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Herwig  7.2.1
Herwig::MatchboxAmplitude Class Referenceabstract

MatchboxAmplitude is the base class for amplitude implementations inside Matchbox. More...

#include <MatchboxAmplitude.h>

Inheritance diagram for Herwig::MatchboxAmplitude:

Public Member Functions

virtual Complex value (const tcPDVector &particles, const vector< Lorentz5Momentum > &momenta, const vector< int > &helicities)
 Return the amplitude. More...
 
Ptr< MatchboxFactory >::tptr factory () const
 Return the factory which produced this matrix element.
 
Standard constructors and destructors.
 MatchboxAmplitude ()
 The default constructor.
 
virtual ~MatchboxAmplitude ()
 The destructor.
 
Subprocess information
virtual bool canHandle (const PDVector &p, Ptr< MatchboxFactory >::tptr, bool) const
 Return true, if this amplitude can handle the given process.
 
virtual bool canHandle (const PDVector &) const
 Return true, if this amplitude can handle the given process.
 
virtual int nDimAdditional () const
 Return the number of random numbers required to evaluate this amplitude at a fixed phase space point.
 
virtual Ptr< MatchboxMEBase >::ptr makeME (const PDVector &) const
 Return a ME instance appropriate for this amplitude and the given subprocesses.
 
virtual void orderInGs (unsigned int)
 Set the (tree-level) order in $g_S$ in which this matrix element should be evaluated.
 
virtual unsigned int orderInGs () const =0
 Return the (tree-level) order in $g_S$ in which this matrix element is given.
 
virtual void orderInGem (unsigned int)
 Set the (tree-level) order in $g_{EM}$ in which this matrix element should be evaluated.
 
virtual unsigned int orderInGem () const =0
 Return the (tree-level) order in $g_{EM}$ in which this matrix element is given.
 
Ptr< StandardModel >::tcptr standardModel ()
 Return the Herwig StandardModel object.
 
virtual bool hasInitialAverage () const
 Return true, if this amplitude already includes averaging over incoming parton's quantum numbers.
 
virtual bool hasFinalStateSymmetry () const
 Return true, if this amplitude already includes symmetry factors for identical outgoing particles.
 
virtual bool isOLPTree () const
 Return true, if this amplitude is handled by a BLHA one-loop provider.
 
virtual bool isOLPLoop () const
 Return true, if this amplitude is handled by a BLHA one-loop provider.
 
virtual bool needsOLPCorrelators () const
 Return true, if colour and spin correlated matrix elements should be ordered from the OLP.
 
virtual void olpOrderFileHeader (ostream &) const
 Write the order file header.
 
virtual void olpOrderFileProcesses (ostream &, const map< pair< Process, int >, int > &procs) const
 Write the order file process list.
 
virtual void signOLP (const string &, const string &)
 Start the one loop provider, if appropriate, giving order and contract files.
 
virtual void startOLP (const string &, int &status)
 Start the one loop provider, if appropriate.
 
virtual bool startOLP (const map< pair< Process, int >, int > &procs)
 Start the one loop provider, if appropriate. More...
 
virtual bool isExternal () const
 Return true, if this amplitude needs to initialize an external code.
 
virtual bool initializeExternal ()
 Initialize this amplitude.
 
virtual int externalId (const cPDVector &)
 Return a generic process id for the given process.
 
const map< long, Energy > & reshuffleMasses () const
 Return the map with masses to be used for amplitude evaluation.
 
void checkReshuffling (Ptr< MatchboxPhasespace >::tptr)
 Check if reshuffling is needed at all.
 
virtual bool hasAmplitudeMomenta () const
 Return true, if this amplitude makes use of amplitudeMomenta.
 
Colour basis.
virtual Ptr< ColourBasis >::tptr colourBasis () const
 Return the colour basis.
 
virtual bool haveColourFlows () const
 Return true, if the colour basis is capable of assigning colour flows.
 
virtual Selector< const ColourLines * > colourGeometries (tcDiagPtr diag) const
 Return a Selector with possible colour geometries for the selected diagram weighted by their relative probabilities.
 
const string & colourOrderingString (size_t id) const
 Return an ordering identifier for the current subprocess and colour absis tensor index.
 
const set< vector< size_t > > & colourOrdering (size_t id) const
 Return an ordering identifier for the current subprocess and colour absis tensor index.
 
