Herwig
7.2.1
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The SMHiggsWidthGenerator class calculates the width for the Standard Model Higgs boson. More...
#include <SMHiggsWidthGenerator.h>
Public Member Functions | |
SMHiggsWidthGenerator () | |
The default constructor. | |
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::GenericWidthGenerator | |
GenericWidthGenerator () | |
Default constructor. | |
virtual bool | accept (const ParticleData &part) const |
Return true if this width generator can handle the given particle type. More... | |
virtual void | dataBaseOutput (ofstream &output, bool header=true) |
Output the initialisation info for the database. More... | |
virtual Length | lifeTime (const ParticleData &, Energy m, Energy w) const |
Given a particle type and a mass and a width of an instance of that particle type, generate a life time. | |
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::WidthGenerator | |
Energy | width (const Particle &) const |
Energy | width (const Particle &) const |
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::GenericWidthGenerator | |
static void | Init () |
Standard Init function used to initialize the interfaces. | |
Static Public Member Functions inherited from ThePEG::WidthGenerator | |
static void | Init () |
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 | |
DecayMap | branching (Energy scale, const ParticleData &) const |
Return the branching ratios at the given scale. More... | |
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... | |
Routines to calculate Higgs width. | |
double | HwDoubleBW (double x, double y) const |
Calculates the double Breit-Wigner Integral a-la FORTRAN HERWIG. More... | |
Complex | HwW2 (double tau) const |
Calculate a loop function for the triangle vertex GGH/AAH. More... | |
Standard Interfaced functions. | |
virtual void | doinit () |
Initialize this object after the setup phase before saving an EventGenerator to disk. More... | |
Protected Member Functions inherited from Herwig::GenericWidthGenerator | |
Energy | partial2BodyWidth (int iloc, Energy q) const |
The width for on-shell particles. More... | |
virtual Energy | partial2BodyWidth (int iloc, Energy m0, Energy m1, Energy m2) const |
The width for outgoing particles which can be off-shell. More... | |
virtual void | setupMode (tcDMPtr mode, tDecayIntegratorPtr decayer, unsigned int imode) |
Perform the set up for a mode in classes inheriting from this one. More... | |
tPDPtr | particle () const |
Access to the particle dat for inheriting classes. | |
void | particle (tPDPtr in) |
Set the particle. | |
int | MEcode (int imode) const |
Matrix element code for a given mode. More... | |
double | MEcoupling (int imode) const |
Coupling for a given mode. More... | |
Energy | mass () const |
The on-shell mass of the particle. | |
bool | initialize () const |
Access to the decay modes. More... | |
bool | output () const |
Output option for use by the inheriting classes. | |
vector< tDMPtr > | decayModes () const |
Access to the DecayModes. | |
virtual void | dofinish () |
Finalize this object. More... | |
virtual void | rebind (const TranslationMap &trans) |
Rebind pointer to other Interfaced objects. More... | |
virtual IVector | getReferences () |
Return a vector of all pointers to Interfaced objects used in this object. 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 | doinitrun () |
virtual void | readSetup (istream &is) |
virtual void | doupdate () |
virtual void | doinitrun () |
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 | |
virtual pair< Energy, Energy > | width (Energy, const ParticleData &) const |
Return the total width and the sum of the partial widths for modes which are used. | |
Energy | partialWidth (int imode, Energy mH) const |
Calculate the partial width for a given mode. More... | |
SMHiggsWidthGenerator & | operator= (const SMHiggsWidthGenerator &)=delete |
The assignment operator is private and must never be called. More... | |
Virtual functions to be overridden from based class | |
virtual Energy | width (const ParticleData &, Energy m) const |
Given a particle type and a mass of an instance of that particle type, calculate a width. | |
virtual DecayMap | rate (const ParticleData &) const |
Return decay map for the given particle type. | |
virtual DecayMap | rate (const Particle &) |
Return a decay map for a given Particle instance. | |
Private Attributes | |
unsigned int | widthopt_ |
Type of the Higgs width used (options: fixed, LO running, NLL corrected running) | |
double | offshell_ |
Number of times the width the Higgs is allowed to be off-shell. | |
map< int, int > | locMap_ |
Map between location in decay modes vector and code here. | |
Energy | mw_ |
Particle properties extracted at initialization. More... | |
Energy | mz_ |
Mass of the Z boson. | |
Energy | gamw_ |
Width of the W boson. | |
Energy | gamz_ |
Width of the Z boson. | |
vector< Energy > | qmass_ |
Masses of the quarks. | |
vector< Energy > | lmass_ |
Masses of the leptons. | |
double | sw2_ |
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double | ca_ |
The colour factor. | |
double | cf_ |
The colour factor. | |
Energy | qlast_ |
Storage of parameters for speed. More... | |
Energy | lambdaQCD_ |
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double | alphaEM_ |
The electromagnetic coupling. | |
double | alphaS_ |
The strong coupling. | |
double | cd_ |
Correction factor for . | |
Energy2 | gfermiinv_ |
Fermi constant. | |
double | gam0_ |
The anomalous dimension for . | |
double | beta0_ |
The function coefficient for . | |
Additional Inherited Members | |
Public Types inherited from ThePEG::WidthGenerator | |
typedef Selector< tDMPtr > | DecayMap |
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 SMHiggsWidthGenerator class calculates the width for the Standard Model Higgs boson.
Definition at line 27 of file SMHiggsWidthGenerator.h.
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protected |
Return the branching ratios at the given scale.
scale | The off shell-mass of the Higgs |
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protectedvirtual |
Make a simple clone of this object.
Reimplemented from Herwig::GenericWidthGenerator.
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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 Herwig::GenericWidthGenerator.
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protectedvirtual |
Make a clone of this object, possibly modifying the cloned object to make it sane.
Reimplemented from Herwig::GenericWidthGenerator.
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protected |
Calculates the double Breit-Wigner Integral a-la FORTRAN HERWIG.
It is used in NLL corrected Higgs width for H->WW/ZZ, x = (M_V/M_H)^2, y=M_V*G_V/(M_H)^2, where M_V/G_V - V-boson mass/width
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protected |
Calculate a loop function for the triangle vertex GGH/AAH.
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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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privatedelete |
The assignment operator is private and must never be called.
In fact, it should not even be implemented.
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privatevirtual |
Calculate the partial width for a given mode.
mH | The Higgs masses |
imode | The decay mode |
Reimplemented from Herwig::GenericWidthGenerator.
void Herwig::SMHiggsWidthGenerator::persistentInput | ( | PersistentIStream & | is, |
int | version | ||
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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::SMHiggsWidthGenerator::persistentOutput | ( | PersistentOStream & | os | ) | const |
Function used to write out object persistently.
os | the persistent output stream written to. |
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private |
Particle properties extracted at initialization.
Mass of the W boson
Definition at line 183 of file SMHiggsWidthGenerator.h.
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mutableprivate |
Storage of parameters for speed.
The last scale
Definition at line 233 of file SMHiggsWidthGenerator.h.