[PWGJE] Fix leading-jet selection (Rec) and event normalization

Author: Arvindiiti

PWGJE/Tasks/nucleiInJets.cxx

@@ -2570,13 +2570,12 @@ struct nucleiInJets {
     }
 
     // Select the accepted detector-level leading jet before considering matches.
-    int32_t leadingDetJetId = -1;
+    int64_t leadingDetJetId = -1;
     float leadingDetJetPt = -1.f;
     if (isWithLeadingJet) {
       for (const auto& mcdjet : mcdjets) {
-        const float mcdJetPtForResponseSel = usebkgSubractionMC ? mcdjet.pt() - backgroundRho * jetArea : mcdjet.pt();
-        if (isConeAxisAccepted(mcdjet.eta()) && mcdJetPtForResponseSel > leadingDetJetPt) {
-          leadingDetJetPt = mcdJetPtForResponseSel;
+        if (isConeAxisAccepted(mcdjet.eta()) && mcdjet.pt() > leadingDetJetPt) {
+          leadingDetJetPt = mcdjet.pt();
           leadingDetJetId = mcdjet.globalIndex();
         }
       }
@@ -2585,7 +2584,7 @@ struct nucleiInJets {
       }
     }
 
-    std::vector<int32_t> mcdJetIds{};
+    std::vector<int64_t> mcdJetIds{};
     std::vector<double> mcdJetPt{};
     std::vector<double> mcdJetPhi{};
     std::vector<double> mcdJetEta{};