento).

◆ m_powerOfProtonMass

std::vector<double> PARTONS::DVCSProcessGV08::m_powerOfProtonMass

private

◆ m_powerOfQ

std::vector<double> PARTONS::DVCSProcessGV08::m_powerOfQ

private

◆ m_ppCM

NumA::Vector4D PARTONS::DVCSProcessGV08::m_ppCM

private

Outgoing proton. 4-vector defined in the CM frame.

◆ m_Q

double PARTONS::DVCSProcessGV08::m_Q

private

Photon virtual mass i.e. square root of Q2.

◆ m_qCM

NumA::Vector4D PARTONS::DVCSProcessGV08::m_qCM

private

Virtual photon (propagates along z-axis). 4-vector defined in the CM frame.

◆ m_qpCM

NumA::Vector4D PARTONS::DVCSProcessGV08::m_qpCM

private

Real photon (defines hadronic plane xz). 4-vector defined in the CM frame.

◆ m_qpPerp

double PARTONS::DVCSProcessGV08::m_qpPerp

private

Component (here x-axis) of the real photon 3-momentum orthogonal to the virtual photon trajectory (here z-axis) in the hadronic plane (here xz-plane).

◆ m_s

double PARTONS::DVCSProcessGV08::m_s

private

Mandelstam variable (square of the total incoming 4-momentum).

◆ m_thetag

double PARTONS::DVCSProcessGV08::m_thetag

private

Angle between real and virtual photons.

◆ m_Ur

double PARTONS::DVCSProcessGV08::m_Ur[100]

private

Coefficients of the expansion of the interference cross section wrt (combinations of) helicity amplitudes.

◆ m_xB2

double PARTONS::DVCSProcessGV08::m_xB2

private

Square of \( x_B \).

◆ m_xBMax

double PARTONS::DVCSProcessGV08::m_xBMax

private

◆ m_xBMin

double PARTONS::DVCSProcessGV08::m_xBMin

private

◆ m_yGV

double PARTONS::DVCSProcessGV08::m_yGV

private

◆ NoPrint

bool PARTONS::DVCSProcessGV08::NoPrint

private

◆ RMvcs

double PARTONS::DVCSProcessGV08::RMvcs[4][3]

private

Real part of the helicity amplitudes of the VCS process assuming the real photon has helicity +1.

◆ SigmaBHPol0

double PARTONS::DVCSProcessGV08::SigmaBHPol0[4]

private

Coefficients for the unpolarized cross section of the Bethe-Heitler process.

◆ SigmaBHPolX

double PARTONS::DVCSProcessGV08::SigmaBHPolX[2]

private

Coefficients for the x-polarized cross section of the Bethe-Heitler process.

◆ SigmaBHPolY

double PARTONS::DVCSProcessGV08::SigmaBHPolY

private

Coefficient for the y-polarized cross section of the Bethe-Heitler process.

◆ SigmaBHPolZ

double PARTONS::DVCSProcessGV08::SigmaBHPolZ[2]

private

Coefficients for the z-polarized cross section of the Bethe-Heitler process.

◆ SigmaIPol0

double PARTONS::DVCSProcessGV08::SigmaIPol0[8]

private

Coefficients for the unpolarized cross section (interference term).

◆ SigmaIPolX

double PARTONS::DVCSProcessGV08::SigmaIPolX[8]

private

Coefficients for the x-polarized cross section (interference term).

◆ SigmaIPolY

double PARTONS::DVCSProcessGV08::SigmaIPolY[8]

private

Coefficients for the x-polarized cross section (interference term).

◆ SigmaIPolZ

double PARTONS::DVCSProcessGV08::SigmaIPolZ[8]

private

Coefficients for the x-polarized cross section (interference term).

◆ SigmaVCSPol0

double PARTONS::DVCSProcessGV08::SigmaVCSPol0[5]

private

Coefficients for the unpolarized cross section of the Virtual Compton Scattering process.

◆ SigmaVCSPolX

double PARTONS::DVCSProcessGV08::SigmaVCSPolX[4]

private

Coefficients for the x-polarized cross section of the Virtual Compton Scattering process.

◆ SigmaVCSPolY

double PARTONS::DVCSProcessGV08::SigmaVCSPolY[5]

private

Coefficients for the y-polarized cross section of the Virtual Compton Scattering process.

◆ SigmaVCSPolZ

double PARTONS::DVCSProcessGV08::SigmaVCSPolZ[4]

private

Coefficients for the z-polarized cross section of the Virtual Compton Scattering process.

◆ Validation

bool PARTONS::DVCSProcessGV08::Validation

private

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

include/partons/modules/process/DVCS/DVCSProcessGV08.h
src/partons/modules/process/DVCS/DVCSProcessGV08.cpp

Public Member Functions

Static Public Attributes

Protected Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ DVCSProcessGV08() [1/2]

◆ ~DVCSProcessGV08()

◆ DVCSProcessGV08() [2/2]

Member Function Documentation

◆ clone()

◆ CrossSectionBH()

◆ CrossSectionInterf()

◆ CrossSectionVCS()

◆ DdirectDcrossed()

◆ initModule()

◆ isModuleWellConfigured()

◆ MakeExactBHCrossSections()

◆ MakeExactVCSAndInterfCrossSections()

◆ MakeVCSHelicityAmplitudes()

◆ SqrAmplBH()

◆ SqrAmplInterf()

◆ SqrAmplVCS()

◆ SqrAmplVCSAndInterf()

Member Data Documentation

◆ classId

◆ IMvcs

◆ Jem

◆ m_Omega

◆ m_pCM

◆ m_phaseSpace

◆ m_phiGV

◆ m_powerOfProtonMass

◆ m_powerOfQ

◆ m_ppCM

◆ m_Q

◆ m_qCM

◆ m_qpCM

◆ m_qpPerp

◆ m_s

◆ m_thetag

◆ m_Ur

◆ m_xB2

◆ m_xBMax

◆ m_xBMin

◆ m_yGV

◆ NoPrint

◆ RMvcs

◆ SigmaBHPol0

◆ SigmaBHPolX

◆ SigmaBHPolY

◆ SigmaBHPolZ

◆ SigmaIPol0

◆ SigmaIPolX

◆ SigmaIPolY

◆ SigmaIPolZ

◆ SigmaVCSPol0

◆ SigmaVCSPolX

◆ SigmaVCSPolY

◆ SigmaVCSPolZ

◆ Validation