Herwig
7.2.1
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The MEee2gZ2qq class implements the matrix element for including spin correlations. More...
#include <MEee2gZ2qq.h>
Public Member Functions | |
MEee2gZ2qq () | |
The default constructor. | |
virtual POWHEGType | hasPOWHEGCorrection () |
Members for hard corrections to the emission of QCD radiation. 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... | |
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 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... | |
virtual void | constructVertex (tSubProPtr) |
Construct the vertex of spin correlations. | |
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 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[. More... | |
virtual CrossSection | dSigHatDR () const |
Return the matrix element for the kinematical configuation previously provided by the last call to setKinematics(). More... | |
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... | |
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, 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, 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 | |
double | loME (const vector< cPDPtr > &partons, const vector< Lorentz5Momentum > &momenta, bool first) const |
Calculate the matrix element for . More... | |
ProductionMatrixElement | HelicityME (vector< SpinorWaveFunction > &fin, vector< SpinorBarWaveFunction > &ain, vector< SpinorBarWaveFunction > &fout, vector< SpinorWaveFunction > &aout, double &me, double &cont, double &BW) const |
Member to calculate the matrix element. More... | |
double | meRatio (vector< cPDPtr > partons, vector< Lorentz5Momentum > momenta, unsigned int iemitter, ShowerInteraction inter, bool subtract=false) const |
The ratio of the matrix element for one additional jet over the leading order result. More... | |
InvEnergy2 | realME (const vector< cPDPtr > &partons, const vector< Lorentz5Momentum > &momenta, ShowerInteraction inter) const |
Calculate the matrix element for . More... | |
AbstractFFVVertexPtr | FFZVertex () const |
Pointer to the fermion-antifermion Z vertex. | |
AbstractFFVVertexPtr | FFPVertex () const |
Pointer to the fermion-antifermion photon vertex. | |
PDPtr | Z0 () const |
Pointer to the particle data object for the Z. | |
PDPtr | gamma () const |
Pointer to the particle data object for the photon. | |
PDPtr | gluon () const |
Pointer to the particle data object for the gluon. | |
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... | |
virtual void | rebind (const TranslationMap &trans) |
Rebind pointer to other Interfaced objects. More... | |
virtual IVector | getReferences () |
Return a vector of all pointers to Interfaced objects used in this object. 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 void | readSetup (istream &is) |
virtual void | doupdate () |
virtual void | dofinish () |
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 Member Functions | |
pair< Energy, ShowerInteraction > | generateHard (RealEmissionProcessPtr, vector< Lorentz5Momentum > &emission, unsigned int &iemit, unsigned int &ispect, bool applyVeto, ShowerInteraction) |
Generate the momenta for a hard configuration. | |
RealEmissionProcessPtr | calculateRealEmission (RealEmissionProcessPtr born, bool veto, ShowerInteraction inter) |
Calculate the reall emission. | |
double | getKfromX (double, double) |
Calculate . | |
MEee2gZ2qq & | operator= (const MEee2gZ2qq &)=delete |
The assignment operator is private and must never be called. More... | |
double | MEV (double, double) |
Vector and axial vector parts of the matrix element. More... | |
double | PS (double x1, double x2) |
The matrix element, given , . More... | |
Private Attributes | |
bool | spinCorrelations_ |
Switch on/off the helivity vertex construction. | |
Energy | d_Q_ |
CM energy. | |
Energy | d_m_ |
Quark mass. | |
double | d_rho_ |
The rho parameter. | |
double | d_v_ |
The v parameter. | |
double | d_kt1_ |
The initial kappa-tilde values for radiation from the quark. | |
double | d_kt2_ |
The initial kappa-tilde values for radiation from the antiquark. | |
ShowerAlphaPtr | alphaQCD_ |
Pointer to the strong coupling. | |
ShowerAlphaPtr | alphaQED_ |
Pointer to the EM coupling. | |
int | minflav_ |
Parameters controlling the leading-order process. More... | |
int | maxflav_ |
The maximum PDG of the quarks to be produced. | |
unsigned int | massopt_ |
Option for the treatment of the top quark mass. | |
AbstractFFVVertexPtr | FFZVertex_ |
Pointers to the vertices. More... | |
AbstractFFVVertexPtr | FFPVertex_ |
Pointer to the fermion-antifermion photon vertex. | |
AbstractFFVVertexPtr | FFGVertex_ |
Pointer to the fermion-antifermion photon vertex. | |
PDPtr | Z0_ |
Pointer to the ParticleData objects. More... | |
PDPtr | gamma_ |
Pointer to the particle data object for the photon. | |
PDPtr | gluon_ |
Pointer to the particle data object for the gluon. | |
Energy | pTminQED_ |
Variables for the POWHEG style corrections. More... | |
Energy | pTminQCD_ |
The cut off on pt for QCD, assuming massless quarks. | |
double | preFactor_ |
Overestimate for the prefactor. | |
vector< cPDPtr > | partons_ |
ParticleData objects for the partons. | |
vector< Lorentz5Momentum > | loMomenta_ |
Momenta of the leading-order partons. | |
Static Private Attributes | |
static const double | EPS_ |
Cut-off parameter. | |
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 |
The MEee2gZ2qq class implements the matrix element for including spin correlations.
