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Herwig  7.1.4
Herwig::KinematicsReconstructor Class Referenceabstract

This class is responsible for the kinematical reconstruction after each showering step, and also for the necessary Lorentz boosts in order to preserve energy-momentum conservation in the overall collision, and also the invariant mass and the rapidity of the hard subprocess system. More...

#include <KinematicsReconstructor.h>

Inheritance diagram for Herwig::KinematicsReconstructor:

Public Member Functions

virtual bool reconstructHardJets (ShowerTreePtr hard, const map< tShowerProgenitorPtr, pair< Energy, double > > &pt, ShowerInteraction type, bool switchRecon) const =0
 Methods to reconstruct the kinematics of a scattering or decay process. More...
 
virtual bool reconstructDecayJets (ShowerTreePtr decay, ShowerInteraction type) const =0
 Given the ShowerTree for a decay shower the method does the reconstruction of the jets, including the appropriate boosts (kinematics reshufflings) needed to conserve the total energy-momentum of the collision and preserving the invariant mass and the rapidity of the hard subprocess system.
 
virtual bool deconstructDecayJets (HardTreePtr decay, ShowerInteraction) const =0
 Methods to invert the reconstruction of the shower for a scattering or decay process and calculate the variables used to generate the shower given the particles produced. More...
 
virtual bool deconstructHardJets (HardTreePtr hard, ShowerInteraction) const =0
 Given the particles, with a history which we wish to interpret as a shower reconstruct the variables used to generate the shower for a hard process.
 
- 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 IBPtr fullclone () const
 
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())
 
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 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 ()
 

Private Member Functions

KinematicsReconstructoroperator= (const KinematicsReconstructor &)
 The assignment operator is private and must never be called. More...
 

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
 
- 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
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 &)
 
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 &)
 
- Protected Member Functions inherited from ThePEG::Pointer::ReferenceCounted
 ReferenceCounted (const ReferenceCounted &)
 
ReferenceCountedoperator= (const ReferenceCounted &)
 
 ReferenceCounted (const ReferenceCounted &)
 
ReferenceCountedoperator= (const ReferenceCounted &)
 
- Protected Member Functions inherited from ThePEG::Named
const Namedoperator= (const Named &other)
 
const string & name (const string &newName)
 
- Static Protected Member Functions inherited from ThePEG::Interfaced
static void registerRepository (IBPtr)
 
static void registerRepository (IBPtr, string newName)
 

Detailed Description

This class is responsible for the kinematical reconstruction after each showering step, and also for the necessary Lorentz boosts in order to preserve energy-momentum conservation in the overall collision, and also the invariant mass and the rapidity of the hard subprocess system.

In the case of multi-step showering, there will be not unnecessary kinematical reconstructions.

Notice:

  • although we often use the term "jet" in either methods or variables names, or in comments, which could appear applicable only for QCD showering, there is indeed no "dynamics" represented in this class: only kinematics is involved, as the name of this class remainds. Therefore it can be used for any kind of showers (QCD-,QED-,EWK-,... bremsstrahlung).
See also
The interfaces defined for KinematicsReconstructor.

Definition at line 54 of file KinematicsReconstructor.h.

Member Function Documentation

◆ deconstructDecayJets()

virtual bool Herwig::KinematicsReconstructor::deconstructDecayJets ( HardTreePtr  decay,
ShowerInteraction   
) const
pure virtual

Methods to invert the reconstruction of the shower for a scattering or decay process and calculate the variables used to generate the shower given the particles produced.

This is needed for the CKKW and POWHEG approaches Given the particles, with a history which we wish to interpret as a shower reconstruct the variables used to generate the shower for a decay process

Implemented in Herwig::QTildeReconstructor.

◆ Init()

static void Herwig::KinematicsReconstructor::Init ( )
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.

◆ operator=()

KinematicsReconstructor& Herwig::KinematicsReconstructor::operator= ( const KinematicsReconstructor )
private

The assignment operator is private and must never be called.

In fact, it should not even be implemented.

◆ reconstructHardJets()

virtual bool Herwig::KinematicsReconstructor::reconstructHardJets ( ShowerTreePtr  hard,
const map< tShowerProgenitorPtr, pair< Energy, double > > &  pt,
ShowerInteraction  type,
bool  switchRecon 
) const
pure virtual

Methods to reconstruct the kinematics of a scattering or decay process.

Given the ShowerTree for the shower from a hard process the method does the reconstruction of the jets, including the appropriate boosts (kinematics reshufflings) needed to conserve the total energy-momentum of the collision and preserving the invariant mass and the rapidity of the hard subprocess system.

Implemented in Herwig::QTildeReconstructor.


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