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Reference Guide
TDatabasePDG Class Reference

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

  1. One can define the name in .rootrc file:

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

  1. One can use TDatabasePDG::ReadPDGTable method explicitly:

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. More...
 
virtual ~TDatabasePDG ()
 Cleanup the PDG database. More...
 
virtual TParticlePDGAddAntiParticle (const char *Name, Int_t PdgCode)
 assuming particle has already been defined More...
 
virtual TParticlePDGAddParticle (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. More...
 
virtual void Browse (TBrowser *b)
 browse data base More...
 
virtual Int_t ConvertGeant3ToPdg (Int_t Geant3Number) const
 Converts Geant3 particle codes to PDG convention. More...
 
virtual Int_t ConvertIsajetToPdg (Int_t isaNumber) const
 Converts the ISAJET Particle number into the PDG MC number. More...
 
virtual Int_t ConvertPdgToGeant3 (Int_t pdgNumber) const
 Converts pdg code to geant3 id. More...
 
TParticlePDGGetParticle (Int_t pdgCode) const
 Get a pointer to the particle object according to the MC code number. More...
 
TParticlePDGGetParticle (const char *name) const
 Get a pointer to the particle object according to the name given. More...
 
TParticleClassPDGGetParticleClass (const char *name)
 
Bool_t IsFolder () const
 Returns kTRUE in case object contains browsable objects (like containers or lists of other objects). More...
 
const THashListParticleList () const
 
virtual void Print (Option_t *opt="") const
 Print contents of PDG database. More...
 
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 More...
 
virtual Int_t WritePDGTable (const char *filename)
 write contents of the particle DB into a file More...
 
- Public Member Functions inherited from TNamed
 TNamed ()
 
 TNamed (const char *name, const char *title)
 
 TNamed (const TString &name, const TString &title)
 
 TNamed (const TNamed &named)
 TNamed copy ctor. More...
 
virtual ~TNamed ()
 TNamed destructor. More...
 
virtual void Clear (Option_t *option="")
 Set name and title to empty strings (""). More...
 
virtual TObjectClone (const char *newname="") const
 Make a clone of an object using the Streamer facility. More...
 
virtual Int_t Compare (const TObject *obj) const
 Compare two TNamed objects. More...
 
virtual void Copy (TObject &named) const
 Copy this to obj. More...
 
virtual void FillBuffer (char *&buffer)
 Encode TNamed into output buffer. More...
 
virtual const char * GetName () const
 Returns name of object. More...
 
virtual const char * GetTitle () const
 Returns title of object. More...
 
virtual ULong_t Hash () const
 Return hash value for this object. More...
 
virtual Bool_t IsSortable () const
 
virtual void ls (Option_t *option="") const
 List TNamed name and title. More...
 
TNamedoperator= (const TNamed &rhs)
 TNamed assignment operator. More...
 
virtual void SetName (const char *name)
 Set the name of the TNamed. More...
 
virtual void SetNameTitle (const char *name, const char *title)
 Set all the TNamed parameters (name and title). More...
 
virtual void SetTitle (const char *title="")
 Set the title of the TNamed. More...
 
virtual Int_t Sizeof () const
 Return size of the TNamed part of the TObject. More...
 
- Public Member Functions inherited from TObject
 TObject ()
 TObject constructor. More...
 
 TObject (const TObject &object)
 TObject copy ctor. More...
 
virtual ~TObject ()
 TObject destructor. More...
 
void AbstractMethod (const char *method) const
 Use this method to implement an "abstract" method that you don't want to leave purely abstract. More...
 
virtual void AppendPad (Option_t *option="")
 Append graphics object to current pad. More...
 
