ThePEG  1.8.0
Public Types | Static Public Member Functions | Protected Member Functions | Private Member Functions | Private Attributes | Static Private Attributes
ThePEG::MadGraphTwoCut Class Reference

Objects of the MadGraphTwoCut class can be created automatically by the MadGraphReader class when scanning event files for information about cuts. More...

#include <MadGraphTwoCut.h>

Inheritance diagram for ThePEG::MadGraphTwoCut:
Inheritance graph
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List of all members.

Public Types

enum  CutType { INVMASS, DELTAR }
 Enumerate the different kinds of cuts made by MadGraph. More...
enum  PType {
  JET, LEP, PHO, BOT,
  NOT
}
 Enumerate the types of particles the cut is made on. More...
enum  PPType {
  JETJET, LEPLEP, PHOPHO, BOTBOT,
  BOTJET, PHOJET, JETLEP, PHOBOT,
  BOTLEP, PHOLEP
}
 Enumerate the types of particles pairs the cut is made on. More...

Public Member Functions

Standard constructors and destructors.
 MadGraphTwoCut ()
 The default constructor.
 MadGraphTwoCut (CutType t, PPType p, double c)
 The constructor used by the MadGraphReader.
Virtual functions mandated by the base class.
virtual Energy2 minSij (tcPDPtr pi, tcPDPtr pj) const
 Return the minimum allowed squared invariant mass of two outgoing partons of type pi and pj.
virtual Energy2 minTij (tcPDPtr pi, tcPDPtr po) const
 Return the minimum allowed value of the negative of the squared invariant mass of an incoming parton of type pi and an outgoing parton of type po.
virtual double minDeltaR (tcPDPtr pi, tcPDPtr pj) const
 Return the minimum allowed value of $\Delta R_{ij}=\sqrt{\Delta\eta_{ij}^2+\Delta\phi_{ij}^2}$ of two outgoing partons of type pi and pj.
virtual Energy minKTClus (tcPDPtr pi, tcPDPtr pj) const
 
Return the minimum allowed value of the longitudinally invariant

$k_\perp$-algorithms distance measure.

virtual double minDurham (tcPDPtr pi, tcPDPtr pj) const
 
Return the minimum allowed value of the Durham

$k_\perp$-algorithms distance measure.

virtual bool passCuts (tcCutsPtr parent, tcPDPtr pitype, tcPDPtr pjtype, LorentzMomentum pi, LorentzMomentum pj, bool inci=false, bool incj=false) const
 Return true if a pair of particles with type pitype and pjtype and momenta pi and pj respectively passes the cuts.
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.
- Public Member Functions inherited from ThePEG::TwoCutBase
virtual void describe () const
 Describe the currently active cuts in the log file.
 TwoCutBase ()
 The default constructor.
virtual ~TwoCutBase ()
 The destructor.
bool passCuts (tcCutsPtr parent, tcPPtr pi, tcPPtr pj, bool inci=false, bool incj=false) const
 Return true if the given pair of particles passes the cuts.
- 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.
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.
- 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.
string name () const
 Returns the name of this object, without the path.
string path () const
 Returns the path to this object including the trailing '/'.
string comment () const
 Returns a comment assigned to this object.
void setup (istream &is)
 Read setup info from a standard istream is.
virtual void debugme () const
 Print out debugging information for this object on std::cerr.
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).
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().
- 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.
- 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.
bool operator== (const Named &other) const
 Test for equality.
bool operator< (const Named &other) const
 Lexicographical comparison.

Static Public Member Functions

static void Init ()
 The standard Init function used to initialize the interfaces.

Protected Member Functions

bool checkType (tcPDPtr pi, tcPDPtr pj) const
 Returns true if cut should be applied to pair of particles of type pi and pj.
PType getType (tcPDPtr p) const
 Get the type of particle p.
Clone Methods.
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.

Private Member Functions

MadGraphTwoCutoperator= (const MadGraphTwoCut &)
 The assignment operator is private and must never be called.

Private Attributes

CutType cutType
 The type of this cut.
PPType pairType
 The type of particle pairs this cut applies to.
double theCut
 The value of the cut to be applied.

Static Private Attributes

static ClassDescription
< MadGraphTwoCut
initMadGraphTwoCut
 The static object used to initialize the description of this class.

Detailed Description

Objects of the MadGraphTwoCut class can be created automatically by the MadGraphReader class when scanning event files for information about cuts.

It is also possible to create objects by hand and use it as any other OneCutBase object.

See also:
The interfaces defined for MadGraphTwoCut.

Definition at line 28 of file MadGraphTwoCut.h.


Member Enumeration Documentation

Enumerate the different kinds of cuts made by MadGraph.

Enumerator:
INVMASS 

The minimum invariant mass of two particles.

DELTAR 

The minimum pseudo-rapidity–azimuth-angle distance between two particles.

