Herwig 7.3.0
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The WeakPartonicDecayer class is designed to replace the HeavyDecayer class which implements the partonic decays of hadrons containing a heavy quark in the same way as in FORTRAN Herwig. More...
#include <WeakPartonicDecayer.h>
Public Member Functions | |
WeakPartonicDecayer () | |
The default constructor. | |
virtual bool | accept (tcPDPtr parent, const tPDVector &children) const |
Check if this decayer can perfom the decay for a particular mode. | |
virtual ParticleVector | decay (const Particle &parent, const tPDVector &children) const |
Perform the decay of the particle to the specified decay products. | |
virtual void | dataBaseOutput (ofstream &os, bool header) const |
Output the setup information for the particle database. | |
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PartonicDecayerBase () | |
The default constructor. | |
virtual ParticleVector | decay (const DecayMode &dm, const Particle &p) const |
Perform a decay for a given DecayMode and a given Particle instance. | |
void | persistentOutput (PersistentOStream &os) const |
Function used to write out object persistently. | |
void | persistentInput (PersistentIStream &is, int version) |
Function used to read in object persistently. | |
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HwDecayerBase () | |
The default constructor. | |
virtual bool | accept (const DecayMode &dm) const |
Check if this decayer can perfom the decay specified by the given decay mode. | |
virtual POWHEGType | hasPOWHEGCorrection () |
Has a POWHEG style correction. | |
virtual bool | hasMECorrection () |
Has an old fashioned ME correction. | |
virtual void | initializeMECorrection (RealEmissionProcessPtr, double &, double &) |
Initialize the ME correction. | |
virtual RealEmissionProcessPtr | applyHardMatrixElementCorrection (RealEmissionProcessPtr) |
Apply the hard matrix element correction to a given hard process or decay. | |
virtual bool | softMatrixElementVeto (PPtr parent, PPtr progenitor, const bool &fs, const Energy &highestpT, const vector< tcPDPtr > &ids, const double &z, const Energy &scale, const Energy &pT) |
Apply the soft matrix element correction. | |
virtual RealEmissionProcessPtr | generateHardest (RealEmissionProcessPtr) |
Apply the POWHEG style correction. | |
void | persistentOutput (PersistentOStream &os) const |
Function used to write out object persistently. | |
void | persistentInput (PersistentIStream &is, int version) |
Function used to read in object persistently. | |
bool | initialize () const |
Access to the initialize variable. | |
bool | databaseOutput () const |
Access the database output variable. | |
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void | persistentOutput (PersistentOStream &os) const |
void | persistentInput (PersistentIStream &is, int version) |
virtual bool | accept (const DecayMode &dm) const=0 |
virtual bool | needsFullStep () const |
virtual ParticleVector | decay (const DecayMode &dm, const Particle &p) const=0 |
virtual ParticleVector | decay (const DecayMode &dm, const Particle &p, Step &step) const |
virtual double | brat (const DecayMode &dm, const ParticleData &pd, double oldbrat) const |
virtual double | brat (const DecayMode &dm, const Particle &p, double oldbrat) const |
virtual ParticleVector | getChildren (const DecayMode &dm, const Particle &parent) const |
virtual void | finalBoost (const Particle &parent, const ParticleVector &children) const |
virtual void | setScales (const Particle &parent, const ParticleVector &children) const |
Ptr< Amplitude >::pointer | amplitude () const |
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double | rnd () const |
double | rnd (double xu) const |
double | rnd (double xl, double xu) const |
bool | rndbool () const |
bool | rndbool (double p) const |
bool | rndbool (double p1, double p2) const |
int | rndsign (double p1, double p2, double p3) const |
int | rnd2 (double p0, double p1) const |
int | rnd3 (double p0, double p1, double p2) const |
int | rnd4 (double p0, double p1, double p2, double p3) const |
long | irnd (long xu=2) const |
long | irnd (long xl, long xu) const |
const StandardModelBase & | SM () const |
tSMPtr | standardModel () const |
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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 |
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string | fullName () const |
string | name () const |
string | path () const |
string | comment () const |
void | setup (istream &is) |
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 |
virtual IBPtr | fullclone () const |
void | persistentOutput (PersistentOStream &os) const |
void | persistentInput (PersistentIStream &is, int version) |
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 |
virtual IBPtr | fullclone () const |
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void | debug () const |
virtual void | debugme () const |
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CounterType | referenceCount () const |
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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 |
Clone Methods. | |
int | MECode |
The code for the matrix element being used. | |
double | _radprob |
Probablilty of radiation giving an extra quark-antiquark pair. | |
unsigned int | _maxtry |
Maximum number of tries to generate the kinematics. | |
double | _threemax |
Maximum weight for three-body decays. | |
double | _fourmax |
Maximum weight for four-body decays. | |
virtual IBPtr | clone () const |
Make a simple clone of this object. | |
virtual IBPtr | fullclone () const |
Make a clone of this object, possibly modifying the cloned object to make it sane. | |
double | threeBodyMatrixElement (tcPDPtr dec, const RhoDMatrix &rhoin, Lorentz5Momentum &pdec, ParticleVector &partons) const |
Compute \(\rho\) matrix for tau decay in three body case. | |
double | fourBodyMatrixElement (Lorentz5Momentum &p0, Lorentz5Momentum &p1, Lorentz5Momentum &p2, Lorentz5Momentum &p3, Lorentz5Momentum &pg, bool Wcol, bool &initial) const |
Four body matrix element for weak decay including an extra gluon. | |
WeakPartonicDecayer & | operator= (const WeakPartonicDecayer &)=delete |
The assignment operator is private and must never be called. | |
Functions used by the persistent I/O system. | |
void | persistentOutput (PersistentOStream &os) const |
Function used to write out object persistently. | |
void | persistentInput (PersistentIStream &is, int version) |
Function used to read in object persistently. | |
static void | Init () |
The standard Init function used to initialize the interfaces. | |
static double | VAWt (Energy2, Energy2, Energy2, InvEnergy4) |
Weighting of phase space for V-A matrix elements. | |
Additional Inherited Members | |
