TParticle

class description - source file - inheritance tree

class TParticle : public TObject, public TAttLine, public TAtt3D


    public:

                TParticle TParticle()
                TParticle TParticle(Int_t pdg, Int_t status, Int_t mother1, Int_t mother2, Int_t daughter1, Int_t daughter2, Double_t px, Double_t py, Double_t pz, Double_t etot, Double_t vx, Double_t vy, Double_t vz, Double_t time)
                TParticle TParticle(Int_t pdg, Int_t status, Int_t mother1, Int_t mother2, Int_t daughter1, Int_t daughter2, const TLorentzVector& p, const TLorentzVector& v)
                TParticle TParticle(const TParticle& part)
             virtual void ~TParticle()
                    Int_t Beauty()
                    Int_t Charm()
           static TClass* Class()
            virtual Int_t DistancetoPrimitive(Int_t px, Int_t py)
                 Double_t Energy() const
                 Double_t Eta() const
             virtual void ExecuteEvent(Int_t event, Int_t px, Int_t py)
                 Double_t GetCalcMass() const
                    Int_t GetDaughter(Int_t i) const
                    Int_t GetFirstDaughter() const
                    Int_t GetFirstMother() const
                    Int_t GetLastDaughter() const
                 Double_t GetMass()
                    Int_t GetMother(Int_t i) const
      virtual const char* GetName() const
                    Int_t GetNDaughters() const
            TParticlePDG* GetPDG(Int_t mode = 0)
                    Int_t GetPdgCode() const
                     void GetPolarisation(TVector3& v)
                    Int_t GetSecondMother() const
                    Int_t GetStatusCode() const
      virtual const char* GetTitle() const
                  Float_t GetWeight() const
          virtual TClass* IsA() const
                     void Momentum(TLorentzVector& v)
                 Double_t P() const
             virtual void Paint(Option_t* option)
                 Double_t Phi() const
             virtual void Print(Option_t* option) const
                     void ProductionVertex(TLorentzVector& v)
                 Double_t Pt() const
                 Double_t Px() const
                 Double_t Py() const
                 Double_t Pz() const
                     void SetCalcMass(Double_t mass)
                     void SetDaughter(int i, int code)
                     void SetFirstDaughter(int code)
                     void SetFirstMother(int code)
                     void SetLastDaughter(int code)
                     void SetLastMother(int code)
                     void SetMomentum(Double_t px, Double_t py, Double_t pz, Double_t e)
                     void SetMomentum(const TLorentzVector& p)
                     void SetMother(int i, int code)
                     void SetPolarisation(Double_t polx, Double_t poly, Double_t polz)
                     void SetPolarisation(const TVector3& v)
                     void SetProductionVertex(Double_t vx, Double_t vy, Double_t vz, Double_t t)
                     void SetProductionVertex(const TLorentzVector& v)
                     void SetWeight(Float_t weight = 1)
             virtual void ShowMembers(TMemberInspector& insp, char* parent)
             virtual void Sizeof3D() const
                    Int_t Strangeness()
             virtual void Streamer(TBuffer& b)
                     void StreamerNVirtual(TBuffer& b)
                 Double_t T() const
                 Double_t Theta() const
                 Double_t Vx() const
                 Double_t Vy() const
                 Double_t Vz() const

Data Members


    protected:

              Int_t fPdgCode      PDG code of the particle
              Int_t fStatusCode   generation status code
              Int_t fMother[2]    Indices of the mother particles
              Int_t fDaughter[2]  Indices of the daughter particles
            Float_t fWeight       particle weight
           Double_t fCalcMass     Calculated mass
           Double_t fPx           x component of momentum
           Double_t fPy           y component of momentum
           Double_t fPz           z component of momentum
           Double_t fE            Energy
           Double_t fVx           x of production vertex
           Double_t fVy           y of production vertex
           Double_t fVz           z of production vertex
           Double_t fVt           t of production vertex
           Double_t fPolarTheta   Polar angle of polarisation
           Double_t fPolarPhi     azymutal angle of polarisation
      TParticlePDG* fParticlePDG  ! reference to the particle record in PDG database

Class Description

TParticle() : fPdgCode(0), fStatusCode(0), fWeight(0),fCalcMass(0), fPx(0), fPy(0), fPz(0), fE(0), fVx(0), fVy(0), fVz(0), fVt(0), fPolarTheta(0), fPolarPhi(0)

