Belle2::EvtBSemiTauonicScalarMesonAmplitude Class Reference

The class calculates the spin dependent amplitudes of B->Dtaunu decays for the BSemiTauonic model based on [M. More...

#include <EvtBSemiTauonicScalarMesonAmplitude.h>

Inheritance diagram for Belle2::EvtBSemiTauonicScalarMesonAmplitude:

Collaboration diagram for Belle2::EvtBSemiTauonicScalarMesonAmplitude:

Public Member Functions
void	CalcAmp (EvtParticle *parent, EvtAmp &amp, EvtBSemiTauonicHelicityAmplitudeCalculator *HelicityAmplitudeCalculator) override
	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 class calculates the spin dependent amplitudes of B->Dtaunu decays for the BSemiTauonic model based on [M.

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

Definition at line 25 of file EvtBSemiTauonicScalarMesonAmplitude.h.

Member Function Documentation

CalcAmp()

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

overridevirtual

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.
CalcHelAmp	a pointer to the calculator of the helicity dependent amplitude. The function calculate the spin dependent amplitude of the semi-tauonic decay to a scalar meson (D meson).

Implements Belle2::EvtBSemiTauonicAmplitude.

CalcMaxProb()

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

inherited

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  )

inherited

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:

• EvtBSemiTauonicScalarMesonAmplitude.h