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PYTHIA
8.311
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Class AntQGEmitFF, final-final antenna function. More...
#include <VinciaAntennaFunctions.h>
Public Member Functions | |
| virtual string | vinciaName () const |
| Names (remember to redefine both for each inherited class). | |
| virtual int | idA () const |
| Parton types (AB -> 0i 1j 2k): needed by soft- and collinear-limit checks. | |
| virtual int | idB () const |
| virtual int | id1 () const |
| virtual double | antFun (vector< double > invariants, vector< double > mNew, vector< int > helBef, vector< int > helNew) |
| The antenna function [GeV^-2]. More... | |
| virtual double | AltarelliParisi (vector< double > invariants, vector< double >, vector< int > helBef, vector< int > helNew) |
| Function to give Altarelli-Parisi limits of this antenna. More... | |
 Public Member Functions inherited from AntennaFunction | |
| AntennaFunction ()=default | |
| Constructor. | |
| virtual | ~AntennaFunction () |
| Destructor. | |
| virtual bool | init () |
| Default initialization. More... | |
| virtual string | baseName () const |
| Construct baseName from idA, idB, and id1. | |
| virtual string | humanName () const |
| Wrapper that can modify baseName to more human readable form if required. | |
| virtual bool | check () |
| Function to check singularities, positivity, etc. More... | |
| virtual void | initMasses (vector< double > *masses) |
| Method to intialise mass values. | |
| virtual int | initHel (vector< int > *helBef, vector< int > *helNew) |
| Method to initialise internal helicity variables. More... | |
| double | antFun (vector< double > invariants, vector< double > masses) |
| Wrapper for helicity-summed/averaged antenna function. | |
| double | antFun (vector< double > invariants) |
| Wrapper for massless, helicity-summed/averaged antenna function. | |
| double | AltarelliParisi (vector< double > invariants, vector< double > masses) |
| Wrapper without helicity assignments. | |
| double | AltarelliParisi (vector< double > invariants) |
| Wrapper for massless helicity-summed/averaged DGLAP kernels. | |
| void | initPtr (Info *infoPtrIn, DGLAP *dglapPtrIn) |
| Initialize pointers. More... | |
| double | chargeFac () |
| Get parameters. | |
| int | kineMap () |
| double | alpha () |
| double | sectorDamp () |
| double | zA (vector< double > invariants) |
| Functions to get Altarelli-Parisi energy fractions from invariants. | |
| double | zB (vector< double > invariants) |
| string | id2str (int id) const |
| Auxiliary function to translate an ID code to a string. More... | |
Additional Inherited Members | |
| Protected Attributes inherited from AntennaFunction | |
| bool | isInitPtr {false} |
| Is initialized. | |
| bool | isInit {false} |
| double | chargeFacSav {0.0} |
| Charge factor, kinematics map, and subleading-colour treatment. | |
| int | kineMapSav {0} |
| int | modeSLC {-1} |
| bool | sectorShower {false} |
| double | alphaSav {0.0} |
| The alpha collinear-partitioning parameter. | |
| double | sectorDampSav {0.0} |
| The sector-shower collinear dampening parameter. | |
| double | term {} |
| Shorthand for commonly used variable(s). | |
| double | preFacFiniteTermSav {0.0} |
| double | antMinSav {0.0} |
| bool | isMinVar {} |
| double | mi {0.0} |
| Variables for internal storage of masses and helicities. | |
| double | mj {0.0} |
| double | mk {0.0} |
| int | hA {9} |
| int | hB {9} |
| int | hi {9} |
| int | hj {9} |
| int | hk {9} |
| map< int, bool > | LH {{9, true}, {1, false}, {-1, true}} |
| map< int, bool > | RH {{9, true}, {1, true}, {-1, false}} |
| int | verbose {1} |
| Verbosity level. | |
| Info * | infoPtr {} |
| Pointers to Pythia8 classes. | |
| ParticleData * | particleDataPtr {} |
| Settings * | settingsPtr {} |
| Rndm * | rndmPtr {} |
| Logger * | loggerPtr {} |
| DGLAP * | dglapPtr {} |
| Pointer to VINCIA DGLAP class. | |
| vector< double > | mDum {0, 0, 0, 0} |
| Dummy vectors. | |
| vector< int > | hDum {9, 9, 9, 9} |
Class AntQGEmitFF, final-final antenna function.
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virtual |
Function to give Altarelli-Parisi limits of this antenna.
Compute (sum of) DGLAP kernel(s)/Q^2
Implements AntennaFunction.
Reimplemented in AntGQEmitFFsec, and AntGQEmitFF.
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virtual |
The antenna function [GeV^-2].
Class AntQGEmitFF, final-final antenna function.
The antenna function [GeV^-2].
Make sure we have enough invariants.
Initialise masses and helicities. Return 0 for unphysical helicities.
Check helicity conservation for massless partons.
Dimensionless parameters: yij = 2pi.pj / sIK.
Shorthands.
Do helicity sum.
(++ and –) parents.
++ > +++ && – > — antennae (MHV).
++ > +-+ && – > -+- antennae (NMHV).
++ > -++ && – > +– antennae (mI != 0).
(+- and -+) parents
+- > ++- && -+ > –+ antennae.
+- > +– && -+ > -++ antennae.
+- > -+- && -+ > +-+ antennae (mI != 0).
Subleading colour correction. Note: has to be applied to sector antennae after symmetrisation!
Return helicity sum, averaged over initial helicities.
Implements AntennaFunction.
Reimplemented in AntGQEmitFFsec, AntQGEmitFFsec, and AntGQEmitFF.
1.8.11
