PYTHIA  8.312
Public Member Functions | Public Attributes | List of all members
DireSplittingEW Class Reference
Inheritance diagram for DireSplittingEW:
DireSplittingQCD DireSplitting Dire_fsr_ew_H2AA Dire_fsr_ew_H2GG Dire_fsr_ew_H2WW Dire_fsr_ew_Q2QZ Dire_fsr_ew_Q2ZQ Dire_fsr_ew_W2QQ1 Dire_fsr_ew_W2QQ2 Dire_fsr_ew_W2WA Dire_fsr_ew_Z2QQ1 Dire_fsr_ew_Z2QQ2 Dire_isr_ew_Q2QZ

Public Member Functions

 DireSplittingEW (string idIn, int softRS, Settings *settings, ParticleData *particleData, Rndm *rndm, BeamParticle *beamA, BeamParticle *beamB, CoupSM *coupSM, Info *info, DireInfo *direInfo)
 Constructor and destructor.
 
void init ()
 The SplittingEW class. More...
 
double aem2Pi (double pT2)
 
bool useFastFunctions ()
 
virtual vector< int > radAndEmt (int idDaughter, int)
 
virtual int nEmissions ()
 
virtual bool isPartial ()
 
virtual bool canUseForBranching ()
 
virtual int couplingType (int, int)
 
virtual double coupling (double=0., double=0., double=0., double=-1., pair< int, bool >=pair< int, bool >(), pair< int, bool >=pair< int, bool >())
 
virtual double couplingScale2 (double=0., double=0., double=0., pair< int, bool >=pair< int, bool >(), pair< int, bool >=pair< int, bool >())
 
- Public Member Functions inherited from DireSplittingQCD
 DireSplittingQCD (string idIn, int softRS, Settings *settings, ParticleData *particleData, Rndm *rndm, BeamParticle *beamA, BeamParticle *beamB, CoupSM *coupSM, Info *info, DireInfo *direInfo)
 Constructor and destructor.
 
void init ()
 
double getNF (double pT2)
 AUXILIARY FUNCTIONS. More...
 
double GammaQCD2 (double NF=5.)
 
double GammaQCD3 (double NF=5.)
 
double betaQCD0 (double NF=5.)
 
double betaQCD1 (double NF=5.)
 
double betaQCD2 (double NF=5.)
 
double as2Pi (double pT2, int orderNow=-1, double renormMultFacNow=-1.)
 
double softRescaleInt (int order)
 
double softRescaleDiff (int order, double pT2, double renormMultFacNow=-1.)
 
double beta0Endpoint (int order, double m2dip, double pT2, double z, double renormMultFacNow=-1.)
 
double polevl (double x, double *coef, int N)
 Helper function to calculate dilogarithm.
 
double DiLog (double x)
 Function to calculate dilogarithm.
 
vector< int > sharedColor (const Event &event, int iRad, int iRec)
 
bool hasSharedColor (const Event &event, int iRad, int iRec)
 
int findCol (int col, vector< int > iExc, const Event &, int type)
 
bool useFastFunctions ()
 
virtual double getJacobian (const Event &=Event(), PartonSystems *partonSystems=0)
 
virtual unordered_map< string, double > getPhasespaceVars (const Event &=Event(), PartonSystems *=0)
 
double sCoef (int powz)
 
double sExp (int powz)
 
double kCoef (int powz)
 
double kExp (int powz)
 
double cCoef (int powz)
 
double cExp (int powz)
 
double fCoef ()
 
bool hasMECBef (const Event &state, double pT2)
 
bool hasMECAft (const Event &state, double pT2)
 
- Public Member Functions inherited from DireSplitting
 DireSplitting ()
 Constructor and destructor.
 
 DireSplitting (string idIn, int softRS, Settings *settings, ParticleData *particleData, Rndm *rndm, BeamParticle *beamA, BeamParticle *beamB, CoupSM *coupSMPtrIn, Info *infoPtrIn, DireInfo *direInfo)
 
void init ()
 The Splitting class.
 
bool is (ulong pattern)
 
string name ()
 
virtual bool canRadiate (const Event &, pair< int, int >, unordered_map< string, bool >=unordered_map< string, bool >(), Settings *=NULL, PartonSystems *=NULL, BeamParticle *=NULL)
 
virtual bool aboveCutoff (double, const Particle &, const Particle &, int, PartonSystems *=NULL)
 Discard below the cut-off for the splitting.
 
virtual bool canRadiate (const Event &, int, int, Settings *=NULL, PartonSystems *=NULL, BeamParticle *=NULL)
 
virtual int kinMap ()
 
virtual int motherID (int)
 Return id of mother after splitting.
 
virtual int sisterID (int)
 Return id of emission.
 
virtual vector< pair< int, int > > radAndEmtCols (int, int, Event)
 
virtual bool swapRadEmt ()
 
virtual bool isSymmetric (const Particle *=NULL, const Particle *=NULL)
 
virtual vector< int > recPositions (const Event &, int, int)
 
virtual int radBefID (int, int)
 Return id of recombined radiator (before splitting!)
 
virtual pair< int, int > radBefCols (int, int, int, int)
 Return colours of recombined radiator (before splitting!)
 
virtual double gaugeFactor (int, int)
 Return color factor for splitting.
 
virtual double symmetryFactor (int, int)
 Return symmetry factor for splitting.
 
virtual double zSplit (double, double, double)
 Pick z for new splitting.
 
virtual double overestimateInt (double, double, double, double, int=-1)
 New overestimates, z-integrated versions.
 
virtual double overestimateDiff (double, double, int=-1)
 Return kernel for new splitting.
 
