PYTHIA  8.303
Public Member Functions | List of all members
HVStringFlav Class Reference

The HVStringFlav class is used to select HV-quark and HV-hadron flavours. More...

#include <HiddenValleyFragmentation.h>

Inheritance diagram for HVStringFlav:
StringFlav PhysicsBase

Public Member Functions

 HVStringFlav ()
 ~HVStringFlav ()
void init ()
 Initialize data members. More...
FlavContainer pick (FlavContainer &flavOld, double, double, bool)
 Pick a new flavour (including diquarks) given an incoming one. More...
int combine (FlavContainer &flav1, FlavContainer &flav2)
 Combine two flavours (including diquarks) to produce a hadron. More...
- Public Member Functions inherited from StringFlav
 StringFlav ()
virtual ~StringFlav ()
int pickLightQ ()
 Pick a light d, u or s quark according to fixed ratios.
virtual FlavContainer pickGauss (FlavContainer &flavOld, bool allowPop=true)
virtual FlavContainer pickThermal (FlavContainer &flavOld, double pT, double nNSP)
virtual int combineId (int id1, int id2, bool keepTrying=true)
 Ditto, simplified input argument for simple configurations.
virtual int combineToLightest (int id1, int id2)
 Combine two flavours to produce a hadron with lowest possible mass. More...
virtual int getHadronIDwin ()
 Return chosen hadron in case of thermal model.
virtual int combineLastThermal (FlavContainer &flav1, FlavContainer &flav2, double pT, double nNSP)
virtual int getHadronID (FlavContainer &flav1, FlavContainer &flav2, double pT=-1.0, double nNSP=0, bool finalTwo=false)
virtual double getHadronMassWin (int idHad)
 Return hadron mass. Used one if present, pick otherwise.
void assignPopQ (FlavContainer &flav)
 Assign popcorn quark inside an original (= rank 0) diquark. More...
int makeDiquark (int id1, int id2, int idHad=0)
 Combine two quarks to produce a diquark. More...
void addQuarkDiquark (vector< pair< int, int > > &quarkCombis, int qID, int diqID, int hadronID)
 Check if quark-diquark combination should be added. If so add.
int getMesonSpinCounter (int hadronID)
 Get spin counter for mesons.
- 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

Additional Inherited Members

- Public Types inherited from PhysicsBase
enum  Status {
 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 StringFlav
bool suppressLeadingB
 Settings for Gaussian model.
bool mT2suppression
bool useWidthPre
double probQQtoQ
double probStoUD
double probSQtoQQ
double probQQ1toQQ0
double probQandQQ
double probQandS
double probQandSinQQ
double probQQ1corr
double probQQ1corrInv
double probQQ1norm
double probQQ1join [4]
double mesonRate [4][6]
double mesonRateSum [4]
double mesonMix1 [2][6]
double mesonMix2 [2][6]
double etaSup
double etaPrimeSup
double decupletSup
double baryonCGSum [6]
double baryonCGMax [6]
double popcornRate
double popcornSpair
double popcornSmeson
double scbBM [3]
double popFrac
double popS [3]
double dWT [3][7]
double lightLeadingBSup
double heavyLeadingBSup
double sigmaHad
double widthPreStrange
double widthPreDiquark
bool thermalModel
 Settings for thermal model.
bool mesonNonetL1
double temperature
double tempPreFactor
int nNewQuark
double mesMixRate1 [2][6]
double mesMixRate2 [2][6]
double mesMixRate3 [2][6]
double baryonOctWeight [6][6][6][2]
double baryonDecWeight [6][6][6][2]
bool closePacking
 Settings used by both models.
double exponentMPI
double exponentNSP
map< int, vector< pair< int, int > > > hadronConstIDs
 Key = hadron id, value = list of constituent ids.
map< int, vector< pair< int, int > > > possibleHadrons
map< int, vector< double > > possibleRatePrefacs
 Key = initial (di)quark id, value = prefactor to multiply rate.
map< pair< int, int >, vector< pair< int, int > > > possibleHadronsLast
 Similar, but for combining the last two (di)quarks. Key = (di)quark pair.
map< pair< int, int >, vector< double > > possibleRatePrefacsLast
int hadronIDwin
 Selection in thermal model.
int idNewWin
double hadronMassWin
- Protected Attributes inherited from PhysicsBase
InfoinfoPtr = {}
SettingssettingsPtr = {}
 Pointer to the settings database.
ParticleDataparticleDataPtr = {}
 Pointer to the particle data table.
HadronWidthshadronWidthsPtr = {}
 Pointer to the hadron widths data table.
RndmrndmPtr = {}
 Pointer to the random number generator.
CoupSMcoupSMPtr = {}
 Pointers to SM and SUSY couplings.
CoupSUSYcoupSUSYPtr = {}
BeamParticlebeamAPtr = {}
BeamParticlebeamBPtr = {}
BeamParticlebeamPomAPtr = {}
BeamParticlebeamPomBPtr = {}
BeamParticlebeamGamAPtr = {}
BeamParticlebeamGamBPtr = {}
BeamParticlebeamVMDAPtr = {}
BeamParticlebeamVMDBPtr = {}
PartonSystemspartonSystemsPtr = {}
 Pointer to information on subcollision parton locations.
SigmaTotalsigmaTotPtr = {}
 Pointer to the total/elastic/diffractive cross sections.
set< PhysicsBase * > subObjects
UserHooksPtr userHooksPtr
- Static Protected Attributes inherited from StringFlav
static const int mesonMultipletCode [6] = { 1, 3, 10003, 10001, 20003, 5}
 Constants: could only be changed in the code itself. More...
static const double baryonCGOct [6] = { 0.75, 0.5, 0., 0.1667, 0.0833, 0.1667}
static const double baryonCGDec [6] = { 0., 0., 1., 0.3333, 0.6667, 0.3333}

Detailed Description

The HVStringFlav class is used to select HV-quark and HV-hadron flavours.

Member Function Documentation

int combine ( FlavContainer flav1,
FlavContainer flav2 

Combine two flavours (including diquarks) to produce a hadron.

Combine two HV-flavours to produce an HV-hadron. This is simplified procedure, assuming only two HV mesons defined.

Positive and negative flavour. Note that with kinetic mixing the Fv are really intended to represent qv, so remap.

Pick HV-meson code, spin either 0 or 1.


Reimplemented from StringFlav.

void init ( )

Initialize data members.

The HVStringFlav class is used to select HV-quark and HV-hadron flavours.

Initialize data members of the flavour generation.

Read in data from Settings.

Reimplemented from StringFlav.

FlavContainer pick ( FlavContainer flavOld,
double  ,
double  ,

Pick a new flavour (including diquarks) given an incoming one.

Pick a new HV-flavour given an incoming one.

Initial values for new flavour.

Pick new HV-flavour at random; keep track of sign.


Reimplemented from StringFlav.

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