The HwMEBase class serves a number of purposes. More...

#include <HwMEBase.h>

Inheritance diagram for Herwig::HwMEBase:

[legend]

Public Member Functions
	HwMEBase ()
	Default constructor.

Public Member Functions inherited from ThePEG::MEBase
virtual unsigned int	orderInAlphaS () const=0

virtual unsigned int	orderInAlphaEW () const=0

virtual double	me2 () const=0

virtual Energy2	scale () const=0

virtual double	alphaS () const

virtual double	alphaEM () const

void	setKinematics (tPPair in, const PVector &out)

virtual void	setKinematics ()

virtual void	constructVertex (tSubProPtr sub)

virtual void	constructVertex (tSubProPtr sub, const ColourLines *cl)

virtual int	nDim () const

virtual bool	generateKinematics (const double *r)=0

virtual bool	wantCMS () const

virtual bool	headCuts () const

virtual bool	ignoreCuts () const

virtual bool	apply () const

virtual CrossSection	dSigHatDR () const=0

virtual map< string, double >	generateOptionalWeights ()

virtual bool	haveX1X2 () const

virtual bool	havePDFWeight1 () const

virtual bool	havePDFWeight2 () const

virtual bool	keepRandomNumbers () const

virtual void	generateSubCollision (SubProcess &)

virtual void	clearKinematics ()

virtual void	getDiagrams () const=0

virtual bool	noMirror () const

const DiagramVector &	diagrams () const

virtual Selector< const ColourLines * >	colourGeometries (tcDiagPtr diag) const=0

virtual const ColourLines &	selectColourGeometry (tcDiagPtr diag) const

virtual Selector< DiagramIndex >	diagrams (const DiagramVector &) const

virtual DiagramIndex	diagram (const DiagramVector &) const

bool	reweighted () const

double	reWeight () const

double	preWeight () const

void	addReweighter (tReweightPtr rw)

void	addPreweighter (tReweightPtr rw)

Ptr< Amplitude >::pointer	amplitude () const

void	amplitude (Ptr< Amplitude >::pointer amp)

Energy2	sHat () const

double	preweight () const

virtual void	flushCaches ()

virtual StdXCombPtr	makeXComb (Energy newMaxEnergy, const cPDPair &inc, tEHPtr newEventHandler, tSubHdlPtr newSubProcessHandler, tPExtrPtr newExtractor, tCascHdlPtr newCKKW, const PBPair &newPartonBins, tCutsPtr newCuts, const DiagramVector &newDiagrams, bool mir, const PartonPairVec &allPBins, tStdXCombPtr newHead=tStdXCombPtr(), tMEPtr newME=tMEPtr())

virtual StdXCombPtr	makeXComb (tStdXCombPtr newHead, const PBPair &newPartonBins, const DiagramVector &newDiagrams, tMEPtr newME=tMEPtr())

virtual void	fillProjectors ()

virtual void	setXComb (tStdXCombPtr)

const DVector &	meInfo () const

void	meInfo (const DVector &info) const

virtual int	maxMultCKKW () const

virtual int	minMultCKKW () const

virtual void	maxMultCKKW (int mult)

virtual void	minMultCKKW (int mult)

virtual void	setVetoScales (tSubProPtr) const

virtual unsigned int	orderInAlphaS () const=0

virtual unsigned int	orderInAlphaEW () const=0

virtual double	me2 () const=0

virtual Energy2	scale () const=0

virtual double	alphaS () const

virtual double	alphaEM () const

void	setKinematics (tPPair in, const PVector &out)

virtual void	setKinematics ()

virtual void	constructVertex (tSubProPtr sub)

virtual void	constructVertex (tSubProPtr sub, const ColourLines *cl)

virtual int	nDim () const

virtual bool	generateKinematics (const double *r)=0

virtual bool	wantCMS () const

virtual bool	headCuts () const

virtual bool	ignoreCuts () const

virtual bool	apply () const

virtual CrossSection	dSigHatDR () const=0

virtual map< string, double >	generateOptionalWeights ()

virtual bool	haveX1X2 () const

virtual bool	havePDFWeight1 () const

virtual bool	havePDFWeight2 () const

virtual bool	keepRandomNumbers () const

virtual void	generateSubCollision (SubProcess &)

virtual void	clearKinematics ()

virtual void	getDiagrams () const=0

virtual bool	noMirror () const

const DiagramVector &	diagrams () const

virtual Selector< const ColourLines * >	colourGeometries (tcDiagPtr diag) const=0

virtual const ColourLines &	selectColourGeometry (tcDiagPtr diag) const

virtual Selector< DiagramIndex >	diagrams (const DiagramVector &) const

virtual DiagramIndex	diagram (const DiagramVector &) const

bool	reweighted () const

double	reWeight () const

double	preWeight () const

void	addReweighter (tReweightPtr rw)

void	addPreweighter (tReweightPtr rw)

