Herwig
7.2.1
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The BtoSGammaKagan class implements the model of hep-ph/9805303 for the hadronic mass spectrum in decays. More...
#include <BtoSGammaKagan.h>
Public Member Functions | |
BtoSGammaKagan () | |
The default constructor. | |
virtual Energy | hadronicMass (Energy mb, Energy mquark) |
Returns the hadronic mass. More... | |
virtual void | dataBaseOutput (ofstream &os, bool header, bool create) const |
Output the setup information for the particle database. More... | |
Functions used by the persistent I/O system. | |
void | persistentOutput (PersistentOStream &os) const |
Function used to write out object persistently. More... | |
void | persistentInput (PersistentIStream &is, int version) |
Function used to read in object persistently. More... | |
Public Member Functions inherited from Herwig::BtoSGammaHadronicMass | |
BtoSGammaHadronicMass () | |
The default constructor. | |
void | persistentOutput (PersistentOStream &os) const |
Function used to write out object persistently. More... | |
void | persistentInput (PersistentIStream &is, int version) |
Function used to read in object persistently. More... | |
Public Member Functions inherited from ThePEG::Interfaced | |
virtual bool | defaultInit () |
PPtr | getParticle (PID) const |
PDPtr | getParticleData (PID) const |
bool | used () const |
void | useMe () const |
tEGPtr | generator () const |
void | persistentOutput (PersistentOStream &os) const |
void | persistentInput (PersistentIStream &is, int version) |
PPtr | getParticle (PID) const |
PDPtr | getParticleData (PID) const |
bool | used () const |
void | useMe () const |
tEGPtr | generator () const |
void | persistentOutput (PersistentOStream &os) const |
void | persistentInput (PersistentIStream &is, int version) |
Public Member Functions inherited from ThePEG::InterfacedBase | |
string | fullName () const |
string | name () const |
string | path () const |
string | comment () const |
void | setup (istream &is) |
virtual void | debugme () const |
void | update () |
void | init () |
virtual bool | preInitialize () const |
void | initrun () |
void | finish () |
void | touch () |
void | reset () |
void | clear () |
InitState | state () const |
bool | locked () const |
bool | touched () const |
void | persistentOutput (PersistentOStream &os) const |
void | persistentInput (PersistentIStream &is, int version) |
void | update () |
void | init () |
virtual bool | preInitialize () const |
void | initrun () |
void | finish () |
void | touch () |
void | reset () |
void | clear () |
InitState | state () const |
bool | locked () const |
bool | touched () const |
void | persistentOutput (PersistentOStream &os) const |
void | persistentInput (PersistentIStream &is, int version) |
Public Member Functions inherited from ThePEG::Base | |
void | debug () const |
Public Member Functions inherited from ThePEG::Pointer::ReferenceCounted | |
CounterType | referenceCount () const |
Public Member Functions inherited from ThePEG::Named | |
Named (const string &newName=string()) | |
Named (const Named &)=default | |
const string & | name () const |
bool | operator== (const Named &other) const |
bool | operator< (const Named &other) const |
Static Public Member Functions | |
static void | Init () |
The standard Init function used to initialize the interfaces. More... | |
Static Public Member Functions inherited from Herwig::BtoSGammaHadronicMass | |
static void | Init () |
The standard Init function used to initialize the interfaces. More... | |
Static Public Member Functions inherited from ThePEG::Interfaced | |
static void | Init () |
Static Public Member Functions inherited from ThePEG::InterfacedBase | |
static void | Init () |
Static Public Member Functions inherited from ThePEG::Base | |
static void | Init () |
Protected Member Functions | |
Clone Methods. | |
virtual IBPtr | clone () const |
Make a simple clone of this object. More... | |
virtual IBPtr | fullclone () const |
Make a clone of this object, possibly modifying the cloned object to make it sane. More... | |
Standard Interfaced functions. | |
virtual void | doinit () |
Initialize this object after the setup phase before saving an EventGenerator to disk. More... | |
virtual void | doinitrun () |
Initialize this object. More... | |
Protected Member Functions inherited from Herwig::BtoSGammaHadronicMass | |
Energy | minMass () const |
Minimum mass. | |
Energy | maxMass () const |
Maximum mass. | |
InvEnergy | exponentialFermiFunction (Energy scale, Energy lambda, double a, InvEnergy norm, Energy2 lambda1) const |
Exponential function of the form, , where taken from hep-ph/9805303. More... | |
Protected Member Functions inherited from ThePEG::Interfaced | |
void | reporeg (IBPtr object, string name) const |
bool | setDefaultReference (PtrT &ptr, string classname, string objectname) |
Interfaced (const string &newName) | |
Interfaced (const Interfaced &i) | |
void | setGenerator (tEGPtr generator) |
Protected Member Functions inherited from ThePEG::InterfacedBase | |
InterfacedBase (string newName) | |
InterfacedBase (const InterfacedBase &i) | |
virtual void | readSetup (istream &is) |
virtual void | doupdate () |
virtual void | dofinish () |
virtual IVector | getReferences () |
virtual void | rebind (const TranslationMap &) |
virtual void | readSetup (istream &is) |
virtual void | doupdate () |
virtual void | dofinish () |
virtual IVector | getReferences () |
virtual void | rebind (const TranslationMap &) |
