This class is responsible for generating additional semi hard partonic interactions. More...

#include <MPIHandler.h>

Inheritance diagram for Herwig::MPIHandler:

[legend]

Public Types
typedef vector< SubHdlPtr >	SubHandlerList
	A vector of `SubProcessHandler`s.

typedef vector< CutsPtr >	CutsList
	A vector of `Cut`s.

typedef vector< ProHdlPtr >	ProcessHandlerList
	A vector of `ProcessHandler`s.

typedef vector< CrossSection >	XSVector
	A vector of cross sections.

typedef pair< unsigned int, unsigned int >	MPair
	A pair of multiplicities: hard, soft.

Public Types inherited from ThePEG::InterfacedBase
enum	InitState

Public Types inherited from ThePEG::Pointer::ReferenceCounted
typedef unsigned int	CounterType

Public Member Functions
	MPIHandler ()
	The default constructor.

Methods for the MPI generation.
virtual bool	beamOK () const
	Return true or false depending on the generator setup.

virtual bool	softInt () const
	Return true or false depending on whether soft interactions are enabled.

virtual unsigned int	softMultiplicity () const
	Get the soft multiplicity from the pretabulated multiplicity distribution.

virtual unsigned int	multiplicity (unsigned int sel=0)
	Sample from the pretabulated multiplicity distribution.

virtual tStdXCombPtr	generate (unsigned int sel=0)
	Select a StandardXComb according to it's weight.

Public Member Functions inherited from Herwig::UEBase
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

Public Member Functions inherited from ThePEG::InterfacedBase
string	fullName () const

string	name () const

string	path () const

string	comment () const

void	setup (istream &is)

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

virtual IBPtr	fullclone () const

void	persistentOutput (PersistentOStream &os) const

void	persistentInput (PersistentIStream &is, int version)

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

virtual IBPtr	fullclone () const

Public Member Functions inherited from ThePEG::Base
void	debug () const

virtual void	debugme () const

Public Member Functions inherited from ThePEG::Pointer::ReferenceCounted
CounterType	referenceCount () const

Public Member Functions inherited from ThePEG::Named
	Named (const string &newName=string())

	Named (const Named &)=default

const string &	name () const

bool	operator== (const Named &other) const

bool	operator< (const Named &other) const

Static Private Attributes
static const unsigned int	maxScatters_ = 99
	Maximum number of scatters.

Friends
struct	Eikonalization
	Class for the integration is a friend to access private members.

struct	TotalXSecBisection

struct	slopeAndTotalXSec

struct	slopeInt

struct	slopeBisection

Clone Methods.
static MPIHandler *	currentHandler_
	The current handler.

tEHPtr	theHandler
	A pointer to the EventHandler that calls us.

SubHandlerList	theSubProcesses
	The list of `SubProcessHandler`s.

CutsList	theCuts
	The kinematical cuts used for this collision handler.

ProcessHandlerList	theProcessHandlers
	List of ProcessHandler used to sample different processes independently.

Selector< MPair >	theMultiplicities
	A ThePEG::Selector where the individual Probabilities P_N are stored and the actual Multiplicities can be selected.

unsigned int	softMult_
	Variable to store the soft multiplicity generated for a event.

vector< int >	additionalMultiplicities_
	Variable to store the multiplicity of the second hard process.

int	identicalToUE_
	Variable to store the information, which process is identical to the UE one (QCD dijets).

Energy	PtOfQCDProc_
	Variable to store the minimal pt of the process that is identical to the UE one.

Energy	Ptmin_
	Variable to store the parameter ptmin.

CrossSection	hardXSec_
	Variable to store the hard cross section above ptmin.

CrossSection	softXSec_
	Variable to store the final soft cross section below ptmin.

CrossSection	inelXSec_
	Variable to store the inelastic cross section.

CrossSection	totalXSecExp_
	Variable to store the total pp cross section (assuming rho=0!) as measured at LHC.

Energy2	softMu2_
	Variable to store the soft radius, that is calculated during initialization for the two-component model.

