Using default Root containers for Root tags bigger than v4-00-01. Removing fast wrapp...

[u/mrichter/AliRoot.git] / ITS / AliCascadeVertex.cxx

diff --git a/ITS/AliCascadeVertex.cxx b/ITS/AliCascadeVertex.cxx
index d732940bbdaaaeccf6ea49a1fdf0101591090517..3671dfa9609af61759dc163bd9b43f9efe8dc9dd 100644 (file)
--- a/ITS/AliCascadeVertex.cxx
+++ b/ITS/AliCascadeVertex.cxx
@@ -18,27 +18,14 @@
 //
 //    Origin: Christian Kuhn, IReS, Strasbourg, christian.kuhn@ires.in2p3.fr
 //-------------------------------------------------------------------------
-#include <iostream.h>
 #include <TMath.h>
 
 #include "AliCascadeVertex.h"
-#include "AliV0vertex.h"
 #include "AliITStrackV2.h"
+#include "AliV0vertex.h"
 
 ClassImp(AliCascadeVertex)
 
-AliCascadeVertex::AliCascadeVertex() : TObject() {
-  //--------------------------------------------------------------------
-  // Default constructor  (Xi-)
-  //--------------------------------------------------------------------
-  fPdgCode=kXiMinus;
-  fEffMass=1.32131;
-  fChi2=1.e+33;
-  fPos[0]=fPos[1]=fPos[2]=0.;
-  fPosCov[0]=fPosCov[1]=fPosCov[2]=fPosCov[3]=fPosCov[4]=fPosCov[5]=0.;
-}
-
-
 
 inline Double_t det(Double_t a00, Double_t a01, Double_t a10, Double_t a11){
   // determinant 2x2
@@ -54,15 +41,14 @@ inline Double_t det (Double_t a00,Double_t a01,Double_t a02,
 }
 
 
-
 AliCascadeVertex::AliCascadeVertex(const AliV0vertex &v,const AliITStrackV2 &t) {
   //--------------------------------------------------------------------
   // Main constructor
   //--------------------------------------------------------------------
   fPdgCode=kXiMinus;
 
-  fV0lab[0]=v.GetNlabel(); fV0lab[1]=v.GetPlabel();
-  fBachLab=t.GetLabel(); 
+  fV0idx[0]=v.GetNindex(); fV0idx[1]=v.GetPindex();
+  fBachIdx=t.GetLabel(); 
 
   //Trivial estimation of the vertex parameters
   Double_t pt, phi, x, par[5];
@@ -97,13 +83,8 @@ AliCascadeVertex::AliCascadeVertex(const AliV0vertex &v,const AliITStrackV2 &t)
   // position of the cascade decay
   
   fPos[0]=0.5*(x1+xm); fPos[1]=0.5*(y1+ym); fPos[2]=0.5*(z1+zm);
-  
-  
-  // momenta of the bachelor and the V0
-  
-  fBachMom[0]=px1; fBachMom[1]=py1; fBachMom[2]=pz1; 
-  fV0mom[0]=px2; fV0mom[1]=py2; fV0mom[2]=pz2;
-  
+    
+
   // invariant mass of the cascade (default is Ximinus)
   
   Double_t e1=TMath::Sqrt(0.13957*0.13957 + px1*px1 + py1*py1 + pz1*pz1);
@@ -112,82 +93,18 @@ AliCascadeVertex::AliCascadeVertex(const AliV0vertex &v,const AliITStrackV2 &t)
   fEffMass=TMath::Sqrt((e1+e2)*(e1+e2)-
     (px1+px2)*(px1+px2)-(py1+py2)*(py1+py2)-(pz1+pz2)*(pz1+pz2));
 
-  fChi2=7.;   
 
