message: Eff improvement.
diff: @@ -1190,6 +1190,7 @@ void AliAnalysisTaskForMCpPb::ProcessMCParticles(AliMCEvent* fMCEventArg)
  }
  if ( !mcParticle->IsPrimary() ) continue;
  if ( mcParticle->Charge() == 0 ) continue;
  + if ( !(mcParticle->Eta() < -2.5 && mcParticle->Eta() > -3.7 ) ) continue;
  if ( TMath::Abs(mcParticle->PdgCode()) == 13 ) {
  if ( nGoodMuonsMC < 2 ) {
  // cout << "Ok" << nGoodMuonsMC << endl;
  