The class provides the form factors for semileptonic D and D* decays with full mass dependence. More...

#include <EvtBGL2FF.h>

Inheritance diagram for EvtBGL2FF:

Collaboration diagram for EvtBGL2FF:

Public Member Functions
	EvtBGL2FF (double bglap_0, double bglap_1, double bglap_2, double bglap_3, double bgla0_0, double bgla0_1, double bgla0_2, double bgla0_3)
	Default constructor.

	EvtBGL2FF (double bgla_0, double bgla_1, double bglb_0, double bglb_1, double bglc_1, double bglc_2)
	Default constructor.

void	getscalarff (EvtId parent, EvtId daught, double t, double mass, double fp, double f0)
	Returns scalar form factors.

void	getvectorff (EvtId, EvtId, double, double, double , double , double , double )
	Returns vector form factors.

void	gettensorff (EvtId, EvtId, double, double, double , double , double , double )
	Returns tensor form factors.

void	getbaryonff (EvtId, EvtId, double, double, double , double , double , double )
	Returns baryon form factors.

void	getdiracff (EvtId, EvtId, double, double, double , double , double , double , double , double )
	Returns dirac form factors.

void	getraritaff (EvtId, EvtId, double, double, double , double , double , double , double , double , double , double )
	Returns tarita form factors.

Private Attributes
double	ap_0 {0}
	B -> Dlnu: ai_n (i = p —vector, 0 —scalar; n = 0,1,2,3) are free coefficients of z expansion in dispersion relation parametrization from C.G.Boyd, B.Grinstein, R.F.Lebed, Phys. More...

double	ap_1 {0}
	1st-order z expansion coefficient for vector form factor: f_+

double	ap_2 {0}
	2nd-order z expansion coefficient for vector form factor: f_+

double	ap_3 {0}
	3rd-order z expansion coefficient for vector form factor: f_+

double	a0_0 {0}
	0th-order z expansion coefficient for scalar form factor f_0

double	a0_1 {0}
	1st-order z expansion coefficient for scalar form factor f_0

double	a0_2 {0}
	2nd-order z expansion coefficient for scalar form factor f_0

double	a0_3 {0}
	3rd-order z expansion coefficient for scalar form factor f_0

Detailed Description

The class provides the form factors for semileptonic D and D* decays with full mass dependence.

Definition at line 17 of file EvtBGL2FF.h.

Member Data Documentation

◆ ap_0

double ap_0 {0}

private

B -> Dlnu: ai_n (i = p —vector, 0 —scalar; n = 0,1,2,3) are free coefficients of z expansion in dispersion relation parametrization from C.G.Boyd, B.Grinstein, R.F.Lebed, Phys.

Rev. Lett. 74,4603(1995)

Chosen the order of series N=3, i.e. a_0 + a_1 * z + a_2 * z^2 + a_3 * z^3

Fitted values cited from Bigi, Dante and Gambino, Paolo, Phys. Rev. D. 94.094008 (2016): a+0, a+1, a+2, a+3 : 0.01565, -0.0353, -0.043, 0.194 a00, a01, a02, a03 : 0.07932, -0.214, 0.17, -0.958

NOTE : This is an alternative BGL model. Use it if you understand the difference with the default one called 'EvtBGLFF' in basf2.

B -> D*lnu:

This class should not be used for B -> D* l nu decays. Use the EvtBGL class instead. 0th-order z expansion coefficient for vector form factor: f_+

Definition at line 80 of file EvtBGL2FF.h.

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

generators/evtgen/models/include/EvtBGL2FF.h
generators/evtgen/models/src/EvtBGL2FF.cc

Public Member Functions

Private Attributes

Detailed Description

Member Data Documentation

◆ ap_0