Herwig
7.2.1
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Here is the documentation of the MEPP2GammaGammaPowheg class. More...
#include <MEPP2GammaGammaPowheg.h>
Public Member Functions | |
Standard constructors and destructors. | |
MEPP2GammaGammaPowheg () | |
The default constructor. | |
Member functions for the generation of hard QCD radiation | |
virtual POWHEGType | hasPOWHEGCorrection () |
Has a POWHEG style correction. | |
virtual RealEmissionProcessPtr | generateHardest (RealEmissionProcessPtr, ShowerInteraction) |
Apply the POWHEG style correction. | |
Virtual functions required by the MEBase class. | |
virtual unsigned int | orderInAlphaS () const |
Return the order in in which this matrix element is given. | |
virtual unsigned int | orderInAlphaEW () const |
Return the order in in which this matrix element is given. | |
virtual double | me2 () const |
The matrix element for the kinematical configuration previously provided by the last call to setKinematics(), suitably scaled by sHat() to give a dimension-less number. More... | |
virtual Energy2 | scale () const |
Return the scale associated with the last set phase space point. | |
virtual int | nDim () const |
The number of internal degrees 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 . More... | |
virtual CrossSection | dSigHatDR () const |
Return the matrix element squared differential in the variables given by the last call to generateKinematics(). | |
virtual void | getDiagrams () const |
Add all possible diagrams with the add() function. | |
virtual Selector< DiagramIndex > | diagrams (const DiagramVector &dv) const |
Get diagram selector. More... | |
virtual Selector< const ColourLines * > | colourGeometries (tcDiagPtr diag) const |
Return a Selector with possible colour geometries for the selected diagram weighted by their relative probabilities. More... | |
Functions used by the persistent I/O system. | |
void | persistentOutput (PersistentOStream &os) const |
Function used to write out object persistently. More... | |
void | persistentInput (PersistentIStream &is, int version) |
Function used to read in object persistently. More... | |
Public Member Functions inherited from Herwig::HwMEBase | |
HwMEBase () | |
Default constructor. | |
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. | |
void | persistentOutput (PersistentOStream &os) const |
Function used to write out object persistently. More... | |
void | persistentInput (PersistentIStream &is, int version) |
Function used to read in object persistently. More... | |
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. More... | |
Public Member Functions inherited from ThePEG::MEBase | |
virtual double | alphaS () const |
virtual double | alphaEM () const |
void | setKinematics (tPPair in, const PVector &out) |
virtual void | constructVertex (tSubProPtr sub) |
virtual void | constructVertex (tSubProPtr sub, const ColourLines *cl) |
virtual bool | wantCMS () const |
virtual bool | headCuts () const |
virtual bool | ignoreCuts () const |
virtual bool | apply () const |
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 bool | noMirror () const |
const DiagramVector & | diagrams () const |
virtual const ColourLines & | selectColourGeometry (tcDiagPtr diag) 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) |
virtual double | alphaS () const |
virtual double | alphaEM () const |
void | setKinematics (tPPair in, const PVector &out) |
virtual void | constructVertex (tSubProPtr sub) |
virtual void | constructVertex (tSubProPtr sub, const ColourLines *cl) |
virtual bool | wantCMS () const |
virtual bool | headCuts () const |
virtual bool | ignoreCuts () const |
virtual bool | apply () const |
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 bool | noMirror () const |
const DiagramVector & | diagrams () const |
virtual const ColourLines & | selectColourGeometry (tcDiagPtr diag) 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 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 |
void | persistentOutput (PersistentOStream &os) const |
void | persistentInput (PersistentIStream &is, int version) |
Public Member Functions inherited from ThePEG::InterfacedBase | |
string | fullName () const |
string | name () const |
string | path () const |
string | comment () const |
void | setup (istream &is) |
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 |
void | persistentOutput (PersistentOStream &os) const |
void | persistentInput (PersistentIStream &is, int version) |
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 |
void | persistentOutput (PersistentOStream &os) const |
