Herwig 7.3.0
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The MENeutralCurrentDIS class provides the matrix elements for neutral current DIS. More...
#include <MENeutralCurrentDIS.h>
Public Member Functions | |
MENeutralCurrentDIS () | |
The default constructor. | |
Virtual functions required by the MEBase class. | |
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. | |
virtual void | getDiagrams () const |
Add all possible diagrams with the add() function. | |
virtual Selector< DiagramIndex > | diagrams (const DiagramVector &dv) const |
Get diagram selector. | |
virtual Selector< const ColourLines * > | colourGeometries (tcDiagPtr diag) const |
Return a Selector with possible colour geometries for the selected diagram weighted by their relative probabilities. | |
virtual void | constructVertex (tSubProPtr) |
Construct the vertex of spin correlations. | |
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DISBase () | |
The default constructor. | |
virtual | ~DISBase () |
The default constructor. | |
virtual bool | hasMECorrection () |
Members for the old-fashioned matrix element 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 POWHEGType | hasPOWHEGCorrection () |
Members for the POWHEG stype correction. | |
virtual RealEmissionProcessPtr | generateHardest (RealEmissionProcessPtr, ShowerInteraction) |
Apply the POWHEG style correction. | |
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 \( ]0,1[ \). | |
virtual CrossSection | dSigHatDR () const |
Return the matrix element squared differential in the variables given by the last call to generateKinematics(). | |
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. | |
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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. | |
void | persistentInput (PersistentIStream &is, int version) |
Function used to read in object persistently. | |
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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) |
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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 |
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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 |
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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 |
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void | debug () const |
virtual void | debugme () const |
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CounterType | referenceCount () const |
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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 |
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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 | |
Standard Interfaced functions. | |
virtual void | doinit () |
Initialize this object after the setup phase before saving an EventGenerator to disk. | |
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double | NLOWeight () const |
The NLO weight. | |
double | generateComptonPoint (double &xp, double &zp) |
Members for the matrix element correction. | |
double | generateBGFPoint (double &xp, double &zp) |
Generate the values of \(x_p\) and \(z_p\). | |
vector< double > | ComptonME (double xp, double x2, double xperp, bool norm) |
Return the coefficients for the matrix element piece for the QCD compton case. | |
vector< double > | BGFME (double xp, double x2, double x3, double xperp, bool norm) |
Return the coefficients for the matrix element piece for the QCD compton case. | |
void | generateCompton () |
Members for the POWHEG correction. | |
void | generateBGF () |
Generate a BGF process. | |
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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 | 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). | |
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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 |
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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) |
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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 &) |
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ReferenceCounted (const ReferenceCounted &) | |
ReferenceCounted & | operator= (const ReferenceCounted &) |
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const Named & | operator= (const Named &other) |
const string & | name (const string &newName) |
Clone Methods. | |
AbstractFFVVertexPtr | _theFFZVertex |
Pointer to the vertices for the helicity calculations. | |
AbstractFFVVertexPtr | _theFFPVertex |
Pointer to the photon vertex. | |
tcPDPtr | _z0 |
Pointers to the intermediate resonances. | |
tcPDPtr | _gamma |
Pointer to the photon ParticleData object. | |
int | _minflavour |
Switches to control the particles in the hard process. | |
int | _maxflavour |
Maximum flavour of the incoming quarks. | |
unsigned int | _gammaZ |
Whether to include both \(Z^0\) and \(\gamma\) or only one. | |
ProductionMatrixElement | _me |
Matrix element for spin correlations. | |
double | _sinW |
Electroweak parameters. | |
double | _cosW |
\(\cos\theta_W\) | |
Energy2 | _mz2 |
The square of the Z mass. | |
virtual IBPtr | clone () const |
Make a simple clone of this object. | |
virtual IBPtr | fullclone () const |
Make a clone of this object, possibly modifying the cloned object to make it sane. | |
MENeutralCurrentDIS & | operator= (const MENeutralCurrentDIS &)=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. | |
double | helicityME (vector< SpinorWaveFunction > &f1, vector< SpinorWaveFunction > &f2, vector< SpinorBarWaveFunction > &a1, vector< SpinorBarWaveFunction > &a2, bool lorder, bool qorder, bool me) const |
Matrix element for \(\ell q\to \gamma/Z \to \ell q\). | |
unsigned int | gammaZOption () const |
Option for treatment of \(\gamma/Z\) terms. | |
virtual double | A (tcPDPtr lin, tcPDPtr lout, tcPDPtr qin, tcPDPtr qout, Energy2 scale) const |
Calculate the coefficient A for the correlations in the hard radiation. | |
Additional Inherited Members | |
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enum | POWHEGType { No , ISR , FSR , Both } |
Virtual members to be overridden by inheriting classes which implement hard corrections. More... | |
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typedef vector< DiagPtr > | DiagramVector |
typedef DiagramVector::size_type | DiagramIndex |
typedef vector< ReweightPtr > | ReweightVector |
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enum | InitState |
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typedef unsigned int | CounterType |
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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 |
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static void | Init () |
The standard Init function used to initialize the interfaces. | |
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static void | Init () |
The standard Init function used to initialize the interfaces. | |
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static void | Init () |
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static void | Init () |
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static void | Init () |
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static void | Init () |
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static void | Init () |
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initializing | |
uninitialized | |
initialized | |
runready | |
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const unsigned long | uniqueId |
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static void | registerRepository (IBPtr) |
static void | registerRepository (IBPtr, string newName) |
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XCPtr | theLastXComb |
The MENeutralCurrentDIS class provides the matrix elements for neutral current DIS.