Ptr< Amplitude >::pointer	amplitude () const

void	amplitude (Ptr< Amplitude >::pointer amp)

Energy2	sHat () const

double	preweight () const

virtual void	flushCaches ()

virtual StdXCombPtr	makeXComb (Energy newMaxEnergy, const cPDPair &inc, tEHPtr newEventHandler, tSubHdlPtr newSubProcessHandler, tPExtrPtr newExtractor, tCascHdlPtr newCKKW, const PBPair &newPartonBins, tCutsPtr newCuts, const DiagramVector &newDiagrams, bool mir, const PartonPairVec &allPBins, tStdXCombPtr newHead=tStdXCombPtr(), tMEPtr newME=tMEPtr())

virtual StdXCombPtr	makeXComb (tStdXCombPtr newHead, const PBPair &newPartonBins, const DiagramVector &newDiagrams, tMEPtr newME=tMEPtr())

virtual void	fillProjectors ()

virtual void	setXComb (tStdXCombPtr)

const DVector &	meInfo () const

void	meInfo (const DVector &info) const

virtual int	maxMultCKKW () const

virtual int	minMultCKKW () const

virtual void	maxMultCKKW (int mult)

virtual void	minMultCKKW (int mult)

virtual void	setVetoScales (tSubProPtr) const

void	persistentOutput (PersistentOStream &os) const

void	persistentInput (PersistentIStream &is, int version)

Public Member Functions inherited from ThePEG::HandlerBaseT< UseRandom >
double	rnd () const

double	rnd (double xu) const

double	rnd (double xl, double xu) const

bool	rndbool () const

bool	rndbool (double p) const

bool	rndbool (double p1, double p2) const

int	rndsign (double p1, double p2, double p3) const

int	rnd2 (double p0, double p1) const

int	rnd3 (double p0, double p1, double p2) const

int	rnd4 (double p0, double p1, double p2, double p3) const

long	irnd (long xu=2) const

long	irnd (long xl, long xu) const

const StandardModelBase &	SM () const

tSMPtr	standardModel () const

Public Member Functions inherited from ThePEG::Interfaced
virtual bool	defaultInit ()

PPtr	getParticle (PID) const

PDPtr	getParticleData (PID) const

bool	used () const

void	useMe () const

tEGPtr	generator () const

void	persistentOutput (PersistentOStream &os) const

void	persistentInput (PersistentIStream &is, int version)

PPtr	getParticle (PID) const

PDPtr	getParticleData (PID) const

bool	used () const

void	useMe () const

tEGPtr	generator () const

Public Member Functions inherited from ThePEG::InterfacedBase
string	fullName () const

string	name () const

string	path () const

string	comment () const

void	setup (istream &is)

void	update ()

void	init ()

virtual bool	preInitialize () const

void	initrun ()

void	finish ()

void	touch ()

void	reset ()

void	clear ()

InitState	state () const

bool	locked () const

bool	touched () const

virtual IBPtr	fullclone () const

void	persistentOutput (PersistentOStream &os) const

void	persistentInput (PersistentIStream &is, int version)

virtual void	debugme () const

void	update ()

void	init ()

virtual bool	preInitialize () const

void	initrun ()

void	finish ()

void	touch ()

void	reset ()

void	clear ()

InitState	state () const

bool	locked () const

bool	touched () const

virtual IBPtr	fullclone () const

Public Member Functions inherited from ThePEG::Base
void	debug () const

virtual void	debugme () const

Public Member Functions inherited from ThePEG::Pointer::ReferenceCounted
CounterType	referenceCount () const

Public Member Functions inherited from ThePEG::Named
	Named (const string &newName=string())

