herwig is hosted by Hepforge, IPPP Durham
Herwig  7.1.5
Herwig::MEqq2W2ffPowheg Class Reference

The MEqq2W2ffPowheg class implements the matrix element for $q\bar{q'}\to W^\pm$ including the decay of the $W^\pm$ to Standard Model fermions. More...

#include <MEqq2W2ffPowheg.h>

Inheritance diagram for Herwig::MEqq2W2ffPowheg:

Public Member Functions

 MEqq2W2ffPowheg ()
 The default constructor.
 
Virtual functions required by the MEBase class.
virtual Energy2 scale () const
 Return the scale associated with the last set phase space point.
 
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...
 
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::MEqq2W2ff
 MEqq2W2ff ()
 The default constructor.
 
virtual unsigned int orderInAlphaS () const
 Return the order in $\alpha_S$ in which this matrix element is given.
 
virtual unsigned int orderInAlphaEW () const
 Return the order in $\alpha_{EW}$ 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 void getDiagrams () const
 Add all possible diagrams with the add() function.
 
virtual Selector< DiagramIndexdiagrams (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.
 
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::DrellYanBase
 DrellYanBase ()
 The default constructor.
 
virtual POWHEGType hasPOWHEGCorrection ()
 Has a POWHEG style correction.
 
virtual bool hasMECorrection ()
 Has an old fashioned ME correction.
 
virtual void initializeMECorrection (RealEmissionProcessPtr, double &initial, double &final)
 Initialize the ME correction.
 
virtual RealEmissionProcessPtr applyHardMatrixElementCorrection (RealEmissionProcessPtr)
 Apply the hard matrix element correction to a given hard process or decay.
 
virtual bool softMatrixElementVeto (ShowerProgenitorPtr initial, ShowerParticlePtr parent, Branching br)
 Apply the soft matrix element correction. More...
 
virtual RealEmissionProcessPtr generateHardest (RealEmissionProcessPtr, ShowerInteraction)
 Apply the POWHEG style correction.
 
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 Herwig::HwMEBase
 HwMEBase ()
 Default constructor.
 
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 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 DiagramVectordiagrams () const
 
virtual const ColourLinesselectColourGeometry (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 DVectormeInfo () 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 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 DiagramVectordiagrams () const
 
virtual const ColourLinesselectColourGeometry (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 DVectormeInfo () 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())
 
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 StandardXComblastXComb () const
 
const StandardXComblastXComb () const
 
tXCPtr lastXCombPtr () const
 
tXCPtr lastXCombPtr () const
 
const StandardXComblastHeadXComb () const
 
const StandardXComblastHeadXComb () const
 
tXCPtr lastHeadXCombPtr () const
 
tXCPtr lastHeadXCombPtr () const
 
const EventHandlerlastEventHandler () const
 
const EventHandlerlastEventHandler () const
 
tPExtrPtr lastExtractor () const
 
tPExtrPtr lastExtractor () const
 
PDFT pdf (tcPPtr parton) const
 
PDFT pdf (tcPPtr parton) const
 
const CutslastCuts () const
 
const CutslastCuts () const
 
tCutsPtr lastCutsPtr () const
 
tCutsPtr lastCutsPtr () const
 
const PPairlastParticles () const
 
const PPairlastParticles () const
 
Energy2 lastS () const
 
Energy2 lastS () const
 
const PPairlastPartons () const
 
const PPairlastPartons () 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 cPDVectormePartonData () const
 
const cPDVectormePartonData () 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::MEqq2W2ff
static void Init ()
 The standard Init function used to initialize the interfaces. More...
 
- Static Public Member Functions inherited from Herwig::DrellYanBase
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 NLOweight () const
 Calculate the correction weight with which leading-order configurations are re-weighted.
 
double x (double xt, double v) const
 Calculate the variable $x=M_{B}^2/s$ from the integration variables.
 
double x_a (double x, double v) const
 Calculate the momentum fraction of the first parton.
 
double x_b (double x, double v) const
 Calculate the momentum fraction of second parton.
 
double xbar (double v) const
 Calculate the minimum of $x$.
 
double Ltilde_qg (double x, double v) const
 Calculate the ratio of the radiative luminosity funcion to the Born luminosity function for the $qg$ initiated channel.
 
double Ltilde_gq (double x, double v) const
 Calculate the ratio of the radiative luminosity funcion to the Born luminosity function for the $g\bar{q}$ initiated channel.
 
double Ltilde_qq (double x, double v) const
 Calculate the ratio of the radiative luminosity funcion to the Born luminosity function for the $q\bar{q}$ initiated channel.
 