virtual double getKernel (string="")
 Functions to store and retrieve all the variants of the kernel.
 
virtual unordered_map< string, double > getKernelVals ()
 
virtual void clearKernels ()
 
virtual bool calc (const Event &=Event(), int=-1)
 Functions to calculate the kernel from SplitInfo information.
 
void setTimesPtr (shared_ptr< DireTimes > fsrIn)
 
void setTimesDecPtr (shared_ptr< DireTimes > fsrIn)
 
void setSpacePtr (shared_ptr< DireSpace > isrIn)
 
virtual bool allow_z_endpoint_for_kinematics ()
 Treatment of additional virtual corrections.
 
virtual bool allow_pT2_endpoint_for_kinematics ()
 
virtual bool allow_sai_endpoint_for_kinematics ()
 
virtual bool allow_xa_endpoint_for_kinematics ()
 
virtual void try_z_endpoint ()
 Functions to set if kernel should contribute to a kinematical endpoint.
 
virtual void try_pT2_endpoint ()
 
virtual void try_sai_endpoint ()
 
virtual void try_xa_endpoint ()
 
virtual bool is_z_endpoint ()
 Return endpoint information.
 
virtual bool is_pT2_endpoint ()
 
virtual bool is_sai_endpoint ()
 
virtual bool is_xa_endpoint ()
 
virtual double tdire_ff (double, double t, double)
 Functions to calculate Dire variables from the evolution variables.
 
virtual double zdire_ff (double z, double, double)
 
virtual double tdire_fi (double, double t, double)
 
virtual double zdire_fi (double z, double, double)
 
virtual double tdire_if (double, double t, double)
 
virtual double zdire_if (double z, double, double)
 
virtual double tdire_ii (double, double t, double)
 
virtual double zdire_ii (double z, double, double)
 
virtual void storeOverhead (double pT2, double x, int radid, int nf, double val)
 
virtual double overhead (double pT2, int idd, int nf)
 

Public Attributes

double mZ
 Z0 and W+- properties needed for gamma/Z0 mixing and weak showers.
 
double gammaZ
 
double thetaW
 
double mW
 
double gammaW
 
double aem0
 
double enhance
 
bool doQEDshowerByQ
 
bool doQEDshowerByL
 
AlphaEM alphaEM
 
- Public Attributes inherited from DireSplittingQCD
double CA
 VARIABLES.
 
double TR
 
double CF
 
double pTmin
 
double pT2minVariations
 
int NF_qcd_fsr
 
int orderSave
 
bool usePDFalphas
 
bool doVariations
 
bool doCorrelations
 
bool doMECs
 
double alphaSorder
 
double alphaS2pi
 
AlphaStrong alphaS
 
int asSchemeISR
 
int asSchemeFSR
 
bool useBackboneGluons
 
bool doGeneralizedKernel
 
- Public Attributes inherited from DireSplitting
double renormMultFac
 
string id
 
int correctionOrder
 
Settings * settingsPtr
 
ParticleData * particleDataPtr
 
Rndm * rndmPtr
 
BeamParticle * beamAPtr
 
BeamParticle * beamBPtr
 
CoupSM * coupSMPtr
 
Info * infoPtr
 
DireInfo * direInfoPtr
 
bool is_qcd
 Some short-cuts and string hashes to help avoid string comparisons.
 
bool is_qed
 
bool is_ewk
 
bool is_fsr
 
bool is_isr
 
bool is_dire
 
ulong nameHash
 
unordered_map< string, double > kernelVals
 
DireSplitInfo splitInfo
 
shared_ptr< DireSpace > isr
 
shared_ptr< DireTimes > fsr
 
shared_ptr< DireTimes > fsrDec
 
multimap< double, OverheadInfo > overhead_map
 

Additional Inherited Members

- Static Public Attributes inherited from DireSplittingQCD
static const double SMALL_TEVOL = 2.0
 The SplittingQCD class.
 

Member Function Documentation

double aem2Pi ( double  pT2)

Function to calculate the correct running coupling/2*Pi value, including renormalisation scale variations + threshold matching.

Function to calculate the correct alphaem/2*Pi value, including renormalisation scale variations + threshold matching.

Get alphaEM(k*pT^2) and subtractions.

Done.

virtual double coupling ( double  = 0.,
double  = 0.,
double  = 0.,
double  = -1.,
pair< int, bool >  = pair<int,bool>(),
pair< int, bool >  = pair<int,bool>() 
)
inlinevirtual

Return the value of the coupling that should be used for this branching. Note that the last input allows easy access to the PS evolution variable. return values -1 –> Coupling value not defined. double > 0 –> Value to be used for this branching.

Reimplemented from DireSplittingQCD.

Reimplemented in Dire_fsr_ew_H2GG, and Dire_fsr_ew_H2AA.

virtual int couplingType ( int  ,
int   
)
inlinevirtual

Return an identifier for the interaction that causes the branching. return values -1 –> Type not defined. 1 –> QCD splitting (i.e. proportional to alphaS) 2 –> QED splitting (i.e. proportional to alphaEM) 3 –> EW splitting (i.e. proportional to sinThetaW) 4 –> Yukawa splitting (i.e. proportional to y)

Reimplemented from DireSplittingQCD.

Reimplemented in Dire_fsr_ew_H2GG, and Dire_fsr_ew_H2AA.

void init ( )

The SplittingEW class.

Parameters of alphaEM.

Initialize alphaEM.

Z0 and W+- properties needed for gamma/Z0 mixing and weak showers.

virtual vector<int> radAndEmt ( int  ,
int   
)
inlinevirtual

Return a pair of ids for the radiator and emission after the splitting.

Reimplemented from DireSplittingQCD.

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