	Named (const Named &)=default

const string &	name () const

bool	operator== (const Named &other) const

bool	operator< (const Named &other) const

Public Member Functions inherited from ThePEG::LastXCombInfo< StandardXComb >
const XC &	lastXComb () const

const XC &	lastXComb () const

tXCPtr	lastXCombPtr () const

tXCPtr	lastXCombPtr () const

const XC &	lastHeadXComb () const

const XC &	lastHeadXComb () const

tXCPtr	lastHeadXCombPtr () const

tXCPtr	lastHeadXCombPtr () const

const EventHandler &	lastEventHandler () const

const EventHandler &	lastEventHandler () const

tPExtrPtr	lastExtractor () const

tPExtrPtr	lastExtractor () const

PDFT	pdf (tcPPtr parton) const

PDFT	pdf (tcPPtr parton) const

const Cuts &	lastCuts () const

const Cuts &	lastCuts () const

tCutsPtr	lastCutsPtr () const

tCutsPtr	lastCutsPtr () const

const PPair &	lastParticles () const

const PPair &	lastParticles () const

Energy2	lastS () const

Energy2	lastS () const

const PPair &	lastPartons () const

const PPair &	lastPartons () const

Energy2	lastSHat () const

Energy2	lastSHat () const

double	lastTau () const

double	lastTau () const

double	lastY () const

double	lastY () const

double	lastP1 () const

double	lastP1 () const

double	lastP2 () const

double	lastP2 () const

double	lastL1 () const

double	lastL1 () const

double	lastL2 () const

double	lastL2 () const

double	lastX1 () const

double	lastX1 () const

double	lastX2 () const

double	lastX2 () const

double	lastE1 () const

double	lastE1 () const

double	lastE2 () const

double	lastE2 () const

double	lastFL1L2 () const

double	lastFL1L2 () const

Energy2	lastScale () const

double	lastAlphaS () const

double	lastAlphaEM () const

const vector< Lorentz5Momentum > &	meMomenta () const

double	lastME2 () const

double	lastPreweight () const

double	jacobian () const

CrossSection	lastMECrossSection () const

double	lastMEPDFWeight () const

double	lastMECouplings () const

tSubProPtr	subProcess () const

const cPDVector &	mePartonData () const

Protected Member Functions
Access cached values in of the last set phase space point.
Energy2	tHat () const
	Return the \(\hat{t}\) of the last set phase space point.

Energy2	uHat () const
	Return the \(\hat{u}\) of the last set phase space point.

double	phi () const
	Return the azimuth angle of the last set phase space point.

Protected Member Functions inherited from ThePEG::MEBase
virtual void	doinit ()

virtual void	doinitrun ()

void	add (DiagPtr dp) const

vector< Lorentz5Momentum > &	meMomenta ()

void	lastME2 (double v) const

void	lastPreweight (double w) const

void	lastMECrossSection (CrossSection v) const

void	lastMEPDFWeight (double v) const

void	lastMECouplings (double v) const

void	jacobian (double j)

void	use (tcMEPtr other)

void	useDiagrams (tcMEPtr other) const

Protected Member Functions inherited from ThePEG::Interfaced
void	reporeg (IBPtr object, string name) const

bool	setDefaultReference (PtrT &ptr, string classname, string objectname)

	Interfaced (const string &newName)

	Interfaced (const Interfaced &i)

void	setGenerator (tEGPtr generator)

Protected Member Functions inherited from ThePEG::InterfacedBase
virtual void	readSetup (istream &is)

virtual void	doupdate ()

virtual void	doinit ()

virtual void	doinitrun ()

virtual void	dofinish ()

virtual IVector	getReferences ()

virtual void	rebind (const TranslationMap &)

virtual IBPtr	clone () const=0

	InterfacedBase (string newName)

	InterfacedBase (const InterfacedBase &i)

virtual void	readSetup (istream &is)

virtual void	doupdate ()

virtual void	doinit ()

virtual void	doinitrun ()

virtual void	dofinish ()

virtual IVector	getReferences ()

virtual void	rebind (const TranslationMap &)

Protected Member Functions inherited from ThePEG::Pointer::ReferenceCounted
	ReferenceCounted (const ReferenceCounted &)

ReferenceCounted &	operator= (const ReferenceCounted &)

Protected Member Functions inherited from ThePEG::Named
const Named &	operator= (const Named &other)

const string &	name (const string &newName)

