message: fix criterion for tagged photon in mixed event
  fix criterion for tagged photon in mixed event
diff: @@ -2608,7 +2608,7 @@ void AliAnalysisTaskPHOSPi0EtaToGammaGamma::EstimatePIDCutEfficiency()
  //if(!fPHOSClusterCuts->AcceptPhoton(ph1)) continue;
  //apply tight cut to photon1
  - if(ph1->GetNsigmaCPV() < 3 || ph1->GetNsigmaCoreDisp() > 2) continue;
  + if(ph1->GetNsigmaCPV() < 4 || ph1->GetNsigmaCoreDisp() > 2.5) continue;
  for(Int_t ev=0;ev<prevPHOS->GetSize();ev++){
  TClonesArray *mixPHOS = static_cast<TClonesArray*>(prevPHOS->At(ev));
  