Particle database manager class.

This manager creates a list of particles which by default is initialised from with the constants used by PYTHIA6 (plus some other particles added). See definition and the format of the default particle list in $ROOTSYS/etc/pdg_table.txt

There are 2 ways of redefining the name of the file containing the particle properties

One can define the name in .rootrc file:

Root.DatabasePDG: /home/sftnight/my_pdg_table.txt

One can use TDatabasePDG::ReadPDGTable method explicitly:
- TDatabasePDG *pdg = new TDatabasePDG();
- pdg->ReadPDGtable(filename)

See TParticlePDG for the description of a static particle properties. See TParticle for the description of a dynamic particle particle.

The current default pdg_table file displays lifetime 0 for some unstable particles.

Definition at line 21 of file TDatabasePDG.h.

Public Member Functions
	TDatabasePDG ()
	Create PDG database.

	~TDatabasePDG () override
	Cleanup the PDG database.

virtual TParticlePDG *	AddAntiParticle (const char *Name, Int_t PdgCode)
	assuming particle has already been defined

virtual TParticlePDG *	AddParticle (const char Name, const char Title, Double_t Mass, Bool_t Stable, Double_t DecayWidth, Double_t Charge, const char *ParticleClass, Int_t PdgCode, Int_t Anti=-1, Int_t TrackingCode=0)
	Particle definition normal constructor.

void	Browse (TBrowser *b) override
	browse data base

virtual Int_t	ConvertGeant3ToPdg (Int_t Geant3Number) const
	Converts Geant3 particle codes to PDG convention.

virtual Int_t	ConvertIsajetToPdg (Int_t isaNumber) const
	Converts the ISAJET Particle number into the PDG MC number.

virtual Int_t	ConvertPdgToGeant3 (Int_t pdgNumber) const
	Converts pdg code to geant3 id.

TParticlePDG *	GetParticle (const char *name) const
	Get a pointer to the particle object according to the name given.

TParticlePDG *	GetParticle (Int_t pdgCode) const
	Get a pointer to the particle object according to the MC code number.

TParticleClassPDG *	GetParticleClass (const char *name)

TClass *	IsA () const override

Bool_t	IsFolder () const override
	Returns kTRUE in case object contains browsable objects (like containers or lists of other objects).

const THashList *	ParticleList () const

void	Print (Option_t *opt="") const override
	Print contents of PDG database.

virtual void	ReadPDGTable (const char *filename="")
	read list of particles from a file if the particle list does not exist, it is created, otherwise particles are added to the existing list See $ROOTSYS/etc/pdg_table.txt to see the file format

void	Streamer (TBuffer &) override
	Stream an object of class TObject.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

virtual Int_t	WritePDGTable (const char *filename)
	write contents of the particle DB into a file

Public Member Functions inherited from TNamed
	TNamed ()

	TNamed (const char name, const char title)

	TNamed (const TNamed &named)
	TNamed copy ctor.

	TNamed (const TString &name, const TString &title)

virtual	~TNamed ()
	TNamed destructor.

void	Clear (Option_t *option="") override
	Set name and title to empty strings ("").

TObject *	Clone (const char *newname="") const override
	Make a clone of an object using the Streamer facility.

Int_t	Compare (const TObject *obj) const override
	Compare two TNamed objects.

void	Copy (TObject &named) const override
	Copy this to obj.

virtual void	FillBuffer (char *&buffer)
	Encode TNamed into output buffer.

const char *	GetName () const override
	Returns name of object.

const char *	GetTitle () const override
	Returns title of object.

ULong_t	Hash () const override
	Return hash value for this object.

TClass *	IsA () const override

Bool_t	IsSortable () const override

void	ls (Option_t *option="") const override
	List TNamed name and title.

TNamed &	operator= (const TNamed &rhs)
	TNamed assignment operator.

void	Print (Option_t *option="") const override
	Print TNamed name and title.

virtual void	SetName (const char *name)
	Set the name of the TNamed.

virtual void	SetNameTitle (const char name, const char title)
	Set all the TNamed parameters (name and title).

virtual void	SetTitle (const char *title="")
	Set the title of the TNamed.

virtual Int_t	Sizeof () const
	Return size of the TNamed part of the TObject.

void	Streamer (TBuffer &) override
	Stream an object of class TObject.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

Public Member Functions inherited from TObject
	TObject ()
	TObject constructor.