-}
-
-void AliCascadeVertex::ChangeMassHypothesis(Int_t code) {
-  //--------------------------------------------------------------------
-  // This function changes the mass hypothesis for this cascade
-  //--------------------------------------------------------------------
-  
-  // HOW TO DISTINGUISH BETWEEN A XIMINUS AND A XIPLUS ??????????
-  // SAME QUESTION FOR (ANTI-)OMEGA'S (here) ... AND FOR (ANTI-)LAMBDAS (in AliV0vertex) ??
-  // -> NEED ADDITIONAL CONDITION ON BACHELOR AND V0 PDGCODE !!!! BUT in the ANALYSIS MACROS !!!
-  
-  Double_t massBach, massV0;
-
-  switch (code) {
-
-  case kXiMinus:
-    massBach=0.13957; massV0=1.11568; break;
-  case kXiPlusBar:
-    massBach=0.13957; massV0=1.11568; break;
-  case kOmegaMinus: 
-    massBach=0.49368; massV0=1.11568; break;
-  case kOmegaPlusBar: 
-    massBach=0.49368; massV0=1.11568; break;
-
-  default:
-    cerr<<"AliCascadeVertex::ChangeMassHypothesis: ";
-    cerr<<"invalide PDG code ! Assuming XiMinus's...\n";
-    massBach=0.13957; massV0=1.11568; break;
-  }
-
-  Double_t px1=fBachMom[0], py1=fBachMom[1], pz1=fBachMom[2]; 
-  Double_t px2=fV0mom[0], py2=fV0mom[1], pz2=fV0mom[2];
-
-  Double_t e1=TMath::Sqrt(massBach*massBach + px1*px1 + py1*py1 + pz1*pz1);
-  Double_t e2=TMath::Sqrt(massV0*massV0 + px2*px2 + py2*py2 + pz2*pz2);
-  fEffMass=TMath::Sqrt((e1+e2)*(e1+e2)-
-    (px1+px2)*(px1+px2)-(py1+py2)*(py1+py2)-(pz1+pz2)*(pz1+pz2));
+  // momenta of the bachelor and the V0
   
-  fPdgCode=code;
-}
-
-void 
-AliCascadeVertex::GetPxPyPz(Double_t &px, Double_t &py, Double_t &pz) const {
-  //--------------------------------------------------------------------
-  // This function returns the cascade momentum (global)
-  //--------------------------------------------------------------------
-  px=fV0mom[0]+fBachMom[0]; 
-  py=fV0mom[1]+fBachMom[1]; 
-  pz=fV0mom[2]+fBachMom[2]; 
-}
+  fBachMom[0]=px1; fBachMom[1]=py1; fBachMom[2]=pz1; 
+  v.GetNPxPyPz(px2,py2,pz2);
+  fV0mom[0][0]=px2; fV0mom[0][1]=py2; fV0mom[0][2]=pz2;
+  v.GetPPxPyPz(px2,py2,pz2);
+  fV0mom[1][0]=px2; fV0mom[1][1]=py2; fV0mom[1][2]=pz2;
 
-void AliCascadeVertex::GetXYZ(Double_t &x, Double_t &y, Double_t &z) const {
-  //--------------------------------------------------------------------
-  // This function returns cascade position (global)
-  //--------------------------------------------------------------------
-  x=fPos[0]; 
-  y=fPos[1]; 
-  z=fPos[2]; 
-}
 
-Double_t AliCascadeVertex::GetD(Double_t x0, Double_t y0, Double_t z0) const {
-  //--------------------------------------------------------------------
-  // This function returns the cascade impact parameter
-  //--------------------------------------------------------------------
+  fChi2=7.;   
 
-  Double_t x=fPos[0],y=fPos[1],z=fPos[2];
-  Double_t px=fV0mom[0]+fBachMom[0];
-  Double_t py=fV0mom[1]+fBachMom[1];
-  Double_t pz=fV0mom[2]+fBachMom[2];
+}
 
-  Double_t dx=(y0-y)*pz - (z0-z)*py; 
-  Double_t dy=(x0-x)*pz - (z0-z)*px;
-  Double_t dz=(x0-x)*py - (y0-y)*px;
-  Double_t d=TMath::Sqrt((dx*dx+dy*dy+dz*dz)/(px*px+py*py+pz*pz));
 
-  return d;
-}