message: Do not store all particles
diff: @@ -611,7 +611,7 @@ void AliAnalysisTaskUpcFilter::RunAODMC(TClonesArray *arrayMC, AliAODMCHeader *h
  AliAODMCParticle *aodmc = dynamic_cast<AliAODMCParticle*>(arrayMC->At(imc));
  if(!aodmc) continue;
  - //if(aodmc->GetMother() >= 0) continue;
  + if(aodmc->GetMother() >= 0) continue;
  TParticle *part = fUPCEvent->AddMCParticle();
  part->SetMomentum(aodmc->Px(), aodmc->Py(), aodmc->Pz(), aodmc->E());
  