[PWGCF] FemtoUniverse: Add deta-dphi* distributions in kT ranges (#13584)

Co-authored-by: ALICE Action Bot <alibuild@cern.ch>

Author: prchakra

PWGCF/FemtoUniverse/Core/FemtoUniverseDetaDphiStar.h

@@ -187,6 +187,27 @@ class FemtoUniverseDetaDphiStar
     }
   }
 
+  template <typename t1>
+  void init_kT(HistogramRegistry* registry, t1& ktbins)
+  {
+    mHistogramRegistry = registry;
+    ktBins = ktbins;
+
+    if constexpr (kPartOneType == o2::aod::femtouniverseparticle::ParticleType::kTrack && kPartTwoType == o2::aod::femtouniverseparticle::ParticleType::kTrack) {
+      std::string dirName = static_cast<std::string>(DirNames[0]);
+      for (int j = 0; j < static_cast<int>(ktBins.size() - 1); j++) {
+        std::string histSuffixkT1 = std::to_string(static_cast<int>(ktBins[j] * 100.0));
+        std::string histSuffixkT2 = std::to_string(static_cast<int>(ktBins[j + 1] * 100.0));
+        std::string histFolderkT = "kT_" + histSuffixkT1 + "_" + histSuffixkT2 + "/";
+
+        histdetadphisamebeforekT[j] = mHistogramRegistry->add<TH2>((dirName + histFolderkT + "detadphidetadphiBeforeSame").c_str(), "; #Delta #eta; #Delta #phi", kTH2F, {{100, -0.15, 0.15}, {100, -0.15, 0.15}});
+        histdetadphimixedbeforekT[j] = mHistogramRegistry->add<TH2>((dirName + histFolderkT + "detadphidetadphiBeforeMixed").c_str(), "; #Delta #eta; #Delta #phi", kTH2F, {{100, -0.15, 0.15}, {100, -0.15, 0.15}});
+        histdetadphisameafterkT[j] = mHistogramRegistry->add<TH2>((dirName + histFolderkT + "detadphidetadphiAfterSame").c_str(), "; #Delta #eta; #Delta #phi", kTH2F, {{100, -0.15, 0.15}, {100, -0.15, 0.15}});
+        histdetadphimixedafterkT[j] = mHistogramRegistry->add<TH2>((dirName + histFolderkT + "detadphidetadphiAfterMixed").c_str(), "; #Delta #eta; #Delta #phi", kTH2F, {{100, -0.15, 0.15}, {100, -0.15, 0.15}});
+      }
+    }
+  }
+
   ///  Check if pair is close or not
   template <typename Part, typename Parts>
   bool isClosePair(Part const& part1, Part const& part2, Parts const& particles, float lmagfield, uint8_t ChosenEventType)
@@ -620,6 +641,62 @@ class FemtoUniverseDetaDphiStar
     }
   }
 
+  /// Templated function to access different kT directory and call addEventPair
+  /// \param part1 particle 1
+  /// \param part2 particle 2
+  /// \param ChosenEventType Same or Mixed evet type
+  /// \param maxl Maximum valie of L component of the spherical harmonics
+  /// \param multval Multiplicity value
+  /// \param ktval kT value
+  template <typename Part>
+  void kTdetadphi(Part const& part1, Part const& part2, uint8_t ChosenEventType, float ktval)
+  {
+    int ktbinval = -1;
+    if (ktval >= ktBins[0] && ktval < ktBins[1]) {
+      ktbinval = 0;
+    } else if (ktval >= ktBins[1] && ktval < ktBins[2]) {
+      ktbinval = 1;
+    } else if (ktval >= ktBins[2] && ktval < ktBins[3]) {
+      ktbinval = 2;
+    } else if (ktval >= ktBins[3] && ktval < ktBins[4]) {
+      ktbinval = 3;
+    } else {
+      return;
+    }
+    isClosePairkT(part1, part2, ChosenEventType, ktbinval);
+  }
+
+  ///  Check if pair is close or not
+  template <typename Part>
+  void isClosePairkT(Part const& part1, Part const& part2, uint8_t ChosenEventType, int ktbinval)
+  {
+    /// Track-Track combination
+    // check if provided particles are in agreement with the class instantiation
+    if (part1.partType() != o2::aod::femtouniverseparticle::ParticleType::kTrack || part2.partType() != o2::aod::femtouniverseparticle::ParticleType::kTrack) {
+      LOG(fatal) << "FemtoUniverseDetaDphiStar: passed arguments don't agree with FemtoUniverseDetaDphiStar instantiation! Please provide kTrack,kTrack candidates.";
+      return;
+    }
+    auto deta = part1.eta() - part2.eta();
+    auto dphiAvg = averagePhiStar(part1, part2, 0);
+    if (ChosenEventType == femto_universe_container::EventType::same) {
+      histdetadphisamebeforekT[ktbinval]->Fill(deta, dphiAvg);
+    } else if (ChosenEventType == femto_universe_container::EventType::mixed) {
+      histdetadphimixedbeforekT[ktbinval]->Fill(deta, dphiAvg);
+    } else {
+      LOG(fatal) << "FemtoUniverseDetaDphiStar: passed arguments don't agree with FemtoUniverseDetaDphiStar's type of events! Please provide same or mixed.";
+    }
+
+    if (std::pow(dphiAvg, 2) / std::pow(cutDeltaPhiStarMax, 2) + std::pow(deta, 2) / std::pow(cutDeltaEtaMax, 2) > 1.) {
+      if (ChosenEventType == femto_universe_container::EventType::same) {
+        histdetadphisameafterkT[ktbinval]->Fill(deta, dphiAvg);
+      } else if (ChosenEventType == femto_universe_container::EventType::mixed) {
+        histdetadphimixedafterkT[ktbinval]->Fill(deta, dphiAvg);
+      } else {
+        LOG(fatal) << "FemtoUniverseDetaDphiStar: passed arguments don't agree with FemtoUniverseDetaDphiStar's type of events! Please provide same or mixed.";
+      }
+    }
+  }
+
   ///  Check if pair is close or not
   template <typename Part>
   void ClosePairqLCMS(Part const& part1, Part const& part2, float lmagfield, uint8_t ChosenEventType, double qlcms) // add typename Parts and variable parts for adding MClabels
@@ -698,9 +775,15 @@ class FemtoUniverseDetaDphiStar
   float cutPhiInvMassLow;
   float cutPhiInvMassHigh;
   bool isSameSignCPR = false;
+  std::vector<double> ktBins;
 
