ThePEG::SubProcess Class Reference

A SubProcess object represents a hard $2\rightarrow n$ sub-process in a collision. More...

#include <SubProcess.h>

Inheritance diagram for ThePEG::SubProcess:

List of all members.

Public Member Functions

SubProcess (const PPair &newIncoming, tCollPtr newCollision=tCollPtr(), tcEventBasePtr newHandler=tcEventBasePtr())

Standard constructor.

virtual ~SubProcess ()

Destructor.

tcEventBasePtr handler () const

A pointer to the MEBase object which generated this SubProcess.

tCollPtr collision () const

A pointer to the collision to which this sub-process belongs.

const PPair & incoming () const

The pair of incoming partons.

const ParticleVector & intermediates () const

A reference to the vector of intermediate partons.

const ParticleVector & outgoing () const

A reference to the vector of outgoing particles.

template<class InputIterator>

void setOutgoing (InputIterator, InputIterator)

Set the vector of outgoing particles.

void addOutgoing (tPPtr p, bool fixrelations=true)

Add a particle to the list of outgoing ones.

void changeIncoming (tPPtr pnew, tPPtr pold)

Change the incoming parton.

template<class InputIterator>

void setIntermediates (InputIterator, InputIterator)

Set the vector of intermediate particles.

void addIntermediate (tPPtr p, bool fixrelations=true)

Add a particle to the list of intermediate ones.

void removeEntry (tPPtr p)

Remove a particle entry from this sub-process.

SubProPtr clone () const

Return a clone of this sub process.

bool decayed () const

True if a perturbative cascade has been applied to this sub process.

void decayed (bool x)

Set to true if a perturbative cascade has been applied to this sub process.

void transform (const LorentzRotation &)

Perform a LorentzTransformation of all particles in the sub process.

Energy2 shat () const

Return the value of the Mandelstam variable $\hat{s}$ in this SubProcess.

Energy2 that () const

Return the value of the Mandelstam variable $\hat{t}$ in this SubProcess.

Energy2 uhat () const

Return the value of the Mandelstam variable $\hat{u}$ in this SubProcess.

void persistentOutput (PersistentOStream &) const

Standard function for writing to a persistent stream.

void persistentInput (PersistentIStream &, int)

Standard function for reading from a persistent stream.

virtual void debugme () const

Print out debugging information for this object on std::cerr.

Static Public Member Functions

static void Init ()

Standard Init function.

Protected Member Functions

void rebind (const EventTranslationMap &trans)

Rebind to cloned objects.

Private Member Functions

SubProcess ()

Private default constructor must only be used by the PersistentIStream class via the ClassTraits<SubProcess> class .

SubProcess & operator= (const SubProcess &)

Assignment is forbidden.

Private Attributes

tcEventBasePtr theHandler

A pointer to the MEBase object which generated this sub-process.

tCollPtr theCollision

A pointer to the collision to which this sub-process belongs.

PPair theIncoming

The pair of incoming particles.

ParticleVector theIntermediates

The vector of intermediate particles,.

ParticleVector theOutgoing

The vector of outgoing particles.

bool isDecayed

True if a perturbative cascade has been applied to this sub process.

Static Private Attributes

static ClassDescription
< SubProcess > initSubProcess

Describe concrete class with persistent data.

Friends

class Step

Most of the Event classes are friends with each other.

class Collision

Most of the Event classes are friends with each other.

class ClassTraits< SubProcess >

The ClassTraits<SubProcess> class must be a friend to be able to use the private default constructor.

Detailed Description

A SubProcess object represents a hard $2\rightarrow n$ sub-process in a collision.

It carries information about the incoming and outgoing particles, as well as possible intermediate ones. It also has a pointer to the MEBase object which generated the sub-process.

See also:: Event
Particle

Definition at line 29 of file SubProcess.h.

Constructor & Destructor Documentation

ThePEG::SubProcess::SubProcess	(	const PPair &	newIncoming,
		tCollPtr	newCollision = `tCollPtr()`,
		tcEventBasePtr	newHandler = `tcEventBasePtr()`
	)

Standard constructor.

Parameters:

	newIncoming	the two incoming partons.
	newCollision	the Collision to which this SubProcess belongs.
	newHandler	the MEBase object which generated this SubProcess.

Member Function Documentation

void ThePEG::SubProcess::addOutgoing	(	tPPtr	p,
		bool	fixrelations = `true`
	)

Add a particle to the list of outgoing ones.

If fixrelations is true the mother daughter pointers will be set to/from the incoming partons.

void ThePEG::SubProcess::addIntermediate	(	tPPtr	p,
		bool	fixrelations = `true`
	)

Add a particle to the list of intermediate ones.

If fixrelations is true the mother daughter pointers will be set to/from the incoming partons.

void ThePEG::SubProcess::rebind ( const EventTranslationMap & trans ) [protected]

Rebind to cloned objects.

When a SubProcess is cloned, a shallow copy is done first, then all Particles etc, are cloned, and finally this method is used to see to that the pointers in the cloned SubProcess points to the cloned Particles etc.

