class TDatabasePDG: public TNamed


  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)/my_pdg_table.txt

  2. 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.

Function Members (Methods)

public:

virtual	~TDatabasePDG()
void	TObject::AbstractMethod(const char* method) const
virtual TParticlePDG*	AddAntiParticle(const char* Name, Int_t PdgCode)
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)
virtual void	TObject::AppendPad(Option_t* option = "")
virtual void	Browse(TBrowser* b)
static TClass*	Class()
virtual const char*	TObject::ClassName() const
virtual void	TNamed::Clear(Option_t* option = "")
virtual TObject*	TNamed::Clone(const char* newname = "") const
virtual Int_t	TNamed::Compare(const TObject* obj) const
virtual Int_t	ConvertGeant3ToPdg(Int_t Geant3Number) const
virtual Int_t	ConvertIsajetToPdg(Int_t isaNumber) const
virtual Int_t	ConvertPdgToGeant3(Int_t pdgNumber) const
virtual void	TNamed::Copy(TObject& named) const
virtual void	TObject::Delete(Option_t* option = "")MENU
virtual Int_t	TObject::DistancetoPrimitive(Int_t px, Int_t py)
virtual void	TObject::Draw(Option_t* option = "")
virtual void	TObject::DrawClass() constMENU
virtual TObject*	TObject::DrawClone(Option_t* option = "") constMENU
virtual void	TObject::Dump() constMENU
virtual void	TObject::Error(const char* method, const char* msgfmt) const
virtual void	TObject::Execute(const char* method, const char* params, Int_t* error = 0)
virtual void	TObject::Execute(TMethod* method, TObjArray* params, Int_t* error = 0)
virtual void	TObject::ExecuteEvent(Int_t event, Int_t px, Int_t py)
virtual void	TObject::Fatal(const char* method, const char* msgfmt) const
virtual void	TNamed::FillBuffer(char*& buffer)
virtual TObject*	TObject::FindObject(const char* name) const
virtual TObject*	TObject::FindObject(const TObject* obj) const
virtual Option_t*	TObject::GetDrawOption() const
static Long_t	TObject::GetDtorOnly()
virtual const char*	TObject::GetIconName() const
virtual const char*	TNamed::GetName() const
virtual char*	TObject::GetObjectInfo(Int_t px, Int_t py) const
static Bool_t	TObject::GetObjectStat()
virtual Option_t*	TObject::GetOption() const
TParticlePDG*	GetParticle(Int_t pdgCode) const
TParticlePDG*	GetParticle(const char* name) const
TParticleClassPDG*	GetParticleClass(const char* name)
virtual const char*	TNamed::GetTitle() const
virtual UInt_t	TObject::GetUniqueID() const
virtual Bool_t	TObject::HandleTimer(TTimer* timer)
virtual ULong_t	TNamed::Hash() const
virtual void	TObject::Info(const char* method, const char* msgfmt) const
virtual Bool_t	TObject::InheritsFrom(const char* classname) const
virtual Bool_t	TObject::InheritsFrom(const TClass* cl) const
virtual void	TObject::Inspect() constMENU
static TDatabasePDG*	Instance()
void	TObject::InvertBit(UInt_t f)
virtual TClass*	IsA() const
virtual Bool_t	TObject::IsEqual(const TObject* obj) const
virtual Bool_t	IsFolder() const
Bool_t	TObject::IsOnHeap() const
virtual Bool_t	TNamed::IsSortable() const
Bool_t	TObject::IsZombie() const
virtual void	TNamed::ls(Option_t* option = "") const
void	TObject::MayNotUse(const char* method) const
virtual Bool_t	TObject::Notify()
void	TObject::Obsolete(const char* method, const char* asOfVers, const char* removedFromVers) const
void	TObject::operator delete(void* ptr)
void	TObject::operator delete(void* ptr, void* vp)
void	TObject::operator delete[](void* ptr)
void	TObject::operator delete[](void* ptr, void* vp)
void*	TObject::operator new(size_t sz)
void*	TObject::operator new(size_t sz, void* vp)
void*	TObject::operator new[](size_t sz)
void*	TObject::operator new[](size_t sz, void* vp)
virtual void	TObject::Paint(Option_t* option = "")
const THashList*	ParticleList() const
virtual void	TObject::Pop()
virtual void	Print(Option_t* opt = "") const
virtual Int_t	TObject::Read(const char* name)
virtual void	ReadPDGTable(const char* filename = "")
virtual void	TObject::RecursiveRemove(TObject* obj)
void	TObject::ResetBit(UInt_t f)
virtual void	TObject::SaveAs(const char* filename = "", Option_t* option = "") constMENU
virtual void	TObject::SavePrimitive(ostream& out, Option_t* option = "")
void	TObject::SetBit(UInt_t f)
void	TObject::SetBit(UInt_t f, Bool_t set)
virtual void	TObject::SetDrawOption(Option_t* option = "")MENU
static void	TObject::SetDtorOnly(void* obj)
virtual void	TNamed::SetName(const char* name)MENU
virtual void	TNamed::SetNameTitle(const char* name, const char* title)
static void	TObject::SetObjectStat(Bool_t stat)
virtual void	TNamed::SetTitle(const char* title = "")MENU
virtual void	TObject::SetUniqueID(UInt_t uid)
virtual void	ShowMembers(TMemberInspector& insp) const
virtual Int_t	TNamed::Sizeof() const
virtual void	Streamer(TBuffer&)
void	StreamerNVirtual(TBuffer& ClassDef_StreamerNVirtual_b)
virtual void	TObject::SysError(const char* method, const char* msgfmt) const
	TDatabasePDG()
Bool_t	TObject::TestBit(UInt_t f) const
Int_t	TObject::TestBits(UInt_t f) const
virtual void	TObject::UseCurrentStyle()
virtual void	TObject::Warning(const char* method, const char* msgfmt) const
virtual Int_t	TObject::Write(const char* name = 0, Int_t option = 0, Int_t bufsize = 0)
virtual Int_t	TObject::Write(const char* name = 0, Int_t option = 0, Int_t bufsize = 0) const
virtual Int_t	WritePDGTable(const char* filename)

