Start study of primary pion fraction 2

Author: scannito

PWGLF/Tasks/Strangeness/phik0shortanalysis.cxx

@@ -1389,16 +1389,16 @@ struct Phik0shortanalysis {
         if (!selectionPion<false, true>(track, false))
           continue;
 
-        if (std::abs(mcTrack.y()) > cfgYAcceptance)
-          continue;
-
         if (!track.has_mcParticle())
           continue;
 
         auto mcTrack = track.mcParticle_as<aod::McParticles>();
         if (std::abs(mcTrack.pdgCode()) != 211)
           continue;
 
+        if (std::abs(mcTrack.y()) > cfgYAcceptance)
+          continue;
+
         // Primary pion selection
         if (mcTrack.isPhysicalPrimary()) {