void | persistentInput (PersistentIStream &is, int version) |
Public Member Functions inherited from ThePEG::Base | |
void | debug () 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 StandardXComb & | lastXComb () const |
const StandardXComb & | lastXComb () const |
tXCPtr | lastXCombPtr () const |
tXCPtr | lastXCombPtr () const |
const StandardXComb & | lastHeadXComb () const |
const StandardXComb & | 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 |
Energy2 | lastScale () const |
double | lastAlphaS () const |
double | lastAlphaS () const |
double | lastAlphaEM () const |
double | lastAlphaEM () const |
const vector< Lorentz5Momentum > & | meMomenta () const |
const vector< Lorentz5Momentum > & | meMomenta () const |
double | lastME2 () const |
double | lastME2 () const |
double | lastPreweight () const |
double | lastPreweight () const |
double | jacobian () const |
double | jacobian () const |
CrossSection | lastMECrossSection () const |
CrossSection | lastMECrossSection () const |
double | lastMEPDFWeight () const |
double | lastMEPDFWeight () const |
double | lastMECouplings () const |
double | lastMECouplings () const |
tSubProPtr | subProcess () const |
tSubProPtr | subProcess () const |
const cPDVector & | mePartonData () const |
const cPDVector & | mePartonData () const |
Static Public Member Functions | |
static void | Init () |
The standard Init function used to initialize the interfaces. More... | |
Static Public Member Functions inherited from Herwig::HwMEBase | |
static void | Init () |
The standard Init function used to initialize the interfaces. More... | |
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 () |
Protected Member Functions | |
virtual double | NLOWeight () const |
Calculate of the full next-to-leading order weight. | |
double | loGammaGammaME (const cPDVector &particles, const vector< Lorentz5Momentum > &momenta, bool first=false) const |
Leading-order matrix element for . | |
double | loGammaqME (const cPDVector &particles, const vector< Lorentz5Momentum > &momenta, bool first=false) const |
Leading-order matrix element for . | |
double | loGammaqbarME (const cPDVector &particles, const vector< Lorentz5Momentum > &momenta, bool first=false) const |
Leading-order matrix element for . | |
double | loGammagME (const cPDVector &particles, const vector< Lorentz5Momentum > &momenta, bool first=false) const |
Leading-order matrix element for . | |
InvEnergy2 | realGammaGammagME (const cPDVector &particles, const vector< Lorentz5Momentum > &momenta, DipoleType dipole, RadiationType rad, bool first=false) const |
Real emission matrix element for . | |
InvEnergy2 | realGammaGammaqME (const cPDVector &particles, const vector< Lorentz5Momentum > &momenta, DipoleType dipole, RadiationType rad, bool first=false) const |
Real emission matrix element for . | |
InvEnergy2 | realGammaGammaqbarME (const cPDVector &particles, const vector< Lorentz5Momentum > &momenta, DipoleType dipole, RadiationType rad, bool first=false) const |
Real emission matrix element for . | |
double | subtractedVirtual () const |
The dipole subtractedvirtual contribution. | |
double | subtractedReal (pair< double, double > x, double z, double zJac, double oldqPDF, double newqPDF, double newgPDF, bool order) const |
Subtracted real contribution. | |
double | realME (const cPDVector &particles, const vector< Lorentz5Momentum > &momenta) const |
The real matrix element divided by , to be implemented in the inheriting classes. More... | |
RealEmissionProcessPtr | hardQCDEmission (RealEmissionProcessPtr, ParticleVector, pair< double, double >) |
Generate hard QCD emission. | |
RealEmissionProcessPtr | hardQEDEmission (RealEmissionProcessPtr, ParticleVector, pair< double, double >) |
Generate hard QED emission. | |
pair< double, double > | supressionFunction (Energy pT, Energy scale) const |
The supression function. | |
double | collinearQuark (double x, Energy2 mu2, double jac, double z, double oldPDF, double newPDF) const |
Calculate of the collinear counterterms. More... | |
double | collinearGluon (Energy2 mu2, double jac, double z, double oldPDF, double newPDF) const |
Gluon collinear counter term. | |
Clone Methods. | |
virtual IBPtr | clone () const |
Make a simple clone of this object. More... | |
virtual IBPtr | fullclone () const |
Make a clone of this object, possibly modifying the cloned object to make it sane. More... | |
Standard Interfaced functions. | |
virtual void | doinit () |
Initialize this object after the setup phase before saving an EventGenerator to disk. More... | |
Protected Member Functions inherited from Herwig::HwMEBase | |
void | massOption (vector< unsigned int > iopt) |