Phasespace point, crossing and helicities
virtual void setXComb (tStdXCombPtr xc)
 Set the xcomb object.
 
Lorentz5Momentum amplitudeMomentum (int) const
 Return the momentum as crossed appropriate for this amplitude.
 
virtual void fillCrossingMap (size_t shift=0)
 Perform a normal ordering of external legs and fill the crossing information as. More...
 
virtual set< vector< int > > generateHelicities () const
 Generate the helicity combinations.
 
virtual vector< unsigned int > physicalHelicities (const vector< int > &) const
 Return the helicity combination of the physical process in the conventions used by the spin correlation algorithm.
 
Tree-level amplitudes
virtual void prepareAmplitudes (Ptr< MatchboxMEBase >::tcptr)
 Calculate the tree level amplitudes for the phasespace point stored in lastXComb.
 
virtual double me2 () const
 Return the matrix element squared.
 
double colourCharge (tcPDPtr) const
 Return the colour charge of a given leg.
 
double largeNColourCharge (tcPDPtr) const
 Return the large-N charge of a given leg.
 
virtual double largeNME2 (Ptr< ColourBasis >::tptr largeNBasis) const
 Return the largeN matrix element squared.
 
virtual double colourCorrelatedME2 (pair< int, int > ij) const
 Return the colour correlated matrix element.
 
virtual double largeNColourCorrelatedME2 (pair< int, int > ij, Ptr< ColourBasis >::tptr largeNBasis) const
 Return the large-N colour correlated matrix element.
 
bool trivialColourLegs () const
 Return true if trivial colour configuration.
 
virtual bool canFillRhoMatrix () const
 Return true, if this amplitude is capable of consistently filling the rho matrices for the spin correllations.
 
virtual LorentzVector< ComplexplusPolarization (const Lorentz5Momentum &p, const Lorentz5Momentum &n, int id=-1) const
 Return a positive helicity polarization vector for a gluon of momentum p (with reference vector n) to be used when evaluating spin correlations.
 
virtual double spinColourCorrelatedME2 (pair< int, int > emitterSpectator, const SpinCorrelationTensor &c) const
 Return the colour and spin correlated matrix element.
 
virtual double spinCorrelatedME2 (pair< int, int > emitterSpectator, const SpinCorrelationTensor &c) const
 Return the spin correlated matrix element.
 
virtual bool treeAmplitudes () const
 Return true, if tree-level contributions will be evaluated at amplitude level.
 
virtual Complex evaluate (size_t, const vector< int > &, Complex &)
 Evaluate the amplitude for the given colour tensor id and helicity assignment.
 
One-loop amplitudes
virtual Ptr< MatchboxAmplitude >::tptr oneLoopAmplitude () const
 Return the one-loop amplitude, if applicable.
 
virtual void disableOneLoop ()
 Diasble one-loop functionality if not needed.
 
virtual bool haveOneLoop () const
 Return true, if this amplitude is capable of calculating one-loop (QCD) corrections.
 
virtual bool onlyOneLoop () const
 Return true, if this amplitude only provides one-loop (QCD) corrections.
 
virtual bool oneLoopAmplitudes () const
 Return true, if one-loop contributions will be evaluated at amplitude level.
 
virtual bool isDR () const
 Return true, if one loop corrections have been calculated in dimensional reduction. More...
 
virtual bool isDRbar () const
 Return true, if the amplitude is DRbar renormalized, otherwise MSbar is assumed.
 
virtual bool isCS () const
 Return true, if one loop corrections are given in the conventions of the integrated dipoles.
 
virtual bool isBDK () const
 Return true, if one loop corrections are given in the conventions of BDK.
 
virtual bool isExpanded () const
 Return true, if one loop corrections are given in the conventions of everything expanded.
 
virtual Energy2 mu2 () const
 Return the value of the dimensional regularization parameter. More...
 