InvEnergy2	beta_
	slope to the non-perturbative pt spectrum: \(d\sigma/dp_T^2 = A \exp (- beta p_T^2)\).

int	algorithm_
	Switch to be set from outside to determine the algorithm used for UE activity.

Energy2	invRadius_
	Inverse hadron Radius squared \( (\mu^2) \).

unsigned int	numSubProcs_
	Member variable to store the actual number of separate SubProcesses.

double	colourDisrupt_
	Variable to store the relative number of colour disrupted connections to additional subprocesses.

bool	softInt_
	Flag to store whether soft interactions, i.e.

bool	twoComp_
	Flag to steer wheather the soft part has a different radius, that will be dynamically fixed.

unsigned int	DLmode_
	Switch to determine which Donnachie & Landshoff parametrization should be used.

double	avgNhard_
	Variable to store the average hard multiplicity.

double	avgNsoft_
	Variable to store the average soft multiplicity.

unsigned int	energyExtrapolation_
	Flag to store whether to calculate the minimal UE pt according to an extrapolation formula or whether to use MPIHandler:Cuts[0]:OneCuts[0]:MinKT.

Energy	EEparamA_
	Parameters for the energy extrapolation formula.

Energy	EEparamB_

Energy	refScale_

Energy	pT0_

double	b_

Energy	offset_

double	diffratio_ =0.2
	Parameters to set the fraction of diffractive cross section in the inelastic cross section.

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.

const SubHandlerList &	subProcesses () const
	Access the list of sub-process handlers.

SubHandlerList &	subProcesses ()
	Access the list of sub-process handlers.

const CutsList &	cuts () const
	Access the list of cuts.

CutsList &	cuts ()
	Access the list of cuts.

const ProcessHandlerList &	processHandlers () const
	Access the list of sub-process handlers.

ProcessHandlerList &	processHandlers ()
	Access the list of sub-process handlers.

void	Probs (XSVector UEXSecs)
	Method to calculate the individual probabilities for N scatters in the event.

void	MultDistribution (string filename) const
	Debug method to check the individual probabilities.

InvArea	OverlapFunction (Length b, Energy2 mu2=ZERO) const
	Return the value of the Overlap function A(b) for a given impact parameter b.

double	poisson (Length b, CrossSection sigma, unsigned int N, Energy2 mu2=ZERO) const
	Method to calculate the poisson probability for expectation value \(<n> = A(b)\sigma\), and multiplicity N.

CrossSection	totalXSecExp () const
	Returns the total cross section for the current CMenergy.

CrossSection	totalXSecDiff (CrossSection softXSec, Energy2 softMu2=ZERO) const
	Difference of the calculated total cross section and the experimental one from totalXSecExp.

InvEnergy2	slopeDiff (CrossSection softXSec, Energy2 softMu2=ZERO) const
	Difference of the calculated elastic slope and the experimental one from slopeExp.

InvEnergy2	slopeExp () const
	Returns the value of the elastic slope for the current CMenergy.

void	overrideUECuts ()
	Calculate the minimal transverse momentum from the extrapolation.

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

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.

virtual void	initialize ()
	Initialize this Multiple Interaction handler and all related objects needed to generate additional events.

virtual void	finalize ()
	Finalize this Multiple Interaction handler and all related objects needed to generate additional events.

virtual void	clean ()
	Clean up the XCombs from our subprocesses after each event.

void	statistics () const
	Write out accumulated statistics about integrated cross sections.

int	statLevel () const
	The level of statistics.

CrossSection	hardXSec () const
	Return the hard cross section above ptmin.

CrossSection	softXSec () const
	Return the soft cross section below ptmin.

CrossSection	inelasticXSec () const
	Return the inelastic cross section.

CrossSection	nonDiffractiveXSec () const
	Return the non-diffractive cross section assumed by the model.

CrossSection	diffractiveXSec () const
	Return the diffractive cross section assumed by the model.