Set the treatment of the outgoing masses. More... | |
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). | |
Energy2 | tHat () const |
Return the of the last set phase space point. | |
Energy2 | uHat () const |
Return the of the last set phase space point. | |
double | phi () const |
Return the azimuth angle of the last set phase space point. | |
void | tHat (Energy2 e2) |
Set the of the last set phase space point. | |
void | uHat (Energy2 e2) |
Set the of the last set phase space point. | |
void | phi (double phi) |
Set the azimuth angle of the last set phase space point. | |
void | rescalingOption (unsigned int iopt) |
Rescaled momenta for the helicity ME. More... | |
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. | |
Protected Member Functions inherited from ThePEG::MEBase | |
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 |
virtual void | doinitrun () |
virtual void | doinitrun () |
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 | |
InterfacedBase (string newName) | |
InterfacedBase (const InterfacedBase &i) | |
virtual void | readSetup (istream &is) |
virtual void | doupdate () |
virtual void | dofinish () |
virtual IVector | getReferences () |
virtual void | rebind (const TranslationMap &) |
virtual void | readSetup (istream &is) |
virtual void | doupdate () |
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 &) |
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) |
Private Types | |
enum | DipoleType { IIQCD1 =2, IIQCD2 =4, IFQED1 =5, FIQED1 =6, IFQED2 =7, FIQED2 =8 } |
enum | RadiationType { Subtraction, Hard, Shower } |
Private Member Functions | |
MEPP2GammaGammaPowheg & | operator= (const MEPP2GammaGammaPowheg &)=delete |
The assignment operator is private and must never be called. More... | |
Private Attributes | |
unsigned int | contrib_ |
Whether to generate the positive, negative or leading order contribution. | |
double | power_ |
Power for sampling . | |
tcPDPtr | gluon_ |
Pointer to the gluon ParticleData object. | |
unsigned int | process_ |
Processes. | |
unsigned int | threeBodyProcess_ |
Processes. | |
int | maxflavour_ |
Allowed flavours of the incoming quarks. | |
double | CFfact_ |
Factor for dependent pieces. | |
double | TRfact_ |
Factor for dependent pieces. | |
double | alphaS_ |
Strong coupling. | |
bool | fixedAlphaS_ |
Use a fixed value of . | |
double | alphaEM_ |
Electromagnetic coupling. | |
double | loME_ |
Leading-order matrix element. | |
ProductionMatrixElement | me_ |
The matrix element. | |
DipoleType | dipole_ |
the selected dipole | |
Energy | minpT_ |
The transverse momentum of the jet. | |
ShowerAlphaPtr | alphaQCD_ |
Pointer to the object calculating the strong coupling. | |
ShowerAlphaPtr | alphaQED_ |
Pointer to the object calculating the EM. | |
unsigned int | scaleChoice_ |
Scale choice. | |
double | scalePreFactor_ |
Scale factor. | |
AbstractFFVVertexPtr | FFPvertex_ |
Vertices. More... | |
AbstractFFVVertexPtr | FFGvertex_ |
FFGVertex. | |
double | zTilde_ |
Kinematic variables for the real radiation. More... | |
double | vTilde_ |
Second variable. | |
double | phi_ |
Azimuthal angle. | |
unsigned int | supressionFunction_ |
Supression Function. More... | |
unsigned int | supressionScale_ |
Choice for the scale in the supression function. | |
Energy | lambda_ |
Scalar for the supression function. | |
bool | quarkplus_ |
Hard emission stuff. More... | |
vector< tcBeamPtr > | beams_ |
Properties of the incoming particles. More... | |
vector< tcPDPtr > | partons_ |
Pointers to the ParticleDataObjects for the partons. | |
double | preQCDqqbarq_ |
Constants for the sampling. More... | |
double | preQCDqqbarqbar_ |
The prefactor, for the channel. | |
double | preQCDqg_ |
The prefactor, for the channel. | |
double | preQCDgqbar_ |
The prefactor, for the channel. | |
double | preQEDqqbarq_ |
double | preQEDqqbarqbar_ |
double | preQEDqgq_ |
double | preQEDgqbarqbar_ |
vector< double > | prefactor_ |
The prefactors as a vector for easy use. | |
Additional Inherited Members | |
Public Types inherited from Herwig::HwMEBase | |
enum | POWHEGType { No, ISR, FSR, Both } |
Virtual members to be overridden by inheriting classes which implement hard corrections. More... | |
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< StandardXComb >::pointer | XCPtr |
typedef ThePEG::Ptr< StandardXComb >::const_pointer | cXCPtr |
typedef ThePEG::Ptr< StandardXComb >::transient_pointer | tXCPtr |
typedef ThePEG::Ptr< StandardXComb >::transient_const_pointer | tcXCPtr |
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 |
Here is the documentation of the MEPP2GammaGammaPowheg class.
