TDatabasePDG.h

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// @(#)root/eg:$Id$
// Author: Pasha Murat   12/02/99
 
/*************************************************************************
 * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers.               *
 * All rights reserved.                                                  *
 *                                                                       *
 * For the licensing terms see $ROOTSYS/LICENSE.                         *
 * For the list of contributors see $ROOTSYS/README/CREDITS.             *
 *************************************************************************/
 
#ifndef ROOT_TDatabasePDG
#define ROOT_TDatabasePDG
 
#include "TParticlePDG.h"
#include "TParticleClassPDG.h"
 
class THashList;
class TExMap;
 
class TDatabasePDG: public TNamed {
 
protected:
   THashList           *fParticleList;     // list of PDG particles
   TObjArray           *fListOfClasses;    // list of classes (leptons etc.)
   mutable TExMap      *fPdgMap;           //!hash-map from pdg-code to particle
 
   // make copy-constructor and assigment protected since class cannot be copied
   TDatabasePDG(const TDatabasePDG& db)
     : TNamed(db), fParticleList(db.fParticleList),
     fListOfClasses(db.fListOfClasses), fPdgMap(0) { }
 
   TDatabasePDG& operator=(const TDatabasePDG& db)
   {if(this!=&db) {TNamed::operator=(db); fParticleList=db.fParticleList;
         fListOfClasses=db.fListOfClasses; fPdgMap=db.fPdgMap;}
      return *this;}
 
   void BuildPdgMap() const;
 
public:
 
   TDatabasePDG();
   virtual ~TDatabasePDG();
 
   static TDatabasePDG*  Instance();
 
   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 Int_t  ConvertGeant3ToPdg(Int_t Geant3Number) const;
   virtual Int_t  ConvertPdgToGeant3(Int_t pdgNumber) const;
   virtual Int_t  ConvertIsajetToPdg(Int_t isaNumber) const;
 
   virtual TParticlePDG* AddAntiParticle(const char* Name, Int_t PdgCode);
 
   TParticlePDG  *GetParticle(Int_t pdgCode) const;
   TParticlePDG  *GetParticle(const char *name) const;
 
   TParticleClassPDG* GetParticleClass(const char* name) {
      if (fParticleList == 0)  ((TDatabasePDG*)this)->ReadPDGTable();
      return (TParticleClassPDG*) fListOfClasses->FindObject(name);
   }
 
   const THashList *ParticleList() const { return fParticleList; }
 
   virtual void   Print(Option_t *opt = "") const;
 
   Bool_t IsFolder() const { return kTRUE; }
   virtual void   Browse(TBrowser* b);
 
   virtual void   ReadPDGTable (const char *filename = "");
   virtual Int_t  WritePDGTable(const char *filename);
 
   ClassDef(TDatabasePDG, 3);  // PDG particle database
};
 
#endif