	TObject (const TObject &object)
	TObject copy ctor.

virtual	~TObject ()
	TObject destructor.

void	AbstractMethod (const char *method) const
	Use this method to implement an "abstract" method that you don't want to leave purely abstract.

virtual void	AppendPad (Option_t *option="")
	Append graphics object to current pad.

ULong_t	CheckedHash ()
	Check and record whether this class has a consistent Hash/RecursiveRemove setup (*) and then return the regular Hash value for this object.

virtual const char *	ClassName () const
	Returns name of class to which the object belongs.

virtual void	Delete (Option_t *option="")
	Delete this object.

virtual Int_t	DistancetoPrimitive (Int_t px, Int_t py)
	Computes distance from point (px,py) to the object.

virtual void	Draw (Option_t *option="")
	Default Draw method for all objects.

virtual void	DrawClass () const
	Draw class inheritance tree of the class to which this object belongs.

virtual TObject *	DrawClone (Option_t *option="") const
	Draw a clone of this object in the current selected pad with: `gROOT->SetSelectedPad(c1)`.

virtual void	Dump () const
	Dump contents of object on stdout.

virtual void	Error (const char method, const char msgfmt,...) const
	Issue error message.

virtual void	Execute (const char method, const char params, Int_t *error=nullptr)
	Execute method on this object with the given parameter string, e.g.

virtual void	Execute (TMethod method, TObjArray params, Int_t *error=nullptr)
	Execute method on this object with parameters stored in the TObjArray.

virtual void	ExecuteEvent (Int_t event, Int_t px, Int_t py)
	Execute action corresponding to an event at (px,py).

virtual void	Fatal (const char method, const char msgfmt,...) const
	Issue fatal error message.

virtual TObject *	FindObject (const char *name) const
	Must be redefined in derived classes.

virtual TObject *	FindObject (const TObject *obj) const
	Must be redefined in derived classes.

virtual Option_t *	GetDrawOption () const
	Get option used by the graphics system to draw this object.

virtual const char *	GetIconName () const
	Returns mime type name of object.

virtual char *	GetObjectInfo (Int_t px, Int_t py) const
	Returns string containing info about the object at position (px,py).

virtual Option_t *	GetOption () const

virtual UInt_t	GetUniqueID () const
	Return the unique object id.

virtual Bool_t	HandleTimer (TTimer *timer)
	Execute action in response of a timer timing out.

Bool_t	HasInconsistentHash () const
	Return true is the type of this object is known to have an inconsistent setup for Hash and RecursiveRemove (i.e.

virtual void	Info (const char method, const char msgfmt,...) const
	Issue info message.

virtual Bool_t	InheritsFrom (const char *classname) const
	Returns kTRUE if object inherits from class "classname".

virtual Bool_t	InheritsFrom (const TClass *cl) const
	Returns kTRUE if object inherits from TClass cl.

virtual void	Inspect () const
	Dump contents of this object in a graphics canvas.

void	InvertBit (UInt_t f)

Bool_t	IsDestructed () const
	IsDestructed.

virtual Bool_t	IsEqual (const TObject *obj) const
	Default equal comparison (objects are equal if they have the same address in memory).

R__ALWAYS_INLINE Bool_t	IsOnHeap () const

R__ALWAYS_INLINE Bool_t	IsZombie () const

void	MayNotUse (const char *method) const
	Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary).

virtual Bool_t	Notify ()
	This method must be overridden to handle object notification (the base implementation is no-op).

void	Obsolete (const char method, const char asOfVers, const char *removedFromVers) const
	Use this method to declare a method obsolete.

void	operator delete (void *ptr)
	Operator delete.

void	operator delete (void ptr, void vp)
	Only called by placement new when throwing an exception.

void	operator delete[] (void *ptr)
	Operator delete [].

void	operator delete[] (void ptr, void vp)
	Only called by placement new[] when throwing an exception.

void *	operator new (size_t sz)

void *	operator new (size_t sz, void *vp)

void *	operator new[] (size_t sz)

void *	operator new[] (size_t sz, void *vp)

TObject &	operator= (const TObject &rhs)
	TObject assignment operator.