protected:

void	BuildPdgMap() const
virtual void	TObject::DoError(int level, const char* location, const char* fmt, va_list va) const
void	TObject::MakeZombie()
TDatabasePDG&	operator=(const TDatabasePDG& db)
	TDatabasePDG(const TDatabasePDG& db)

Data Members

public:

static TObject::<anonymous>	TObject::kBitMask
static TObject::EStatusBits	TObject::kCanDelete
static TObject::EStatusBits	TObject::kCannotPick
static TObject::EStatusBits	TObject::kHasUUID
static TObject::EStatusBits	TObject::kInvalidObject
static TObject::<anonymous>	TObject::kIsOnHeap
static TObject::EStatusBits	TObject::kIsReferenced
static TObject::EStatusBits	TObject::kMustCleanup
static TObject::EStatusBits	TObject::kNoContextMenu
static TObject::<anonymous>	TObject::kNotDeleted
static TObject::EStatusBits	TObject::kObjInCanvas
static TObject::<anonymous>	TObject::kOverwrite
static TObject::<anonymous>	TObject::kSingleKey
static TObject::<anonymous>	TObject::kWriteDelete
static TObject::<anonymous>	TObject::kZombie

protected:

TObjArray*	fListOfClasses	list of classes (leptons etc.)
TString	TNamed::fName	object identifier
THashList*	fParticleList	list of PDG particles
TExMap*	fPdgMap	!hash-map from pdg-code to particle
TString	TNamed::fTitle	object title
static TDatabasePDG*	fgInstance	protect against multiple instances

Class Charts

Inheritance Inherited Members Includes Libraries

Function documentation

TDatabasePDG()

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

~TDatabasePDG()

 Cleanup the PDG database.

TDatabasePDG* Instance()

static function

void BuildPdgMap() const

 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.

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. 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.

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

 assuming particle has already been defined

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

void Print(Option_t* opt = "") const

 Print contents of PDG database.

Int_t ConvertGeant3ToPdg(Int_t Geant3Number) const

 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

Int_t ConvertPdgToGeant3(Int_t pdgNumber) const

 Converts pdg code to geant3 id

Int_t ConvertIsajetToPdg(Int_t isaNumber) const

  Converts the ISAJET Particle number into the PDG MC number

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 Browse(TBrowser* b)

browse data base

Int_t WritePDGTable(const char* filename)

 write contents of the particle DB into a file

TDatabasePDG(const TDatabasePDG& db)

 make copy-constructor and assigment protected since class cannot be copied

{ }

TDatabasePDG& operator=(const TDatabasePDG& db)

TParticleClassPDG* GetParticleClass(const char* name)

const THashList * ParticleList() const

{ return fParticleList; }

Bool_t IsFolder() const

{ return kTRUE; }