ThePEG
2.2.1
|
The QuarksToHadronsDecayer class inherits from Decayer and is able to decay particles to (2 or 4) quarks which then are decayed to hadrons according to phase space. More...
#include <QuarksToHadronsDecayer.h>
Public Member Functions | |
virtual int | getN (Energy m0, Energy summq, int Nq) const |
Get the number of hadrons to be produced, given the mass of the decaying particle, m0, and the number, Nq and summed masses of the quarks, summq. | |
virtual PVector | getHadrons (int Nh, tcPDVector quarks) const |
Produce Nh hadrons from the specified quarks. More... | |
virtual void | distribute (const Particle &parent, PVector &children) const |
Distribute the produced children in phase space. More... | |
virtual double | reweight (const Particle &parent, const PVector &children) const |
Called by distribute() to reweight the default flat phase spece. More... | |
int | fixedN () const |
Return the fixed number of hadrons to be produced. More... | |
int | minN () const |
Return the minimum number of hadrons to be produced. | |
double | c1 () const |
Return the parameter used for the multiplicity distriution. | |
Energy | c2 () const |
Return the parameter used for the multiplicity distriution. | |
double | c3 () const |
Return the parameter used for the multiplicity distriution. | |
tcFlavGenPtr | flavourGenerator () const |
Return a pointer to the flavour generator to be used. | |
Standard constructors and destructors. | |
QuarksToHadronsDecayer () | |
Default constructor. | |
virtual | ~QuarksToHadronsDecayer () |
Destructor. | |
Virtual functions required by the Decayer class. | |
virtual bool | accept (const DecayMode &dm) const |
Check if this decayer can perfom the decay specified by the given decay mode. More... | |
virtual ParticleVector | decay (const DecayMode &dm, const Particle &p) const |
Perform a decay for a given DecayMode and a given Particle instance. 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 ThePEG::Decayer | |
Ptr< Amplitude >::pointer | amplitude () const |
Return an amplitude associated with this decay matrix element. More... | |
virtual bool | needsFullStep () const |
Return true if this Decayer need to access the full current step when a particle is decayed. More... | |
virtual ParticleVector | decay (const DecayMode &dm, const Particle &p, Step &step) const |
Perform a decay for a given DecayMode and a given Particle instance. More... | |
virtual double | brat (const DecayMode &dm, const ParticleData &pd, double oldbrat) const |
Calculate branching ratio. More... | |
virtual double | brat (const DecayMode &dm, const Particle &p, double oldbrat) const |
Calculate branching ratio. More... | |
virtual ParticleVector | getChildren (const DecayMode &dm, const Particle &parent) const |
Produce the children. More... | |
virtual void | finalBoost (const Particle &parent, const ParticleVector &children) const |
Boost the decay products. More... | |
virtual void | setScales (const Particle &parent, const ParticleVector &children) const |
Set the scales. More... | |
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::HandlerBaseT< UseRandom > | |
double | rnd () const |
Return a simple flat random number in the range ]0,1[. | |
double | rnd (double xu) const |
Return a simple flat random number in the range ]0,xu[. | |
double | rnd (double xl, double xu) const |
Return a simple flat random number in the range ]xl,xu[. | |
bool | rndbool () const |
Return true with 50% probability. | |
bool | rndbool (double p) const |
Return a true with probability p. | |
bool | rndbool (double p1, double p2) const |
Return a true with probability p1/(p1+p2). | |
int | rndsign (double p1, double p2, double p3) const |
Return -1, 0, or 1 with relative probabilities p1, p2, p3. | |
int | rnd2 (double p0, double p1) const |
Return an integer with probability p /(p0+p1). | |
int | rnd3 (double p0, double p1, double p2) const |
Return an integer with probability p /(p0+p1+p2). | |
int | rnd4 (double p0, double p1, double p2, double p3) const |
Return an integer/ with probability p (p0+p1+p2+p3). | |
long | irnd (long xu=2) const |
Return a simple flat random integrer number in the range [0,xu[. | |
long | irnd (long xl, long xu) const |
Return a simple flat random integrer number in the range [xl,xu[. | |
const StandardModelBase & | SM () const |
Return a reference to the object containing the standard model parameters for this run. | |
tSMPtr | standardModel () const |
Return a pointer to the object containing the standard model parameters for this run. | |
virtual | ~HandlerBaseT () |
Destructor. | |
Public Member Functions inherited from ThePEG::Interfaced | |
virtual | ~Interfaced () |
Empty virtual destructor. | |
virtual bool | defaultInit () |
Functions which are to be used during the actual event generation, after the setup is complete. More... | |
PPtr | getParticle (PID) const |
Create a new Particle instance given a id number. | |
PDPtr | getParticleData (PID) const |
Return a pointer to the ParticleData object corresponding to the given id number. | |
bool | used () const |
Returns true if this object has actally been used. | |
void | useMe () const |
Should be called to indicate that this object has actually been used. | |
