[PWGJE] taskEmcExtensiveMcQa: Add more cluster energy informations

- Add centrality as an extra axis, for pp this should be set to size 1 from -1.5 to -0.5, since the default value for cent is -1.f
- Add leading particle energy axis, its true generated momentum and the ratio between these two
- Add number of contributors to clusters as an extra axis
- Add a new histogram which stores the cluster energy vs the number of contributors vs the leading particle energy deposition vs the leading particle momentum vs the ratio of the last two vs cent
- Increased detail for PoI:
  - Electrons are now seperated between priamry and secondary
  - Add Muons
  - Split Hadron in charged and neutral, where neutral means Neutron, K0L, K0S, Lambda0, Xi0 and Sigma0

Author: mhemmer-cern

PWGJE/Tasks/taskEmcExtensiveMcQa.cxx

@@ -24,6 +24,7 @@
 
 #include <CCDB/BasicCCDBManager.h>
 #include <CommonConstants/MathConstants.h>
+#include <CommonConstants/PhysicsConstants.h>
 #include <EMCALBase/Geometry.h>
 #include <Framework/ASoA.h>
 #include <Framework/AnalysisDataModel.h>
@@ -35,6 +36,8 @@
 #include <Framework/InitContext.h>
 #include <Framework/runDataProcessing.h>
 
+#include <TPDGCode.h>
+
 #include <algorithm>
 #include <array>
 #include <climits>
@@ -46,24 +49,31 @@
 using namespace o2::aod;
 using namespace o2::framework;
 using namespace o2::framework::expressions;
+using namespace o2::constants;
 using namespace o2::hf_evsel;
 using namespace o2::hf_centrality;
 using CollisionEvSels = o2::soa::Join<o2::aod::Collisions, o2::aod::EvSels>;
 using BcEvSelIt = o2::soa::Join<o2::aod::BCs, o2::aod::BcSels>::iterator;
 using SelectedClusters = o2::soa::Filtered<o2::soa::Join<o2::aod::EMCALClusters, o2::aod::EMCALMCClusters>>;
 
+namespace poi
+{
 enum PoI {
   kPhoton = 0,
-  kElectron = 1,
-  kHadron = 2,
-  kNPoI = 3
+  kElectronPrim = 1,
+  kElectronSec = 2,
+  kMuon = 3,
+  kHadronCharge = 4,
+  kHadronNeutral = 5,
+  kNPoI = 6
 };
+} // namespace poi
 
 /// \struct TaskEmcExtensiveMcQa
 struct TaskEmcExtensiveMcQa {
 
   static constexpr int NSM = 20; // there 20 supermodlues for the EMCal
-  std::array<int, 2> arrPoIPDG = {22, 11};
+  std::array<int, 6> arrPDGHadronNeutral = {kNeutron, kK0Short, kK0Long, kLambda0, physics::kXi0, kSigma0};
 
   SliceCache cache;
   Preslice<SelectedClusters> psClusterPerCollision = o2::aod::emcalcluster::collisionId;
@@ -88,10 +98,13 @@ struct TaskEmcExtensiveMcQa {
   ConfigurableAxis nClustersBinning{"nClustersBinning", {201, -0.5, 200.5}, "binning for the number of clusters"};
 
   ConfigurableAxis clusterEnergy{"clusterEnergy", {100, 0., 10}, "binning for the cluster energy in GeV"};
-  ConfigurableAxis clusterTimeBinning{"clusterTimeBinning", {1500, -600, 900}, "binning for the cluster time in ns"};
+  ConfigurableAxis clusterTimeBinning{"clusterTimeBinning", {100, -50, 50}, "binning for the cluster time in ns"};
   ConfigurableAxis clusterM02{"clusterM02", {100, 0., 2.0}, "binning for the cluster M02"};
   ConfigurableAxis clusterNCellBinning{"clusterNCellBinning", {100, 0.5, 100.5}, "binning for the number of cells per cluster"};
   ConfigurableAxis clusterOriginRadius{"clusterOriginRadius", {225, 0., 450}, "binning for the radial original point of the main contributor of a cluster"};
+  ConfigurableAxis clusterNContributor{"clusterNContributor", {20, 0.5, 20.5}, "binning for the number of contributor of a cluster"};
+  ConfigurableAxis clusterEnergyRatio{"clusterEnergyRatio", {100, 0., 10.}, "binning for ratio of the deposited energy of the leading particle to its generated momentum cluster"};
+  ConfigurableAxis collisionCent{"collisionCent", {10, 0., 100.}, "binning for the event centrality"};
 
   std::vector<float> mCellTime;
 
