AliAnalysisTaskEmcalJetHMEC.cxx

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//Measure Jet-hadron correlations
//Does event Mixing using AliEventPoolManager

#include "AliAnalysisTaskEmcalJetHCorrelations.h"

#include <bitset>

#include <TH1F.h>
#include <TH2F.h>
#include <TH3F.h>
#include <THnSparse.h>
#include <TVector3.h>
#include <TFile.h>
#include <TGrid.h>
#include <TRandom3.h>

#include <AliAnalysisManager.h>
#include <AliInputEventHandler.h>
#include <AliEventPoolManager.h>
#include <AliLog.h>
#include <AliVAODHeader.h>
#include <AliVTrack.h>

#include "AliEmcalJet.h"
#include "AliTLorentzVector.h"
#include "AliBasicParticle.h"
#include "AliEmcalContainerUtils.h"
#include "AliClusterContainer.h"
#include "AliTrackContainer.h"
#include "AliJetContainer.h"
#include "AliAnalysisTaskEmcalEmbeddingHelper.h"
#include "AliAnalysisTaskEmcalJetHUtils.h"

ClassImp(PWGJE::EMCALJetTasks::AliAnalysisTaskEmcalJetHCorrelations);

namespace PWGJE {
namespace EMCALJetTasks {

// 0-10% centrality: Semi-Good Runs
Double_t AliAnalysisTaskEmcalJetHCorrelations::p0_10SG[17] = {0.906767, 0.0754127, 1.11638, -0.0233078, 0.795454, 0.00935385, -0.000327857, 1.08903, 0.0107272, 0.443252, -0.143411, 0.965822, 0.359156, -0.581221, 1.0739, 0.00632828, 0.706356};
// 10-30% centrality: Semi-Good Runs
Double_t AliAnalysisTaskEmcalJetHCorrelations::p10_30SG[17] = {0.908011, 0.0769254, 1.11912, -0.0249449, 0.741488, 0.0361252, -0.00367954, 1.10424, 0.011472, 0.452059, -0.133282, 0.980633, 0.358222, -0.620256, 1.06871, 0.00564449, 0.753168};
// 30-50% centrality: Semi-Good Runs
Double_t AliAnalysisTaskEmcalJetHCorrelations::p30_50SG[17] = {0.958708, 0.0799197, 1.10817, -0.0357678, 0.75051, 0.0607808, -0.00929713, 0.998801, 0.00692244, 0.615452, -0.0480328, 0.968431, 0.321634, -0.619066, 1.03412, 0.00656201, 0.798666};
// 50-90% centrality: Semi-Good Runs
Double_t AliAnalysisTaskEmcalJetHCorrelations::p50_90SG[17] = {0.944565, 0.0807258, 1.12709, -0.0324746, 0.666452, 0.0842476, -0.00963837, 1.02829, 0.00666852, 0.549625, -0.0603107, 0.981374, 0.309374, -0.619181, 1.05367, 0.005925, 0.744887};

// 0-10% centrality: Good Runs
Double_t AliAnalysisTaskEmcalJetHCorrelations::p0_10G[17] = {0.971679, 0.0767571, 1.13355, -0.0274484, 0.856652, 0.00536795, 3.90795e-05, 1.06889, 0.011007, 0.447046, -0.146626, 0.919777, 0.192601, -0.268515, 1.00243, 0.00620849, 0.709477};
// 10-30% centrality: Good Runs
Double_t AliAnalysisTaskEmcalJetHCorrelations::p10_30G[17] = {0.97929, 0.0776039, 1.12213, -0.0300645, 0.844722, 0.0134788, -0.0012333, 1.07955, 0.0116835, 0.456608, -0.132743, 0.930964, 0.174175, -0.267154, 0.993118, 0.00574892, 0.765256};
// 30-50% centrality: Good Runs
Double_t AliAnalysisTaskEmcalJetHCorrelations::p30_50G[17] = {0.997696, 0.0816769, 1.14341, -0.0353734, 0.752151, 0.0744259, -0.0102926, 1.01561, 0.00713274, 0.57203, -0.0640248, 0.947747, 0.102007, -0.194698, 0.999164, 0.00568476, 0.7237};
// 50-90% centrality: Good Runs
Double_t AliAnalysisTaskEmcalJetHCorrelations::p50_90G[17] = {0.97041, 0.0813559, 1.12151, -0.0368797, 0.709327, 0.0701501, -0.00784043, 1.06276, 0.00676173, 0.53607, -0.0703117, 0.982534, 0.0947881, -0.18073, 1.03229, 0.00580109, 0.737801};

