KoralW Class Reference

C++ interface for the FORTRAN 4-fermion final state generator KoralW. More...

#include <KoralW.h>

Public Member Functions
	KoralW ()
	Constructor.
	~KoralW ()
	Destructor.
void	setCMSEnergy (double cmsEnergy)
	Sets the CMS energy. More...
void	init (const std::string &dataPath, const std::string &userDataFile)
	Initializes the generator. More...
void	generateEvent (MCParticleGraph &mcGraph, TVector3 vertex, TLorentzRotation boost)
	Generates one single event. More...
void	term ()
	Terminates the generator. More...
double	getCrossSection ()
	Returns the total cross section of the generated process. More...
double	getCrossSectionError ()
	Returns the error on the total cross section of the generated process. More...

Protected Member Functions
void	storeParticle (MCParticleGraph &mcGraph, const float *mom, const float *vtx, int pdg, TVector3 vertex, TLorentzRotation boost, bool isVirtual=false, bool isInitial=false)
	Store a single generated particle into the MonteCarlo graph. More...

Protected Attributes
double	m_crossSection
	The cross section of the generated KoralW events.
double	m_crossSectionError
	The error on the cross section of the generated KoralW events.
double	m_cmsEnergy
	CMS Energy = 2*Ebeam [GeV].

Private Attributes
double	m_XPar [m_numXPar]
	Values of parameters for KoralW.
unsigned int	m_seed1
	First seed for the random number generator.
unsigned int	m_seed2
	Second seed for the random number generator.
unsigned int	m_seed3
	Third seed for the random number generator.

Static Private Attributes
static constexpr int	m_numXPar = 10000
	Number of parameters for KoralW.

Detailed Description

C++ interface for the FORTRAN 4-fermion final state generator KoralW.

Definition at line 39 of file KoralW.h.

Member Function Documentation

generateEvent()

void generateEvent	(	MCParticleGraph &	mcGraph,
		TVector3	vertex,
		TLorentzRotation	boost
	)

Generates one single event.

Parameters

mcGraph	Reference to the MonteCarlo graph into which the generated particles will be stored.
vertex	generated vertex.
boost	generated boost.

Definition at line 109 of file KoralW.cc.

{
  kw_make_();
 
  //Store the particles with status id 3 and 2 as virtual particles, the particles with status id 1 as real particles
  for (int iPart = 0; iPart < hepevt_.nhep; ++iPart) {
    if (hepevt_.isthep[iPart] > 1) {
      storeParticle(mcGraph, hepevt_.phep[iPart], hepevt_.vhep[iPart], hepevt_.idhep[iPart], vertex, boost, true);
    } else {
      storeParticle(mcGraph, hepevt_.phep[iPart], hepevt_.vhep[iPart], hepevt_.idhep[iPart], vertex, boost);
    }
  }
}

getCrossSection()

double getCrossSection ( )

inline

Returns the total cross section of the generated process.

Returns

The total cross section.

Definition at line 85 of file KoralW.h.

:
 

getCrossSectionError()

double getCrossSectionError ( )

inline

Returns the error on the total cross section of the generated process.

Returns

The error on the total cross section.

Definition at line 90 of file KoralW.h.

init()

void init	(	const std::string &	dataPath,
		const std::string &	userDataFile
	)

Initializes the generator.

Parameters

dataPath	The path to the default input data file for KoralW.
userDataFile	The path and filename of the user input data file, which defines the user settings for the generator.
randomSeed	The random seed for the generator.

Definition at line 73 of file KoralW.cc.

setCMSEnergy()

void setCMSEnergy ( double  cmsEnergy )

inline

Sets the CMS energy.

Parameters

cmsEnergy

The CMS energy in [GeV].

Definition at line 60 of file KoralW.h.

storeParticle()

void storeParticle ( MCParticleGraph &  mcGraph, const float *  mom, const float *  vtx, int  pdg, TVector3  vertex, TLorentzRotation  boost, bool  isVirtual = false, bool  isInitial = false  )

protected

Store a single generated particle into the MonteCarlo graph.

Parameters

mcGraph	Reference to the MonteCarlo graph into which the particle should be stored.
mom	The 3-momentum of the particle in [GeV].
vtx	The vertex of the particle in [mm].
pdg	The PDG code of the particle.
isVirtual	If the particle is a virtual particle, such as the incoming particles, set this to true.
isInitial	If the particle is a initial particle for ISR, set this to true.

Definition at line 136 of file KoralW.cc.

term()

void term

(

)

Terminates the generator.

Closes the internal Fortran generator and retrieves the total cross section.

Definition at line 124 of file KoralW.cc.

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

• generators/koralw/include/KoralW.h
• generators/koralw/src/KoralW.cc