Definition at line 23 of file MEPP2GammaGammaPowheg.h.
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protectedvirtual |
Make a simple clone of this object.
Implements ThePEG::InterfacedBase.
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protected |
Calculate of the collinear counterterms.
Quark collinear counter term
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virtual |
Return a Selector with possible colour geometries for the selected diagram weighted by their relative probabilities.
diag | the diagram chosen. |
Implements ThePEG::MEBase.
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virtual |
Get diagram selector.
With the information previously supplied with the setKinematics method, a derived class may optionally override this method to weight the given diagrams with their (although certainly not physical) relative probabilities.
dv | the diagrams to be weighted. |
Reimplemented from ThePEG::MEBase.
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protectedvirtual |
Initialize this object after the setup phase before saving an EventGenerator to disk.
InitException | if object could not be initialized properly. |
Reimplemented from ThePEG::MEBase.
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protectedvirtual |
Make a clone of this object, possibly modifying the cloned object to make it sane.
Reimplemented from ThePEG::InterfacedBase.
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virtual |
Generate internal degrees of freedom given nDim() uniform random numbers in the interval .
To help the phase space generator, the dSigHatDR should be a smooth function of these numbers, although this is not strictly necessary.
r | a pointer to the first of nDim() consecutive random numbers. |
Reimplemented from Herwig::HwMEBase.
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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.
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virtual |
The matrix element for the kinematical configuration previously provided by the last call to setKinematics(), suitably scaled by sHat() to give a dimension-less number.
Implements ThePEG::MEBase.
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privatedelete |
The assignment operator is private and must never be called.
In fact, it should not even be implemented.
void Herwig::MEPP2GammaGammaPowheg::persistentInput | ( | PersistentIStream & | is, |
int | version | ||
) |
Function used to read in object persistently.
is | the persistent input stream read from. |
version | the version number of the object when written. |
void Herwig::MEPP2GammaGammaPowheg::persistentOutput | ( | PersistentOStream & | os | ) | const |
Function used to write out object persistently.
os | the persistent output stream written to. |
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protected |
The real matrix element divided by , to be implemented in the inheriting classes.
particles | The ParticleData objects of the particles |
momenta | The momenta of the particles |
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private |
Properties of the incoming particles.
Pointers to the BeamParticleData objects
Definition at line 471 of file MEPP2GammaGammaPowheg.h.
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Constants for the sampling.
The distribution is assumed to have the form The prefactor, for the channel
Definition at line 487 of file MEPP2GammaGammaPowheg.h.
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Hard emission stuff.
Whether the quark is in the + or - z direction
Definition at line 461 of file MEPP2GammaGammaPowheg.h.
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Supression Function.
Choice of the supression function
Definition at line 440 of file MEPP2GammaGammaPowheg.h.
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Kinematic variables for the real radiation.
First variable
Definition at line 350 of file MEPP2GammaGammaPowheg.h.