AliAnalysisTaskEmcalJetHCorrelations::AliAnalysisTaskEmcalJetHCorrelations() :
  AliAnalysisTaskEmcalJet("AliAnalysisTaskEmcalJetHCorrelations", kFALSE),
  fTrackBias(5),
  fClusterBias(5),
  fDoEventMixing(kFALSE),
  fNMixingTracks(50000), fMinNTracksMixedEvents(5000), fMinNEventsMixedEvents(5), fNCentBinsMixedEvent(10),
  fPoolMgr(nullptr),
  fTriggerType(AliVEvent::kEMCEJE), fMixingEventType(AliVEvent::kMB | AliVEvent::kCentral | AliVEvent::kSemiCentral),
  fDisableFastPartition(kFALSE),
  fSingleTrackEfficiencyCorrectionType(AliAnalysisTaskEmcalJetHCorrelations::kEffDisable),
  fArtificialTrackInefficiency(1.0),
  fNoMixedEventJESCorrection(kFALSE),
  fJESCorrectionHist(nullptr),
  fDoLessSparseAxes(kFALSE), fDoWiderTrackBin(kFALSE),
  fRequireMatchedJetWhenEmbedding(kTRUE),
  fMinSharedMomentumFraction(0.),
  fRequireMatchedPartLevelJet(false),
  fMaxMatchedJetDistance(-1),
  fHistManager(),
  fHistTrackPt(nullptr),
  fHistJetEtaPhi(nullptr),
  fHistJetHEtaPhi(nullptr),
  fhnMixedEvents(nullptr),
  fhnJH(nullptr),
  fhnTrigger(nullptr)
{
  // Default Constructor
  InitializeArraysToZero();
}

AliAnalysisTaskEmcalJetHCorrelations::AliAnalysisTaskEmcalJetHCorrelations(const char *name) :
  AliAnalysisTaskEmcalJet(name, kTRUE),
  fTrackBias(5),
  fClusterBias(5),
  fDoEventMixing(kFALSE),
  fNMixingTracks(50000), fMinNTracksMixedEvents(5000), fMinNEventsMixedEvents(5), fNCentBinsMixedEvent(10),
  fPoolMgr(nullptr),
  fTriggerType(AliVEvent::kEMCEJE), fMixingEventType(AliVEvent::kMB | AliVEvent::kCentral | AliVEvent::kSemiCentral),
  fDisableFastPartition(kFALSE),
  fSingleTrackEfficiencyCorrectionType(AliAnalysisTaskEmcalJetHCorrelations::kEffDisable),
  fArtificialTrackInefficiency(1.0),
  fNoMixedEventJESCorrection(kFALSE),
  fJESCorrectionHist(nullptr),
  fDoLessSparseAxes(kFALSE), fDoWiderTrackBin(kFALSE),
  fRequireMatchedJetWhenEmbedding(kTRUE),
  fMinSharedMomentumFraction(0.),
  fRequireMatchedPartLevelJet(false),
  fMaxMatchedJetDistance(-1),
  fHistManager(name),
  fHistTrackPt(nullptr),
  fHistJetEtaPhi(nullptr),
  fHistJetHEtaPhi(nullptr),
  fhnMixedEvents(nullptr),
  fhnJH(nullptr),
  fhnTrigger(nullptr)
{
  // Constructor
  InitializeArraysToZero();
  // Ensure that additional general histograms are created
  SetMakeGeneralHistograms(kTRUE);
}

void AliAnalysisTaskEmcalJetHCorrelations::InitializeArraysToZero()
{
  for(Int_t trackPtBin = 0; trackPtBin < kMaxTrackPtBins; trackPtBin++){
    fHistTrackEtaPhi[trackPtBin] = nullptr;
  }
  for(Int_t centralityBin = 0; centralityBin < kMaxCentralityBins; ++centralityBin){
    fHistJetPt[centralityBin] = nullptr;
    fHistJetPtBias[centralityBin] = nullptr;
  }
}

void AliAnalysisTaskEmcalJetHCorrelations::UserCreateOutputObjects() {
  // Called once 
  AliAnalysisTaskEmcalJet::UserCreateOutputObjects();