virtual bool hasRunningAlphaS () const
 Indicate that this amplitude is running alphas by itself.
 
virtual bool hasRunningAlphaEW () const
 Indicate that this amplitude is running alphaew by itself.
 
virtual double oneLoopDoublePole () const
 If defined, return the coefficient of the pole in epsilon^2.
 
virtual double oneLoopSinglePole () const
 If defined, return the coefficient of the pole in epsilon.
 
virtual void prepareOneLoopAmplitudes (Ptr< MatchboxMEBase >::tcptr)
 Calculate the one-loop amplitudes for the phasespace point stored in lastXComb, if provided.
 
virtual double oneLoopInterference () const
 Return the one-loop/tree interference.
 
virtual Complex evaluateOneLoop (size_t, const vector< int > &)
 Evaluate the amplitude for the given colour tensor id and helicity assignment.
 
Caching and helpers to setup amplitude objects.
virtual void flushCaches ()
 Flush all cashes.
 
Ptr< MatchboxAmplitude >::ptr cloneMe () const
 Clone this amplitude.
 
virtual void cloneDependencies (const std::string &prefix="", bool slim=false)
 Clone the dependencies, using a given prefix.
 
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 ThePEG::Amplitude
Amplitudeoperator= (const Amplitude &)=delete
 
- 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 IBPtr fullclone () const
 
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 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
 
- Public Member Functions inherited from Herwig::LastMatchboxXCombInfo
 LastMatchboxXCombInfo ()
 Default constructor.
 
MatchboxXCombDatalastMatchboxXComb () const
 Return a pointer to the last selected XComb.
 
MatchboxXCombDatalastHeadMatchboxXComb () const
 If the last selected XComb object belongs to a group of XComb's return a pointer to the head XComb object for this group.
 
const vector< int > & crossingMap () const
 The crossing information as filled by the last call to fillCrossingMap()
 
const map< size_t, size_t > & amplitudeToColourMap () const
 The colour crossing information as filled by the last call to fillCrossingMap()
 
const map< size_t, size_t > & colourToAmplitudeMap () const
 The colour crossing information as filled by the last call to fillCrossingMap()
 
double crossingSign () const
 The crossing sign as filled by the last call to fillCrossingMap()
 
Energy2 lastRenormalizationScale () const
 The last renormalization scale.
 
const cPDVectoramplitudePartonData () const
 The amplitude parton data.
 
const vector< Lorentz5Momentum > & amplitudeMomenta () const
 The crossed momenta.
 
bool calculateTreeAmplitudes () const
 True, if the the tree level amplitudes need to be calculated.
 
const map< vector< int >, CVector > & lastAmplitudes () const
 The amplitude values which have been contributing to the last call of prepareAmplitudes.
 
const map< vector< int >, CVector > & lastLargeNAmplitudes () const
 The leading N amplitude values which have been contributing to the last call of prepareAmplitudes.
 
bool calculateOneLoopAmplitudes () const
 True, if the the one-loop amplitudes need to be calculated.
 
const map< vector< int >, CVector > & lastOneLoopAmplitudes () const
 The one-loop amplitude values which have been contributing to the last call of prepareAmplitudes.
 
bool calculateTreeME2 () const
 True, if the tree-level matrix element squared needs to be calculated.
 
double lastTreeME2 () const
 The last tree-level matrix element squared.
 
bool calculateLargeNME2 () const
 True, if the tree-level matrix element squared needs to be calculated.
 
double lastLargeNME2 () const
 The last tree-level matrix element squared.
 
bool calculateOneLoopInterference () const
 True, if the one-loop/tree-level interference. More...
 
double lastOneLoopInterference () const
 The last one-loop/tree-level interference.
 
bool calculateOneLoopPoles () const
 True, if the one-loop/tree-level interference. More...
 
pair< double, double > lastOneLoopPoles () const
 The last one-loop/tree-level interference.
 
bool calculateColourCorrelator (const pair< int, int > &ij) const
 True, if the indexed colour correlated matrix element needs to be calculated.
 
double lastColourCorrelator (const pair< int, int > &ij) const
 The colour correlated matrix element.
 
bool calculateLargeNColourCorrelator (const pair< int, int > &ij) const
 True, if the indexed large-N colour correlated matrix element needs to be calculated.
 
double lastLargeNColourCorrelator (const pair< int, int > &ij) const
 The large-N colour correlated matrix element.
 
bool calculateColourSpinCorrelator (const pair< int, int > &ij) const
 True, if the indexed colour/spin correlated matrix element needs to be calculated.
 