   std::array<std::array<std::shared_ptr<TH2>, 2>, 7> histdetadpisame{};
   std::array<std::array<std::shared_ptr<TH2>, 2>, 7> histdetadpimixed{};
+  std::array<std::shared_ptr<TH2>, 4> histdetadphisamebeforekT{};
+  std::array<std::shared_ptr<TH2>, 4> histdetadphimixedbeforekT{};
+  std::array<std::shared_ptr<TH2>, 4> histdetadphisameafterkT{};
+  std::array<std::shared_ptr<TH2>, 4> histdetadphimixedafterkT{};
+
   std::array<std::array<std::shared_ptr<TH2>, 9>, 7> histdetadpiRadii{};
 
   std::shared_ptr<TH3> histdetadpiqlcmssame{};

PWGCF/FemtoUniverse/Tasks/femtoUniversePairTaskTrackTrackSpherHarMultKtExtended.cxx

@@ -454,6 +454,7 @@ struct femtoUniversePairTaskTrackTrackSpherHarMultKtExtended {
     pairCleaner.init(&qaRegistry);
     if (twotracksconfigs.ConfIsCPR.value) {
       pairCloseRejection.init(&resultRegistry, &qaRegistry, twotracksconfigs.ConfCPRdeltaPhiCutMin.value, twotracksconfigs.ConfCPRdeltaPhiCutMax.value, twotracksconfigs.ConfCPRdeltaEtaCutMin.value, twotracksconfigs.ConfCPRdeltaEtaCutMax.value, twotracksconfigs.ConfCPRChosenRadii.value, twotracksconfigs.ConfCPRPlotPerRadii.value);
+      pairCloseRejection.init_kT(&resultRegistry, ConfKtKstarBins);
     }
 
     vPIDPartOne = trackonefilter.ConfPIDPartOne.value;
@@ -549,7 +550,9 @@ struct femtoUniversePairTaskTrackTrackSpherHarMultKtExtended {
           continue;
         }
 
+        float kT = FemtoUniverseMath::getkT(p1, mass1, p2, mass2);
         if (twotracksconfigs.ConfIsCPR.value) {
+          pairCloseRejection.kTdetadphi(p1, p2, femto_universe_container::EventType::same, kT);
           if (confCPRIsAtITS.value) {
             if (pairCloseRejection.isClosePairAtITS(p1, p2, magFieldTesla, femto_universe_container::EventType::same)) {
               continue;
@@ -566,7 +569,6 @@ struct femtoUniversePairTaskTrackTrackSpherHarMultKtExtended {
           continue;
         }
 
-        float kT = FemtoUniverseMath::getkT(p1, mass1, p2, mass2);
         double rand;
         rand = randgen->Rndm();
 
@@ -919,7 +921,9 @@ struct femtoUniversePairTaskTrackTrackSpherHarMultKtExtended {
         continue;
       }
 
+      float kT = FemtoUniverseMath::getkT(p1, mass1, p2, mass2);
       if (twotracksconfigs.ConfIsCPR.value) {
+        pairCloseRejection.kTdetadphi(p1, p2, femto_universe_container::EventType::mixed, kT);
         if (confCPRIsAtITS.value) {
           if (pairCloseRejection.isClosePairAtITS(p1, p2, magFieldTesla, femto_universe_container::EventType::mixed)) {
             continue;
@@ -931,7 +935,6 @@ struct femtoUniversePairTaskTrackTrackSpherHarMultKtExtended {
         }
       }
 
-      float kT = FemtoUniverseMath::getkT(p1, mass1, p2, mass2);
       double rand;
       rand = randgen->Rndm();