Virtual functions required by the MEBase class.
enum	POWHEGType { No , ISR , FSR , Both }
	Virtual members to be overridden by inheriting classes which implement hard corrections. More...

virtual int	nDim () const
	The number of internal degreed of freedom used in the matrix element.

virtual bool	generateKinematics (const double *r)
	Generate internal degrees of freedom given 'nDim()' uniform random numbers in the interval ]0,1[.

virtual CrossSection	dSigHatDR () const
	Return the matrix element for the kinematical configuation previously provided by the last call to setKinematics().

virtual void	setKinematics ()
	Set the typed and momenta of the incoming and outgoing partons to be used in subsequent calls to me() and colourGeometries() according to the associated XComb object.

virtual POWHEGType	hasPOWHEGCorrection ()
	Has a POWHEG style correction.

virtual bool	hasMECorrection ()
	Has an old fashioned ME correction.

virtual void	initializeMECorrection (RealEmissionProcessPtr, double &, double &)
	Initialize the ME correction.

virtual RealEmissionProcessPtr	applyHardMatrixElementCorrection (RealEmissionProcessPtr)
	Apply the hard matrix element correction to a given hard process or decay.

virtual bool	softMatrixElementVeto (PPtr parent, PPtr progenitor, const bool &fs, const Energy &highestpT, const vector< tcPDPtr > &ids, const double &z, const Energy &scale, const Energy &pT)
	Apply the soft matrix element correction.

virtual RealEmissionProcessPtr	generateHardest (RealEmissionProcessPtr, ShowerInteraction)
	Apply the POWHEG style correction.

Set the cached values in of the last set phase space point.
vector< unsigned int >	massOption_
	Option for the treatment of the particle masses.

Energy2	lastTHat_
	The \(\hat{t}\) of the last set phase space point.

Energy2	lastUHat_
	The \(\hat{u}\) of the last set phase space point.

double	lastPhi_
	The azimuth angle of the last set phase space point.

unsigned int	rescaleOption_
	Produced to produce rescaled momenta.

vector< Lorentz5Momentum >	rescaledMomenta_
	Rescaled momenta for use in ME calculations.

void	tHat (Energy2 e2)
	Set the \(\hat{t}\) of the last set phase space point.

void	uHat (Energy2 e2)
	Set the \(\hat{u}\) of the last set phase space point.

void	phi (double phi)
	Set the azimuth angle of the last set phase space point.

void	massOption (vector< unsigned int > iopt)
	Set the treatment of the outgoing masses.

void	rescalingOption (unsigned int iopt)
	Rescaled momenta for the helicity ME.

bool	rescaleMomenta (const vector< Lorentz5Momentum > &, const cPDVector &)
	rescale the momenta for the computation of the helicity matrix element

const vector< Lorentz5Momentum > &	rescaledMomenta () const
	Access to the rescaled momenta.

bool	generateMasses (vector< Energy > &masses, double &mjac, const double *r)
	Generate the masses of the particles.

virtual double	getCosTheta (double cthmin, double cthmax, const double r)
	Used internally by generateKinematics, after calculating the limits on cos(theta).

HwMEBase &	operator= (const HwMEBase &)=delete
	The assignment operator is private and must never be called.

Functions used by the persistent I/O system.
void	persistentOutput (PersistentOStream &os) const
	Function used to write out object persistently.

void	persistentInput (PersistentIStream &is, int version)
	Function used to read in object persistently.

static void	Init ()
	The standard Init function used to initialize the interfaces.

Additional Inherited Members
Public Types inherited from ThePEG::MEBase
typedef vector< DiagPtr >	DiagramVector

typedef DiagramVector::size_type	DiagramIndex

typedef vector< ReweightPtr >	ReweightVector

Public Types inherited from ThePEG::InterfacedBase
enum	InitState

Public Types inherited from ThePEG::Pointer::ReferenceCounted
typedef unsigned int	CounterType

Public Types inherited from ThePEG::LastXCombInfo< StandardXComb >
typedef ThePEG::Ptr< XC >::pointer	XCPtr

typedef ThePEG::Ptr< XC >::const_pointer	cXCPtr

typedef ThePEG::Ptr< XC >::transient_pointer	tXCPtr

typedef ThePEG::Ptr< XC >::transient_const_pointer	tcXCPtr

Static Public Member Functions inherited from ThePEG::MEBase
static void	Init ()

