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EvtHQET3FF Class Reference

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

#include <EvtHQET3FF.h>

Inheritance diagram for EvtHQET3FF:

Public Member Functions

 EvtHQET3FF (double hqetha1_1, double hqetrho2, double hqetr0_1, double hqetr1_1, double hqetr2_1)
 Default constructor.
 
 EvtHQET3FF (double hqetv1_1, double hqetrho2, double hqetdelta)
 Default constructor.
 
void getvectorff (EvtId parent, EvtId daught, double t, double mass, double *a1f, double *a2f, double *vf, double *a0f)
 Returns vector ffs.
 
void getscalarff (EvtId parent, EvtId daught, double t, double mass, double *fp, double *f0)
 Returns scalar ffs.
 
void gettensorff (EvtId, EvtId, double, double, double *, double *, double *, double *)
 Returns tensor ffs.
 
void getbaryonff (EvtId, EvtId, double, double, double *, double *, double *, double *)
 Returns baryon ffs.
 
void getdiracff (EvtId, EvtId, double, double, double *, double *, double *, double *, double *, double *)
 Returns dirac ffs.
 
void getraritaff (EvtId, EvtId, double, double, double *, double *, double *, double *, double *, double *, double *, double *)
 Returns tarita ffs.
 

Private Attributes

double ha1_1 {0}
 Normalization of leading FF.
 
double rho2 {0}
 CLN slope of leading FF.
 
double r0_1 {0}
 Normalization of R0(w=1)
 
double r1_1 {0}
 Normalization of R1(w=1)
 
double r2_1 {0}
 Normalization of R2(w=1)
 
double v1_1 {0}
 Normalization of leading scalar FF.
 
double d1_1 {0}
 Normalization of scalar FF.
 

Detailed Description

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

Definition at line 17 of file EvtHQET3FF.h.

Constructor & Destructor Documentation

◆ EvtHQET3FF() [1/2]

EvtHQET3FF ( double  hqetha1_1,
double  hqetrho2,
double  hqetr0_1,
double  hqetr1_1,
double  hqetr2_1 
)

Default constructor.

Definition at line 18 of file EvtHQET3FF.cc.

19{
20
21 rho2 = hqetrho2;
22 r0_1 = hqetr0_1;
23 r1_1 = hqetr1_1;
24 r2_1 = hqetr2_1;
25 ha1_1 = hqetha1_1;
26
27 return;
28}
EvtHQET3FF::r1_1
double r1_1
Normalization of R1(w=1)
Definition: EvtHQET3FF.h:64
EvtHQET3FF::rho2
double rho2
CLN slope of leading FF.
Definition: EvtHQET3FF.h:58
EvtHQET3FF::r0_1
double r0_1
Normalization of R0(w=1)
Definition: EvtHQET3FF.h:61
EvtHQET3FF::r2_1
double r2_1
Normalization of R2(w=1)
Definition: EvtHQET3FF.h:67
EvtHQET3FF::ha1_1
double ha1_1
Normalization of leading FF.
Definition: EvtHQET3FF.h:55

◆ EvtHQET3FF() [2/2]

EvtHQET3FF ( double  hqetv1_1,
double  hqetrho2,
double  hqetdelta 
)

Default constructor.

Definition at line 30 of file EvtHQET3FF.cc.

31{
32
33 v1_1 = hqetv1_1;
34 rho2 = hqetrho2;
35 d1_1 = hqetdelta;
36
37 return;
38}
EvtHQET3FF::d1_1
double d1_1
Normalization of scalar FF.
Definition: EvtHQET3FF.h:73
EvtHQET3FF::v1_1
double v1_1
Normalization of leading scalar FF.
Definition: EvtHQET3FF.h:70

Member Function Documentation

◆ getbaryonff()

void getbaryonff ( EvtId  ,
EvtId  ,
double  ,
double  ,
double *  ,
double *  ,
double *  ,
double *   
)

Returns baryon ffs.

Definition at line 108 of file EvtHQET3FF.cc.

110{
111
112 EvtGenReport(EVTGEN_ERROR, "EvtGen") << "Not implemented :getbaryonff in EvtHQET3FF.\n";
113 ::abort();
114
115}

◆ getdiracff()

void getdiracff ( EvtId  ,
EvtId  ,
double  ,
double  ,
double *  ,
double *  ,
double *  ,
double *  ,
double *  ,
double *   
)

Returns dirac ffs.

Definition at line 117 of file EvtHQET3FF.cc.

119{
120
121 EvtGenReport(EVTGEN_ERROR, "EvtGen") << "Not implemented :getdiracff in EvtHQET3FF.\n";
122 ::abort();
123
124}

◆ getraritaff()

void getraritaff ( EvtId  ,
EvtId  ,
double  ,
double  ,
double *  ,
double *  ,
double *  ,
double *  ,
double *  ,
double *  ,
double *  ,
double *   
)

Returns tarita ffs.

Definition at line 126 of file EvtHQET3FF.cc.

