#include <LundZGenerator.h>
Public Member Functions | |
Standard constructors and destructors. | |
LundZGenerator () | |
Default constructor. | |
LundZGenerator (const LundZGenerator &) | |
Copy-constructor. | |
virtual | ~LundZGenerator () |
Destructor. | |
Virtual functions mandated by the ZGenerator base class. | |
virtual double | generate (cPDPtr lastPD, cPDPtr newPD, Energy2 mT2) const |
generate the scaling variable z of hadrons created at each step of the fragmentation procedure, given the two hadron constituents lastPD leftover at the previous step, and the newPD newly created in the current step and the hadron transverse mass squared mT2. | |
double | aSym () const |
Return the default value of the parameter of the Lund Symmetric fragmentation function. | |
InvEnergy2 | bSym () const |
Return the default value of the parameter of the Lund Symmetric fragmentation function. | |
Functions used by the persistent I/O system. | |
void | persistentOutput (PersistentOStream &os) const |
Function used to write out object persistently. | |
void | persistentInput (PersistentIStream &is, int version) |
Function used to read in object persistently. | |
Static Public Member Functions | |
static void | Init () |
Standard Init function used to initialize the interface. | |
Protected Member Functions | |
virtual void | setShape (cPDPtr lastPD, cPDPtr newPD, Energy2 mT2) const |
Determine the , and parameters of the fragmentation function parametrization, given the flavour content of the two end-points lastPD and newPD and the hadron mT2. | |
virtual double | rQ (long hf) const |
Return the value of the parameter of the Bowler parametrization given the the heavy quark id number, hf. | |
Clone Methods. | |
virtual IBPtr | clone () const |
Make a simple clone of this object. | |
virtual IBPtr | fullclone () const |
Make a clone of this object, possibly modifying the cloned object to make it sane. | |
Standard Interfaced functions. | |
virtual void | doupdate () throw (UpdateException) |
Check sanity of the object during the setup phase. | |
virtual void | doinit () throw (InitException) |
Initialize this object after the setup phase before saving an EventGenerator to disk. | |
virtual void | dofinish () |
Finalize this object. | |
Private Member Functions | |
double | af () const |
Return the factor of the fragmentation function parametrization. | |
double | bf () const |
Return the factor of the fragmentation function parametrization. | |
double | cf () const |
Return the factor of the fragmentation function parametrization. | |
bool | smallZmax (double zm) const |
Return true when zm is below the minimal value for Zmax. | |
bool | largeZmax (double zm) const |
Return true when zm is above the maximal value for Zmax. | |
bool | largeZmax (double zm, double bmt2) const |
Return true when both zm and bmt2 are large. | |
bool | cCloseToOne () const |
Return true when is close to 1. | |
bool | cCloseToA () const |
Return true when is close to . | |
LundZGenerator & | operator= (const LundZGenerator &) |
Private and non-existent assignment operator. | |
Private Attributes | |
double | asym |
The default parameter of the Lund Symmetric fragmentation function. | |
InvEnergy2 | bsym |
The default parameter of the Lund Symmetric fragmentation function. | |
double | deltaDQ |
The amount by which the effective a parameter in the Lund flavour dependent symmetric fragmentation function is assumed to be larger than the default when diquarks are produced. | |
double | rQc |
The value of the parameter of the Bowler parametrization for all quarks heavier than the c-quark. | |
double | bmT2 |
Current value of . | |
double | theAf |
Current value of . | |
double | theCf |
Current value of . | |
Static Private Attributes | |
static ClassDescription < LundZGenerator > | initLundZGenerator |
Init Interface Description/Map. |
For diuark production there is an enhancement of the effective parameter (see deltaDQ).
A heavy endpoint quark (above c quark) is treated according to the Bowler modification of the Lund Symmetric fragmentation function. (see the rQ() method).
The LundZGenerator inherits all the necessary interfaces from the ZGenerator class.
Definition at line 35 of file LundZGenerator.h.
void Pythia7::LundZGenerator::persistentOutput | ( | PersistentOStream & | os | ) | const |
Function used to write out object persistently.
os | the persistent output stream written to. |
Reimplemented from ThePEG::Interfaced.
void Pythia7::LundZGenerator::persistentInput | ( | PersistentIStream & | is, | |
int | version | |||
) |
Function used to read in object persistently.
is | the persistent input stream read from. | |
version | the version number of the object when written. |
Reimplemented from ThePEG::Interfaced.
virtual double Pythia7::LundZGenerator::rQ | ( | long | hf | ) | const [inline, protected, virtual] |
Return the value of the parameter of the Bowler parametrization given the the heavy quark id number, hf.
Note that the same value is returned for all hf above the c-quark.
virtual IBPtr Pythia7::LundZGenerator::clone | ( | ) | const [inline, protected, virtual] |
Make a simple clone of this object.
Implements ThePEG::InterfacedBase.
virtual IBPtr Pythia7::LundZGenerator::fullclone | ( | ) | const [inline, protected, virtual] |
Make a clone of this object, possibly modifying the cloned object to make it sane.
Reimplemented from ThePEG::InterfacedBase.
virtual void Pythia7::LundZGenerator::doinit | ( | ) | throw (InitException) [inline, protected, virtual] |
Initialize this object after the setup phase before saving an EventGenerator to disk.
InitException | if object could not be initialized properly. |
Reimplemented from ThePEG::InterfacedBase.
virtual void Pythia7::LundZGenerator::dofinish | ( | ) | [inline, protected, virtual] |
Finalize this object.
Called in the run phase just after a run has ended. Used eg. to write out statistics.
Reimplemented from ThePEG::InterfacedBase.