The class includes greater control over the type of quark produced than is available in the corresponding matrix element from ThePEG, in addition to spin correlations.
Definition at line 38 of file MEee2gZ2qq.h.
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inlineprotectedvirtual |
Make a simple clone of this object.
Implements ThePEG::InterfacedBase.
Definition at line 197 of file MEee2gZ2qq.h.
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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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inlineprotectedvirtual |
Make a clone of this object, possibly modifying the cloned object to make it sane.
Reimplemented from ThePEG::InterfacedBase.
Definition at line 203 of file MEee2gZ2qq.h.
References ThePEG::MEee2gZ2qq::doinit(), ThePEG::InterfacedBase::getReferences(), and ThePEG::InterfacedBase::rebind().
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protectedvirtual |
Return a vector of all pointers to Interfaced objects used in this object.
Reimplemented from ThePEG::InterfacedBase.
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inlinevirtual |
Members for hard corrections to the emission of QCD radiation.
Has a POWHEG style correction
Reimplemented from Herwig::HwMEBase.
Definition at line 58 of file MEee2gZ2qq.h.
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protected |
Member to calculate the matrix element.
fin | Spinors for incoming fermion |
ain | Spinors for incoming antifermion |
fout | Spinors for outgoing fermion |
aout | Spinors for outgong antifermion |
me | Spin summed Matrix element |
cont | The continuum piece of the matrix element |
BW | The Z piece of the matrix element |
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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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protected |
Calculate the matrix element for .
partons | The incoming and outgoing particles |
momenta | The momenta of the incoming and outgoing particles |
first | Whether or not to calculate the spin correlations |
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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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protected |
The ratio of the matrix element for one additional jet over the leading order result.
In practice
is returned where is the spin and colour summed/averaged matrix element.
partons | The incoming and outgoing particles |
momenta | The momenta of the incoming and outgoing particles |
iemitter | Whether the quark or antiquark is regardede as the emitter |
inter | The type of interaction |
subtract | Whether or not to subtract the relevant dipole term |
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private |
Vector and axial vector parts of the matrix element.
Vector part of the matrix element
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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::MEee2gZ2qq::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::MEee2gZ2qq::persistentOutput | ( | PersistentOStream & | os | ) | const |
Function used to write out object persistently.
os | the persistent output stream written to. |
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private |
The matrix element, given , .
x1 | |
x2 |
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protected |
Calculate the matrix element for .
partons | The incoming and outgoing particles |
momenta | The momenta of the incoming and outgoing particles |
inter | The type of interaction |
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protectedvirtual |
Rebind pointer to other Interfaced objects.
Called in the setup phase after all objects used in an EventGenerator has been cloned so that the pointers will refer to the cloned objects afterwards.
trans | a TranslationMap relating the original objects to their respective clones. |
RebindException | if no cloned object was found for a given pointer. |
Reimplemented from ThePEG::InterfacedBase.
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virtual |
Apply the soft matrix element correction.
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 |
Reimplemented from Herwig::HwMEBase.
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private |
Pointers to the vertices.
Pointer to the fermion-antifermion Z vertex
Definition at line 398 of file MEee2gZ2qq.h.
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private |
Parameters controlling the leading-order process.
The minimum PDG of the quarks to be produced
Definition at line 378 of file MEee2gZ2qq.h.
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private |
Variables for the POWHEG style corrections.
The cut off on pt for QED, assuming massless quarks.
Definition at line 490 of file MEee2gZ2qq.h.
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private |
Pointer to the ParticleData objects.
Pointer to the particle data object for the Z
Definition at line 423 of file MEee2gZ2qq.h.