CepGenEvent Class Reference

Interfacing between CepGen and Pythia8 event definitions. More...

#include <CepGenAddOns/Pythia8Wrapper/PythiaEventInterface.h>

Inheritance diagram for CepGenEvent:

Collaboration diagram for CepGenEvent:

Public Types
enum struct	Type { centralAndPartons , centralAndBeamRemnants , centralAndFullBeamRemnants }
	List of particles to be included to the event content. More...

Public Member Functions
	CepGenEvent ()
void	initialise (const cepgen::RunParameters &)
	Initialise this conversion object with CepGen parameters.
void	feedEvent (const cepgen::Event &ev, const Type &type)
	Feed a new CepGen event to this conversion object.
void	setCrossSection (int id, double cross_section, double cross_section_err)
	Set the cross section for a given process.
void	setProcess (int id, double cross_section, double q2_scale, double alpha_qed, double alpha_qcd)
	Specify new process attributes.
void	addComments (const std::string &comments)
	Feed comments to the LHEF block.
unsigned short	cepgenId (unsigned short py_id) const
	Retrieve the CepGen particle index given its Pythia8 event id.
unsigned short	pythiaId (unsigned short cg_id) const
	Retrieve the Pythia8 particle index given its CepGen event id.
void	addCepGenParticle (const cepgen::Particle &part, int status=INVALID_ID, const std::pair< int, int > &mothers={0, 0}, const std::pair< int, int > &colours={0, 0})
	Add a CepGen particle to the event content.
void	addCorresp (unsigned short py_id, unsigned short cg_id)
	Register a new Pythia8 / CepGen particle mapping.
void	dumpCorresp () const
	Print all Pythia8 / CepGen Particles correspondences.
bool	setInit () override
bool	setEvent (int, double) override

Static Public Attributes
static constexpr unsigned short	INVALID_ID = 999
	Invalid id association.
static constexpr unsigned short	MIN_COLOUR_INDEX = 501
	Minimal colour indexing number.

Detailed Description

Definition at line 34 of file PythiaEventInterface.h.

Member Enumeration Documentation

Type

enum struct Type

strong

Enumerator
centralAndPartons	only include initiators and central system
centralAndBeamRemnants	include undissociated beam remnants and central system
centralAndFullBeamRemnants	include dissociated beam remnants and central system

Definition at line 37 of file PythiaEventInterface.h.

Constructor & Destructor Documentation

CepGenEvent()

CepGenEvent ( )

explicit

Definition at line 30 of file PythiaEventInterface.cpp.

Member Function Documentation

addCepGenParticle()

void addCepGenParticle	(	const cepgen::Particle &	part,
		int	status = INVALID_ID,
		const std::pair< int, int > &	mothers = {0, 0},
		const std::pair< int, int > &	colours = {0, 0}
	)

Definition at line 229 of file PythiaEventInterface.cpp.

addComments()

void addComments

(

const std::string &

comments

)

Definition at line 44 of file PythiaEventInterface.cpp.

addCorresp()

void addCorresp	(	unsigned short	py_id,
		unsigned short	cg_id
	)

Parameters

[in]	py_id	Pythia8 particle id
[in]	cg_id	CepGen particle id

Definition at line 265 of file PythiaEventInterface.cpp.

cepgenId()

unsigned short cepgenId

(

unsigned short

py_id

)

const

Parameters

[in]

py_id

Pythia8 particle id

Returns

CepGen particle id

Definition at line 215 of file PythiaEventInterface.cpp.

dumpCorresp()

void dumpCorresp

(

)

const

Definition at line 267 of file PythiaEventInterface.cpp.

feedEvent()

void feedEvent	(	const cepgen::Event &	ev,
		const Type &	type
	)

Parameters

[in]	ev	CepGen event to be fed
[in]	type	Type of storage

Definition at line 59 of file PythiaEventInterface.cpp.

initialise()

void initialise

(

const cepgen::RunParameters &

params

)

Definition at line 32 of file PythiaEventInterface.cpp.

pythiaId()

unsigned short pythiaId

(

unsigned short

cg_id

)

const

Parameters

[in]

cg_id

CepGen particle id

Returns

Pythia8 particle id

Definition at line 221 of file PythiaEventInterface.cpp.

setCrossSection()

void setCrossSection	(	int	id,
		double	cross_section,
		double	cross_section_err
	)

Parameters

[in]	id	Process identifier
[in]	cross_section	Process cross section, in pb
[in]	cross_section_err	Uncertainty on process cross section, in pb

Definition at line 52 of file PythiaEventInterface.cpp.

setEvent()

bool setEvent ( int  , double    )

override

Definition at line 92 of file PythiaEventInterface.h.

setInit()

bool setInit ( )

override

Definition at line 88 of file PythiaEventInterface.h.

setProcess()

void setProcess	(	int	id,
		double	cross_section,
		double	q2_scale,
		double	alpha_qed,
		double	alpha_qcd
	)

Parameters

[in]	id	Process identifier
[in]	cross_section	Process cross section, in pb
[in]	q2_scale	Hard event scale \(Q^2\), in GeV \(^2\)
[in]	alpha_qed	\(\alpha_{\rm em}\) for this process
[in]	alpha_qcd	\(\alpha_{\rm s}\) for this process

Definition at line 210 of file PythiaEventInterface.cpp.

Member Data Documentation

INVALID_ID

constexpr unsigned short INVALID_ID = 999

staticconstexpr

Definition at line 85 of file PythiaEventInterface.h.

MIN_COLOUR_INDEX

constexpr unsigned short MIN_COLOUR_INDEX = 501

staticconstexpr

Definition at line 86 of file PythiaEventInterface.h.