Major update of the framework

[u/mrichter/AliRoot.git] / PWG3 / dielectron / AliDielectronPair.h

diff --git a/PWG3/dielectron/AliDielectronPair.h b/PWG3/dielectron/AliDielectronPair.h
index fa5addd15eb4b3ee01c248f07e59db83ba691bcd..f9fe3d5afc33944c481772b8c5d0959b08b27be3 100644 (file)
--- a/PWG3/dielectron/AliDielectronPair.h
+++ b/PWG3/dielectron/AliDielectronPair.h
@@ -57,7 +57,7 @@ public:
   virtual Double_t Xv() const { return fPair.GetX(); }
   virtual Double_t Yv() const { return fPair.GetY(); }
   virtual Double_t Zv() const { return fPair.GetZ(); }
-  virtual Bool_t   XvYvZv(Double_t x[3]) const { x[0]=Xv(); x[1]=Xv(); x[2]=Zv(); return kTRUE; }
+  virtual Bool_t   XvYvZv(Double_t x[3]) const { x[0]=Xv(); x[1]=Yv(); x[2]=Zv(); return kTRUE; }
   
   virtual Double_t OneOverPt() const { return Pt()>0.?1./Pt():0.; }  //TODO: check
   virtual Double_t Phi()       const { return fPair.GetPhi();}
@@ -68,7 +68,10 @@ public:
   virtual Double_t M() const { return fPair.GetMass(); }
   
   virtual Double_t Eta() const { return fPair.GetEta();}
-  virtual Double_t Y()  const  { return TLorentzVector(Px(),Py(),Pz(),E()).Rapidity();}
+  virtual Double_t Y()  const  { 
+    if((E()*E()-Px()*Px()-Py()*Py()-Pz()*Pz())>0.) return TLorentzVector(Px(),Py(),Pz(),E()).Rapidity();
+    else return -1111.;
+  }
   
   virtual Short_t Charge() const    { return fPair.GetQ();}
   virtual Int_t   GetLabel() const  { return fLabel;      }
@@ -84,18 +87,29 @@ public:
   void SetLabel(Int_t label) {fLabel=label;}
   
   //inter leg information
-  Double_t OpeningAngle()         const { return fD1.GetAngle(fD2);                   }
-  Double_t DistanceDaughters()    const { return fD1.GetDistanceFromParticle(fD2);    }
-  Double_t DistanceDaughtersXY()  const { return fD1.GetDistanceFromParticleXY(fD2);  }
-  Double_t DeviationDaughters()   const { return fD1.GetDeviationFromParticle(fD2);   }
-  Double_t DeviationDaughtersXY() const { return fD1.GetDeviationFromParticleXY(fD2); }
+  Double_t OpeningAngle()         const { return fD1.GetAngle(fD2);                             }
+  Double_t DistanceDaughters()    const { return fD1.GetDistanceFromParticle(fD2);              }
+  Double_t DistanceDaughtersXY()  const { return fD1.GetDistanceFromParticleXY(fD2);            }
+  Double_t DeviationDaughters()   const { return fD1.GetDeviationFromParticle(fD2);             }
+  Double_t DeviationDaughtersXY() const { return fD1.GetDeviationFromParticleXY(fD2);           }
+  Double_t DeltaEta()             const { return TMath::Abs(fD1.GetEta()-fD2.GetEta());         }
+  Double_t DeltaPhi()             const { Double_t dphi=TMath::Abs(fD1.GetPhi()-fD2.GetPhi());
+                                          return (dphi>TMath::Pi())?dphi-TMath::Pi():dphi;      }
+  // calculate cos(theta*) and phi* in HE and CS pictures
+  void GetThetaPhiCM(Double_t &thetaHE, Double_t &phiHE, Double_t &thetaCS, Double_t &phiCS) const;
   
+  Double_t ThetaPhiCM(Bool_t isHE, Bool_t isTheta) const;
+  static Double_t ThetaPhiCM(const AliVParticle* d1, const AliVParticle* d2, 
+                                              const Bool_t isHE, const Bool_t isTheta);
   // internal KF particle
   const AliKFParticle& GetKFParticle()       const { return fPair; }
   const AliKFParticle& GetKFFirstDaughter()  const { return fD1;   }
   const AliKFParticle& GetKFSecondDaughter() const { return fD2;   }
   
   // daughter references
+  void SetRefFirstDaughter(AliVParticle * const track)  {fRefD1 = track;}
+  void SetRefSecondDaughter(AliVParticle * const track) {fRefD2 = track;}
+  
   AliVParticle* GetFirstDaughter()   const { return dynamic_cast<AliVParticle*>(fRefD1.GetObject()); }
   AliVParticle* GetSecondDaughter()  const { return dynamic_cast<AliVParticle*>(fRefD2.GetObject()); }