All useful information about a generated event. More...

#include <CepGenAddOns/ROOTWrapper/ROOTTreeInfo.h>

Collaboration diagram for CepGenEvent:

Public Member Functions
	CepGenEvent ()

void	clear ()
	Reinitialise the event content.

TTree *	tree ()
	Retrieve the ROOT tree.

void	create ()
	Populate the tree and all associated branches.

void	attach ()
	Attach the event tree reader to a tree.

void	attach (TFile *f, const std::string &events_tree=TREE_NAME)
	Attach the event tree reader to a file Attach the event tree reader to a file.

void	attach (const std::string &filename, const std::string &events_tree=TREE_NAME)

void	fill (const cepgen::Event &, bool compress=false)
	Fill the tree with a new event.

bool	next (cepgen::Event &)
	Read the next event in the file.

Static Public Member Functions
static CepGenEvent	load (TFile *, const std::string &events_tree=TREE_NAME)

static CepGenEvent	load (const std::string &, const std::string &events_tree=TREE_NAME)

Public Attributes
cepgen::Event::EventMetadata	metadata

float	gen_time {-1.}
	Event generation time.

float	tot_time {-1.}
	Total event generation time.

float	weight {-1.}
	Event weight.

int	np {0}
	Number of particles in the event.

double	pt [MAX_PART]
	Particles transverse momentum.

double	eta [MAX_PART]
	Particles pseudo-rapidity.

double	phi [MAX_PART]
	Particles azimuthal angle.

double	rapidity [MAX_PART]
	Particles rapidity.

double	E [MAX_PART]
	Particles energy, in GeV.

double	m [MAX_PART]
	Particles mass, in GeV/c \({}^2\).

double	charge [MAX_PART]
	Particles charges, in e.

int	pdg_id [MAX_PART]
	Integer particles PDG id.

int	parent1 [MAX_PART]
	First particles mother.

int	parent2 [MAX_PART]
	Last particles mother.

int	stable [MAX_PART]
	Whether the particle must decay or not.

int	role [MAX_PART]
	Particles role in the event.

int	status [MAX_PART]
	Integer status code.

Static Public Attributes
static constexpr size_t	MAX_PART = 5000
	Maximal number of particles in event.

static constexpr const char *	TREE_NAME = "events"
	Output tree name.

Detailed Description

Definition at line 60 of file ROOTTreeInfo.h.

Constructor & Destructor Documentation

◆ CepGenEvent()

CepGenEvent ( )

Definition at line 62 of file ROOTTreeInfo.h.

Member Function Documentation

◆ attach() [1/3]

void attach ( )

Definition at line 135 of file ROOTTreeInfo.cpp.

◆ attach() [2/3]

void attach	(	const std::string &	filename,
		const std::string &	events_tree = `TREE_NAME`
	)

Definition at line 198 of file ROOTTreeInfo.cpp.

◆ attach() [3/3]

void attach	(	TFile *	f,
		const std::string &	events_tree = `TREE_NAME`
	)

Definition at line 192 of file ROOTTreeInfo.cpp.

◆ clear()

void clear ( )

Definition at line 102 of file ROOTTreeInfo.cpp.

◆ create()

void create ( )

Definition at line 111 of file ROOTTreeInfo.cpp.

◆ fill()

void fill	(	const cepgen::Event &	ev,
		bool	compress = `false`
	)

Definition at line 159 of file ROOTTreeInfo.cpp.

◆ load() [1/2]

CepGenEvent load	(	const std::string &	filename,
		const std::string &	events_tree = `TREE_NAME`
	)

static

Definition at line 96 of file ROOTTreeInfo.cpp.

◆ load() [2/2]

CepGenEvent load	(	TFile *	file,
		const std::string &	events_tree = `TREE_NAME`
	)

static

Definition at line 90 of file ROOTTreeInfo.cpp.

◆ next()

bool next ( cepgen::Event & ev )

Definition at line 203 of file ROOTTreeInfo.cpp.

◆ tree()

TTree * tree ( )

Definition at line 91 of file ROOTTreeInfo.h.

Member Data Documentation

◆ charge

double charge[MAX_PART]

Definition at line 82 of file ROOTTreeInfo.h.

◆ E

double E[MAX_PART]

Definition at line 80 of file ROOTTreeInfo.h.

◆ eta

double eta[MAX_PART]

Definition at line 77 of file ROOTTreeInfo.h.

◆ gen_time

float gen_time {-1.}

Definition at line 72 of file ROOTTreeInfo.h.

◆ m

double m[MAX_PART]

Definition at line 81 of file ROOTTreeInfo.h.

◆ MAX_PART

constexpr size_t MAX_PART = 5000

staticconstexpr

Definition at line 65 of file ROOTTreeInfo.h.

◆ metadata

cepgen::Event::EventMetadata metadata

Definition at line 71 of file ROOTTreeInfo.h.

◆ np

int np {0}

Definition at line 75 of file ROOTTreeInfo.h.

◆ parent1

int parent1[MAX_PART]

Definition at line 84 of file ROOTTreeInfo.h.

◆ parent2

int parent2[MAX_PART]

Definition at line 85 of file ROOTTreeInfo.h.

◆ pdg_id

int pdg_id[MAX_PART]

Definition at line 83 of file ROOTTreeInfo.h.

◆ phi

double phi[MAX_PART]

Definition at line 78 of file ROOTTreeInfo.h.

◆ pt

double pt[MAX_PART]

Definition at line 76 of file ROOTTreeInfo.h.

◆ rapidity

double rapidity[MAX_PART]

Definition at line 79 of file ROOTTreeInfo.h.

◆ role

int role[MAX_PART]

Definition at line 87 of file ROOTTreeInfo.h.

◆ stable

int stable[MAX_PART]

Definition at line 86 of file ROOTTreeInfo.h.

◆ status

int status[MAX_PART]

Definition at line 88 of file ROOTTreeInfo.h.

◆ tot_time

float tot_time {-1.}

Definition at line 73 of file ROOTTreeInfo.h.

◆ TREE_NAME

constexpr const char* TREE_NAME = "events"