[PWGJE] Rho spectra in signal and reference events (#10090)

Author: dajones2

PWGJE/Tasks/jetHadronRecoil.cxx

@@ -117,6 +117,8 @@ struct JetHadronRecoil {
                               {"hDeltaRPart", "Particle #DeltaR;#DeltaR;#frac{1}{N_{jets}}#frac{dN_{jets}}{d#DeltaR}", {HistType::kTH1F, {{80, 0.0, 0.24}}}},
                               {"hDeltaRpT", "jet p_{T} vs #DeltaR;p_{T,jet};#DeltaR", {HistType::kTH2F, {{300, -100, 200}, {80, 0.0, 0.24}}}},
                               {"hDeltaRpTPart", "Particle jet p_{T} vs #DeltaR;p_{T,jet};#DeltaR", {HistType::kTH2F, {{200, 0, 200}, {80, 0.0, 0.24}}}},
+                              {"hRhoSignal", "Signal Rho bkg;#rho;entries", {HistType::kTH1F, {{220, 0, 220}}}},
+                              {"hRhoReference", "Reference Rho bkg;#rho;entries", {HistType::kTH1F, {{220, 0, 220}}}},
                               {"hDeltaRSignal", "#DeltaR;#DeltaR;#frac{dN_{jets}}{d#DeltaR}", {HistType::kTH1F, {{80, 0.0, 0.24}}}},
                               {"hDeltaRSignalPart", "Particle #DeltaR;#DeltaR;#frac{1}{N_{jets}}#frac{dN_{jets}}{d#DeltaR}", {HistType::kTH1F, {{80, 0.0, 0.24}}}},
                               {"hDeltaRpTSignal", "jet p_{T} vs #DeltaR;p_{T,jet};#DeltaR", {HistType::kTH2F, {{300, -100, 200}, {80, 0.0, 0.24}}}},
@@ -197,10 +199,12 @@ struct JetHadronRecoil {
       if (isSigCol) {
         registry.fill(HIST("hNtrig"), 1.5, weight);
         registry.fill(HIST("hSigEventTriggers"), nTT, weight);
+        registry.fill(HIST("hRhoSignal"), rho, weight);
       }
       if (!isSigCol) {
         registry.fill(HIST("hNtrig"), 0.5, weight);
         registry.fill(HIST("hRefEventTriggers"), nTT, weight);
+        registry.fill(HIST("hRhoReference"), rho, weight);
       }
     }