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enum | POWHEGType { No , ISR , FSR , Both } |
Virtual members to be overridden by inheriting classes which implement hard corrections. More... | |
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enum | InitState |
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typedef unsigned int | CounterType |
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static void | Init () |
The standard Init function used to initialize the interfaces. | |
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static void | Init () |
The standard Init function used to initialize the interfaces. | |
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static void | Init () |
static ParticleVector | DecayParticle (tPPtr parent, Step &step, long maxtry=1000) |
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static void | Init () |
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static void | Init () |
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static void | Init () |
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static void | Init () |
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initializing | |
uninitialized | |
initialized | |
runready | |
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const unsigned long | uniqueId |
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virtual void | doinit () |
Initialize this object after the setup phase before saving an EventGenerator to disk. | |
bool | duplicateMode (const Particle &parent, const vector< tPPtr > &hadrons) const |
Check hadrons produced in a partonic hadron decay do not reproduce an inclusive mode. | |
PVector | shower (const Particle &parent, ParticleVector &partons) const |
Perform the parton shower. | |
bool | timeLikeShower (tShowerParticlePtr particle, Branching fb, bool first, PVector &output) const |
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virtual void | dofinish () |
Finalize this object. | |
void | fixRho (RhoDMatrix &) const |
Set rho to be diagonal if no correlations. | |
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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) |
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virtual void | readSetup (istream &is) |
virtual void | doupdate () |
virtual void | doinit () |
virtual void | doinitrun () |
virtual void | dofinish () |
virtual IVector | getReferences () |
virtual void | rebind (const TranslationMap &) |
virtual IBPtr | clone () const=0 |
InterfacedBase (string newName) | |
InterfacedBase (const InterfacedBase &i) | |
virtual void | readSetup (istream &is) |
virtual void | doupdate () |
virtual void | doinit () |
virtual void | doinitrun () |
virtual void | dofinish () |
virtual IVector | getReferences () |
virtual void | rebind (const TranslationMap &) |
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ReferenceCounted (const ReferenceCounted &) | |
ReferenceCounted & | operator= (const ReferenceCounted &) |
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const Named & | operator= (const Named &other) |
const string & | name (const string &newName) |
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static void | registerRepository (IBPtr) |
static void | registerRepository (IBPtr, string newName) |
The WeakPartonicDecayer class is designed to replace the HeavyDecayer class which implements the partonic decays of hadrons containing a heavy quark in the same way as in FORTRAN Herwig.
There are a number of major changes
Three body modes of the form \(q g \bar{q}\) are supported for penguin mediated weak decays.
Two types of matrix element are supported for this decay
In addition for the two-body decays and the three-bopdy spectator decays using the weka V-A matrix element the option of adding an extra gluon to increase the multiplicity of hadrons is included
Definition at line 52 of file WeakPartonicDecayer.h.
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virtual |
Check if this decayer can perfom the decay for a particular mode.
parent | The decaying particle |
children | The decay products |
Implements Herwig::PartonicDecayerBase.
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protectedvirtual |
Make a simple clone of this object.
Implements ThePEG::InterfacedBase.
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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 |
Reimplemented from Herwig::PartonicDecayerBase.
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virtual |
Perform the decay of the particle to the specified decay products.
parent | The decaying particle |
children | The decay products |
Implements Herwig::PartonicDecayerBase.
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protected |
Four body matrix element for weak decay including an extra gluon.
p0 | Momentum of decaying quark |
p1 | Momentum of connected decay product |
p2 | Momentum of first parton from W decay |
p3 | Momentum of second parton from W decay |
pg | Momentum of gluon from W decay |
Wcol | Whether or not W products are coloured |
initial | Whether the radiation is from the decaying quark/first decay product or W decay products |
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protectedvirtual |
Make a clone of this object, possibly modifying the cloned object to make it sane.
Reimplemented from ThePEG::InterfacedBase.
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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.
void Herwig::WeakPartonicDecayer::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::WeakPartonicDecayer::persistentOutput | ( | PersistentOStream & | os | ) | const |
Function used to write out object persistently.
os | the persistent output stream written to. |
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protected |
Compute \(\rho\) matrix for tau decay in three body case.
dec | ParticleData object of decaying quark |
rhoin | Spin density matrix for the decaying quark |
pdec | The momentum of the decaying particle |
partons | The partons produced |
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private |
Maximum weight for four-body decays.
Definition at line 195 of file WeakPartonicDecayer.h.
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private |
Maximum number of tries to generate the kinematics.
Definition at line 185 of file WeakPartonicDecayer.h.
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private |
Probablilty of radiation giving an extra quark-antiquark pair.
Definition at line 180 of file WeakPartonicDecayer.h.
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private |
Maximum weight for three-body decays.
Definition at line 190 of file WeakPartonicDecayer.h.
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private |
The code for the matrix element being used.
Definition at line 175 of file WeakPartonicDecayer.h.