Add precision to covariance matrix elements (E. Fragiacomo)

diff --git a/ITS/AliITSClusterFinderV2SSD.cxx b/ITS/AliITSClusterFinderV2SSD.cxx
index dc9d463f3c96242c06a23c2f4f6b4bcb0d343c68..3e46291731ad4b1e7bec1676309c3f2240b28f3b 100644 (file)
--- a/ITS/AliITSClusterFinderV2SSD.cxx
+++ b/ITS/AliITSClusterFinderV2SSD.cxx
@@ -920,19 +920,26 @@ FindClustersSSD(Ali1Dcluster* neg, Int_t nn,
        milab[3]=(((ip<<10) + j)<<10) + idet; // pos|neg|det
        Int_t info[3] = {pos[ip].GetNd(),neg[j].GetNd(),fNlayer[fModule]};
 
-       lp[2]=0.0022*0.0022;  //SigmaY2
-       lp[3]=0.110*0.110;  //SigmaZ2
+       lp[2]=4.968e-06;     // 0.00223*0.00223;  //SigmaY2
+       lp[3]=0.012;         // 0.110*0.110;  //SigmaZ2
        // out-of-diagonal element of covariance matrix
        if( (info[0]==1) && (info[1]==1) ) lp[5]=-0.00012;
        else if ( (info[0]>1) && (info[1]>1) ) { 
-         lp[2]=0.0016*0.0016;  //SigmaY2
-         lp[3]=0.08*0.08;  //SigmaZ2
-         lp[5]=-0.00006;
+         lp[2]=2.63e-06;    // 0.0016*0.0016;  //SigmaY2
+         lp[3]=0.0065;      // 0.08*0.08;   //SigmaZ2
+         lp[5]=-6.48e-05;
        }
        else {
-         lp[3]=0.093*0.093;
-         if (info[0]==1) { lp[5]=-0.00014;}
-         else { lp[2]=0.0017*0.0017; lp[5]=-0.00004;}
+         lp[2]=4.80e-06;      // 0.00219*0.00219
+         lp[3]=0.0093;        // 0.0964*0.0964;
+         if (info[0]==1) {
+           lp[5]=-0.00014;
+         }
+         else { 
+           lp[2]=2.79e-06;    // 0.0017*0.0017; 
+           lp[3]=0.00935;     // 0.967*0.967;
+           lp[5]=-4.32e-05;
+         }
        }
 
        AliITSRecPoint * cl2;
@@ -1030,22 +1037,29 @@ FindClustersSSD(Ali1Dcluster* neg, Int_t nn,
            milab[3]=(((ip<<10) + in)<<10) + idet; // pos|neg|det
            Int_t info[3] = {pos[ip].GetNd(),neg[in].GetNd(),fNlayer[fModule]};
            
-       lp[2]=0.0022*0.0022;  //SigmaY2
-       lp[3]=0.110*0.110;  //SigmaZ2
+       lp[2]=4.968e-06;     // 0.00223*0.00223;  //SigmaY2
+       lp[3]=0.012;         // 0.110*0.110;  //SigmaZ2
        // out-of-diagonal element of covariance matrix
        if( (info[0]==1) && (info[1]==1) ) lp[5]=-0.00012;
        else if ( (info[0]>1) && (info[1]>1) ) { 
-         lp[2]=0.0016*0.0016;  //SigmaY2
-         lp[3]=0.08*0.08;  //SigmaZ2
-         lp[5]=-0.00006;
+         lp[2]=2.63e-06;    // 0.0016*0.0016;  //SigmaY2
+         lp[3]=0.0065;      // 0.08*0.08;   //SigmaZ2
+         lp[5]=-6.48e-05;
        }
        else {
-         lp[3]=0.093*0.093;
-         if (info[0]==1) { lp[5]=-0.00014;}
-         else { lp[2]=0.0017*0.0017; lp[5]=-0.00004;}
+         lp[2]=4.80e-06;      // 0.00219*0.00219
+         lp[3]=0.0093;        // 0.0964*0.0964;
+         if (info[0]==1) {
+           lp[5]=-0.00014;
+         }
+         else { 
+           lp[2]=2.79e-06;    // 0.0017*0.0017; 
+           lp[3]=0.00935;     // 0.967*0.967;
+           lp[5]=-4.32e-05;
+         }
        }
 
-           AliITSRecPoint * cl2;
+       AliITSRecPoint * cl2;
            if(clusters){
              
              cl2 = new (cl[ncl]) AliITSRecPoint(milab,lp,info);
@@ -1106,19 +1120,26 @@ FindClustersSSD(Ali1Dcluster* neg, Int_t nn,
            milab[3]=(((ip2<<10) + in)<<10) + idet; // pos|neg|det
            Int_t info[3] = {pos[ip2].GetNd(),neg[in].GetNd(),fNlayer[fModule]};
            
-       lp[2]=0.0022*0.0022;  //SigmaY2
-       lp[3]=0.110*0.110;  //SigmaZ2
+       lp[2]=4.968e-06;     // 0.00223*0.00223;  //SigmaY2
+       lp[3]=0.012;         // 0.110*0.110;  //SigmaZ2
        // out-of-diagonal element of covariance matrix
        if( (info[0]==1) && (info[1]==1) ) lp[5]=-0.00012;
        else if ( (info[0]>1) && (info[1]>1) ) { 
-         lp[2]=0.0016*0.0016;  //SigmaY2
-         lp[3]=0.08*0.08;  //SigmaZ2
-         lp[5]=-0.00006;
+         lp[2]=2.63e-06;    // 0.0016*0.0016;  //SigmaY2
+         lp[3]=0.0065;      // 0.08*0.08;   //SigmaZ2
+         lp[5]=-6.48e-05;
        }
        else {
-         lp[3]=0.093*0.093;
-         if (info[0]==1) { lp[5]=-0.00014;}
-         else { lp[2]=0.0017*0.0017; lp[5]=-0.00004;}
+         lp[2]=4.80e-06;      // 0.00219*0.00219
+         lp[3]=0.0093;        // 0.0964*0.0964;
+         if (info[0]==1) {
+           lp[5]=-0.00014;
+         }
+         else { 
+           lp[2]=2.79e-06;    // 0.0017*0.0017; 
+           lp[3]=0.00935;     // 0.967*0.967;
+           lp[5]=-4.32e-05;
+         }
        }
 
            AliITSRecPoint * cl2;
@@ -1215,19 +1236,26 @@ FindClustersSSD(Ali1Dcluster* neg, Int_t nn,
          milab[3]=(((ip<<10) + jn)<<10) + idet; // pos|neg|det
          Int_t info[3] = {pos[ip].GetNd(),neg[jn].GetNd(),fNlayer[fModule]};
 
-       lp[2]=0.0022*0.0022;  //SigmaY2
-       lp[3]=0.110*0.110;  //SigmaZ2
+       lp[2]=4.968e-06;     // 0.00223*0.00223;  //SigmaY2
+       lp[3]=0.012;         // 0.110*0.110;  //SigmaZ2
        // out-of-diagonal element of covariance matrix
        if( (info[0]==1) && (info[1]==1) ) lp[5]=-0.00012;
        else if ( (info[0]>1) && (info[1]>1) ) { 
-         lp[2]=0.0016*0.0016;  //SigmaY2
-         lp[3]=0.08*0.08;  //SigmaZ2
-         lp[5]=-0.00006;
+         lp[2]=2.63e-06;    // 0.0016*0.0016;  //SigmaY2
+         lp[3]=0.0065;      // 0.08*0.08;   //SigmaZ2
+         lp[5]=-6.48e-05;
        }
        else {
-         lp[3]=0.093*0.093;
-         if (info[0]==1) { lp[5]=-0.00014;}
-         else { lp[2]=0.0017*0.0017; lp[5]=-0.00004;}
+         lp[2]=4.80e-06;      // 0.00219*0.00219
+         lp[3]=0.0093;        // 0.0964*0.0964;
+         if (info[0]==1) {
+           lp[5]=-0.00014;
+         }
+         else { 
+           lp[2]=2.79e-06;    // 0.0017*0.0017; 
+           lp[3]=0.00935;     // 0.967*0.967;
+           lp[5]=-4.32e-05;
+         }
        }
 
          AliITSRecPoint * cl2;
@@ -1291,19 +1319,26 @@ FindClustersSSD(Ali1Dcluster* neg, Int_t nn,
          milab[3]=(((ip<<10) + jn2)<<10) + idet; // pos|neg|det
          Int_t info[3] = {pos[ip].GetNd(),neg[jn2].GetNd(),fNlayer[fModule]};
 
-       lp[2]=0.0022*0.0022;  //SigmaY2
-       lp[3]=0.110*0.110;  //SigmaZ2
+       lp[2]=4.968e-06;     // 0.00223*0.00223;  //SigmaY2
+       lp[3]=0.012;         // 0.110*0.110;  //SigmaZ2
        // out-of-diagonal element of covariance matrix
        if( (info[0]==1) && (info[1]==1) ) lp[5]=-0.00012;
        else if ( (info[0]>1) && (info[1]>1) ) { 
-         lp[2]=0.0016*0.0016;  //SigmaY2
-         lp[3]=0.08*0.08;  //SigmaZ2
-         lp[5]=-0.00006;
+         lp[2]=2.63e-06;    // 0.0016*0.0016;  //SigmaY2
+         lp[3]=0.0065;      // 0.08*0.08;   //SigmaZ2
+         lp[5]=-6.48e-05;
        }
        else {
-         lp[3]=0.093*0.093;
-         if (info[0]==1) { lp[5]=-0.00014;}
-         else { lp[2]=0.0017*0.0017; lp[5]=-0.00004;}
+         lp[2]=4.80e-06;      // 0.00219*0.00219
+         lp[3]=0.0093;        // 0.0964*0.0964;
+         if (info[0]==1) {
+           lp[5]=-0.00014;
+         }
+         else { 
+           lp[2]=2.79e-06;    // 0.0017*0.0017; 
+           lp[3]=0.00935;     // 0.967*0.967;
+           lp[5]=-4.32e-05;
+         }
        }
 
          AliITSRecPoint * cl2;
@@ -1431,19 +1466,26 @@ FindClustersSSD(Ali1Dcluster* neg, Int_t nn,
        milab[3]=(((ip<<10) + j)<<10) + idet; // pos|neg|det
        Int_t info[3] = {pos[ip].GetNd(),neg[j].GetNd(),fNlayer[fModule]};
 
-       lp[2]=0.0022*0.0022;  //SigmaY2
-       lp[3]=0.110*0.110;  //SigmaZ2
+       lp[2]=4.968e-06;     // 0.00223*0.00223;  //SigmaY2
+       lp[3]=0.012;         // 0.110*0.110;  //SigmaZ2
        // out-of-diagonal element of covariance matrix
        if( (info[0]==1) && (info[1]==1) ) lp[5]=-0.00012;
        else if ( (info[0]>1) && (info[1]>1) ) { 
-         lp[2]=0.0016*0.0016;  //SigmaY2
-         lp[3]=0.08*0.08;  //SigmaZ2
-         lp[5]=-0.00006;
+         lp[2]=2.63e-06;    // 0.0016*0.0016;  //SigmaY2
+         lp[3]=0.0065;      // 0.08*0.08;   //SigmaZ2
+         lp[5]=-6.48e-05;
        }
        else {
-         lp[3]=0.093*0.093;
-         if (info[0]==1) { lp[5]=-0.00014;}
-         else { lp[2]=0.0017*0.0017; lp[5]=-0.00004;}
+         lp[2]=4.80e-06;      // 0.00219*0.00219
+         lp[3]=0.0093;        // 0.0964*0.0964;
+         if (info[0]==1) {
+           lp[5]=-0.00014;
+         }
+         else { 
+           lp[2]=2.79e-06;    // 0.0017*0.0017; 
+           lp[3]=0.00935;     // 0.967*0.967;
+           lp[5]=-4.32e-05;
+         }
        }
 
        AliITSRecPoint * cl2;
@@ -1563,19 +1605,26 @@ FindClustersSSD(Ali1Dcluster* neg, Int_t nn,
        milab[3]=(((ip<<10) + j)<<10) + idet; // pos|neg|det
        Int_t info[3] = {pos[ip].GetNd(),neg[j].GetNd(),fNlayer[fModule]};
 
-       lp[2]=0.0022*0.0022;  //SigmaY2
-       lp[3]=0.110*0.110;  //SigmaZ2
+       lp[2]=4.968e-06;     // 0.00223*0.00223;  //SigmaY2
+       lp[3]=0.012;         // 0.110*0.110;  //SigmaZ2
        // out-of-diagonal element of covariance matrix
        if( (info[0]==1) && (info[1]==1) ) lp[5]=-0.00012;
        else if ( (info[0]>1) && (info[1]>1) ) { 
-         lp[2]=0.0016*0.0016;  //SigmaY2
-         lp[3]=0.08*0.08;  //SigmaZ2
-         lp[5]=-0.00006;
+         lp[2]=2.63e-06;    // 0.0016*0.0016;  //SigmaY2
+         lp[3]=0.0065;      // 0.08*0.08;   //SigmaZ2
+         lp[5]=-6.48e-05;
        }
        else {
-         lp[3]=0.093*0.093;
-         if (info[0]==1) { lp[5]=-0.00014;}
-         else { lp[2]=0.0017*0.0017; lp[5]=-0.00004;}
+         lp[2]=4.80e-06;      // 0.00219*0.00219
+         lp[3]=0.0093;        // 0.0964*0.0964;
+         if (info[0]==1) {
+           lp[5]=-0.00014;
+         }
+         else { 
+           lp[2]=2.79e-06;    // 0.0017*0.0017; 
+           lp[3]=0.00935;     // 0.967*0.967;
+           lp[5]=-4.32e-05;
+         }
        }
 
        AliITSRecPoint * cl2;
@@ -1658,19 +1707,26 @@ FindClustersSSD(Ali1Dcluster* neg, Int_t nn,
        milab[3]=(((i<<10) + j)<<10) + idet; // pos|neg|det
        Int_t info[3] = {pos[i].GetNd(),neg[j].GetNd(),fNlayer[fModule]};
 
-       lp[2]=0.0022*0.0022;  //SigmaY2
-       lp[3]=0.110*0.110;  //SigmaZ2
+       lp[2]=4.968e-06;     // 0.00223*0.00223;  //SigmaY2
+       lp[3]=0.012;         // 0.110*0.110;  //SigmaZ2
        // out-of-diagonal element of covariance matrix
        if( (info[0]==1) && (info[1]==1) ) lp[5]=-0.00012;
        else if ( (info[0]>1) && (info[1]>1) ) { 
-         lp[2]=0.0016*0.0016;  //SigmaY2
-         lp[3]=0.08*0.08;  //SigmaZ2
-         lp[5]=-0.00006;
+         lp[2]=2.63e-06;    // 0.0016*0.0016;  //SigmaY2
+         lp[3]=0.0065;      // 0.08*0.08;   //SigmaZ2
+         lp[5]=-6.48e-05;
        }
        else {
-         lp[3]=0.093*0.093;
-         if (info[0]==1) { lp[5]=-0.00014;}
-         else { lp[2]=0.0017*0.0017; lp[5]=-0.00004;}
+         lp[2]=4.80e-06;      // 0.00219*0.00219
+         lp[3]=0.0093;        // 0.0964*0.0964;
+         if (info[0]==1) {
+           lp[5]=-0.00014;
+         }
+         else { 
+           lp[2]=2.79e-06;    // 0.0017*0.0017; 
+           lp[3]=0.00935;     // 0.967*0.967;
+           lp[5]=-4.32e-05;
+         }
        }
 
        AliITSRecPoint * cl2;
@@ -1744,14 +1800,15 @@ FindClustersSSD(Ali1Dcluster* neg, Int_t nn,
              milab[3]=( (i<<10) << 10 ) + idet; // pos|neg|det
              Int_t info[3] = {pos[i].GetNd(),0,fNlayer[fModule]};
              
-             // out-of-diagonal element of covariance matrix
-             if (info[0]==1) lp[5]=0.0065;
-             else lp[5]=0.0093;
-             
-             lp[2]=0.0022*0.0022;  //SigmaY2
-             lp[3]=0.110*0.110;  //SigmaZ2
+             lp[2]=4.968e-06;     // 0.00223*0.00223;  //SigmaY2
+             lp[3]=0.012;         // 0.110*0.110;  //SigmaZ2
              lp[5]=-0.00012; // out-of-diagonal element of covariance matrix
-             
+             if (info[0]>1) {
+               lp[2]=4.80e-06;
+               lp[3]=0.0093;
+               lp[5]=0.00014;
+             }
+                     
              AliITSRecPoint * cl2;
              if(clusters){
                cl2 = new (cl[ncl]) AliITSRecPoint(milab,lp,info);          
@@ -1801,9 +1858,14 @@ FindClustersSSD(Ali1Dcluster* neg, Int_t nn,
              milab[3]=( j << 10 ) + idet; // pos|neg|det
              Int_t info[3]={0,(Int_t)neg[j].GetNd(),fNlayer[fModule]};
              
-             lp[2]=0.0022*0.0022;  //SigmaY2
-             lp[3]=0.110*0.110;  //SigmaZ2
+             lp[2]=4.968e-06;     // 0.00223*0.00223;  //SigmaY2
+             lp[3]=0.012;         // 0.110*0.110;  //SigmaZ2
              lp[5]=-0.00012; // out-of-diagonal element of covariance matrix
+             if (info[0]>1) {
+               lp[2]=2.79e-06;
+               lp[3]=0.00935;
+               lp[5]=-4.32e-05;
+             }
              
              AliITSRecPoint * cl2;
              if(clusters){
@@ -1854,10 +1916,11 @@ FindClustersSSD(Ali1Dcluster* neg, Int_t nn,
          milab[3]=( (i<<10) << 10 ) + idet; // pos|neg|det
          Int_t info[3] = {(Int_t)pos[i].GetNd(),0,fNlayer[fModule]};
          
-         lp[2]=0.031*0.031;  //SigmaY2
-         lp[3]=1.15*1.15;  //SigmaZ2
-         lp[5]=-0.036;
-         
+         lp[2]=0.00098;    // 0.031*0.031;  //SigmaY2
+         lp[3]=1.329;      // 1.15*1.15;  //SigmaZ2
+         lp[5]=-0.0359;
+         if(info[0]>1) lp[2]=0.00097;
+
          AliITSRecPoint * cl2;
          if(clusters){
            cl2 = new (cl[ncl]) AliITSRecPoint(milab,lp,info);      
@@ -1903,9 +1966,10 @@ FindClustersSSD(Ali1Dcluster* neg, Int_t nn,
          milab[3]=( j << 10 ) + idet; // pos|neg|det
          Int_t info[3] = {0,(Int_t)neg[j].GetNd(),fNlayer[fModule]};
          
-         lp[2]=0.0085*0.0085;  //SigmaY2
-         lp[3]=1.15*1.15;  //SigmaZ2
-         lp[5]=0.0093;
+         lp[2]=7.27e-05;   // 0.0085*0.0085;  //SigmaY2
+         lp[3]=1.33;       // 1.15*1.15;  //SigmaZ2
+         lp[5]=0.00931;
+         if(info[1]>1) lp[2]=6.91e-05;
          
          AliITSRecPoint * cl2;
          if(clusters){
@@ -1942,3 +2006,4 @@ FindClustersSSD(Ali1Dcluster* neg, Int_t nn,
   delete [] positivepair;
 
 }
+