Static Public Member Functions inherited from ThePEG::HandlerBase
static void	Init ()

Static Public Member Functions inherited from ThePEG::Interfaced
static void	Init ()

Static Public Member Functions inherited from ThePEG::InterfacedBase
static void	Init ()

Static Public Member Functions inherited from ThePEG::Base
static void	Init ()

Public Attributes inherited from ThePEG::InterfacedBase
	initializing

	uninitialized

	initialized

	runready

Public Attributes inherited from ThePEG::Pointer::ReferenceCounted
const unsigned long	uniqueId

Static Protected Member Functions inherited from ThePEG::Interfaced
static void	registerRepository (IBPtr)

static void	registerRepository (IBPtr, string newName)

Protected Attributes inherited from ThePEG::LastXCombInfo< StandardXComb >
XCPtr	theLastXComb

Detailed Description

The HwMEBase class serves a number of purposes.

it implements the phase space for \(2\to2\) scattering processes
it provides virtual members for the implementation of hard radiation
it gives us greater control over the masses of the outgoing particles so that they can be
- set massless where required by gauge invariance
- have their off-shell masses generated using the sophisticated approaches available in Herwig.

See also: The interfaces defined for HwMEBase.

Definition at line 35 of file HwMEBase.h.

Member Enumeration Documentation

◆ POWHEGType

enum Herwig::HwMEBase::POWHEGType

Virtual members to be overridden by inheriting classes which implement hard corrections.

Type of POWHEG correction

Definition at line 87 of file HwMEBase.h.

Constructor & Destructor Documentation

◆ HwMEBase()

Herwig::HwMEBase::HwMEBase ( )

inline

Default constructor.

Definition at line 42 of file HwMEBase.h.

Member Function Documentation

◆ applyHardMatrixElementCorrection()

virtual RealEmissionProcessPtr Herwig::HwMEBase::applyHardMatrixElementCorrection ( RealEmissionProcessPtr )

virtual

Apply the hard matrix element correction to a given hard process or decay.

Reimplemented in Herwig::DISBase, Herwig::DrellYanBase, Herwig::MEPP2Higgs, Herwig::MEPP2HiggsVBF, and Herwig::MEee2gZ2qq.

◆ dSigHatDR()

virtual CrossSection Herwig::HwMEBase::dSigHatDR ( ) const

virtual

Return the matrix element for the kinematical configuation previously provided by the last call to setKinematics().

Uses me().

Implements ThePEG::MEBase.

Reimplemented in Herwig::MEHiggsPair, Herwig::MEHiggsPairJet, Herwig::MEHiggsPairOL, Herwig::DISBase, Herwig::GeneralQQHiggs, Herwig::MEDiffraction, Herwig::MEPP2Higgs, Herwig::MEPP2QQHiggs, Herwig::MEPP2WJet, Herwig::MEPP2ZJet, Herwig::MEfftoffH, Herwig::MEfftoVH, Herwig::MEMinBias, Herwig::MEPP2GammaGammaPowheg, Herwig::MEPP2HiggsVBFPowheg, Herwig::MEPP2WHPowheg, Herwig::MEPP2ZHPowheg, Herwig::MEqq2gZ2ffPowheg, and Herwig::MEqq2W2ffPowheg.

◆ generateHardest()

virtual RealEmissionProcessPtr Herwig::HwMEBase::generateHardest	(	RealEmissionProcessPtr	,
		ShowerInteraction
	)

virtual

Apply the POWHEG style correction.

Reimplemented in Herwig::MEPP2VVPowheg, Herwig::DISBase, Herwig::DrellYanBase, Herwig::MEPP2Higgs, Herwig::MEPP2HiggsVBF, Herwig::MEee2ff, Herwig::MEee2gZ2ll, Herwig::MEee2gZ2qq, and Herwig::MEPP2GammaGammaPowheg.

◆ generateKinematics()

virtual bool Herwig::HwMEBase::generateKinematics ( const double * r )

virtual

Generate internal degrees of freedom given 'nDim()' uniform random numbers in the interval ]0,1[.

To help the phase space generator, the 'dSigHatDR()' should be a smooth function of these numbers, although this is not strictly necessary. Return false if the chosen points failed the kinematical cuts.

Implements ThePEG::MEBase.

Reimplemented in Herwig::MEHiggsPair, Herwig::MEHiggsPairJet, Herwig::MEHiggsPairOL, Herwig::DISBase, Herwig::GeneralQQHiggs, Herwig::MEDiffraction, Herwig::MEPP2Higgs, Herwig::MEPP2QQHiggs, Herwig::MEPP2WJet, Herwig::MEPP2ZJet, Herwig::MEfftoffH, Herwig::MEfftoVH, Herwig::MEMinBias, Herwig::MEee2gZ2llPowheg, Herwig::MEPP2GammaGammaPowheg, Herwig::MEPP2HiggsPowheg, Herwig::MEPP2HiggsVBFPowheg, Herwig::MEPP2VVPowheg, Herwig::MEPP2WHPowheg, Herwig::MEPP2ZHPowheg, Herwig::MEqq2gZ2ffPowheg, and Herwig::MEqq2W2ffPowheg.

◆ getCosTheta()

virtual double Herwig::HwMEBase::getCosTheta	(	double	cthmin,
		double	cthmax,
		const double	r
	)

protectedvirtual

Used internally by generateKinematics, after calculating the limits on cos(theta).

Reimplemented in Herwig::MEPP2VV, and Herwig::MEee2VV.

◆ hasMECorrection()

virtual bool Herwig::HwMEBase::hasMECorrection ( )

inlinevirtual

Has an old fashioned ME correction.

Reimplemented in Herwig::DISBase, Herwig::DrellYanBase, Herwig::MEPP2Higgs, Herwig::MEPP2HiggsVBF, Herwig::MEee2ff, Herwig::MEee2gZ2ll, Herwig::MEee2gZ2qq, and Herwig::MEee2ZH.

Definition at line 97 of file HwMEBase.h.

◆ hasPOWHEGCorrection()

virtual POWHEGType Herwig::HwMEBase::hasPOWHEGCorrection ( )

inlinevirtual

Has a POWHEG style correction.

Reimplemented in Herwig::DISBase, Herwig::DrellYanBase, Herwig::MEPP2Higgs, Herwig::MEPP2HiggsVBF, Herwig::MEee2ff, Herwig::MEee2gZ2ll, Herwig::MEee2gZ2qq, Herwig::MEee2ZH, Herwig::MEPP2GammaGammaPowheg, and Herwig::MEPP2VVPowheg.

Definition at line 92 of file HwMEBase.h.

◆ Init()

static void Herwig::HwMEBase::Init ( )

static

The standard Init function used to initialize the interfaces.

Called exactly once for each class by the class description system before the main function starts or when this class is dynamically loaded.

◆ initializeMECorrection()

virtual void Herwig::HwMEBase::initializeMECorrection	(	RealEmissionProcessPtr	,
		double &	,
		double &
	)

virtual

Initialize the ME correction.

Reimplemented in Herwig::DISBase, Herwig::MEPP2Higgs, Herwig::MEPP2HiggsVBF, Herwig::MEee2gZ2qq, and Herwig::DrellYanBase.

◆ massOption()

void Herwig::HwMEBase::massOption ( vector< unsigned int > iopt )

inlineprotected

Set the treatment of the outgoing masses.

Parameters

iopt	The option for the treatment of the mass

Definition at line 206 of file HwMEBase.h.

References massOption_.

Referenced by Herwig::MEee2ff::MEee2ff(), Herwig::MEee2gZ2ll::MEee2gZ2ll(), Herwig::MEPP2GammaGamma::MEPP2GammaGamma(), and Herwig::MEQCD2to2Fast::MEQCD2to2Fast().

◆ nDim()

virtual int Herwig::HwMEBase::nDim ( ) const

virtual

The number of internal degreed of freedom used in the matrix element.

Reimplemented from ThePEG::MEBase.

Reimplemented in Herwig::MEHiggsPair, Herwig::MEHiggsPairJet, Herwig::MEHiggsPairOL, Herwig::DISBase, Herwig::GeneralQQHiggs, Herwig::MEDiffraction, Herwig::MEPP2Higgs, Herwig::MEPP2QQHiggs, Herwig::MEPP2WJet, Herwig::MEPP2ZJet, Herwig::MEfftoffH, Herwig::MEfftoVH, Herwig::MEMinBias, Herwig::MEee2gZ2llPowheg, Herwig::MEPP2GammaGammaPowheg, Herwig::MEPP2HiggsPowheg, Herwig::MEPP2HiggsVBFPowheg, Herwig::MEPP2VVPowheg, Herwig::MEPP2WHPowheg, Herwig::MEPP2ZHPowheg, Herwig::MEqq2gZ2ffPowheg, and Herwig::MEqq2W2ffPowheg.

