update from Prabhat

diff --git a/PWGCF/Correlations/DPhi/AliAnalysisTaskDptDptCorrelations.cxx b/PWGCF/Correlations/DPhi/AliAnalysisTaskDptDptCorrelations.cxx
index 17e2cdb155870c40055288b06d79573d55ef5300..4a707d37ba475b888a065a73b6761eaead233480 100644 (file)
--- a/PWGCF/Correlations/DPhi/AliAnalysisTaskDptDptCorrelations.cxx
+++ b/PWGCF/Correlations/DPhi/AliAnalysisTaskDptDptCorrelations.cxx
@@ -1227,16 +1227,15 @@ void  AliAnalysisTaskDptDptCorrelations::UserExec(Option_t */*option*/)
          Double_t DCAX = pos[0] - vertexX;
          Double_t DCAY = pos[1] - vertexY;
          Double_t DCAZ = pos[2] - vertexZ;
-                         
+               
+         Double_t DCAXY = TMath::Sqrt((DCAX*DCAX) + (DCAY*DCAY));
+         
          if (DCAZ     <  _dcaZMin || 
              DCAZ     >  _dcaZMax ||
-             DCAX     <  _dcaXYMin ||
-             DCAX     >  _dcaXYMax ||
-             DCAY     <  _dcaXYMin ||
-             DCAY     >  _dcaXYMax) continue; 
+             DCAXY    >  _dcaXYMax ) continue; 
          //==== QA ===========================
          _dcaz->Fill(DCAZ);
-         _dcaxy->Fill(DCAX);
+         _dcaxy->Fill(DCAXY);
          _etadis->Fill(eta);
          _phidis->Fill(phi);
          //===================================