double Vtilde_qq () const
 Calculate the soft-virtual contribution to the NLO weight.
 
double Ccalbar_qg (double x) const
 Function for calculation of the $g\bar{q}$ and $g\bar{q}$ initiated real contribution.
 
double Fcal_qg (double x, double v) const
 Function for calculation of the $qg$ initiated real contribution.
 
double Fcal_gq (double x, double v) const
 Function for calculation of the $g\bar{q}$ initiated real contribution.
 
double Fcal_qq (double x, double v) const
 Function for calculation of the $q\bar{q}$ initiated real contribution.
 
double Ftilde_qg (double xt, double v) const
 Function for calculation of the $qg$ initiated real contribution.
 
double Ftilde_gq (double xt, double v) const
 Function for calculation of the $g\bar{q}$ initiated real contribution.
 
double Ftilde_qq (double xt, double v) const
 Function for calculation of the $q\bar{q}$ initiated real contribution.
 
double Ctilde_qg (double x, double v) const
 Function for calculation of the $qg$ initiated real contribution.
 
double Ctilde_gq (double x, double v) const
 Function for calculation of the $g\bar{q}$ initiated real contribution.
 
double Ctilde_qq (double x, double v) const
 Function for calculation of the $q\bar{q}$ initiated real contribution.
 
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::MEqq2W2ff
double qqbarME (vector< SpinorWaveFunction > &fin, vector< SpinorBarWaveFunction > &ain, vector< SpinorBarWaveFunction > &fout, vector< SpinorWaveFunction > &aout, bool me) const
 Matrix element for $q\bar{q}\to \gamma/Z \to f\bar{f}$. More...
 
- Protected Member Functions inherited from Herwig::DrellYanBase
bool applyHard (ParticleVector &quarks, vector< tcBeamPtr > beams, Lorentz5Momentum boson, unsigned int &iemit, unsigned int &itype, vector< Lorentz5Momentum > &pnew, LorentzRotation &trans, pair< double, double > &xnew, Energy2 shad)
 Return the momenta and type of hard matrix element correction. More...
 
double getResult (int emis_type, Energy pt, double yj)
 Returns the matrix element for a given type of process, rapidity of the jet $y_j$ and transverse momentum $p_T$. More...
 
bool getEvent (vector< Lorentz5Momentum > &pnew, int &emissiontype)
 generates the hardest emission (yj,p) More...
 
virtual void dofinish ()
 Finalize 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 $\hat{t}$ 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.
 
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 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 IVector getReferences ()
 
virtual void rebind (const TranslationMap &)
 
virtual void readSetup (istream &is)
 
virtual void doupdate ()
 
virtual IVector getReferences ()
 
virtual void rebind (const TranslationMap &)
 
- Protected Member Functions inherited from ThePEG::Pointer::ReferenceCounted
 ReferenceCounted (const ReferenceCounted &)
 
ReferenceCountedoperator= (const ReferenceCounted &)
 
 ReferenceCounted (const ReferenceCounted &)
 
ReferenceCountedoperator= (const ReferenceCounted &)
 
- Protected Member Functions inherited from ThePEG::Named
const Namedoperator= (const Named &other)
 
const string & name (const string &newName)
 

Private Member Functions

MEqq2W2ffPowhegoperator= (const MEqq2W2ffPowheg &)=delete
 The assignment operator is private and must never be called. More...
 

Private Attributes

double _xb_a
 The momentum fraction of the first parton in the Born process.
 
double _xb_b
 The momentum fraction of the second parton in the Born process.
 
tcPDPtr _parton_a
 The ParticleData object for the first parton in the Born process.
 
tcPDPtr _parton_b
 The ParticleData object for the second parton in the Born process.
 
Ptr< BeamParticleData >::transient_const_pointer _hadron_A
 The BeamParticleData object for the first hadron.
 
Ptr< BeamParticleData >::transient_const_pointer _hadron_B
 The BeamParticleData object for the second hadron.
 
tcPDPtr _gluon
 the ParticleData object for the gluon
 
const double TR_
 The $T_R$ colour factor.
 
const double CF_
 The $C_F$ colour factor.
 
double _alphaS2Pi
 The value of $\frac{\alpha_S}{2\pi}$ used for the calculation.
 
Energy2 _mll2
 The mass squared of the lepton pair.
 
