message: removing pileup in gen events for PbPb
diff: @@ -1128,6 +1128,7 @@ void AliAnalysisTaskDiHadCorrelHighPt::UserExec(Option_t *)
  Printf("No MC particle branch found");
  return;
  }
  + if(fSystem=="PbPb"&&AliAnalysisUtils::IsPileupInGeneratedEvent(fmcEvent,"Hijing")) return;
  AliVVertex * mcVertex = (AliVVertex* ) fmcEvent->GetPrimaryVertex();
  fPV[2] = mcVertex->GetZ();
  