128{
129
130 EvtGenReport(EVTGEN_ERROR, "EvtGen") << "Not implemented :getraritaff in EvtHQET3FF.\n";
131 ::abort();
132
133}

◆ getscalarff()

void getscalarff ( EvtId  parent,
EvtId  daught,
double  t,
double  mass,
double *  fp,
double *  f0 
)

Returns scalar ffs.

Definition at line 41 of file EvtHQET3FF.cc.

43{
44
45
46 double mb = EvtPDL::getMeanMass(parent);
47 double w = ((mb * mb) + (mass * mass) - t) / (2.0 * mb * mass);
48
49 // Form factors have a general form, with parameters passed in
50 // from the arguements.
51
52 // Use dispersion relation parametrization from
53 // I.Caprini, L.Lelluch, M.Neubert, Nucl. Phys. B 530,153(1998)
54 const double z = (sqrt(w + 1) - sqrt(2.)) / (sqrt(w + 1) + sqrt(2.));
55 double v1 = v1_1 * (1. - 8.*rho2 * z + (51.*rho2 - 10.) * z * z - (252.*rho2 - 84.) * z * z * z);
56
57 *fp = 0.5 * (mass + mb) / sqrt(mass * mb) * v1;
58
59 double s1 = (1 + d1_1 * (-0.019 + 0.041 * (w - 1) - 0.015 * pow(w - 1, 2.))) * v1;
60
61 *f0 = sqrt(mass * mb) / (mass + mb) * (w + 1) * s1;
62
63 return;
64}
Belle2::sqrt
double sqrt(double a)
sqrt for double
Definition: beamHelpers.h:28
VXDTFFilterTest::v1
const std::vector< double > v1
MATLAB generated random vector.
Definition: decorrelationMatrix.cc:28

◆ gettensorff()

void gettensorff ( EvtId  ,
EvtId  ,
double  ,
double  ,
double *  ,
double *  ,
double *  ,
double *   
)

Returns tensor ffs.

Definition at line 97 of file EvtHQET3FF.cc.

99{
100
101 EvtGenReport(EVTGEN_ERROR, "EvtGen") << "Not implemented :gettensorff in EvtHQET3FF.\n";
102 ::abort();
103
104}

◆ getvectorff()

void getvectorff ( EvtId  parent,
EvtId  daught,
double  t,
double  mass,
double *  a1f,
double *  a2f,
double *  vf,
double *  a0f 
)

Returns vector ffs.

Definition at line 66 of file EvtHQET3FF.cc.

69{
70
71
72 double mb = EvtPDL::getMeanMass(parent);
73 double w = ((mb * mb) + (mass * mass) - t) / (2.0 * mb * mass);
74
75 // Form factors have a general form, with parameters passed in
76 // from the arguements.
77
78 double rstar = (2.0 * sqrt(mb * mass)) / (mb + mass);
79
80 // Use disparsion relation parametrization from
81 // I.Caprini, L.Lelluch, M.Neubert, Nucl. Phys. B 530,153(1998)
82 const double z = (sqrt(w + 1) - sqrt(2.)) / (sqrt(w + 1) + sqrt(2.));
83 double ha1 = ha1_1 * (1. - 8.*rho2 * z + (53.*rho2 - 15.) * z * z - (231.*rho2 - 91.) * z * z * z);
84 double r0 = r0_1 - 0.11 * (w - 1) + 0.01 * (w - 1) * (w - 1);
85 double r1 = r1_1 - 0.12 * (w - 1) + 0.05 * (w - 1) * (w - 1);
86 double r2 = r2_1 + 0.11 * (w - 1) - 0.06 * (w - 1) * (w - 1);
87
88 *a1f = (1.0 - (t / ((mb + mass) * (mb + mass)))) * ha1;
89 *a1f = (*a1f) / rstar;
90 *a2f = (r2 / rstar) * ha1;
91 *vf = (r1 / rstar) * ha1;
92 *a0f = (r0 / rstar) * ha1;
93
94 return;
95}

Member Data Documentation

◆ d1_1

double d1_1 {0}
private

Normalization of scalar FF.

Definition at line 73 of file EvtHQET3FF.h.

◆ ha1_1

double ha1_1 {0}
private

Normalization of leading FF.

Definition at line 55 of file EvtHQET3FF.h.

◆ r0_1

double r0_1 {0}
private

Normalization of R0(w=1)

Definition at line 61 of file EvtHQET3FF.h.

◆ r1_1

double r1_1 {0}
private

Normalization of R1(w=1)

Definition at line 64 of file EvtHQET3FF.h.

◆ r2_1

double r2_1 {0}
private

Normalization of R2(w=1)

Definition at line 67 of file EvtHQET3FF.h.

◆ rho2

double rho2 {0}
private

CLN slope of leading FF.

Definition at line 58 of file EvtHQET3FF.h.

◆ v1_1

double v1_1 {0}
private

Normalization of leading scalar FF.

Definition at line 70 of file EvtHQET3FF.h.

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