  // Create histograms
  fHistTrackPt = new TH1F("fHistTrackPt", "P_{T} distribution", 1000, 0.0, 100.0);
  fHistJetEtaPhi = new TH2F("fHistJetEtaPhi","Jet eta-phi",900,-1.8,1.8,720,-3.2,3.2);
  fHistJetHEtaPhi = new TH2F("fHistJetHEtaPhi","Jet-Hadron deta-dphi",900,-1.8,1.8,720,-1.6,4.8);

  fOutput->Add(fHistTrackPt);
  fOutput->Add(fHistJetEtaPhi);
  fOutput->Add(fHistJetHEtaPhi);

  TString name;
  for(Int_t trackPtBin = 0; trackPtBin < kMaxTrackPtBins; ++trackPtBin){
    name = Form("fHistTrackEtaPhi_%i", trackPtBin);
    fHistTrackEtaPhi[trackPtBin] = new TH2F(name,name,400,-1,1,720,0.0,2.0*TMath::Pi());
    fOutput->Add(fHistTrackEtaPhi[trackPtBin]);
  }

  for(Int_t centralityBin = 0; centralityBin < kMaxCentralityBins; ++centralityBin){
    name = Form("fHistJetPt_%i",centralityBin);
    fHistJetPt[centralityBin] = new TH1F(name,name,200,0,200);
    fOutput->Add(fHistJetPt[centralityBin]);

    name = Form("fHistJetPtBias_%i",centralityBin);
    fHistJetPtBias[centralityBin] = new TH1F(name,name,200,0,200);
    fOutput->Add(fHistJetPtBias[centralityBin]);
  }

  // Jet matching cuts
  std::vector<std::string> binLabels = {"noMatch", "matchedJet", "sharedMomentumFraction", "partLevelMatchedJet", "jetDistance", "passedAllCuts"};
  for (auto histName : std::vector<std::string>({"SameEvent", "MixedEvent"})) {
    name = std::string("fHistJetMatching") + histName.c_str() + "Cuts";
    std::string title = std::string("Jets which passed matching jet cuts for ") + histName;
    auto histMatchedJetCuts = fHistManager.CreateTH1(name, title.c_str(), binLabels.size(), 0, binLabels.size());
    // Set label names
    for (unsigned int i = 1; i <= binLabels.size(); i++) {
      histMatchedJetCuts->GetXaxis()->SetBinLabel(i, binLabels.at(i-1).c_str());
    }
    histMatchedJetCuts->GetYaxis()->SetTitle("Number of jets");
  }

  UInt_t cifras = 0; // bit coded, see GetDimParams() below 
  if(fDoLessSparseAxes) {
    cifras = 1<<0 | 1<<1 | 1<<2 | 1<<3 | 1<<4 | 1<<5 | 1<<9;
  } else {
    cifras = 1<<0 | 1<<1 | 1<<2 | 1<<3 | 1<<4 | 1<<5 | 1<<7 | 1<<9;
  }
  fhnJH = NewTHnSparseF("fhnJH", cifras);
  fhnJH->Sumw2();
  fOutput->Add(fhnJH);

  if(fDoEventMixing){    
    // The event plane angle does not need to be included because the semi-central determined that the EP angle didn't change
    // significantly for any of the EP orientations. However, it will be included so this can be demonstrated for the central
    // analysis if so desired.
    if(fDoLessSparseAxes) { 
      cifras = 1<<0 | 1<<1 | 1<<2 | 1<<3 | 1<<4 | 1<<5 | 1<<9;
    } else {
      cifras = 1<<0 | 1<<1 | 1<<2 | 1<<3 | 1<<4 | 1<<5 | 1<<7 | 1<<9;
    }
    fhnMixedEvents = NewTHnSparseF("fhnMixedEvents", cifras);
    fhnMixedEvents->Sumw2();
    fOutput->Add(fhnMixedEvents);
  }