For consistency both the incoming and outgoing quarks are assumed to be massless.
Definition at line 27 of file MENeutralCurrentDIS.h.
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protectedvirtual |
Calculate the coefficient A for the correlations in the hard radiation.
Implements Herwig::DISBase.
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inlineprotectedvirtual |
Make a simple clone of this object.
Implements ThePEG::InterfacedBase.
Definition at line 168 of file MENeutralCurrentDIS.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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Construct the vertex of spin correlations.
Reimplemented from 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 Herwig::DISBase.
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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 174 of file MENeutralCurrentDIS.h.
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inlineprotected |
Option for treatment of \(\gamma/Z\) terms.
Definition at line 139 of file MENeutralCurrentDIS.h.
References _gammaZ.
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virtual |
Add all possible diagrams with the add() function.
Implements ThePEG::MEBase.
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protected |
Matrix element for \(\ell q\to \gamma/Z \to \ell q\).
f1 | Fermion on lepton line |
a1 | Anti-fermion on lepton line |
f2 | Fermion on quark line |
a2 | Anti-fermion on quark line |
lorder | The order of particles on the lepton line |
qorder | The order of particles on the quark line |
me | Whether or not to calculate the matrix element for spin correlations |
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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.
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virtual |
Return the order in \(\alpha_{EW}\) in which this matrix element is given.
Implements ThePEG::MEBase.
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virtual |
Return the order in \(\alpha_S\) in which this matrix element is given.
Implements ThePEG::MEBase.
void Herwig::MENeutralCurrentDIS::persistentInput | ( | PersistentIStream & | is, |
int | version | ||
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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::MENeutralCurrentDIS::persistentOutput | ( | PersistentOStream & | os | ) | const |
Function used to write out object persistently.
os | the persistent output stream written to. |
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private |
\(\cos\theta_W\)
Definition at line 254 of file MENeutralCurrentDIS.h.
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private |
Pointer to the photon ParticleData object.
Definition at line 214 of file MENeutralCurrentDIS.h.
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private |
Whether to include both \(Z^0\) and \(\gamma\) or only one.
Definition at line 234 of file MENeutralCurrentDIS.h.
Referenced by gammaZOption().
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private |
Maximum flavour of the incoming quarks.
Definition at line 229 of file MENeutralCurrentDIS.h.
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private |
Matrix element for spin correlations.
Definition at line 240 of file MENeutralCurrentDIS.h.
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private |
Switches to control the particles in the hard process.
Minimumflavour of the incoming quarks
Definition at line 224 of file MENeutralCurrentDIS.h.
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private |
The square of the Z mass.
Definition at line 259 of file MENeutralCurrentDIS.h.
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private |
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private |
Pointer to the photon vertex.
Definition at line 199 of file MENeutralCurrentDIS.h.
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private |
Pointer to the vertices for the helicity calculations.
Pointer to the Z vertex
Definition at line 194 of file MENeutralCurrentDIS.h.
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private |
Pointers to the intermediate resonances.
Pointer to the Z ParticleData object
Definition at line 209 of file MENeutralCurrentDIS.h.