virtual void	Paint (Option_t *option="")
	This method must be overridden if a class wants to paint itself.

virtual void	Pop ()
	Pop on object drawn in a pad to the top of the display list.

virtual Int_t	Read (const char *name)
	Read contents of object with specified name from the current directory.

virtual void	RecursiveRemove (TObject *obj)
	Recursively remove this object from a list.

void	ResetBit (UInt_t f)

virtual void	SaveAs (const char filename="", Option_t option="") const
	Save this object in the file specified by filename.

virtual void	SavePrimitive (std::ostream &out, Option_t *option="")
	Save a primitive as a C++ statement(s) on output stream "out".

void	SetBit (UInt_t f)

void	SetBit (UInt_t f, Bool_t set)
	Set or unset the user status bits as specified in f.

virtual void	SetDrawOption (Option_t *option="")
	Set drawing option for object.

virtual void	SetUniqueID (UInt_t uid)
	Set the unique object id.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

virtual void	SysError (const char method, const char msgfmt,...) const
	Issue system error message.

R__ALWAYS_INLINE Bool_t	TestBit (UInt_t f) const

Int_t	TestBits (UInt_t f) const

virtual void	UseCurrentStyle ()
	Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked.

virtual void	Warning (const char method, const char msgfmt,...) const
	Issue warning message.

virtual Int_t	Write (const char *name=nullptr, Int_t option=0, Int_t bufsize=0)
	Write this object to the current directory.

virtual Int_t	Write (const char *name=nullptr, Int_t option=0, Int_t bufsize=0) const
	Write this object to the current directory.

Static Public Member Functions
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

static TDatabasePDG *	Instance ()
	static function

Static Public Member Functions inherited from TNamed
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

Static Public Member Functions inherited from TObject
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

static Longptr_t	GetDtorOnly ()
	Return destructor only flag.

static Bool_t	GetObjectStat ()
	Get status of object stat flag.

static void	SetDtorOnly (void *obj)
	Set destructor only flag.

static void	SetObjectStat (Bool_t stat)
	Turn on/off tracking of objects in the TObjectTable.

Protected Member Functions
	TDatabasePDG (const TDatabasePDG &db)
	hash-map from pdg-code to particle

void	BuildPdgMap () const
	Build fPdgMap mapping pdg-code to particle.

TDatabasePDG &	operator= (const TDatabasePDG &db)

virtual void	ReadPDGTableImpl (const char *filename, bool isParticleListInitializedWhenInvoking)

Protected Member Functions inherited from TObject
virtual void	DoError (int level, const char location, const char fmt, va_list va) const
	Interface to ErrorHandler (protected).

void	MakeZombie ()

Protected Attributes
TObjArray *	fListOfClasses

THashList *	fParticleList

TExMap *	fPdgMap

Protected Attributes inherited from TNamed
TString	fName

TString	fTitle

Additional Inherited Members
Public Types inherited from TObject
enum	{ kIsOnHeap = 0x01000000 , kNotDeleted = 0x02000000 , kZombie = 0x04000000 , kInconsistent = 0x08000000 , kBitMask = 0x00ffffff }

enum	{ kSingleKey = (1ULL << ( 0 )) , kOverwrite = (1ULL << ( 1 )) , kWriteDelete = (1ULL << ( 2 )) }

enum	EDeprecatedStatusBits { kObjInCanvas = (1ULL << ( 3 )) }

enum	EStatusBits { kCanDelete = (1ULL << ( 0 )) , kMustCleanup = (1ULL << ( 3 )) , kIsReferenced = (1ULL << ( 4 )) , kHasUUID = (1ULL << ( 5 )) , kCannotPick = (1ULL << ( 6 )) , kNoContextMenu = (1ULL << ( 8 )) , kInvalidObject = (1ULL << ( 13 )) }

Protected Types inherited from TObject
enum	{ kOnlyPrepStep = (1ULL << ( 3 )) }

#include <TDatabasePDG.h>

Inheritance diagram for TDatabasePDG:

[legend]

Constructor & Destructor Documentation

◆ TDatabasePDG() [1/2]

TDatabasePDG::TDatabasePDG ( const TDatabasePDG & db )

inlineprotected

hash-map from pdg-code to particle

Definition at line 29 of file TDatabasePDG.h.