tEGPtr | generator () const |
Return a pointer to the EventGenerator controlling the run. More... | |
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::InterfacedBase | |
virtual | ~InterfacedBase () |
The virtual (empty) destructor;. | |
string | fullName () const |
Returns the full name of this object including its path, e.g. More... | |
string | name () const |
Returns the name of this object, without the path. | |
string | path () const |
Returns the path to this object including the trailing '/'. More... | |
string | comment () const |
Returns a comment assigned to this object. | |
void | setup (istream &is) |
Read setup info from a standard istream is. More... | |
virtual void | debugme () const |
Print out debugging information for this object on std::cerr. More... | |
void | update () |
Calls the doupdate() function with recursion prevention. | |
void | init () |
Calls the doinit() function with recursion prevention. | |
virtual bool | preInitialize () const |
Return true if this object needs to be initialized before all other objects (except those for which this function also returns true). More... | |
void | initrun () |
Calls the doinitrun() function with recursion prevention. | |
void | finish () |
Calls the dofinish() function with recursion prevention. | |
void | touch () |
This function should be called every time something in this object has changed in a way that a sanity check with update() is needed. | |
void | reset () |
Set the state of this object to uninitialized. | |
void | clear () |
Calls reset() and unTouch(). | |
InitState | state () const |
Return the state of initialization of this object. | |
bool | locked () const |
Return true if the BaseRepository is not allowed to change the state of this object. | |
bool | touched () const |
Return true if the state of this object has been changed since the last call to update(). | |
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::Base | |
virtual | ~Base () |
The virtual destructor. | |
void | debug () const |
Print out debugging information for this object on std::cerr. More... | |
Public Member Functions inherited from ThePEG::Pointer::ReferenceCounted | |
CounterType | referenceCount () const |
Return the reference count. | |
Public Member Functions inherited from ThePEG::Named | |
Named (const string &newName=string()) | |
Constructor with name. | |
Named (const Named &)=default | |
Explicit default copy-constructor (too avoid compiler warnings) | |
const string & | name () const |
Return name. | |
bool | operator== (const Named &other) const |
Test for equality. | |
bool | operator< (const Named &other) const |
Lexicographical comparison. | |
Static Public Member Functions | |
static void | Init () |
Standard Init function used to initialize the interfaces. | |
Static Public Member Functions inherited from ThePEG::Decayer | |
static ParticleVector | DecayParticle (tPPtr parent, Step &step, long maxtry=1000) |
Static function to administer the decay of a particle. More... | |
static void | Init () |
Standard Init function used to initialize the interfaces. | |
Static Public Member Functions inherited from ThePEG::HandlerBase | |
static void | Init () |
Standard Init function used to initialize the interface. | |
Static Public Member Functions inherited from ThePEG::Interfaced | |
static void | Init () |
Standard Init function. | |
Static Public Member Functions inherited from ThePEG::InterfacedBase | |
static void | Init () |
Standard Init function. | |
Static Public Member Functions inherited from ThePEG::Base | |
static void | Init () |
The standard Init function used to initialize the interfaces. More... | |
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... | |
Protected Member Functions inherited from ThePEG::Interfaced | |
void | reporeg (IBPtr object, string name) const |
Register the given object in the Repository with the given name in a subdirectory with the same name as this object. More... | |
template<typename PtrT > | |
bool | setDefaultReference (PtrT &ptr, string classname, string objectname) |
If the pointer, ptr, to an object is not set, create an object of class classname and register it with the Repository with the given objectname in a sib-directory with the same name as this object. | |
Interfaced () | |
Protected default constructor. | |
Interfaced (const string &newName) | |
Protected constructor taking a name as argument. | |
Interfaced (const Interfaced &i) | |
Protected copy-constructor. | |
void | setGenerator (tEGPtr generator) |
Protected function to reset the generator pointer, required for automatic decayer generation in Herwig++ BSM models. | |
Protected Member Functions inherited from ThePEG::InterfacedBase | |
InterfacedBase () | |
Protected default constructor. | |
InterfacedBase (string newName) | |
Protected constructor with the name given as argument. | |
InterfacedBase (const InterfacedBase &i) | |
Protected copy-constructor. | |
virtual void | readSetup (istream &is) |
Read setup info from a standard istream is. More... | |
virtual void | doupdate () |
Check sanity of the object during the setup phase. More... | |
virtual void | doinit () |
