[PWGCF] removed physical primary condition in MC for phi meson (AliceO2Group#14413)

Co-authored-by: Prottay Das <[email protected]>

Author: prottayCMT

PWGCF/Tasks/correlations.cxx

@@ -434,6 +434,17 @@ struct CorrelationTask {
   bool checkObject(TTrack& track)
   {
     if constexpr (step <= CorrelationContainer::kCFStepAnaTopology) {
+      // If using MC trigger PDGs, allow ONLY those PDGs to bypass isPhysicalPrimary
+      if (!cfgMcTriggerPDGs->empty()) {
+        // track has pdgCode in this compilation branch (you only call checkObject where that is true)
+        const bool isWantedTrigger =
+          std::find(cfgMcTriggerPDGs->begin(), cfgMcTriggerPDGs->end(), track.pdgCode()) != cfgMcTriggerPDGs->end();
+        if (isWantedTrigger) {
+          return true; // allow phi, K*, etc. even if not physical primary
+        }
+        // For everything else keep original definition
+        return track.isPhysicalPrimary();
+      }
       return track.isPhysicalPrimary();
     } else if constexpr (step == CorrelationContainer::kCFStepTrackedOnlyPrim) {
       return track.isPhysicalPrimary() && (track.flags() & aod::cfmcparticle::kReconstructed);