◆ TDatabasePDG() [2/2]

TDatabasePDG::TDatabasePDG ( )

Create PDG database.

Initialization of the DB has to be done via explicit call to ReadDataBasePDG (also done by GetParticle methods)

Definition at line 68 of file TDatabasePDG.cxx.

◆ ~TDatabasePDG()

TDatabasePDG::~TDatabasePDG ( )

override

Cleanup the PDG database.

Definition at line 85 of file TDatabasePDG.cxx.

Member Function Documentation

◆ AddAntiParticle()

TParticlePDG * TDatabasePDG::AddAntiParticle	(	const char *	Name,
		Int_t	PdgCode
	)

virtual

assuming particle has already been defined

Definition at line 193 of file TDatabasePDG.cxx.

◆ AddParticle()

TParticlePDG * TDatabasePDG::AddParticle	(	const char *	name,
		const char *	title,
		Double_t	mass,
		Bool_t	stable,
		Double_t	width,
		Double_t	charge,
		const char *	ParticleClass,
		Int_t	PDGcode,
		Int_t	Anti = `-1`,
		Int_t	TrackingCode = `0`
	)

virtual

Particle definition normal constructor.

If the particle is set to be stable, the decay width parameter does have no meaning and can be set to any value. The parameters granularity, LowerCutOff and HighCutOff are used for the construction of the mean free path look up tables. The granularity will be the number of logwise energy points for which the mean free path will be calculated.

Definition at line 156 of file TDatabasePDG.cxx.

◆ Browse()

void TDatabasePDG::Browse ( TBrowser * b )

overridevirtual

browse data base

Reimplemented from TObject.

Definition at line 775 of file TDatabasePDG.cxx.

◆ BuildPdgMap()

void TDatabasePDG::BuildPdgMap ( ) const

protected

Build fPdgMap mapping pdg-code to particle.

Initial size is set so as to be able to hold at least 600 particles: 521 in default table, ALICE adds 54 more. To be revisited after LHC discovers SUSY.

Definition at line 127 of file TDatabasePDG.cxx.

◆ Class()

static TClass * TDatabasePDG::Class ( )

static

Returns: TClass describing this class

◆ Class_Name()

static const char * TDatabasePDG::Class_Name ( )

static

Returns: Name of this class

◆ Class_Version()

static constexpr Version_t TDatabasePDG::Class_Version ( )

inlinestaticconstexpr

Returns: Version of this class

Definition at line 83 of file TDatabasePDG.h.

◆ ConvertGeant3ToPdg()

Int_t TDatabasePDG::ConvertGeant3ToPdg ( Int_t Geant3number ) const

virtual

Converts Geant3 particle codes to PDG convention.

(Geant4 uses PDG convention already) Source: BaBar User Guide, Neil I. Geddes,

see Conversion table

with some fixes by PB, marked with (PB) below. Checked against PDG listings from 2000.

Paul Balm, Nov 19, 2001

Definition at line 287 of file TDatabasePDG.cxx.

◆ ConvertIsajetToPdg()

Int_t TDatabasePDG::ConvertIsajetToPdg ( Int_t isaNumber ) const

virtual

Converts the ISAJET Particle number into the PDG MC number.

Definition at line 409 of file TDatabasePDG.cxx.

◆ ConvertPdgToGeant3()

Int_t TDatabasePDG::ConvertPdgToGeant3 ( Int_t pdgNumber ) const

virtual

Converts pdg code to geant3 id.

Definition at line 350 of file TDatabasePDG.cxx.

◆ DeclFileName()

static const char * TDatabasePDG::DeclFileName ( )

inlinestatic

Returns: Name of the file containing the class declaration

Definition at line 83 of file TDatabasePDG.h.

◆ GetParticle() [1/2]

TParticlePDG * TDatabasePDG::GetParticle ( const char * name ) const

Get a pointer to the particle object according to the name given.

Definition at line 229 of file TDatabasePDG.cxx.

◆ GetParticle() [2/2]

TParticlePDG * TDatabasePDG::GetParticle ( Int_t pdgCode ) const

Get a pointer to the particle object according to the MC code number.

Definition at line 248 of file TDatabasePDG.cxx.

