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PYTHIA
8.316
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#include <SplittingsOnia.h>
Public Member Functions | |
| Split2g2QQbar3PJ1g (int stateIn, double ldmeIn, int spinIn, Info *infoPtrIn, AlphaStrong *alphaSPtrIn, set< double > &thresholds) | |
| Constructor. | |
| double | weight (const TimeDipoleEnd &dip) const override |
| Return the splitting weight. More... | |
| string | enhanceName () const override |
| Return the enhancement names. | |
 Public Member Functions inherited from SplitOnia | |
| SplitOnia (int idAIn, int idBIn, int idCIn, double ldmeIn, Info *infoPtrIn, AlphaStrong *alphaSPtrIn) | |
| Constructor that needs to be called by the subclass. | |
| virtual | ~SplitOnia ()=default |
| Virtual destructor. | |
| virtual double | overestimate (const TimeDipoleEnd &dip, double pT2Min, bool enh) |
| Calculate the splitting overestimate. More... | |
| virtual double | generateZ (const TimeDipoleEnd &) |
| bool | isActive (const TimeDipoleEnd &dip, int id, double m) |
| bool | isOctet () |
| Check if the emission is a colour octet state. | |
| bool | isEnhanced () |
| Check if the emission is enhanced. | |
| void | setEnhance (const unordered_map< string, double > &enhanceFSRs) |
| Set the enhancement factor. | |
| double | enhanceWeight () |
| Return the enhancement weight. | |
| virtual vector< int > | addEmitted (Event &, int, int, int, int, vector< TimeDipoleEnd > &) |
| Possibility to add more than one emitted particle. | |
| virtual void | updateDipole (TimeDipoleEnd &dip) |
| Update the dipole end with the generated values. | |
| bool | updateBranchVars (const TimeDipoleEnd *dip, Event &event, int &idRadIn, int &idEmtIn, int &colRadIn, int &acolRadIn, int &colEmtIn, int &acolEmtIn, int &appendEmtIn, double &pTorigIn, double &pTcorrIn, double &pzRadPlusEmtIn, double &pzRadIn, double &pzEmtIn, double &mRadIn, double &m2RadIn, double &mEmtIn) |
| Update the passed branching variables with the internal values. More... | |
Additional Inherited Members | |
| Protected Member Functions inherited from SplitOnia | |
| virtual bool | kinematics (const TimeDipoleEnd *dip, Event &event) |
| Update the internal kinematics. More... | |
| virtual double | integrateZ () const |
| void | setOctetID (int state, double mSplit, Info *infoPtr) |
| Set the colour octet ID and ensure in particle database. More... | |
| double | alphaScale (double m2, double pT2, double s) const |
| Return alpha_s at the requested scale. | |
| Protected Attributes inherited from SplitOnia | |
| int | idA |
| int | idB |
| int | idC |
| double | mA |
| double | mB |
| double | mC |
| double | m2A |
| double | m2B |
| double | m2C |
| double | enhance {1} |
| Enhancement, max value of alpha_S, and long-distance matrix element. | |
| double | ldme {-1} |
| double | cFac {0} |
| The constant and variable overestimate prefactors. | |
| double | oFac {0} |
| double | zMin {0} |
| The z limits used in the overestimated z-integral and generated z value. | |
| double | zMax {1} |
| double | zGen {0} |
| int | idRad {0} |
| IDs, colors, and number of emitters to append. | |
| int | idEmt {0} |
| int | colRad {0} |
| int | acolRad {0} |
| int | colEmt {0} |
| int | acolEmt {0} |
| int | appendEmt {1} |
| double | pTorig {0} |
| Transverse and longitudinal momentum, and masses. | |
| double | pTcorr {0} |
| double | pzRadPlusEmt {0} |
| double | pzRad {0} |
| double | pzEmt {0} |
| double | mRad {0} |
| double | m2Rad {0} |
| double | mEmt {0} |
| int | alphaMode {1} |
| Mode to evaluate the final alpha_s scale. | |
| Logger * | loggerPtr {} |
| Logger pointer. | |
| AlphaStrong * | alphaSPtr {} |
| The alphaS object in current use. | |
| Rndm * | rndmPtr {} |
| The random number generator in current use. | |
Splitting class for g -> QQbar[3PJ(1)] g (Q = c or b). The splitting function is taken from equations 8 - 12 of Bra94.
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overridevirtual |
Return the splitting weight.
Redefine z to match Bra94.
Mass squared of the onium state and system.
Check kinematic limits (extra cut-off for pT2 divergence).
The Jacobian going from ds to dpT2/pT2. This expression is always larger than mO^2.
Calculate equations 10 - 12 from Bra94.
Include the factor of 1/(s - 4mQ^2)^4 here to make dimensionless.
The s-dependent part of the fragmentation function.
Return the weight.
Implements SplitOnia.
1.8.11