@@ -103,20 +116,26 @@ struct TaskEmcExtensiveMcQa {
 
     // create common axes
     const AxisSpec numberClustersAxis{nClustersBinning, "#it{N}_{cl}/ #it{N}_{event}"};
-    const AxisSpec axisParticle = {PoI::kNPoI, -0.5f, +PoI::kNPoI - 0.5f, ""};
+    const AxisSpec axisParticle = {poi::kNPoI, -0.5f, +poi::kNPoI - 0.5f, ""};
     const AxisSpec axisEnergy{clusterEnergy, "#it{E}_{cl} (GeV)"};
     const AxisSpec axisTime{clusterTimeBinning, "#it{t}_{cl} (ns)"};
     const AxisSpec axisM02{clusterM02, "#it{M}_{02}"};
     const AxisSpec axisNCell{clusterNCellBinning, "#it{N}_{cells}"};
     const AxisSpec axisRadius{clusterOriginRadius, "#it{R}_{origin} (cm)"};
+    const AxisSpec axisNContributor{clusterNContributor, "#it{N}_{particles}"};
+    const AxisSpec axisCent{collisionCent, "cent (%)"};
+    const AxisSpec axisLeadingEnergy{clusterEnergy, "#it{E}_{lead} (GeV)"};
+    const AxisSpec axisLeadingGenMomentum{clusterEnergy, "#it{p}_{lead, gen} (GeV/#it{c})"};
+    const AxisSpec axisLeadingRatio{clusterEnergy, "#it{E}_{lead}/#it{p}_{lead, gen} (#it{c})"};
 
     // create histograms
 
     // event properties
     mHistManager.add("numberOfClustersEvents", "number of clusters per event (selected events)", HistType::kTH1D, {numberClustersAxis});
 
     // cluster properties (matched clusters)
-    mHistManager.add("hSparseClusterQA", "THn for Cluster QA", HistType::kTHnSparseF, {axisEnergy, axisTime, axisM02, axisNCell, axisRadius, axisParticle});
+    mHistManager.add("hSparseClusterQA", "THnSparse for Cluster QA", HistType::kTHnSparseF, {axisEnergy, axisTime, axisM02, axisNCell, axisRadius, axisParticle, axisNContributor, axisCent});
+    mHistManager.add("hSparseClusterContributors", "THnSparse with cluster contributors and energies", HistType::kTHnSparseF, {axisEnergy, axisParticle, axisNContributor, axisLeadingEnergy, axisLeadingGenMomentum, axisLeadingRatio, axisCent});
     mHistManager.add("clusterEtaPhi", "Eta and phi of cluster", HistType::kTH2F, {{140, -0.7, 0.7}, {360, 0, o2::constants::math::TwoPI}});
 
     hfEvSel.addHistograms(mHistManager);
@@ -127,9 +146,8 @@ struct TaskEmcExtensiveMcQa {
   }
 
   template <typename Coll>
-  bool isCollSelected(const Coll& coll)
+  bool isCollSelected(const Coll& coll, float& cent)
   {
-    float cent{-1.f};
     const auto rejectionMask = hfEvSel.getHfCollisionRejectionMask<true, o2::hf_centrality::CentralityEstimator::None, aod::BCsWithTimestamps>(coll, cent, ccdb, mHistManager);
     /// monitor the satisfied event selections
     hfEvSel.fillHistograms(coll, rejectionMask, cent);
@@ -143,12 +161,28 @@ struct TaskEmcExtensiveMcQa {
   template <typename T>
   int findPoIType(T const& mcparticle)
   {
-    auto it = std::find(arrPoIPDG.begin(), arrPoIPDG.end(), std::abs(mcparticle.pdgCode()));
-    if (it != arrPoIPDG.end()) {
-      int index = std::distance(arrPoIPDG.begin(), it);
-      return index;
-    } else {
-      return PoI::kHadron;
+    auto pdgValue = std::abs(mcparticle.pdgCode());
+    switch (pdgValue) {
+      case kGamma: {
+        return poi::kPhoton;
+      }
+      case kElectron: {
+        if (mcparticle.isPhysicalPrimary()) {
+          return poi::kElectronPrim;
+        } else {
+          return poi::kElectronSec;
+        }
+      }
+      case kMuonMinus: {
+        return poi::kMuon;
+      }
+      default: {
+        auto it = std::find(arrPDGHadronNeutral.begin(), arrPDGHadronNeutral.end(), pdgValue);
+        if (it != arrPDGHadronNeutral.end()) {
+          return poi::kHadronNeutral;
+        }
+        return poi::kHadronCharge;
+      }
     }
   }
 
@@ -159,7 +193,8 @@ struct TaskEmcExtensiveMcQa {
   {
 
     for (const auto& collision : collisions) {
-      if (applyEvSels && !isCollSelected(collision)) {
+      float cent = -1.f;
+      if (applyEvSels && !isCollSelected(collision, cent)) {
         continue;
       }
 
@@ -175,7 +210,11 @@ struct TaskEmcExtensiveMcQa {
         }
         auto mainMcParticle = cluster.mcParticle_as<McParticles>()[0];
         float radius = std::hypot(mainMcParticle.vx(), mainMcParticle.vy());
-        mHistManager.fill(HIST("hSparseClusterQA"), cluster.energy(), cluster.time(), cluster.m02(), cluster.nCells(), radius, findPoIType(mainMcParticle));
+        float momentum = mainMcParticle.p();
+        float leadingEnergy = cluster.energy() * cluster.amplitudeA()[0];
+        float leadingFraction = leadingEnergy / momentum;
+        mHistManager.fill(HIST("hSparseClusterQA"), cluster.energy(), cluster.time(), cluster.m02(), cluster.nCells(), radius, findPoIType(mainMcParticle), cluster.mcParticle().size(), cent);
+        mHistManager.fill(HIST("hSparseClusterContributors"), cluster.energy(), findPoIType(mainMcParticle), cluster.mcParticle().size(), leadingEnergy, momentum, leadingFraction, cent);
       }
     }
   }