Complex lastColourSpinCorrelator (const pair< int, int > &ij) const
 The colour/spin correlated matrix element.
 
bool calculateSpinCorrelator (const pair< int, int > &ij) const
 True, if the indexed spin correlated matrix element needs to be calculated.
 
Complex lastSpinCorrelator (const pair< int, int > &ij) const
 The spin correlated matrix element.
 
unsigned int nLight () const
 Return the number of light flavours to be considered for this process.
 
vector< long > nLightJetVec () const
 Return the vector that contains the PDG ids of the light flavours, which are contained in the jet particle group.
 
vector< long > nHeavyJetVec () const
 Return the vector that contains the PDG ids of the heavy flavours, which are contained in the jet particle group.
 
vector< long > nLightProtonVec () const
 Return the vector that contains the PDG ids of the light flavours, which are contained in the proton particle group.
 
size_t colourBasisDim () const
 Get the dimensionality of the colour basis for this process.
 
int nDimPhasespace () const
 Return the number of degrees of freedom required by the phase space generator.
 
int nDimAmplitude () const
 Return the number of degrees of freedom required by the amplitude.
 
int nDimInsertions () const
 Return the number of degrees of freedom required by the insertion operators.
 
const vector< double > & amplitudeRandomNumbers () const
 Get the additional random numbers required by the amplitude.
 
const vector< double > & insertionRandomNumbers () const
 Get the additional random numbers required by the insertion operator.
 
const map< int, double > & diagramWeights () const
 Return the diagram weights indexed by diagram id.
 
const set< pair< size_t, size_t > > & singularLimits () const
 Return the singular limits.
 
const set< pair< size_t, size_t > >::const_iterator & lastSingularLimit () const
 Return the last matched singular limit.
 
Ptr< StandardModel >::tcptr hwStandardModel () const
 Get the Herwig StandardModel object.
 
double symmetryFactor () const
 Return the symmetry factor.
 
const vector< int > & olpId () const
 Return the OLP process id.
 
double * olpMomenta () const
 Return the olp momentum vector.
 
void fillOLPMomenta (const vector< Lorentz5Momentum > &mm, const cPDVector &mePartonData, const map< long, Energy > &reshuffleMap) const
 Fill the olp momentum vector.
 

Static Public Member Functions

static void Init ()
 The standard Init function used to initialize the interfaces. More...
 
- Static Public Member Functions inherited from ThePEG::Amplitude
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

Standard Interfaced functions.
virtual void doinit ()
 Initialize this object after the setup phase before saving an EventGenerator to disk. More...
 
virtual void doinitrun ()
 Initialize this object. More...
 
- Protected Member Functions inherited from ThePEG::Interfaced
void reporeg (IBPtr object, string name) const
 
bool setDefaultReference (PtrT &ptr, string classname, string objectname)
 
 Interfaced (const string &newName)
 
 Interfaced (const Interfaced &i)
 
void setGenerator (tEGPtr generator)
 
- Protected Member Functions inherited from ThePEG::InterfacedBase
virtual IBPtr clone () const=0
 
 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 &)
 
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)
 
- Protected Member Functions inherited from Herwig::LastMatchboxXCombInfo
vector< int > & crossingMap ()
 The crossing information as filled by the last call to fillCrossingMap()
 
map< size_t, size_t > & amplitudeToColourMap ()
 The colour crossing information as filled by the last call to fillCrossingMap()
 
map< size_t, size_t > & colourToAmplitudeMap ()
 The colour crossing information as filled by the last call to fillCrossingMap()
 
void crossingSign (double c)
 The crossing sign as filled by the last call to fillCrossingMap()
 
void lastRenormalizationScale (Energy2 lrs)
 The last renormalization scale.
 