Initialize this object after the setup phase before saving an EventGenerator to disk. More... | |
virtual void | doinitrun () |
Initialize this object. More... | |
virtual void | dofinish () |
Finalize this object. More... | |
virtual IVector | getReferences () |
Return a vector of all pointers to Interfaced objects used in this object. More... | |
virtual void | rebind (const TranslationMap &) |
Rebind pointer to other Interfaced objects. More... | |
Protected Member Functions inherited from ThePEG::Pointer::ReferenceCounted | |
ReferenceCounted () | |
Default constructor. | |
ReferenceCounted (const ReferenceCounted &) | |
Copy-constructor. | |
ReferenceCounted & | operator= (const ReferenceCounted &) |
Assignment. | |
Protected Member Functions inherited from ThePEG::Named | |
const Named & | operator= (const Named &other) |
Assignment. | |
const string & | name (const string &newName) |
Set new name. | |
Private Member Functions | |
QuarksToHadronsDecayer & | operator= (const QuarksToHadronsDecayer &)=delete |
Private and non-existent assignment operator. | |
Private Attributes | |
int | theFixedN |
The fixed number of hadrons to be produced. More... | |
int | theMinN |
The minimum hadrons to be produced. | |
double | theC1 |
The parameter of the multiplicity distribution. | |
Energy | theC2 |
The parameter of the multiplicity distribution. | |
double | theC3 |
The parameter of the multiplicity distribution. | |
FlavGenPtr | theFlavourGenerator |
The object in charge of generating hadrons spieces from given quark flavours. | |
Static Private Attributes | |
static ClassDescription< QuarksToHadronsDecayer > | initQuarksToHadronsDecayer |
Describe a concrete class with persistent data. | |
Additional Inherited Members | |
Public Types inherited from ThePEG::InterfacedBase | |
enum | InitState { initializing = -1, uninitialized = 0, initialized = 1, runready = 2 } |
Enumeration reflecting the state of an InterfacedBase object. More... | |
Public Types inherited from ThePEG::Pointer::ReferenceCounted | |
typedef unsigned int | CounterType |
The integer type used for counting. | |
Public Attributes inherited from ThePEG::Pointer::ReferenceCounted | |
const unsigned long | uniqueId |
The unique ID. More... | |
Static Protected Member Functions inherited from ThePEG::Interfaced | |
static void | registerRepository (IBPtr) |
Register an Interfaced object with the Repository. | |
static void | registerRepository (IBPtr, string newName) |
Register an Interfaced object with the Repository, giving it a name. | |
The QuarksToHadronsDecayer class inherits from Decayer and is able to decay particles to (2 or 4) quarks which then are decayed to hadrons according to phase space.
The number of final hadrons can either be given by a fixed number or as a Gaussian multiplicity distribution centered around and a width , where , is the mass of the decaying particle, the sum of the quark masses and real parameters.
Definition at line 35 of file QuarksToHadronsDecayer.h.
|
virtual |
Check if this decayer can perfom the decay specified by the given decay mode.
dm | the DecayMode describing the decay. |
Implements ThePEG::Decayer.
Reimplemented in ThePEG::WeakToHadronsDecayer.
Referenced by QuarksToHadronsDecayer().
|
protectedvirtual |
Make a simple clone of this object.
Implements ThePEG::InterfacedBase.
Reimplemented in ThePEG::WeakToHadronsDecayer.
Referenced by flavourGenerator().
|
virtual |
Perform a decay for a given DecayMode and a given Particle instance.
Implements ThePEG::Decayer.
Referenced by QuarksToHadronsDecayer().
|
virtual |
Distribute the produced children in phase space.
This default version uses a flat phase space which can be reweighted by overriding the reweight() function.
Referenced by QuarksToHadronsDecayer().
|
inline |
Return the fixed number of hadrons to be produced.
If less than 2, the number is instead given by a gaussian multiplicity distribution.
Definition at line 110 of file QuarksToHadronsDecayer.h.
References theFixedN.
|
protectedvirtual |
Make a clone of this object, possibly modifying the cloned object to make it sane.
Reimplemented from ThePEG::InterfacedBase.
Reimplemented in ThePEG::WeakToHadronsDecayer.
Referenced by flavourGenerator().
|
virtual |
Produce Nh hadrons from the specified quarks.
The last quark is considered to be a spectator quark.
Reimplemented in ThePEG::WeakToHadronsDecayer.
Referenced by QuarksToHadronsDecayer().
void ThePEG::QuarksToHadronsDecayer::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. |
Referenced by flavourGenerator().
void ThePEG::QuarksToHadronsDecayer::persistentOutput | ( | PersistentOStream & | os | ) | const |
Function used to write out object persistently.
os | the persistent output stream written to. |
Referenced by flavourGenerator().
|
virtual |
Called by distribute() to reweight the default flat phase spece.
Can be overridden by sub-classes and should return a number between 0 and 1. This version returns 1.
Reimplemented in ThePEG::WeakToHadronsDecayer.
Referenced by QuarksToHadronsDecayer().
|
private |
The fixed number of hadrons to be produced.
If less than 2, the number is instead given by a gaussian multiplicity distribution.
Definition at line 190 of file QuarksToHadronsDecayer.h.
Referenced by fixedN().