Energy2 ThePEG::SubProcess::shat ( ) const [inline]

Return the value of the Mandelstam variable $\hat{s}$ in this SubProcess.

It is calculated using the incoming particles.

Definition at line 158 of file SubProcess.h.

References incoming().

Energy2 ThePEG::SubProcess::that ( ) const [inline]

Return the value of the Mandelstam variable $\hat{t}$ in this SubProcess.

It is calculated using the first incoming and first outgoing particle.

Definition at line 167 of file SubProcess.h.

References incoming(), and outgoing().

Energy2 ThePEG::SubProcess::uhat ( ) const [inline]

Return the value of the Mandelstam variable $\hat{u}$ in this SubProcess.

It is calculated using the first incoming and last outgoing particle.

Definition at line 176 of file SubProcess.h.

References incoming(), and outgoing().

static void ThePEG::SubProcess::Init ( ) [static]

Standard Init function.

See also:: Base::Init().

Reimplemented from ThePEG::Base.

virtual void ThePEG::SubProcess::debugme ( ) const [virtual]

Print out debugging information for this object on std::cerr.

To be called from within a debugger via the debug() function.

Reimplemented from ThePEG::Base.

Friends And Related Function Documentation

friend class Step [friend]

Most of the Event classes are friends with each other.

Definition at line 34 of file SubProcess.h.

friend class Collision [friend]

Most of the Event classes are friends with each other.

Definition at line 36 of file SubProcess.h.

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

SubProcess.h


Public Member Functions
	SubProcess (const PPair &newIncoming, tCollPtr newCollision=tCollPtr(), tcEventBasePtr newHandler=tcEventBasePtr())
	Standard constructor.
virtual	~SubProcess ()
	Destructor.
tcEventBasePtr	handler () const
	A pointer to the MEBase object which generated this SubProcess.
tCollPtr	collision () const
	A pointer to the collision to which this sub-process belongs.
const PPair &	incoming () const
	The pair of incoming partons.
const ParticleVector &	intermediates () const
	A reference to the vector of intermediate partons.
const ParticleVector &	outgoing () const
	A reference to the vector of outgoing particles.
template<class InputIterator>
void	setOutgoing (InputIterator, InputIterator)
	Set the vector of outgoing particles.
void	addOutgoing (tPPtr p, bool fixrelations=true)
	Add a particle to the list of outgoing ones.
void	changeIncoming (tPPtr pnew, tPPtr pold)
	Change the incoming parton.
template<class InputIterator>
void	setIntermediates (InputIterator, InputIterator)
	Set the vector of intermediate particles.
void	addIntermediate (tPPtr p, bool fixrelations=true)
	Add a particle to the list of intermediate ones.
void	removeEntry (tPPtr p)
	Remove a particle entry from this sub-process.
SubProPtr	clone () const
	Return a clone of this sub process.
bool	decayed () const
	True if a perturbative cascade has been applied to this sub process.
void	decayed (bool x)
	Set to true if a perturbative cascade has been applied to this sub process.
void	transform (const LorentzRotation &)
	Perform a LorentzTransformation of all particles in the sub process.
Energy2	shat () const
	Return the value of the Mandelstam variable $\hat{s}$ in this SubProcess.
Energy2	that () const
	Return the value of the Mandelstam variable $\hat{t}$ in this SubProcess.
Energy2	uhat () const
	Return the value of the Mandelstam variable $\hat{u}$ in this SubProcess.
void	persistentOutput (PersistentOStream &) const
	Standard function for writing to a persistent stream.
void	persistentInput (PersistentIStream &, int)
	Standard function for reading from a persistent stream.
virtual void	debugme () const
	Print out debugging information for this object on std::cerr.
Static Public Member Functions
static void	Init ()
	Standard Init function.
Protected Member Functions
void	rebind (const EventTranslationMap &trans)
	Rebind to cloned objects.
Private Member Functions
	SubProcess ()
	Private default constructor must only be used by the PersistentIStream class via the ClassTraits<SubProcess> class .
SubProcess &	operator= (const SubProcess &)
	Assignment is forbidden.
Private Attributes
tcEventBasePtr	theHandler
	A pointer to the MEBase object which generated this sub-process.
tCollPtr	theCollision
	A pointer to the collision to which this sub-process belongs.
PPair	theIncoming
	The pair of incoming particles.
ParticleVector	theIntermediates
	The vector of intermediate particles,.
ParticleVector	theOutgoing
	The vector of outgoing particles.
bool	isDecayed
	True if a perturbative cascade has been applied to this sub process.
Static Private Attributes
static ClassDescription < SubProcess >	initSubProcess
	Describe concrete class with persistent data.
Friends
class	Step
	Most of the Event classes are friends with each other.
class	Collision
	Most of the Event classes are friends with each other.
class	ClassTraits< SubProcess >
	The ClassTraits<SubProcess> class must be a friend to be able to use the private default constructor.