  // Trigger THnSparse
  cifras = 1<<0 | 1<<1 | 1<<9;
  fhnTrigger = NewTHnSparseF("fhnTrigger", cifras);
  fhnTrigger->Sumw2();
  fOutput->Add(fhnTrigger);

  // Store hist manager output in the output list
  TIter next(fHistManager.GetListOfHistograms());
  TObject* obj = 0;
  while ((obj = next())) {
    fOutput->Add(obj);
  }
  
  PostData(1, fOutput);

  // Event Mixing
  Int_t poolSize = -1;  // Maximum number of events. Set to -1 to avoid limits on number of events
  // ZVertex
  Int_t nZVertexBins = 10;
  Double_t* zVertexBins = GenerateFixedBinArray(nZVertexBins, -10, 10);
  // Event activity (centrality of multiplicity)
  Int_t nEventActivityBins = 8;
  Double_t* eventActivityBins = 0;
  // +1 to accomodate the fact that we define bins rather than array entries.
  Double_t multiplicityBins[kMixedEventMulitplictyBins+1] = {0., 4., 9., 15., 25., 35., 55., 100., 500.};

  // Cannot use GetBeamType() since it is not available until UserExec()
  if (fForceBeamType != AliAnalysisTaskEmcal::kpp ) {   //all besides pp
    // Event Activity is centrality in AA, pA
    nEventActivityBins = fNCentBinsMixedEvent;
    eventActivityBins = GenerateFixedBinArray(nEventActivityBins, 0, 100);
  }
  else if (fForceBeamType == AliAnalysisTaskEmcal::kpp) { //for pp only
    // Event Activity is multiplicity in pp
    eventActivityBins = multiplicityBins;
  }

  fPoolMgr = new AliEventPoolManager(poolSize, fNMixingTracks, nEventActivityBins, eventActivityBins, nZVertexBins, zVertexBins);
}

void AliAnalysisTaskEmcalJetHCorrelations::ExecOnce()
{
  if (fArtificialTrackInefficiency < 1.) {
    if (gRandom) delete gRandom;
    gRandom = new TRandom3(0);
  }

  // Call the base class
  AliAnalysisTaskEmcalJet::ExecOnce();
}

Int_t AliAnalysisTaskEmcalJetHCorrelations::GetTrackPtBin(Double_t pt) const
{
  Int_t ptBin = -1;
  if      (pt <  0.5) ptBin = 0;
  else if (pt <  1  ) ptBin = 1;
  else if (pt <  2  ) ptBin = 2;
  else if (pt <  3  ) ptBin = 3;
  else if (pt <  5  ) ptBin = 4;
  else if (pt <  8  ) ptBin = 5;
  else if (pt < 20  ) ptBin = 6;

  return ptBin;
}

UInt_t AliAnalysisTaskEmcalJetHCorrelations::RetrieveTriggerMask() const
{
  UInt_t eventTrigger = 0;
  if (fIsEmbedded) {
    auto embeddingHelper = AliAnalysisTaskEmcalEmbeddingHelper::GetInstance();
    if (embeddingHelper) {
      auto aodHeader = dynamic_cast<AliVAODHeader *>(embeddingHelper->GetEventHeader());
      if (aodHeader) {
        AliDebugStream(5) << "Retrieving trigger mask from embedded event\n";
        eventTrigger = aodHeader->GetOfflineTrigger();
      }
      else {
        AliErrorStream() << "Failed to retrieve requested AOD header from embedding helper\n";
      }
    }
    else {
      AliErrorStream() << "Failed to retrieve requested embedding helper\n";
    }
  }
  else {
    AliDebugStream(5) << "Retrieving trigger mask from internal event\n";
    eventTrigger = ((AliInputEventHandler*)(AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler()))->IsEventSelected();
  }