TParticle(Int_t pdg, Int_t status, Int_t mother1, Int_t mother2, Int_t daughter1, Int_t daughter2, Double_t px, Double_t py, Double_t pz, Double_t etot, Double_t vx, Double_t vy, Double_t vz, Double_t time): fPdgCode(pdg), fStatusCode(status), fWeight(1.),fPx(px), fPy(py), fPz(pz), fE(etot), fVx(vx), fVy(vy), fVz(vz), fVt(time)

TParticle(Int_t pdg, Int_t status, Int_t mother1, Int_t mother2, Int_t daughter1, Int_t daughter2, const TLorentzVector &p, const TLorentzVector &v) : fPdgCode(pdg), fStatusCode(status), fWeight(1.),fPx(p.Px()), fPy(p.Py()), fPz(p.Pz()), fE(p.E()), fVx(v.X()), fVy(v.Y()), fVz(v.Z()), fVt(v.T())

TParticle(const TParticle &p) : TObject(p), TAttLine(p), TAtt3D(p)

 copy constructor

~TParticle()

Int_t DistancetoPrimitive(Int_t px, Int_t py)

*-*-*-*-*-*-*-*Compute distance from point px,py to a primary track*-*-*-*
*-*            ====================================================
*-*
*-*  Compute the closest distance of approach from point px,py to each segment
*-*  of a track.
*-*  The distance is computed in pixels units.
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*

void ExecuteEvent(Int_t, Int_t, Int_t)

*-*-*-*-*-*-*-*-*-*-*Execute action corresponding to one event*-*-*-*
*-*                  =========================================

const char* GetName() const

TParticlePDG* GetPDG(Int_t mode)

 returns a pointer to the TParticlePDG object using the pdgcode
 if mode == 0 (default) always get a fresh value for the pointer.
 if mode != 0 this function returns directly the previously
              computed pointer from a previous call
 One can use mode=1 (faster) when the TParticle object is not part of a
 TClonesArray used in split mode in a Root TTree.

void GetPolarisation(TVector3 &v)

const char* GetTitle() const

void Paint(Option_t *option)

  Paint a primary track

void Print(Option_t *) const

  Print the internals of the primary vertex particle

TParticlePDG* pdg = ((TParticle*)this)->GetPDG();

void SetPolarisation(Double_t polx, Double_t poly, Double_t polz)

void Sizeof3D() const

*-*-*-*-*-*Return total X3D size of this primary*-*-*-*-*-*-*
*-*        =====================================

void Streamer(TBuffer &R__b)

 Stream an object of class TParticle.

Inline Functions

              Int_t GetStatusCode() const
              Int_t GetPdgCode() const
              Int_t GetFirstMother() const
              Int_t GetMother(Int_t i) const
              Int_t GetSecondMother() const
              Int_t GetFirstDaughter() const
              Int_t GetDaughter(Int_t i) const
              Int_t GetLastDaughter() const
           Double_t GetCalcMass() const
           Double_t GetMass()
              Int_t GetNDaughters() const
            Float_t GetWeight() const
              Int_t Beauty()
              Int_t Charm()
              Int_t Strangeness()
               void Momentum(TLorentzVector& v)
               void ProductionVertex(TLorentzVector& v)
           Double_t Vx() const
           Double_t Vy() const
           Double_t Vz() const
           Double_t T() const
           Double_t Px() const
           Double_t Py() const
           Double_t Pz() const
           Double_t P() const
           Double_t Pt() const
           Double_t Energy() const
           Double_t Eta() const
           Double_t Phi() const
           Double_t Theta() const
               void SetFirstMother(int code)
               void SetMother(int i, int code)
               void SetLastMother(int code)
               void SetFirstDaughter(int code)
               void SetDaughter(int i, int code)
               void SetLastDaughter(int code)
               void SetCalcMass(Double_t mass)
               void SetPolarisation(const TVector3& v)
               void SetWeight(Float_t weight = 1)
               void SetMomentum(Double_t px, Double_t py, Double_t pz, Double_t e)
               void SetMomentum(const TLorentzVector& p)
               void SetProductionVertex(Double_t vx, Double_t vy, Double_t vz, Double_t t)
               void SetProductionVertex(const TLorentzVector& v)
            TClass* Class()
            TClass* IsA() const
               void ShowMembers(TMemberInspector& insp, char* parent)
               void StreamerNVirtual(TBuffer& b)

Author: Rene Brun, Federico Carminati 26/04/99
Last update: root/eg:$Name: $:$Id: TParticle.cxx,v 1.8 2002/05/18 08:21:59 brun Exp $

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