◆ GetParticleClass()

TParticleClassPDG * TDatabasePDG::GetParticleClass ( const char * name )

inline

Definition at line 68 of file TDatabasePDG.h.

◆ Instance()

TDatabasePDG * TDatabasePDG::Instance ( )

static

static function

Definition at line 106 of file TDatabasePDG.cxx.

◆ IsA()

TClass * TDatabasePDG::IsA ( ) const

inlineoverridevirtual

Returns: TClass describing current object

Reimplemented from TObject.

Definition at line 83 of file TDatabasePDG.h.

◆ IsFolder()

Bool_t TDatabasePDG::IsFolder ( ) const

inlineoverridevirtual

Returns kTRUE in case object contains browsable objects (like containers or lists of other objects).

Reimplemented from TObject.

Definition at line 77 of file TDatabasePDG.h.

◆ operator=()

TDatabasePDG & TDatabasePDG::operator= ( const TDatabasePDG & db )

inlineprotected

Definition at line 33 of file TDatabasePDG.h.

◆ ParticleList()

const THashList * TDatabasePDG::ParticleList ( ) const

inline

Definition at line 73 of file TDatabasePDG.h.

◆ Print()

void TDatabasePDG::Print ( Option_t * opt = "" ) const

overridevirtual

Print contents of PDG database.

Reimplemented from TObject.

Definition at line 264 of file TDatabasePDG.cxx.

◆ ReadPDGTable()

void TDatabasePDG::ReadPDGTable ( const char * filename = "" )

virtual

read list of particles from a file if the particle list does not exist, it is created, otherwise particles are added to the existing list See $ROOTSYS/etc/pdg_table.txt to see the file format

Definition at line 767 of file TDatabasePDG.cxx.

◆ ReadPDGTableImpl()

void TDatabasePDG::ReadPDGTableImpl	(	const char *	filename,
		bool	isParticleListInitializedWhenInvoking
	)

protectedvirtual

Definition at line 574 of file TDatabasePDG.cxx.

◆ Streamer()

void TDatabasePDG::Streamer ( TBuffer & R__b )

overridevirtual

Stream an object of class TObject.

Reimplemented from TObject.

◆ StreamerNVirtual()

void TDatabasePDG::StreamerNVirtual ( TBuffer & ClassDef_StreamerNVirtual_b )

inline

Definition at line 83 of file TDatabasePDG.h.

◆ WritePDGTable()

Int_t TDatabasePDG::WritePDGTable ( const char * filename )

virtual

write contents of the particle DB into a file

Definition at line 784 of file TDatabasePDG.cxx.

Member Data Documentation

◆ fListOfClasses

TObjArray* TDatabasePDG::fListOfClasses

protected

Definition at line 25 of file TDatabasePDG.h.

◆ fParticleList

THashList* TDatabasePDG::fParticleList

protected

Definition at line 24 of file TDatabasePDG.h.

◆ fPdgMap

TExMap* TDatabasePDG::fPdgMap

mutableprotected

Definition at line 26 of file TDatabasePDG.h.

Libraries for TDatabasePDG:

[legend]

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

montecarlo/eg/inc/TDatabasePDG.h
montecarlo/eg/src/TDatabasePDG.cxx

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Constructor & Destructor Documentation

◆ TDatabasePDG() [1/2]

◆ TDatabasePDG() [2/2]

◆ ~TDatabasePDG()

Member Function Documentation

◆ AddAntiParticle()

◆ AddParticle()

◆ Browse()

◆ BuildPdgMap()

◆ Class()

◆ Class_Name()

◆ Class_Version()

◆ ConvertGeant3ToPdg()

◆ ConvertIsajetToPdg()

◆ ConvertPdgToGeant3()

◆ DeclFileName()

◆ GetParticle() [1/2]

◆ GetParticle() [2/2]

◆ GetParticleClass()

◆ Instance()

◆ IsA()

◆ IsFolder()

◆ operator=()

◆ ParticleList()

◆ Print()

◆ ReadPDGTable()

◆ ReadPDGTableImpl()

◆ Streamer()

◆ StreamerNVirtual()

◆ WritePDGTable()

Member Data Documentation

◆ fListOfClasses

◆ fParticleList

◆ fPdgMap