cPDVectoramplitudePartonData ()
 The amplitude parton data.
 
vector< Lorentz5Momentum > & amplitudeMomenta ()
 The crossed momenta.
 
void haveTreeAmplitudes (bool f=true)
 True, if the the tree level amplitudes need to be calculated.
 
map< vector< int >, CVector > & lastAmplitudes ()
 The amplitude values which have been contributing to the last call of prepareAmplitudes.
 
map< vector< int >, CVector > & lastLargeNAmplitudes ()
 The leading N amplitude values which have been contributing to the last call of prepareAmplitudes.
 
void haveOneLoopAmplitudes (bool f=true)
 True, if the the one-loop amplitudes need to be calculated.
 
map< vector< int >, CVector > & lastOneLoopAmplitudes ()
 The one-loop amplitude values which have been contributing to the last call of prepareAmplitudes.
 
void lastTreeME2 (double v) const
 The last tree-level matrix element squared.
 
void lastLargeNME2 (double v) const
 The last tree-level matrix element squared.
 
void lastOneLoopInterference (double v) const
 The last one-loop/tree-level interference.
 
void lastOneLoopPoles (pair< double, double > v) const
 The last one-loop/tree-level interference.
 
void lastColourCorrelator (const pair< int, int > &ij, double v) const
 The colour correlated matrix element.
 
void lastLargeNColourCorrelator (const pair< int, int > &ij, double v) const
 The large-N colour correlated matrix element.
 
void lastColourSpinCorrelator (const pair< int, int > &ij, Complex v) const
 The colour/spin correlated matrix element.
 
void lastSpinCorrelator (const pair< int, int > &ij, Complex v) const
 The spin correlated matrix element.
 
void nLight (unsigned int n)
 Set the number of light flavours to be considered for this process.
 
void nLightJetVec (int n)
 Set the elements of the vector that contains the PDG ids of the light flavours, which are contained in the jet particle group.
 
void nHeavyJetVec (int n)
 Set the elements of the vector that contains the PDG ids of the heavy flavours, which are contained in the jet particle group.
 
void nLightProtonVec (int n)
 Set the elements of the vector that contains the PDG ids of the light flavours, which are contained in the proton particle group.
 
void colourBasisDim (size_t d)
 Set the dimensionality of the colour basis for this process.
 
void nDimPhasespace (int d)
 Set the number of degrees of freedom required by the phase space generator.
 
void nDimAmplitude (int d)
 Set the number of degrees of freedom required by the amplitude.
 
void nDimInsertions (int d)
 Set the number of degrees of freedom required by the insertion operators.
 
vector< double > & amplitudeRandomNumbers ()
 Access the additional random numbers required by the amplitude.
 
vector< double > & insertionRandomNumbers ()
 Access the additional random numbers required by the insertion operator.
 
map< int, double > & diagramWeights ()
 Access the diagram weights indexed by diagram id.
 
set< pair< size_t, size_t > > & singularLimits ()
 Access the singular limits.
 
set< pair< size_t, size_t > >::const_iterator & lastSingularLimit ()
 Access the last matched singular limit.
 
void hwStandardModel (Ptr< StandardModel >::tcptr sm)
 Set the Herwig StandardModel object.
 
void symmetryFactor (double f) const
 Set the symmetry factor.
 
void olpId (int pType, int id)
 Set the OLP process id.
 
void lastMatchboxXComb (tStdXCombPtr xc)
 Set the XComb pointer cast to MatchboxXComb.
 

Private Member Functions

void doGenerateHelicities (set< vector< int > > &res, vector< int > &current, size_t pos) const
 Recursively generate helicities.
 
string doReshuffle (string)
 A command to fill the reshuffle mass map.
 
string doMassless (string)
 A command to fill the reshuffle mass map.
 
string doOnShell (string)
 A command to fill the reshuffle mass map.
 
string doClearReshuffling (string)
 Clear the reshuffling map.
 
MatchboxAmplitudeoperator= (const MatchboxAmplitude &)=delete
 The assignment operator is private and must never be called. More...
 

