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:

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.

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

MadGraphTwoCut & operator= (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

enum ThePEG::MadGraphTwoCut::CutType

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.

enum ThePEG::MadGraphTwoCut::PType

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.

enum ThePEG::MadGraphTwoCut::PPType

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.

Constructor & Destructor Documentation

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

The constructor used by the MadGraphReader.

Parameters:

	t	is the type of the cut.
	p	is the type of particles the cut is applied to.
	c	is the value of the cut (in units of GeV where applicable).

Definition at line 88 of file MadGraphTwoCut.h.

Member Function Documentation

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.

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 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::persistentOutput ( PersistentOStream & os ) const

Function used to write out object persistently.

Parameters:

os

the persistent output stream written to.

Reimplemented from ThePEG::Interfaced.

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

Function used to read in object persistently.

Parameters:

	is	the persistent input stream read from.
	version	the version number of the object when written.

Reimplemented from ThePEG::Interfaced.

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 IBPtr ThePEG::MadGraphTwoCut::clone ( ) const [protected, virtual]

Make a simple clone of this object.

Returns:: a pointer to the new object.

Implements ThePEG::InterfacedBase.

virtual IBPtr ThePEG::MadGraphTwoCut::fullclone ( ) const [protected, virtual]

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.

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.

Member Data Documentation

ClassDescription<MadGraphTwoCut> ThePEG::MadGraphTwoCut::initMadGraphTwoCut [static, private]

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:

MadGraphTwoCut.h


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.
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
MadGraphTwoCut &	operator= (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.