Protected Member Functions inherited from ThePEG::Pointer::ReferenceCounted | |
ReferenceCounted (const ReferenceCounted &) | |
ReferenceCounted & | operator= (const ReferenceCounted &) |
ReferenceCounted (const ReferenceCounted &) | |
ReferenceCounted & | operator= (const ReferenceCounted &) |
Protected Member Functions inherited from ThePEG::Named | |
const Named & | operator= (const Named &other) |
const string & | name (const string &newName) |
Private Member Functions | |
BtoSGammaKagan & | operator= (const BtoSGammaKagan &)=delete |
The assignment operator is private and must never be called. More... | |
Functions to calculate the mass spectrum | |
double | Delta (double y, double alphaS) const |
The derivative of the Sudakov form-factor from hep-ph/9805303. More... | |
double | semiLeptonicf () const |
Kinematic function from semi-leptonic decay for normaalisation. | |
double | s22 (double y) const |
function from hep-ph/9805303. More... | |
double | s27 (double y) const |
function from hep-ph/9805303. More... | |
double | s77 (double y) const |
function from hep-ph/9805303 More... | |
double | s78 (double y) const |
function from hep-ph/9805303 More... | |
double | s88 (double y) const |
function from hep-ph/9805303 More... | |
double | realG (double t) const |
The real part of the function from hep-ph/9805303. | |
double | imagG (double t) const |
The imaginary part of the function from hep-ph/9805303. | |
double | alphaS (Energy Q) |
Strong coupling at the scale . More... | |
void | calculateWilsonCoefficients () |
Calculate the wilson coefficients we need. | |
double | KNLO (double y) const |
The function at parton level from hep-ph/9805303. | |
Private Attributes | |
bool | _initialize |
Initialisation of mass spectrum. | |
Energy2 | _lambda2 |
The hadronic parameter from hep-ph/9805303. | |
Energy | _mt |
Quark masses and related parameters. More... | |
Energy | _mb |
bottom quark mass | |
Energy | _mc |
charm quark mass | |
Energy | _ms |
strange quark mass | |
double | _msovermb |
Ratio of the strange quark mass to the bottom quark mass. | |
double | _zratio |
The ratio of the charm to bottom quark masses squared, . | |
Energy | _mw |
Masses of other particles. More... | |
Energy | _mz |
the Z mass | |
Energy | _MB |
Mass of the decaying B meson. | |
Wilson coefficients, couplings and \f$\beta\f$-function coefficients | |
double | _c20 |
The leading order coefficient. | |
double | _c70 |
The leading order coefficient. | |
double | _c80 |
The leading order coefficient. | |
double | _beta0 |
First -function coefficient. | |
double | _beta1 |
Second -function coefficient. | |
double | _alpha |
The electromagentic coupling. | |
double | _alphaSZ |
The strong coupling at the Z mass. | |
Energy | _mub |
The renormalisation scale. | |
double | _alphaSM |
the strong coupling at the renormalisation scale . | |
double | _ckm |
The CKM perfactor for the decay. | |
double | _delta |
Pre-factor for the correction term involving . | |
Interpolator< double, double >::Ptr | _s22inter |
Interpolators for the integrate functions and related parameters. More... | |
Interpolator< double, double >::Ptr | _s27inter |
Interpolator for the function. | |
Interpolator< InvEnergy, Energy >::Ptr | _pmHinter |
Interpolator for the spectrum. | |
vector< Energy > | _mHinter |
Values of for the interpolation of the spectrum. | |
vector< InvEnergy > | _spectrum |
Values of the differential rate for the interpolation of the spectrum. | |
InvEnergy | _spectmax |
Maximum value of the spectrum for unweighting. | |
unsigned int | _maxtry |
Maximum number of tries for unweighting. | |
Energy | _fermilambda |
Parameters for the Fermi function. More... | |
double | _fermia |
The power from from hep-ph/9805303. | |
InvEnergy | _ferminorm |
The normalisation from hep-ph/9805303. | |
Energy2 | _fermilambda1 |
scale related to the kinetic energy of the b quark. | |
double | _ycut |
Techincal parameters for the integration of the spectrum. More... | |
double | _y |
Value of the energy fraction for which the integral is being performed. | |
double | _deltacut |
Cut-off on the photon energies. | |
unsigned int | _nsfunct |
Number of points for the interpolation of the s functions. | |
unsigned int | _nspect |
Number of points for the interpolation of the spectrum. | |
unsigned int | _iopt |
The function currently being integrated. | |
Friends | |
struct | KaganIntegrand |
Class for the integration is a friend to access private members. | |
typedef double | ValType |
typedef double | ArgType |
double | operator() (double x) const |
Members which return integrands. More... | |
InvEnergy | smeared (Energy kp) const |
Operator to return the integrand of the smeared function or Fermi function depending on the value of _iopt to be integrated. | |
Additional Inherited Members | |
Public Types inherited from ThePEG::InterfacedBase | |
enum | InitState |
Public Types inherited from ThePEG::Pointer::ReferenceCounted | |
typedef unsigned int | CounterType |
Public Attributes inherited from ThePEG::InterfacedBase | |
initializing | |
uninitialized | |
initialized | |
runready | |
Public Attributes inherited from ThePEG::Pointer::ReferenceCounted | |
const unsigned long | uniqueId |
Static Protected Member Functions inherited from ThePEG::Interfaced | |
static void | registerRepository (IBPtr) |
static void | registerRepository (IBPtr, string newName) |
The BtoSGammaKagan class implements the model of hep-ph/9805303 for the hadronic mass spectrum in decays.
