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PYTHIA
8.311
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The HVStringZ class is used to sample the HV fragmentation function f(z). More...
#include <HiddenValleyFragmentation.h>
Public Member Functions | |
| HVStringZ () | |
| Constructor. | |
| virtual | ~HVStringZ () |
| Destructor. | |
| void | init () override |
| Initialize data members. More... | |
| double | zFrag (int idOld, int idNew=0, double mT2=1.) override |
| Fragmentation function: top-level to determine parameters. More... | |
| virtual double | stopMass () override |
| Parameters for stopping in the middle; for now hardcoded. | |
| virtual double | stopNewFlav () override |
| virtual double | stopSmear () override |
 Public Member Functions inherited from StringZ | |
| StringZ () | |
| Constructor. | |
| virtual | ~StringZ () |
| Destructor. | |
| virtual double | zLund (double a, double b, double c=1., double head=1., double bNow=0., int idFrag=0, bool isOldSQuark=false, bool isNewSQuark=false, bool isOldDiquark=false, bool isNewDiquark=false) |
| Fragmentation function: select z according to provided parameters. More... | |
| virtual double | zPeterson (double epsilon) |
| virtual double | zLundMax (double a, double b, double c=1.) |
| Determine the maximum for zLund. More... | |
| virtual double | aAreaLund () |
| a and b fragmentation parameters needed in some operations. | |
| virtual double | bAreaLund () |
| bool | deriveBLund () |
| Method to derive bLund from <z> (for fixed a and reference mT2). More... | |
| Public Member Functions inherited from PhysicsBase | |
| void | initInfoPtr (Info &infoPtrIn) |
| This function is called from above for physics objects used in a run. More... | |
| virtual | ~PhysicsBase () |
| Empty virtual destructor. | |
| bool | flag (string key) const |
| Shorthand to read settings values. | |
| int | mode (string key) const |
| double | parm (string key) const |
| string | word (string key) const |
| vector< bool > | fvec (string key) const |
| vector< int > | mvec (string key) const |
| vector< double > | pvec (string key) const |
| vector< string > | wvec (string key) const |
Additional Inherited Members | |
| Public Types inherited from PhysicsBase | |
| enum | Status { INCOMPLETE = -1, COMPLETE = 0, CONSTRUCTOR_FAILED, INIT_FAILED, LHEF_END, LOWENERGY_FAILED, PROCESSLEVEL_FAILED, PROCESSLEVEL_USERVETO, MERGING_FAILED, PARTONLEVEL_FAILED, PARTONLEVEL_USERVETO, HADRONLEVEL_FAILED, CHECK_FAILED, OTHER_UNPHYSICAL, HEAVYION_FAILED, HADRONLEVEL_USERVETO } |
| Enumerate the different status codes the event generation can have. | |
| Protected Member Functions inherited from PhysicsBase | |
| PhysicsBase () | |
| Default constructor. | |
| virtual void | onInitInfoPtr () |
| virtual void | onBeginEvent () |
| This function is called in the very beginning of each Pythia::next call. | |
| virtual void | onEndEvent (Status) |
| virtual void | onStat () |
| This function is called from the Pythia::stat() call. | |
| void | registerSubObject (PhysicsBase &pb) |
| Register a sub object that should have its information in sync with this. | |
| Protected Attributes inherited from StringZ | |
| bool | useNonStandC |
| Initialization data, to be read from Settings. | |
| bool | useNonStandB |
| bool | useNonStandH |
| bool | usePetersonC |
| bool | usePetersonB |
| bool | usePetersonH |
| double | mc2 |
| double | mb2 |
| double | aLund |
| double | bLund |
| double | aExtraSQuark |
| double | aExtraDiquark |
| double | rFactC |
| double | rFactB |
| double | rFactH |
| double | aNonC |
| double | aNonB |
| double | aNonH |
| double | bNonC |
| double | bNonB |
| double | bNonH |
| double | epsilonC |
| double | epsilonB |
| double | epsilonH |
| double | stopM |
| double | stopNF |
| double | stopS |
| Protected Attributes inherited from PhysicsBase | |
| Info * | infoPtr = {} |
| Settings * | settingsPtr = {} |
| Pointer to the settings database. | |
| ParticleData * | particleDataPtr = {} |
| Pointer to the particle data table. | |
| Logger * | loggerPtr = {} |
| Pointer to logger. | |
| HadronWidths * | hadronWidthsPtr = {} |
| Pointer to the hadron widths data table. | |
| Rndm * | rndmPtr = {} |
| Pointer to the random number generator. | |
| CoupSM * | coupSMPtr = {} |
| Pointers to SM and SUSY couplings. | |
| CoupSUSY * | coupSUSYPtr = {} |
| BeamSetup * | beamSetupPtr = {} |
| BeamParticle * | beamAPtr = {} |
| BeamParticle * | beamBPtr = {} |
| BeamParticle * | beamPomAPtr = {} |
| BeamParticle * | beamPomBPtr = {} |
| BeamParticle * | beamGamAPtr = {} |
| BeamParticle * | beamGamBPtr = {} |
| BeamParticle * | beamVMDAPtr = {} |
| BeamParticle * | beamVMDBPtr = {} |
| PartonSystems * | partonSystemsPtr = {} |
| Pointer to information on subcollision parton locations. | |
| SigmaTotal * | sigmaTotPtr = {} |
| Pointers to the total/elastic/diffractive cross sections. | |
| SigmaCombined * | sigmaCmbPtr = {} |
| set< PhysicsBase * > | subObjects |
| UserHooksPtr | userHooksPtr |
| Static Protected Attributes inherited from StringZ | |
| static const double | CFROMUNITY = 0.01 |
| Constants: could only be changed in the code itself. More... | |
| static const double | AFROMZERO = 0.02 |
| static const double | AFROMC = 0.01 |
| static const double | EXPMAX = 50. |
| Do not take exponent of too large or small number. | |
The HVStringZ class is used to sample the HV fragmentation function f(z).
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overridevirtual |
Initialize data members.
The HVStringZ class is used to select z in HV fragmentation.
Initialize data members of the string z selection.
Paramaters of Lund/Bowler symmetric fragmentation function.
Use qv mass to set scale of bEff = b * m^2;
Mass of qv meson used to set stop scale for fragmentation iteration.
Reimplemented from StringZ.
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overridevirtual |
Fragmentation function: top-level to determine parameters.
Generate the fraction z that the next hadron will take using Lund/Bowler.
Shape parameters of Lund symmetric fragmentation function.
Reimplemented from StringZ.
1.8.11