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

Simple access functions.
tEHPtr	eventHandler () const
	Return the ThePEG::EventHandler assigned to this handler.

virtual int	Algorithm () const
	Return theAlgorithm.

virtual Energy	Ptmin () const
	Return the ptmin parameter of the model.

virtual InvEnergy2	beta () const
	Return the slope of the soft pt spectrum as calculated.

virtual Energy	PtForVeto () const
	Return the pt Cutoff of the Interaction that is identical to the UE one.

virtual unsigned int	additionalHardProcs () const
	Return the number of additional "hard" processes ( = multiple parton scattering)

virtual double	colourDisrupt () const
	Return the fraction of colour disrupted connections to the suprocesses.

static const MPIHandler *	currentHandler ()
	Return the current handler.

Additional Inherited Members
Static Public Member Functions inherited from Herwig::UEBase
static void	Init ()
	The standard Init function used to initialize the interfaces.

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 ()

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 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 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 &)

Protected Member Functions inherited from ThePEG::Pointer::ReferenceCounted
	ReferenceCounted (const ReferenceCounted &)

ReferenceCounted &	operator= (const ReferenceCounted &)

Protected Member Functions inherited from ThePEG::Named
const Named &	operator= (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 generating additional semi hard partonic interactions.

Author: Manuel B"ahr

See also: The interfaces defined for MPIHandler.; ProcessHandler; ShowerHandler; HwRemDecayer

Definition at line 45 of file MPIHandler.h.

Member Typedef Documentation

◆ CutsList

typedef vector<CutsPtr> Herwig::MPIHandler::CutsList

A vector of Cuts.

Definition at line 67 of file MPIHandler.h.

◆ MPair

typedef pair<unsigned int, unsigned int> Herwig::MPIHandler::MPair

A pair of multiplicities: hard, soft.

Definition at line 76 of file MPIHandler.h.

◆ ProcessHandlerList

typedef vector<ProHdlPtr> Herwig::MPIHandler::ProcessHandlerList

A vector of ProcessHandlers.

Definition at line 70 of file MPIHandler.h.

◆ SubHandlerList

typedef vector<SubHdlPtr> Herwig::MPIHandler::SubHandlerList

A vector of SubProcessHandlers.

Definition at line 64 of file MPIHandler.h.

◆ XSVector

typedef vector<CrossSection> Herwig::MPIHandler::XSVector

A vector of cross sections.

Definition at line 73 of file MPIHandler.h.

Constructor & Destructor Documentation

◆ MPIHandler()

Herwig::MPIHandler::MPIHandler ( )

inline

The default constructor.

Definition at line 81 of file MPIHandler.h.

Member Function Documentation

◆ additionalHardProcs()

virtual unsigned int Herwig::MPIHandler::additionalHardProcs ( ) const

inlinevirtual

Return the number of additional "hard" processes ( = multiple parton scattering)

Reimplemented from Herwig::UEBase.

Definition at line 276 of file MPIHandler.h.

References numSubProcs_.

◆ Algorithm()

virtual int Herwig::MPIHandler::Algorithm ( ) const

inlinevirtual

Return theAlgorithm.

Implements Herwig::UEBase.

Definition at line 242 of file MPIHandler.h.

References algorithm_.

◆ beamOK()

virtual bool Herwig::MPIHandler::beamOK ( ) const

virtual

Return true or false depending on the generator setup.

Implements Herwig::UEBase.

◆ beta()

virtual InvEnergy2 Herwig::MPIHandler::beta ( ) const

inlinevirtual

Return the slope of the soft pt spectrum as calculated.

Reimplemented from Herwig::UEBase.

Definition at line 258 of file MPIHandler.h.

References beta_, and ThePEG::Exception::runerror.

◆ clean()

virtual void Herwig::MPIHandler::clean ( )

virtual

Clean up the XCombs from our subprocesses after each event.

ThePEG cannot see them, so the usual cleaning misses these.

Reimplemented from Herwig::UEBase.

◆ clone()

virtual IBPtr Herwig::MPIHandler::clone ( ) const

protectedvirtual

Make a simple clone of this object.

