#include <StandardModel.h>

Public Member Functions
	CoupSM ()
	Constructor.

void	init (Settings &settings, Rndm *rndmPtrIn)
	Initialize, normally from Pythia::init(). More...

double	alphaS (double scale2)
	alpha_S value and Lambda values.

double	alphaS1Ord (double scale2)

double	alphaS2OrdCorr (double scale2)

double	Lambda3 () const

double	Lambda4 () const

double	Lambda5 () const

double	alphaEM (double scale2)
	Return alpha_EM value.

double	sin2thetaW ()
	Return electroweak mixing angle and Fermi constant.

double	cos2thetaW ()

double	sin2thetaWbar ()

double	GF ()

double	ef (int idAbs)
	Return electroweak couplings of quarks and leptons.

double	vf (int idAbs)

double	af (int idAbs)

double	t3f (int idAbs)

double	lf (int idAbs)

double	rf (int idAbs)

double	ef2 (int idAbs)
	Return some squared couplings and other combinations.

double	vf2 (int idAbs)

double	af2 (int idAbs)

double	efvf (int idAbs)

double	vf2af2 (int idAbs)

double	VCKMgen (int genU, int genD)

double	V2CKMgen (int genU, int genD)

double	VCKMid (int id1, int id2)
	Return CKM value or square for incoming flavours (sign irrelevant). More...

double	V2CKMid (int id1, int id2)
	Return squared CKM value for incoming flavours (sign irrelevant). More...

double	V2CKMsum (int id)
	Return CKM sum of squares for given inflavour, or random outflavour.

int	V2CKMpick (int id)
	Pick an outgoing flavour for given incoming one, given CKM mixing. More...

Protected Attributes
double	s2tW
	Couplings and VCKM matrix (index 0 not used).

double	c2tW

double	s2tWbar

double	GFermi

double	vfSave [20]

double	lfSave [20]

double	rfSave [20]

double	ef2Save [20]

double	vf2Save [20]

double	af2Save [20]

double	efvfSave [20]

double	vf2af2Save [20]

double	VCKMsave [5][5]

double	V2CKMsave [5][5]

double	V2CKMout [20]

Rndm *	rndmPtr
	Pointer to the random number generator.

AlphaStrong	alphaSlocal
	An AlphaStrong instance for general use (but not MPI, ISR, FSR).

AlphaEM	alphaEMlocal
	An AlphaEM instance for general use (but not MPI, ISR, FSR).

Static Protected Attributes
static const double	efSave [20]
	Constants: could only be changed in the code itself. More...

static const double	afSave [20]

Detailed Description

The CoupSM class stores and returns electroweak couplings, including Cabibbo-Kobayashi-Maskawa mass mixing matrix elements.

Member Function Documentation

void init	(	Settings &	settings,
		Rndm *	rndmPtrIn
	)

Initialize, normally from Pythia::init().

Initialize electroweak mixing angle and couplings, and CKM matrix elements.

Store input pointer;

Initialize the local AlphaStrong instance.

Initialize the local AlphaEM instance.

Read in electroweak mixing angle and the Fermi constant.

Initialize electroweak couplings.

Read in CKM matrix element values and store them.

Also allow for the potential existence of a fourth generation.

Calculate squares of matrix elements.

Sum VCKM^2_out sum for given incoming flavour, excluding top as partner.

double V2CKMid	(	int	id1,
		int	id2
	)

Return squared CKM value for incoming flavours (sign irrelevant).

Use absolute sign (want to cover both f -> f' W and f fbar' -> W).

Ensure proper order before reading out from V2CKMsave or lepton match.

No more valid cases.

int V2CKMpick ( int id )

Pick an outgoing flavour for given incoming one, given CKM mixing.

Initial values.

Quarks: need to make random choice.

Leptons: unambiguous.

Done. Return with sign.

double VCKMgen	(	int	genU,
		int	genD
	)

inline

Return CKM value or square: first index 1/2/3/4 = u/c/t/t', second 1/2/3/4 = d/s/b/b'.

double VCKMid	(	int	id1,
		int	id2
	)

Return CKM value or square for incoming flavours (sign irrelevant).

Return CKM value for incoming flavours (sign irrelevant).

Use absolute sign (want to cover both f -> f' W and f fbar' -> W).

Ensure proper order before reading out from VCKMsave or lepton match.

No more valid cases.

Member Data Documentation

const double afSave

staticprotected

Initial value:

= { 0., -1., 1., -1., 1., -1., 1., -1., 1.,

0., 0., -1., 1., -1., 1., -1., 1., -1., 1., 0.}

const double efSave

staticprotected

Initial value:

= { 0., -1./3., 2./3., -1./3., 2./3., -1./3.,

2./3., -1./3., 2./3., 0., 0., -1., 0., -1., 0., -1., 0., -1., 0., 0.}

Constants: could only be changed in the code itself.

The CoupSM class.

Definitions of static variables: charges and axial couplings.

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

include/Pythia8/StandardModel.h
src/StandardModel.cc

Public Member Functions

Protected Attributes

Static Protected Attributes

Detailed Description

Member Function Documentation

Member Data Documentation