Private Attributes

Ptr< ColourBasis >::ptr theColourBasis
 The colour basis implementation to be used.
 
int theCleanupAfter
 The number of points after which helicity combinations wil be cleaned up.
 
int treeLevelHelicityPoints
 The number of points that are calculated before a certain helicity is excluded. More...
 
int oneLoopHelicityPoints
 The number of points that are calculated before a certain helicity is excluded. More...
 
map< long, Energy > theReshuffleMasses
 The map with masses to be used for amplitude evaluation.
 
bool theTrivialColourLegs
 True if trivial colour configuration.
 

Additional Inherited Members

- 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 Public Attributes inherited from ThePEG::Amplitude
static AbstractNoPIOClassDescription< AmplitudeinitAmplitude
 
- 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
 
- Protected Attributes inherited from Herwig::LastMatchboxXCombInfo
MatchboxXCombDatatheLastMatchboxXComb
 The XComb pointer cast to MatchboxXComb.
 
MatchboxXCombDatatheLastHeadMatchboxXComb
 The head XComb pointer cast to MatchboxXComb.
 

Detailed Description

MatchboxAmplitude is the base class for amplitude implementations inside Matchbox.

Author
Simon Platzer
See also
The interfaces defined for MatchboxAmplitude.

Definition at line 108 of file MatchboxAmplitude.h.

Member Function Documentation

◆ doinit()

◆ doinitrun()

◆ fillCrossingMap()

virtual void Herwig::MatchboxAmplitude::fillCrossingMap ( size_t  shift = 0)
virtual

Perform a normal ordering of external legs and fill the crossing information as.

This default implementation sorts lexicographically in (abs(colour)/spin/abs(charge)), putting pairs of particles/anti-particles where possible.

Reimplemented in Herwig::MatchboxHybridAmplitude.

◆ Init()

static void Herwig::MatchboxAmplitude::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.

◆ isDR()

virtual bool Herwig::MatchboxAmplitude::isDR ( ) const
inlinevirtual

Return true, if one loop corrections have been calculated in dimensional reduction.

Otherwise conventional dimensional regularization is assumed. Note that renormalization is always assumed to be MSbar.

Reimplemented in Herwig::MatchboxHybridAmplitude, Herwig::MadGraphAmplitude, Herwig::GoSamAmplitude, and Herwig::VBFNLOAmplitude.

Definition at line 488 of file MatchboxAmplitude.h.

◆ mu2()

◆ operator=()

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

The assignment operator is private and must never be called.

In fact, it should not even be implemented.

◆ persistentInput()

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

Function used to write out object persistently.

Parameters
osthe persistent output stream written to.

◆ startOLP()

virtual bool Herwig::MatchboxAmplitude::startOLP ( const map< pair< Process, int >, int > &  procs)
virtual

Start the one loop provider, if appropriate.

This default implementation writes an BLHA 2.0 order file and starts the OLP

Reimplemented in Herwig::MatchboxHybridAmplitude, Herwig::OpenLoopsAmplitude, Herwig::GoSamAmplitude, Herwig::VBFNLOAmplitude, and Herwig::NJetsAmplitude.

◆ value()

virtual Complex Herwig::MatchboxAmplitude::value ( const tcPDVector particles,
const vector< Lorentz5Momentum > &  momenta,
const vector< int > &  helicities 
)
virtual

Return the amplitude.

Needs to be implemented from ThePEG::Amplitude but is actually ill-defined, as colours of the external particles are not specified. To this extent, this implementation just asserts.

Implements ThePEG::Amplitude.

Member Data Documentation

◆ oneLoopHelicityPoints

int Herwig::MatchboxAmplitude::oneLoopHelicityPoints
private

The number of points that are calculated before a certain helicity is excluded.

Needed in pp->V

Definition at line 660 of file MatchboxAmplitude.h.

◆ treeLevelHelicityPoints

int Herwig::MatchboxAmplitude::treeLevelHelicityPoints
private

The number of points that are calculated before a certain helicity is excluded.

Needed in pp->V

Definition at line 654 of file MatchboxAmplitude.h.


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