Returns: a pointer to the new object.

Implements ThePEG::InterfacedBase.

◆ colourDisrupt()

virtual double Herwig::MPIHandler::colourDisrupt ( ) const

inlinevirtual

Return the fraction of colour disrupted connections to the suprocesses.

Reimplemented from Herwig::UEBase.

Definition at line 282 of file MPIHandler.h.

References colourDisrupt_.

◆ currentHandler()

static const MPIHandler * Herwig::MPIHandler::currentHandler ( )

inlinestatic

Return the current handler.

Definition at line 235 of file MPIHandler.h.

References currentHandler_.

◆ cuts() [1/2]

CutsList & Herwig::MPIHandler::cuts ( )

inlineprivate

Access the list of cuts.

Definition at line 322 of file MPIHandler.h.

References theCuts.

◆ cuts() [2/2]

const CutsList & Herwig::MPIHandler::cuts ( ) const

inlineprivate

Access the list of cuts.

Definition at line 317 of file MPIHandler.h.

References theCuts.

◆ diffractiveXSec()

CrossSection Herwig::MPIHandler::diffractiveXSec ( ) const

inlinevirtual

Return the diffractive cross section assumed by the model.

For now the diffractive cross section is seen as a fixed part of the inelastic cross section. TODO: Energy dependence and/or Include diffraction in Eikonalisation.

Implements Herwig::UEBase.

Definition at line 214 of file MPIHandler.h.

References diffratio_, and inelXSec_.

◆ eventHandler()

tEHPtr Herwig::MPIHandler::eventHandler ( ) const

inline

Return the ThePEG::EventHandler assigned to this handler.

This methods shadows ThePEG::StepHandler::eventHandler(), because it is not virtual in ThePEG::StepHandler. This is ok, because this method would give a null-pointer at some stages, whereas this method gives access to the explicitely copied pointer (in initialize()) to the ThePEG::EventHandler.

Definition at line 230 of file MPIHandler.h.

References theHandler.

Referenced by statLevel().

◆ finalize()

virtual void Herwig::MPIHandler::finalize ( )

virtual

Finalize this Multiple Interaction handler and all related objects needed to generate additional events.

Reimplemented from Herwig::UEBase.

◆ fullclone()

virtual IBPtr Herwig::MPIHandler::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.

◆ generate()

virtual tStdXCombPtr Herwig::MPIHandler::generate ( unsigned int sel = 0 )

virtual

Select a StandardXComb according to it's weight.

Returns: that StandardXComb Object

Parameters

sel	is the subprocess that should be returned, if more than one is specified.

Implements Herwig::UEBase.

◆ hardXSec()

CrossSection Herwig::MPIHandler::hardXSec ( ) const

inline

Return the hard cross section above ptmin.

Definition at line 188 of file MPIHandler.h.

References hardXSec_.

◆ inelasticXSec()

CrossSection Herwig::MPIHandler::inelasticXSec ( ) const

inlinevirtual

Return the inelastic cross section.

Implements Herwig::UEBase.

Definition at line 198 of file MPIHandler.h.

References inelXSec_.

◆ Init()

static void Herwig::MPIHandler::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.

◆ initialize()

virtual void Herwig::MPIHandler::initialize ( )

virtual

Initialize this Multiple Interaction handler and all related objects needed to generate additional events.

Reimplemented from Herwig::UEBase.

◆ MultDistribution()

void Herwig::MPIHandler::MultDistribution ( string filename ) const

private

Debug method to check the individual probabilities.

Parameters

filename is the file the output gets written to

◆ multiplicity()

virtual unsigned int Herwig::MPIHandler::multiplicity ( unsigned int sel = 0 )

virtual

Sample from the pretabulated multiplicity distribution.

Returns: the number of extra events in this collision

Implements Herwig::UEBase.

◆ nonDiffractiveXSec()

CrossSection Herwig::MPIHandler::nonDiffractiveXSec ( ) const

inlinevirtual

Return the non-diffractive cross section assumed by the model.