◆ operator=()

HwMEBase & Herwig::HwMEBase::operator= ( const HwMEBase & )

privatedelete

The assignment operator is private and must never be called.

In fact, it should not even be implemented.

◆ persistentInput()

void Herwig::HwMEBase::persistentInput	(	PersistentIStream &	is,
		int	version
	)

Function used to read in object persistently.

Parameters

is	the persistent input stream read from.
version	the version number of the object when written.

◆ persistentOutput()

void Herwig::HwMEBase::persistentOutput ( PersistentOStream & os ) const

Function used to write out object persistently.

Parameters

os	the persistent output stream written to.

◆ phi() [1/2]

double Herwig::HwMEBase::phi ( ) const

inlineprotected

Return the azimuth angle of the last set phase space point.

Definition at line 181 of file HwMEBase.h.

References lastPhi_.

◆ phi() [2/2]

void Herwig::HwMEBase::phi ( double phi )

inlineprotected

Set the azimuth angle of the last set phase space point.

Definition at line 199 of file HwMEBase.h.

References lastPhi_, and phi().

Referenced by phi().

◆ rescaledMomenta()

const vector< Lorentz5Momentum > & Herwig::HwMEBase::rescaledMomenta ( ) const

inlineprotected

Access to the rescaled momenta.

Definition at line 232 of file HwMEBase.h.

References rescaledMomenta_.

◆ rescalingOption()

void Herwig::HwMEBase::rescalingOption ( unsigned int iopt )

inlineprotected

Rescaled momenta for the helicity ME.

Set the treatment of the rescaling of the momenta for the matrix element calculation

Parameters

iopt	The rescaling option

Definition at line 219 of file HwMEBase.h.

References rescaleOption_.

◆ setKinematics()

virtual void Herwig::HwMEBase::setKinematics ( )

virtual

Set the typed and momenta of the incoming and outgoing partons to be used in subsequent calls to me() and colourGeometries() according to the associated XComb object.

Reimplemented from ThePEG::MEBase.

Reimplemented in Herwig::MEHiggsPair, Herwig::MEHiggsPairJet, Herwig::MEHiggsPairOL, Herwig::DrellYanBase, Herwig::GeneralQQHiggs, Herwig::MEDiffraction, Herwig::MEPP2Higgs, Herwig::MEPP2QQHiggs, Herwig::MEfftoffH, Herwig::MEfftoVH, and Herwig::MEMinBias.

Referenced by Herwig::DrellYanBase::setKinematics(), and Herwig::MEPP2Higgs::setKinematics().

◆ softMatrixElementVeto()

virtual bool Herwig::HwMEBase::softMatrixElementVeto	(	PPtr	parent,
		PPtr	progenitor,
		const bool &	fs,
		const Energy &	highestpT,
		const vector< tcPDPtr > &	ids,
		const double &	z,
		const Energy &	scale,
		const Energy &	pT
	)

virtual

Apply the soft matrix element correction.

Parameters

parent	The initial particle in the current branching
progenitor	The progenitor particle of the jet
fs	Whether the emission is initial or final-state
highestpT	The highest pT so far in the shower
ids	ids of the particles produced in the branching
z	The momentum fraction of the branching
scale	the evolution scale of the branching
pT	The transverse momentum of the branching

Returns: If true the emission should be vetoed

Reimplemented in Herwig::DISBase, Herwig::DrellYanBase, Herwig::MEPP2Higgs, Herwig::MEPP2HiggsVBF, and Herwig::MEee2gZ2qq.

◆ tHat() [1/2]

Energy2 Herwig::HwMEBase::tHat ( ) const

inlineprotected

Return the \(\hat{t}\) of the last set phase space point.

Definition at line 171 of file HwMEBase.h.

References lastTHat_.