Energy2 _mu2
 The renormalization/factorization scale.
 
unsigned int _contrib
 Parameters for the NLO weight. More...
 
unsigned int _nlo_alphaS_opt
 Whether to use a fixed or a running QCD coupling for the NLO weight.
 
double _fixed_alphaS
 The value of alphaS to use for the nlo weight if _nloalphaSopt=1.
 
double _a
 The magnitude of the correction term to reduce the negative contribution.
 
double _p
 The power of the correction term to reduce the negative contribution.
 
double _eps
 Cut-off for the correction function.
 
unsigned int _scaleopt
 Choice of the scale. More...
 
Energy _fixedScale
 Fixed scale if used.
 
double _scaleFact
 Prefactor if variable scale used.
 
double _xt
 Radiation variables. More...
 
double _v
 The $v$ angular variable.
 
double _oldq
 Values of the PDF's before radiation. More...
 
double _oldqbar
 For the antiquark.
 

Static Private Attributes

static ClassDescription< MEqq2W2ffPowheginitMEqq2W2ffPowheg
 The static object used to initialize the description of this class. More...
 

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< ReweightPtrReweightVector
 
- 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
 

Detailed Description

The MEqq2W2ffPowheg class implements the matrix element for $q\bar{q'}\to W^\pm$ including the decay of the $W^\pm$ to Standard Model fermions.

See also
The interfaces defined for MEqq2W2ffPowheg.

Definition at line 28 of file MEqq2W2ffPowheg.h.

Member Function Documentation

◆ clone()

virtual IBPtr Herwig::MEqq2W2ffPowheg::clone ( ) const
inlineprotectedvirtual

Make a simple clone of this object.

Returns
a pointer to the new object.

Reimplemented from Herwig::MEqq2W2ff.

Definition at line 194 of file MEqq2W2ffPowheg.h.

◆ doinit()

virtual void Herwig::MEqq2W2ffPowheg::doinit ( )
protectedvirtual

Initialize this object after the setup phase before saving an EventGenerator to disk.

Exceptions
InitExceptionif object could not be initialized properly.

Reimplemented from Herwig::MEqq2W2ff.

◆ dSigHatDR()

virtual CrossSection Herwig::MEqq2W2ffPowheg::dSigHatDR ( ) const
virtual

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

Uses me().

Reimplemented from Herwig::HwMEBase.

◆ fullclone()

virtual IBPtr Herwig::MEqq2W2ffPowheg::fullclone ( ) const
inlineprotectedvirtual

Make a clone of this object, possibly modifying the cloned object to make it sane.

Returns
a pointer to the new object.

Reimplemented from Herwig::MEqq2W2ff.

Definition at line 200 of file MEqq2W2ffPowheg.h.

◆ generateKinematics()

virtual bool Herwig::MEqq2W2ffPowheg::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.

Reimplemented from Herwig::HwMEBase.

◆ Init()

static void Herwig::MEqq2W2ffPowheg::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.

◆ operator=()

MEqq2W2ffPowheg& Herwig::MEqq2W2ffPowheg::operator= ( const MEqq2W2ffPowheg )
privatedelete

The assignment operator is private and must never be called.

In fact, it should not even be implemented.

◆ persistentInput()

void Herwig::MEqq2W2ffPowheg::persistentInput ( PersistentIStream is,
int  version 
)

Function used to read in object persistently.

Parameters
isthe persistent input stream read from.
versionthe version number of the object when written.

◆ persistentOutput()

void Herwig::MEqq2W2ffPowheg::persistentOutput ( PersistentOStream os) const

Function used to write out object persistently.

Parameters
osthe persistent output stream written to.

Member Data Documentation

◆ _contrib

unsigned int Herwig::MEqq2W2ffPowheg::_contrib
private

Parameters for the NLO weight.

Whether to generate the positive, negative or leading order contribution

Definition at line 298 of file MEqq2W2ffPowheg.h.

◆ _oldq

double Herwig::MEqq2W2ffPowheg::_oldq
mutableprivate

Values of the PDF's before radiation.

For the quark

Definition at line 368 of file MEqq2W2ffPowheg.h.

◆ _scaleopt

unsigned int Herwig::MEqq2W2ffPowheg::_scaleopt
private

Choice of the scale.

Type of scale

Definition at line 333 of file MEqq2W2ffPowheg.h.

◆ _xt

double Herwig::MEqq2W2ffPowheg::_xt
private

Radiation variables.

The $\tilde{x}$ variable

Definition at line 353 of file MEqq2W2ffPowheg.h.

◆ initMEqq2W2ffPowheg

ClassDescription<MEqq2W2ffPowheg> Herwig::MEqq2W2ffPowheg::initMEqq2W2ffPowheg
staticprivate

The static object used to initialize the description of this class.

Indicates that this is a concrete class with persistent data.

Definition at line 221 of file MEqq2W2ffPowheg.h.


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