Definition at line 30 of file BtoSGammaKagan.h.
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inlineprivate |
Strong coupling at the scale .
Q | The scale. |
Definition at line 256 of file BtoSGammaKagan.h.
References ThePEG::Constants::pi.
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inlineprotectedvirtual |
Make a simple clone of this object.
Implements ThePEG::InterfacedBase.
Definition at line 130 of file BtoSGammaKagan.h.
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virtual |
Output the setup information for the particle database.
os | The stream to output the information to |
header | Whether or not to output the information for MySQL |
create | Whether or not to add a statement creating the object |
Reimplemented from Herwig::BtoSGammaHadronicMass.
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inlineprivate |
The derivative of the Sudakov form-factor from hep-ph/9805303.
y | Ratio . |
alphaS | The strong coupling, . |
Definition at line 174 of file BtoSGammaKagan.h.
References ThePEG::Constants::pi.
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protectedvirtual |
Initialize this object after the setup phase before saving an EventGenerator to disk.
InitException | if object could not be initialized properly. |
Reimplemented from ThePEG::InterfacedBase.
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protectedvirtual |
Initialize this object.
Called in the run phase just before a run begins.
Reimplemented from ThePEG::InterfacedBase.
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inlineprotectedvirtual |
Make a clone of this object, possibly modifying the cloned object to make it sane.
Reimplemented from ThePEG::InterfacedBase.
Definition at line 136 of file BtoSGammaKagan.h.
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virtual |
Returns the hadronic mass.
mb | The mass of the decaying B meson |
mquark | The minimum mass of the hadronic system based on the consistuent quark masses. |
Implements Herwig::BtoSGammaHadronicMass.
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static |
The standard Init function used to initialize the interfaces.
Called exactly once for each class by the class description system before the main function starts or when this class is dynamically loaded.
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inline |
Members which return integrands.
Operator to return the integrand for the function or functions of hep-ph/9805303 depending on the value of _iopt to be integrated
Definition at line 98 of file BtoSGammaKagan.h.
References sqr().
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privatedelete |
The assignment operator is private and must never be called.
In fact, it should not even be implemented.
void Herwig::BtoSGammaKagan::persistentInput | ( | PersistentIStream & | is, |
int | version | ||
) |
Function used to read in object persistently.
is | the persistent input stream read from. |
version | the version number of the object when written. |
void Herwig::BtoSGammaKagan::persistentOutput | ( | PersistentOStream & | os | ) | const |
Function used to write out object persistently.
os | the persistent output stream written to. |
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inlineprivate |
function from hep-ph/9805303.
Due to the integration required this function is computed by interpolation.
y | Ratio . |
Definition at line 193 of file BtoSGammaKagan.h.
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inlineprivate |
function from hep-ph/9805303.
Due to the integration required this function is computed by interpolation.
y | Ratio . |
Definition at line 200 of file BtoSGammaKagan.h.
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inlineprivate |
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inlineprivate |
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inlineprivate |
function from hep-ph/9805303
y | Ratio . |
Definition at line 224 of file BtoSGammaKagan.h.
References sqr().
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private |
Parameters for the Fermi function.
The parameter from hep-ph/9805303.
Definition at line 449 of file BtoSGammaKagan.h.
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private |
Quark masses and related parameters.
The top quark mass
Definition at line 292 of file BtoSGammaKagan.h.
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private |
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private |
Interpolators for the integrate functions and related parameters.
Interpolator for the function
Definition at line 409 of file BtoSGammaKagan.h.
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private |
Techincal parameters for the integration of the spectrum.
Cut-off parameter to avoid the singularity at y=1
Definition at line 474 of file BtoSGammaKagan.h.