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. More...
 
virtual const char * ClassName () const
 Returns name of class to which the object belongs. More...
 
virtual void Delete (Option_t *option="")
 Delete this object. More...
 
virtual Int_t DistancetoPrimitive (Int_t px, Int_t py)
 Computes distance from point (px,py) to the object. More...
 
virtual void Draw (Option_t *option="")
 Default Draw method for all objects. More...
 
virtual void DrawClass () const
 Draw class inheritance tree of the class to which this object belongs. More...
 
virtual TObjectDrawClone (Option_t *option="") const
 Draw a clone of this object in the current selected pad for instance with: gROOT->SetSelectedPad(gPad). More...
 
virtual void Dump () const
 Dump contents of object on stdout. More...
 
virtual void Error (const char *method, const char *msgfmt,...) const
 Issue error message. More...
 
virtual void Execute (const char *method, const char *params, Int_t *error=0)
 Execute method on this object with the given parameter string, e.g. More...
 
virtual void Execute (TMethod *method, TObjArray *params, Int_t *error=0)
 Execute method on this object with parameters stored in the TObjArray. More...
 
virtual void ExecuteEvent (Int_t event, Int_t px, Int_t py)
 Execute action corresponding to an event at (px,py). More...
 
virtual void Fatal (const char *method, const char *msgfmt,...) const
 Issue fatal error message. More...
 
virtual TObjectFindObject (const char *name) const
 Must be redefined in derived classes. More...
 
virtual TObjectFindObject (const TObject *obj) const
 Must be redefined in derived classes. More...
 
virtual Option_tGetDrawOption () const
 Get option used by the graphics system to draw this object. More...
 
virtual const char * GetIconName () const
 Returns mime type name of object. More...
 
virtual char * GetObjectInfo (Int_t px, Int_t py) const
 Returns string containing info about the object at position (px,py). More...
 
virtual Option_tGetOption () const
 
virtual UInt_t GetUniqueID () const
 Return the unique object id. More...
 
virtual Bool_t HandleTimer (TTimer *timer)
 Execute action in response of a timer timing out. More...
 
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. More...
 
virtual void Info (const char *method, const char *msgfmt,...) const
 Issue info message. More...
 
virtual Bool_t InheritsFrom (const char *classname) const
 Returns kTRUE if object inherits from class "classname". More...
 
virtual Bool_t InheritsFrom (const TClass *cl) const
 Returns kTRUE if object inherits from TClass cl. More...
 
virtual void Inspect () const
 Dump contents of this object in a graphics canvas. More...
 
void InvertBit (UInt_t f)
 
virtual Bool_t IsEqual (const TObject *obj) const
 Default equal comparison (objects are equal if they have the same address in memory). More...
 
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). More...
 
virtual Bool_t Notify ()
 This method must be overridden to handle object notification. More...
 
void Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const
 Use this method to declare a method obsolete. More...
 
void operator delete (void *ptr)
 Operator delete. More...
 
void operator delete[] (void *ptr)
 Operator delete []. More...
 
voidoperator new (size_t sz)
 
voidoperator new (size_t sz, void *vp)
 
voidoperator new[] (size_t sz)
 
voidoperator new[] (size_t sz, void *vp)
 
TObjectoperator= (const TObject &rhs)
 TObject assignment operator. More...
 
virtual void Paint (Option_t *option="")
 This method must be overridden if a class wants to paint itself. More...
 
virtual void Pop ()
 Pop on object drawn in a pad to the top of the display list. More...
 
virtual Int_t Read (const char *name)
 Read contents of object with specified name from the current directory. More...
 
virtual void RecursiveRemove (TObject *obj)
 Recursively remove this object from a list. More...
 
void ResetBit (UInt_t f)
 
virtual void SaveAs (const char *filename="", Option_t *option="") const
 Save this object in the file specified by filename. More...
 
virtual void SavePrimitive (std::ostream &out, Option_t *option="")
 Save a primitive as a C++ statement(s) on output stream "out". More...
 
void SetBit (UInt_t f, Bool_t set)
 Set or unset the user status bits as specified in f. More...
 
void SetBit (UInt_t f)
 
virtual void SetDrawOption (Option_t *option="")
 Set drawing option for object. More...
 
virtual void SetUniqueID (UInt_t uid)
 Set the unique object id. More...
 
virtual void SysError (const char *method, const char *msgfmt,...) const
 Issue system error message. More...
 