Definition at line 35 of file MadGraphTwoCut.h.

Enumerate the types of particles pairs the cut is made on.

Enumerator:
JETJET 

The cut applies only to pairs of coloured particles (jets).

LEPLEP 

The cut applies only to lepton pairs (in case of INVMASS lepton–anti-lepton pairs of same flavour).

PHOPHO 

The cut applies only to pairs photons.

BOTBOT 

The cut applies only to pairs of bottom quarks.

BOTJET 

The cut applies only to bottom quarks paired with another coloured particle (jet).

PHOJET 

The cut applies only to a photon paired with a coloured particle (jet).

JETLEP 

The cut applies only to a coloured particle (jet) paired with a lepton.

PHOBOT 

The cut applies only to a photon paired with a bottom quark.

BOTLEP 

The cut applies only to bottom quarks paired with a lepton.

PHOLEP 

The cut applies only to a photon paired with a lepton.

Definition at line 55 of file MadGraphTwoCut.h.

Enumerate the types of particles the cut is made on.

Enumerator:
JET 

Coloured particles (jets).

LEP 

Leptons.

PHO 

Photons.

BOT 

Bottom quarks.

NOT 

Other types not cut on.

Definition at line 44 of file MadGraphTwoCut.h.


Constructor & Destructor Documentation

ThePEG::MadGraphTwoCut::MadGraphTwoCut ( CutType  t,
PPType  p,
double  c 
)
inline

The constructor used by the MadGraphReader.

Parameters:
tis the type of the cut.
pis the type of particles the cut is applied to.
cis the value of the cut (in units of GeV where applicable).

Definition at line 88 of file MadGraphTwoCut.h.


Member Function Documentation

virtual IBPtr ThePEG::MadGraphTwoCut::clone ( ) const
protectedvirtual

Make a simple clone of this object.

Returns:
a pointer to the new object.

Implements ThePEG::InterfacedBase.

virtual IBPtr ThePEG::MadGraphTwoCut::fullclone ( ) const
protectedvirtual

Make a clone of this object, possibly modifying the cloned object to make it sane.

Returns:
a pointer to the new object.

Reimplemented from ThePEG::InterfacedBase.

static void ThePEG::MadGraphTwoCut::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.

Reimplemented from ThePEG::TwoCutBase.

virtual double ThePEG::MadGraphTwoCut::minDurham ( tcPDPtr  pi,
tcPDPtr  pj 
) const
virtual

Return the minimum allowed value of the Durham

$k_\perp$-algorithms distance measure.

This is defined as $2\min(E_j^2, E_j^2)(1-\cos\theta_{ij})/\hat{s}$ for two outgoing partons.

Implements ThePEG::TwoCutBase.

virtual Energy ThePEG::MadGraphTwoCut::minKTClus ( tcPDPtr  pi,
tcPDPtr  pj 
) const
virtual

Return the minimum allowed value of the longitudinally invariant

$k_\perp$-algorithms distance measure.

This is defined as $\min(p_{\perp i}, p_{\perp j})\sqrt{\Delta\eta_{ij}^2+\Delta\phi_{ij}^2}$ for two outgoing partons, or simply $p_{\perp i}$ or $p_{\perp j}$ for a single outgoing parton. Returns 0 if both partons are incoming. A null pointer indicates an incoming parton, hence the type of the incoming parton is irrelevant.

Implements ThePEG::TwoCutBase.

MadGraphTwoCut& ThePEG::MadGraphTwoCut::operator= ( const MadGraphTwoCut )
private

The assignment operator is private and must never be called.

In fact, it should not even be implemented.

virtual bool ThePEG::MadGraphTwoCut::passCuts ( tcCutsPtr  parent,
tcPDPtr  pitype,
tcPDPtr  pjtype,
LorentzMomentum  pi,
LorentzMomentum  pj,
bool  inci = false,
bool  incj = false 
) const
virtual

Return true if a pair of particles with type pitype and pjtype and momenta pi and pj respectively passes the cuts.

inci and inj indicates if the corresponding particles are incoming.

Reimplemented from ThePEG::TwoCutBase.

void ThePEG::MadGraphTwoCut::persistentInput ( PersistentIStream is,
int  version 
)

Function used to read in object persistently.

Parameters:
isthe persistent input stream read from.
versionthe version number of the object when written.

Reimplemented from ThePEG::Interfaced.

void ThePEG::MadGraphTwoCut::persistentOutput ( PersistentOStream os) const

Function used to write out object persistently.

Parameters:
osthe persistent output stream written to.

Reimplemented from ThePEG::Interfaced.


Member Data Documentation

ClassDescription<MadGraphTwoCut> ThePEG::MadGraphTwoCut::initMadGraphTwoCut
staticprivate

The static object used to initialize the description of this class.

Indicates that this is a concrete class with persistent data.

Definition at line 227 of file MadGraphTwoCut.h.


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