TODO: See comment at diffractiveXSec.

Implements Herwig::UEBase.

Definition at line 204 of file MPIHandler.h.

References diffratio_, and inelXSec_.

◆ operator=()

MPIHandler & Herwig::MPIHandler::operator= ( const MPIHandler & )

privatedelete

The assignment operator is private and must never be called.

In fact, it should not even be implemented.

◆ OverlapFunction()

InvArea Herwig::MPIHandler::OverlapFunction	(	Length	b,
		Energy2	mu2 = `ZERO`
	)		const

private

Return the value of the Overlap function A(b) for a given impact parameter b.

Parameters

b	impact parameter
mu2	= inv hadron radius squared. 0 will use the value of invRadius_

Returns: inverse area.

◆ persistentInput()

void Herwig::MPIHandler::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.

◆ persistentOutput()

void Herwig::MPIHandler::persistentOutput ( PersistentOStream & os ) const

Function used to write out object persistently.

Parameters

os	the persistent output stream written to.

◆ Probs()

void Herwig::MPIHandler::Probs ( XSVector UEXSecs )

private

Method to calculate the individual probabilities for N scatters in the event.

Parameters

UEXSecs is(are) the inclusiv cross section(s) for the UE process(es).

◆ processHandlers() [1/2]

ProcessHandlerList & Herwig::MPIHandler::processHandlers ( )

inlineprivate

Access the list of sub-process handlers.

Definition at line 333 of file MPIHandler.h.

References theProcessHandlers.

◆ processHandlers() [2/2]

const ProcessHandlerList & Herwig::MPIHandler::processHandlers ( ) const

inlineprivate

Access the list of sub-process handlers.

Definition at line 327 of file MPIHandler.h.

References theProcessHandlers.

◆ PtForVeto()

virtual Energy Herwig::MPIHandler::PtForVeto ( ) const

inlinevirtual

Return the pt Cutoff of the Interaction that is identical to the UE one.

Implements Herwig::UEBase.

Definition at line 270 of file MPIHandler.h.

References PtOfQCDProc_.

◆ Ptmin()

virtual Energy Herwig::MPIHandler::Ptmin ( ) const

inlinevirtual

Return the ptmin parameter of the model.

Implements Herwig::UEBase.

Definition at line 247 of file MPIHandler.h.

References Ptmin_, ThePEG::Exception::runerror, and ThePEG::ZERO.

◆ slopeDiff()

InvEnergy2 Herwig::MPIHandler::slopeDiff	(	CrossSection	softXSec,
		Energy2	softMu2 = `ZERO`
	)		const

private

Difference of the calculated elastic slope and the experimental one from slopeExp.

Parameters

softXSec	= the soft cross section that is used
softMu2	= the soft radius, if 0 the hard radius will be used

◆ slopeExp()

InvEnergy2 Herwig::MPIHandler::slopeExp ( ) const

private

Returns the value of the elastic slope for the current CMenergy.

The decision which parametrization will be used is steered by a external parameter of this class.

◆ softInt()

virtual bool Herwig::MPIHandler::softInt ( ) const

inlinevirtual

Return true or false depending on whether soft interactions are enabled.

Reimplemented from Herwig::UEBase.

Definition at line 106 of file MPIHandler.h.

References softInt_.

◆ softMultiplicity()

virtual unsigned int Herwig::MPIHandler::softMultiplicity ( ) const

inlinevirtual

Get the soft multiplicity from the pretabulated multiplicity distribution.

Generated in multiplicity in the first place.

Returns: the number of extra soft events in this collision

Reimplemented from Herwig::UEBase.

Definition at line 113 of file MPIHandler.h.

References softMult_.

◆ softXSec()

CrossSection Herwig::MPIHandler::softXSec ( ) const

inline

Return the soft cross section below ptmin.

Definition at line 193 of file MPIHandler.h.

References softXSec_.

◆ statLevel()

int Herwig::MPIHandler::statLevel ( ) const

inline

The level of statistics.

Controlls the amount of statistics written out after each run to the EventGenerators .out file. Simply the EventHandler method is called here.

Definition at line 183 of file MPIHandler.h.

References eventHandler().

◆ subProcesses() [1/2]

SubHandlerList & Herwig::MPIHandler::subProcesses ( )

inlineprivate

Access the list of sub-process handlers.

Definition at line 312 of file MPIHandler.h.

References theSubProcesses.

◆ subProcesses() [2/2]

const SubHandlerList & Herwig::MPIHandler::subProcesses ( ) const

inlineprivate

Access the list of sub-process handlers.

Definition at line 306 of file MPIHandler.h.

References theSubProcesses.

◆ totalXSecDiff()

CrossSection Herwig::MPIHandler::totalXSecDiff	(	CrossSection	softXSec,
		Energy2	softMu2 = `ZERO`
	)		const

private

Difference of the calculated total cross section and the experimental one from totalXSecExp.

Parameters

softXSec	= the soft cross section that is used
softMu2	= the soft radius, if 0 the hard radius will be used

◆ totalXSecExp()

CrossSection Herwig::MPIHandler::totalXSecExp ( ) const

private

Returns the total cross section for the current CMenergy.

The decision which parametrization will be used is steered by a external parameter of this class.

Friends And Related Function Documentation

◆ Eikonalization

friend struct Eikonalization

friend

Class for the integration is a friend to access private members.

Definition at line 55 of file MPIHandler.h.

◆ slopeAndTotalXSec

friend struct slopeAndTotalXSec

friend

Definition at line 57 of file MPIHandler.h.

◆ slopeBisection

friend struct slopeBisection

friend

Definition at line 59 of file MPIHandler.h.

◆ slopeInt

friend struct slopeInt

friend

Definition at line 58 of file MPIHandler.h.

◆ TotalXSecBisection

friend struct TotalXSecBisection

friend

Definition at line 56 of file MPIHandler.h.

Member Data Documentation

◆ additionalMultiplicities_

vector<int> Herwig::MPIHandler::additionalMultiplicities_

private

Variable to store the multiplicity of the second hard process.

Definition at line 451 of file MPIHandler.h.

◆ algorithm_

int Herwig::MPIHandler::algorithm_

private

Switch to be set from outside to determine the algorithm used for UE activity.

Definition at line 512 of file MPIHandler.h.

Referenced by Algorithm().

◆ avgNhard_

double Herwig::MPIHandler::avgNhard_

private

Variable to store the average hard multiplicity.

Definition at line 553 of file MPIHandler.h.

◆ avgNsoft_

double Herwig::MPIHandler::avgNsoft_

private

Variable to store the average soft multiplicity.

Definition at line 558 of file MPIHandler.h.

◆ b_

double Herwig::MPIHandler::b_

private

Definition at line 578 of file MPIHandler.h.

◆ beta_

InvEnergy2 Herwig::MPIHandler::beta_

private

slope to the non-perturbative pt spectrum: \(d\sigma/dp_T^2 = A \exp (- beta p_T^2)\).

Its value is determined durint initialization.

Definition at line 507 of file MPIHandler.h.

Referenced by beta().

◆ colourDisrupt_

double Herwig::MPIHandler::colourDisrupt_

private

Variable to store the relative number of colour disrupted connections to additional subprocesses.

This variable is used in Herwig::HwRemDecayer but store here, to have access to all parameters through one Object.

Definition at line 530 of file MPIHandler.h.

Referenced by colourDisrupt().

◆ currentHandler_

MPIHandler* Herwig::MPIHandler::currentHandler_

staticprivate

The current handler.

Definition at line 563 of file MPIHandler.h.

Referenced by currentHandler().

◆ diffratio_

double Herwig::MPIHandler::diffratio_ =0.2

private

Parameters to set the fraction of diffractive cross section in the inelastic cross section.

Definition at line 584 of file MPIHandler.h.

Referenced by diffractiveXSec(), and nonDiffractiveXSec().

◆ DLmode_

unsigned int Herwig::MPIHandler::DLmode_

private

Switch to determine which Donnachie & Landshoff parametrization should be used.

Definition at line 548 of file MPIHandler.h.

◆ EEparamA_

Energy Herwig::MPIHandler::EEparamA_

private

Parameters for the energy extrapolation formula.

Definition at line 574 of file MPIHandler.h.

◆ EEparamB_

Energy Herwig::MPIHandler::EEparamB_

private

Definition at line 575 of file MPIHandler.h.

◆ energyExtrapolation_

unsigned int Herwig::MPIHandler::energyExtrapolation_

private

Flag to store whether to calculate the minimal UE pt according to an extrapolation formula or whether to use MPIHandler:Cuts[0]:OneCuts[0]:MinKT.

Definition at line 569 of file MPIHandler.h.

◆ hardXSec_

CrossSection Herwig::MPIHandler::hardXSec_

private

Variable to store the hard cross section above ptmin.

Definition at line 477 of file MPIHandler.h.

Referenced by hardXSec().

◆ identicalToUE_

int Herwig::MPIHandler::identicalToUE_

private

Variable to store the information, which process is identical to the UE one (QCD dijets).

0 means "real" hard one n>0 means the nth additional hard scatter -1 means no one!

Definition at line 460 of file MPIHandler.h.

◆ inelXSec_

CrossSection Herwig::MPIHandler::inelXSec_

private

Variable to store the inelastic cross section.

Definition at line 487 of file MPIHandler.h.

Referenced by diffractiveXSec(), inelasticXSec(), and nonDiffractiveXSec().

◆ invRadius_

Energy2 Herwig::MPIHandler::invRadius_

private

Inverse hadron Radius squared \( (\mu^2) \).

Used inside the overlap function.

Definition at line 517 of file MPIHandler.h.

◆ maxScatters_

const unsigned int Herwig::MPIHandler::maxScatters_ = 99

staticprivate

Maximum number of scatters.

Definition at line 50 of file MPIHandler.h.

◆ numSubProcs_

unsigned int Herwig::MPIHandler::numSubProcs_

private

Member variable to store the actual number of separate SubProcesses.

Definition at line 522 of file MPIHandler.h.

Referenced by additionalHardProcs().

◆ offset_

Energy Herwig::MPIHandler::offset_

private

Definition at line 579 of file MPIHandler.h.

◆ pT0_

Energy Herwig::MPIHandler::pT0_

private

Definition at line 577 of file MPIHandler.h.

◆ Ptmin_

Energy Herwig::MPIHandler::Ptmin_

private

Variable to store the parameter ptmin.

Definition at line 472 of file MPIHandler.h.

Referenced by Ptmin().

◆ PtOfQCDProc_

Energy Herwig::MPIHandler::PtOfQCDProc_

private

Variable to store the minimal pt of the process that is identical to the UE one.

This only has to be set, if it can't be determined automatically (i.e. when reading QCD LesHouches files in).

Definition at line 467 of file MPIHandler.h.

Referenced by PtForVeto().

◆ refScale_

Energy Herwig::MPIHandler::refScale_

private

Definition at line 576 of file MPIHandler.h.

◆ softInt_

bool Herwig::MPIHandler::softInt_

private

Flag to store whether soft interactions, i.e.

pt < ptmin should be simulated.

Definition at line 536 of file MPIHandler.h.

Referenced by softInt().

◆ softMu2_

Energy2 Herwig::MPIHandler::softMu2_

private

Variable to store the soft radius, that is calculated during initialization for the two-component model.

Definition at line 501 of file MPIHandler.h.

◆ softMult_

unsigned int Herwig::MPIHandler::softMult_

private

Variable to store the soft multiplicity generated for a event.

This has to be stored as it is generated at the time of the hard additional interactions but used later on.

Definition at line 446 of file MPIHandler.h.

Referenced by softMultiplicity().

◆ softXSec_

CrossSection Herwig::MPIHandler::softXSec_

private

Variable to store the final soft cross section below ptmin.