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. More...
 
virtual void Warning (const char *method, const char *msgfmt,...) const
 Issue warning message. More...
 
virtual Int_t Write (const char *name=0, Int_t option=0, Int_t bufsize=0)
 Write this object to the current directory. More...
 
virtual Int_t Write (const char *name=0, Int_t option=0, Int_t bufsize=0) const
 Write this object to the current directory. More...
 

Static Public Member Functions

static TDatabasePDGInstance ()
 static function More...
 
- Static Public Member Functions inherited from TObject
static Long_t GetDtorOnly ()
 Return destructor only flag. More...
 
static Bool_t GetObjectStat ()
 Get status of object stat flag. More...
 
static void SetDtorOnly (void *obj)
 Set destructor only flag. More...
 
static void SetObjectStat (Bool_t stat)
 Turn on/off tracking of objects in the TObjectTable. More...
 

Protected Member Functions

 TDatabasePDG (const TDatabasePDG &db)
 hash-map from pdg-code to particle More...
 
void BuildPdgMap () const
 Build fPdgMap mapping pdg-code to particle. More...
 
TDatabasePDGoperator= (const TDatabasePDG &db)
 
- 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). More...
 
void MakeZombie ()
 

Protected Attributes

TObjArrayfListOfClasses
 
THashListfParticleList
 
TExMapfPdgMap
 
- 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 = BIT(0), kOverwrite = BIT(1), kWriteDelete = BIT(2) }
 
enum  EDeprecatedStatusBits { kObjInCanvas = BIT(3) }
 
enum  EStatusBits {
  kCanDelete = BIT(0), kMustCleanup = BIT(3), kIsReferenced = BIT(4), kHasUUID = BIT(5),
  kCannotPick = BIT(6), kNoContextMenu = BIT(8), kInvalidObject = BIT(13)
}
 

#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 ( )
virtual

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 180 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 143 of file TDatabasePDG.cxx.

◆ Browse()

void TDatabasePDG::Browse ( TBrowser b)
virtual

browse data base

Reimplemented from TObject.

Definition at line 736 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 123 of file TDatabasePDG.cxx.

◆ 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 266 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 388 of file TDatabasePDG.cxx.

◆ ConvertPdgToGeant3()

Int_t TDatabasePDG::ConvertPdgToGeant3 ( Int_t  pdgNumber) const
virtual

Converts pdg code to geant3 id.

Definition at line 329 of file TDatabasePDG.cxx.

◆ GetParticle() [1/2]

TParticlePDG * TDatabasePDG::GetParticle ( Int_t  pdgCode) const

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

Definition at line 232 of file TDatabasePDG.cxx.

◆ GetParticle() [2/2]

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

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

Definition at line 216 of file TDatabasePDG.cxx.

◆ GetParticleClass()

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

Definition at line 67 of file TDatabasePDG.h.

◆ Instance()

TDatabasePDG * TDatabasePDG::Instance ( )
static

static function

Definition at line 106 of file TDatabasePDG.cxx.

◆ IsFolder()

Bool_t TDatabasePDG::IsFolder ( ) const
inlinevirtual

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

Reimplemented from TObject.

Definition at line 76 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 72 of file TDatabasePDG.h.

◆ Print()

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

Print contents of PDG database.

Reimplemented from TNamed.

Definition at line 243 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 559 of file TDatabasePDG.cxx.

◆ WritePDGTable()

Int_t TDatabasePDG::WritePDGTable ( const char *  filename)
virtual

write contents of the particle DB into a file

Definition at line 745 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:
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The documentation for this class was generated from the following files: