Changes in the covariance matrix for the tpc hlt tracks in order to optimize the...
authorcvetan <cvetan@f7af4fe6-9843-0410-8265-dc069ae4e863>
Mon, 8 Nov 2004 10:59:45 +0000 (10:59 +0000)
committercvetan <cvetan@f7af4fe6-9843-0410-8265-dc069ae4e863>
Mon, 8 Nov 2004 10:59:45 +0000 (10:59 +0000)
HLT/ITS/AliL3ITStrack.cxx

index 88085a9c1cdc369b01a38664a9334ade9c950b1a..8a5ab8257641dda7de8e56c36af92d7587e45c66 100644 (file)
@@ -111,11 +111,13 @@ AliL3ITStrack::AliL3ITStrack(AliESDHLTtrack& t, Double_t zvertex) throw (const C
   fP4=1./radius;
 
   //and covariance matrix
-  fC00=0.4*0.4;
-  fC11=0.4*0.4;
-  fC22=0.006*0.006;
-  fC33=0.006*0.006;
-  fC44=(0.005+0.025*t.GetPt())*(0.005+0.025*t.GetPt())*fP4*fP4;
+  fC22=0.005*0.005;
+  fC33=0.005*0.005;
+  fC00=fC22*82.97*82.97;
+  fC11=fC33*82.97*82.97;
+  //  fC44=(0.005+0.025*t.GetPt())*(0.005+0.025*t.GetPt())*fP4*fP4;
+  //  fC44=(0.01+0.01*t.GetPt())*(0.01+0.01*t.GetPt())*fP4*fP4;
+  fC44=0.01*0.01*fP4*fP4;
 
   fC10=0;
   fC20=0;   fC21=0;