  return eventTrigger;
}

Bool_t AliAnalysisTaskEmcalJetHCorrelations::Run()
{
  // NOTE: Clusters are never used directly in the task, so the container is neither created not retrieved
  // Retrieve tracks
  AliTrackContainer * tracks = static_cast<AliTrackContainer * >(GetParticleContainer("tracksForCorrelations"));
  if (!tracks) {
    AliError(Form("%s: Unable to retrieve tracks!", GetName()));
    return kFALSE;
  }

  // Retrieve jets
  AliJetContainer * jets = GetJetContainer(0);
  if (!jets) {
    AliError(Form("%s: Unable to retrieve jets!", GetName()));
    return kFALSE;
  }

  // Keep track of the tracks which are rejected with an aritificial track inefficiency
  std::vector<unsigned int> rejectedTrackIndices;
  bool useListOfRejectedIndices = false;

  // Get z vertex
  Double_t zVertex=fVertex[2];
  // Flags
  Bool_t biasedJet = kFALSE;
  Bool_t leadJet = kFALSE;
  // Relative angles and distances
  Double_t deltaPhi = 0;
  Double_t deltaEta = 0;
  Double_t deltaR = 0;
  Double_t epAngle = 0;
  // Event activity (centrality or multipilicity)
  Double_t eventActivity = 0;
  // Efficiency correction
  Double_t efficiency = -999;
  // For comparison to the current jet
  AliEmcalJet * leadingJet = jets->GetLeadingJet();
  // For getting the proper properties of tracks
  AliTLorentzVector track;

  // Determine the trigger for the current event
  UInt_t eventTrigger = RetrieveTriggerMask();

  AliDebugStream(5) << "Beginning main processing. Number of jets: " << jets->GetNJets() << ", accepted jets: " << jets->GetNAcceptedJets() << "\n";

  // Handle fast partition if selected
  if ((eventTrigger & AliVEvent::kFastOnly) && fDisableFastPartition) {
    AliDebugStream(4) << GetName() << ": Fast partition disabled\n";
    if (fGeneralHistograms) {
      fHistEventRejection->Fill("Fast Partition", 1);
    }
    return kFALSE;
  }

  for (auto jet : jets->accepted()) {
    // Selects only events that we are interested in (ie triggered)
    if (!(eventTrigger & fTriggerType)) {
      // The two bitwise and to zero yet are still equal when both are 0, so we allow for that possibility
      if (eventTrigger == fTriggerType && eventTrigger == 0) {
        AliDebugStream(5) << "Event accepted because the physics selection is \"0\".\n";
      }
      else {
        AliDebugStream(5) << "Rejected jets due to physics selection. Phys sel: " << std::bitset<32>(eventTrigger) << ", requested triggers: " << std::bitset<32>(fTriggerType) << " \n";
        // We can break here - the physics selection is not going to change within an event.
        break;
      }
    }

    AliDebugStream(5) << "Jet passed event selection!\nJet: " << jet->toString().Data() << "\n";

    // Require the found jet to be matched
    // This match should be between detector and particle level MC
    if (fIsEmbedded && fRequireMatchedJetWhenEmbedding) {
      bool foundMatchedJet = CheckForMatchedJet(jets, jet, "fHistJetMatchingSameEventCuts");
      if (foundMatchedJet == false) {
        continue;
      }
    }

    // Determine event activity
    if (fBeamType == kAA || fBeamType == kpA) {
      eventActivity = fCent;
    }
    else if (fBeamType == kpp) {
      eventActivity = static_cast<Double_t>(tracks->GetNTracks());
    }

    // Jet properties
    // Determine if we have the lead jet
    leadJet = kFALSE;
    if (jet == leadingJet) leadJet = kTRUE;
    biasedJet = BiasedJet(jet);
    epAngle = PWGJE::EMCALJetTasks::AliAnalysisTaskEmcalJetHUtils::RelativeEPAngle(jet->Phi(), fEPV0);