Referenced by Herwig::MEQCD2to2Fast::gg2ggME(), Herwig::MEQCD2to2Fast::gg2qqbarME(), Herwig::MEQCD2to2Fast::qbarg2qbargME(), Herwig::MEQCD2to2Fast::qbarqbar2qbarqbarME(), Herwig::MEQCD2to2Fast::qg2qgME(), Herwig::MEQCD2to2Fast::qq2qqME(), Herwig::MEQCD2to2Fast::qqbar2ggME(), Herwig::MEQCD2to2Fast::qqbar2qqbarME(), and Herwig::GeneralHardME::scale().

◆ tHat() [2/2]

void Herwig::HwMEBase::tHat ( Energy2 e2 )

inlineprotected

Set the \(\hat{t}\) of the last set phase space point.

Definition at line 189 of file HwMEBase.h.

References lastTHat_.

◆ uHat() [1/2]

Energy2 Herwig::HwMEBase::uHat ( ) const

inlineprotected

Return the \(\hat{u}\) of the last set phase space point.

Definition at line 176 of file HwMEBase.h.

References lastUHat_.

Referenced by Herwig::MEQCD2to2Fast::gg2ggME(), Herwig::MEQCD2to2Fast::gg2qqbarME(), Herwig::MEQCD2to2Fast::qbarg2qbargME(), Herwig::MEQCD2to2Fast::qbarqbar2qbarqbarME(), Herwig::MEQCD2to2Fast::qg2qgME(), Herwig::MEQCD2to2Fast::qq2qqME(), Herwig::MEQCD2to2Fast::qqbar2ggME(), Herwig::MEQCD2to2Fast::qqbar2qqbarME(), and Herwig::GeneralHardME::scale().

◆ uHat() [2/2]

void Herwig::HwMEBase::uHat ( Energy2 e2 )

inlineprotected

Set the \(\hat{u}\) of the last set phase space point.

Definition at line 194 of file HwMEBase.h.

References lastUHat_.

Member Data Documentation

◆ lastPhi_

double Herwig::HwMEBase::lastPhi_

private

The azimuth angle of the last set phase space point.

Definition at line 277 of file HwMEBase.h.

Referenced by phi().

◆ lastTHat_

Energy2 Herwig::HwMEBase::lastTHat_

private

The \(\hat{t}\) of the last set phase space point.

Definition at line 267 of file HwMEBase.h.

Referenced by tHat().

◆ lastUHat_

Energy2 Herwig::HwMEBase::lastUHat_

private

The \(\hat{u}\) of the last set phase space point.

Definition at line 272 of file HwMEBase.h.

Referenced by uHat().

◆ massOption_

vector<unsigned int> Herwig::HwMEBase::massOption_

private

Option for the treatment of the particle masses.

Definition at line 262 of file HwMEBase.h.

Referenced by massOption().

◆ rescaledMomenta_

vector<Lorentz5Momentum> Herwig::HwMEBase::rescaledMomenta_

private

Rescaled momenta for use in ME calculations.

Definition at line 287 of file HwMEBase.h.

Referenced by rescaledMomenta().

◆ rescaleOption_

unsigned int Herwig::HwMEBase::rescaleOption_

private

Produced to produce rescaled momenta.

Definition at line 282 of file HwMEBase.h.

Referenced by rescalingOption().

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

HwMEBase.h

Public Member Functions

Protected Member Functions

Virtual functions required by the MEBase class.

Set the cached values in of the last set phase space point.

Functions used by the persistent I/O system.

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

◆ POWHEGType

Constructor & Destructor Documentation

◆ HwMEBase()

Member Function Documentation

◆ applyHardMatrixElementCorrection()

◆ dSigHatDR()

◆ generateHardest()

◆ generateKinematics()

◆ getCosTheta()

◆ hasMECorrection()

◆ hasPOWHEGCorrection()

◆ Init()

◆ initializeMECorrection()

◆ massOption()

◆ nDim()

◆ operator=()

◆ persistentInput()

◆ persistentOutput()

◆ phi() [1/2]

◆ phi() [2/2]

◆ rescaledMomenta()

◆ rescalingOption()

◆ setKinematics()

◆ softMatrixElementVeto()

◆ tHat() [1/2]

◆ tHat() [2/2]

◆ uHat() [1/2]

◆ uHat() [2/2]

Member Data Documentation

◆ lastPhi_

◆ lastTHat_

◆ lastUHat_

◆ massOption_

◆ rescaledMomenta_

◆ rescaleOption_