Belle2::EvtBSemiTauonicAmplitude Class Reference

The base class for the calculation of the spin dependent amplitudes for the BSemiTauonic model based on [M. More...

#include <EvtBSemiTauonicAmplitude.h>

Inheritance diagram for Belle2::EvtBSemiTauonicAmplitude:

Collaboration diagram for Belle2::EvtBSemiTauonicAmplitude:

Public Member Functions
	EvtBSemiTauonicAmplitude ()
	base constructor does nothing More...
virtual	~EvtBSemiTauonicAmplitude ()
	base destructor does nothing More...
virtual void	CalcAmp (EvtParticle *parent, EvtAmp &amp, EvtBSemiTauonicHelicityAmplitudeCalculator *HelicityAmplitudeCalculator)=0
	The function calculates the spin dependent amplitude. More...
double	CalcMaxProb (EvtId parent, EvtId meson, EvtId lepton, EvtId nudaug, EvtBSemiTauonicHelicityAmplitudeCalculator *HelicityAmplitudeCalculator)
	The function calculates the maximum probability. More...
EvtSpinDensity	RotateToHelicityBasisInBoostedFrame (const EvtParticle *p, EvtVector4R p4boost)
	The function calculates the rotation matrix to convert the spin basis to the helicity basis in the boosted frame. More...

Detailed Description

The base class for the calculation of the spin dependent amplitudes for the BSemiTauonic model based on [M.

Tanaka and R. Watanabe PRD87,034028(2013)].

Definition at line 20 of file EvtBSemiTauonicAmplitude.h.

Constructor & Destructor Documentation

EvtBSemiTauonicAmplitude()

Belle2::EvtBSemiTauonicAmplitude::EvtBSemiTauonicAmplitude ( )

inline

base constructor does nothing

Definition at line 24 of file EvtBSemiTauonicAmplitude.h.

{};

~EvtBSemiTauonicAmplitude()

virtual Belle2::EvtBSemiTauonicAmplitude::~EvtBSemiTauonicAmplitude ( )

inlinevirtual

base destructor does nothing

Definition at line 27 of file EvtBSemiTauonicAmplitude.h.

{};

Member Function Documentation

CalcAmp()

virtual void Belle2::EvtBSemiTauonicAmplitude::CalcAmp ( EvtParticle *  parent, EvtAmp &  amp, EvtBSemiTauonicHelicityAmplitudeCalculator *  HelicityAmplitudeCalculator  )

pure virtual

The function calculates the spin dependent amplitude.

Parameters

parent	a pointer to the parent particle.
amp	a pointer to fill the calculated spin dependent amplitude.
HelicityAmplitudeCalculator	a pointer to the calculator of the helicity dependent amplitude. The function calculate the spin dependent amplitude of the decay of parant.

Implemented in Belle2::EvtBSemiTauonicScalarMesonAmplitude, and Belle2::EvtBSemiTauonicVectorMesonAmplitude.

CalcMaxProb()

double Belle2::EvtBSemiTauonicAmplitude::CalcMaxProb	(	EvtId	parent,
		EvtId	meson,
		EvtId	lepton,
		EvtId	nudaug,
		EvtBSemiTauonicHelicityAmplitudeCalculator *	HelicityAmplitudeCalculator
	)

The function calculates the maximum probability.

Parameters

parent	a ID of the parent meson.
meson	a ID of the daughter meson.
lepton	a ID of the daughter lepton.
nudaug	a ID of the daughter neutrino.
HelicityAmplitudeCalculator	a pointer to the calculator of the helicity dependent amplitude.

Returns

the maxmum probability multiplied by 1.1. The function scan the q^2 and angle between the daughter meson and lepton and search for the the maximum probability value.

RotateToHelicityBasisInBoostedFrame()

EvtSpinDensity Belle2::EvtBSemiTauonicAmplitude::RotateToHelicityBasisInBoostedFrame	(	const EvtParticle *	p,
		EvtVector4R	p4boost
	)

The function calculates the rotation matrix to convert the spin basis to the helicity basis in the boosted frame.

Parameters

p	a pointer to the particle
p4boost	a 4 vector to specify the rest frame to boost to. The function calculate the rotation matrix from the spin basis defined in the p rest frame to the helicity basis in the rest frame of p4boost.

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

• EvtBSemiTauonicAmplitude.h