Definition at line 482 of file MPIHandler.h.

Referenced by softXSec().

◆ theCuts

CutsList Herwig::MPIHandler::theCuts

private

The kinematical cuts used for this collision handler.

Definition at line 428 of file MPIHandler.h.

Referenced by cuts().

◆ theHandler

tEHPtr Herwig::MPIHandler::theHandler

private

A pointer to the EventHandler that calls us.

Has to be saved, because the method eventHandler() inherited from ThePEG::StepHandler returns a null-pointer sometimes. Leif changed that in r1053 so that a valid pointer is present, when calling doinitrun().

Definition at line 418 of file MPIHandler.h.

Referenced by eventHandler().

◆ theMultiplicities

Selector<MPair> Herwig::MPIHandler::theMultiplicities

private

A ThePEG::Selector where the individual Probabilities P_N are stored and the actual Multiplicities can be selected.

Definition at line 439 of file MPIHandler.h.

◆ theProcessHandlers

ProcessHandlerList Herwig::MPIHandler::theProcessHandlers

private

List of ProcessHandler used to sample different processes independently.

Definition at line 433 of file MPIHandler.h.

Referenced by processHandlers().

◆ theSubProcesses

SubHandlerList Herwig::MPIHandler::theSubProcesses

private

The list of SubProcessHandlers.

Definition at line 423 of file MPIHandler.h.

Referenced by subProcesses().

◆ totalXSecExp_

CrossSection Herwig::MPIHandler::totalXSecExp_

private

Variable to store the total pp cross section (assuming rho=0!) as measured at LHC.

If this variable is set, this value is used in the subsequent run instead of any of the Donnachie-Landshoff parametrizations.

Definition at line 495 of file MPIHandler.h.

◆ twoComp_

bool Herwig::MPIHandler::twoComp_

private

Flag to steer wheather the soft part has a different radius, that will be dynamically fixed.

Definition at line 542 of file MPIHandler.h.

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

MPIHandler.h

Public Types

Public Member Functions

Static Private Attributes

Friends

Clone Methods.

Functions used by the persistent I/O system.

Simple access functions.

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ CutsList

◆ MPair

◆ ProcessHandlerList

◆ SubHandlerList

◆ XSVector

Constructor & Destructor Documentation

◆ MPIHandler()

Member Function Documentation

◆ additionalHardProcs()

◆ Algorithm()

◆ beamOK()

◆ beta()

◆ clean()

◆ clone()

◆ colourDisrupt()

◆ currentHandler()

◆ cuts() [1/2]

◆ cuts() [2/2]

◆ diffractiveXSec()

◆ eventHandler()

◆ finalize()

◆ fullclone()

◆ generate()

◆ hardXSec()

◆ inelasticXSec()

◆ Init()

◆ initialize()

◆ MultDistribution()

◆ multiplicity()

◆ nonDiffractiveXSec()

◆ operator=()

◆ OverlapFunction()

◆ persistentInput()

◆ persistentOutput()

◆ Probs()

◆ processHandlers() [1/2]

◆ processHandlers() [2/2]

◆ PtForVeto()

◆ Ptmin()

◆ slopeDiff()

◆ slopeExp()

◆ softInt()

◆ softMultiplicity()

◆ softXSec()

◆ statLevel()

◆ subProcesses() [1/2]

◆ subProcesses() [2/2]

◆ totalXSecDiff()

◆ totalXSecExp()

Friends And Related Function Documentation

◆ Eikonalization

◆ slopeAndTotalXSec

◆ slopeBisection

◆ slopeInt

◆ TotalXSecBisection

Member Data Documentation

◆ additionalMultiplicities_

◆ algorithm_

◆ avgNhard_

◆ avgNsoft_

◆ b_

◆ beta_

◆ colourDisrupt_

◆ currentHandler_

◆ diffratio_

◆ DLmode_

◆ EEparamA_

◆ EEparamB_

◆ energyExtrapolation_

◆ hardXSec_