    // Fill jet properties
    fHistJetEtaPhi->Fill(jet->Eta(), jet->Phi());
    FillHist(fHistJetPt[fCentBin], jet->Pt());
    if (biasedJet == kTRUE) {
      FillHist(fHistJetPtBias[fCentBin], jet->Pt());

      const double triggerInfo[] = {eventActivity, jet->Pt(), epAngle};
      fhnTrigger->Fill(triggerInfo);
    }

    // Cut on jet pt of 15 to reduce the size of the sparses
    if (jet->Pt() > 15) {

      AliDebugStream(4) << "Passed min jet pt cut of 15. Jet: " << jet->toString().Data() << "\n";
      AliDebugStream(4) << "N accepted tracks: " << tracks->GetNAcceptedTracks() << "\n";
      auto tracksIter = tracks->accepted_momentum();
      for (auto trackIter = tracksIter.begin(); trackIter != tracksIter.end(); trackIter++ ) {
        // Get proper track properties
        track.Clear();
        track = trackIter->first;

        // Artificial inefficiency
        // Note that we already randomly rejected tracks so that the same tracks will be rejected for the mixed events
        bool rejectParticle = CheckArtificialTrackEfficiency(trackIter.current_index(), rejectedTrackIndices, useListOfRejectedIndices);
        if (rejectParticle) {
          AliDebugStream(4) << "Track rejected in signal correlation loop.\n";
          continue;
        }

        // Determine relative angles and distances and set the respective variables
        GetDeltaEtaDeltaPhiDeltaR(track, jet, deltaEta, deltaPhi, deltaR);

        // Fill track properties
        fHistTrackPt->Fill(track.Pt());
        fHistJetHEtaPhi->Fill(deltaEta, deltaPhi);

        // Calculate single particle tracking efficiency for correlations
        efficiency = EffCorrection(track.Eta(), track.Pt());
        AliDebugStream(6) << "track eta: " << track.Eta() << ", track pt: " << track.Pt() << ", efficiency: " << efficiency << "\n";

        if (biasedJet == kTRUE) {
          if(fDoLessSparseAxes) { // check if we want all dimensions
            double triggerEntries[] = {eventActivity, jet->Pt(), track.Pt(), deltaEta, deltaPhi, static_cast<Double_t>(leadJet), epAngle};
            FillHist(fhnJH, triggerEntries, 1.0/efficiency);
          } else { 
            double triggerEntries[] = {eventActivity, jet->Pt(), track.Pt(), deltaEta, deltaPhi, static_cast<Double_t>(leadJet), deltaR, epAngle};
            FillHist(fhnJH, triggerEntries, 1.0/efficiency);
          }
        }

      } //track loop

      // After one jet (and looping over whatever tracks are available in this event), we want to use the list of rejected indices,
      // both for the next possible signal jet in the event and for the mixed events
      AliDebugStream(4) << "Switching to list of rejected track indices. Number of indices: " << rejectedTrackIndices.size() << "\n";
      useListOfRejectedIndices = true;

    }//jet pt cut
  }//jet loop

  //Prepare to do event mixing

  // create a list of reduced objects. This speeds up processing and reduces memory consumption for the event pool
  TObjArray* tracksClone = 0;

  if(fDoEventMixing == kTRUE){

    // event mixing

    // 1. First get an event pool corresponding in mult (cent) and
    //    zvertex to the current event. Once initialized, the pool
    //    should contain nMix (reduced) events. This routine does not
    //    pre-scan the chain. The first several events of every chain
    //    will be skipped until the needed pools are filled to the
    //    specified depth. If the pool categories are not too rare, this
    //    should not be a problem. If they are rare, you could lose
    //    statistics.

    // 2. Collect the whole pool's content of tracks into one TObjArray
    //    (bgTracks), which is effectively a single background super-event.

    // 3. The reduced and bgTracks arrays must both be passed into
    //    FillCorrelations(). Also nMix should be passed in, so a weight
    //    of 1./nMix can be applied.

    AliEventPool *pool = 0;
    if (fBeamType == kAA || fBeamType == kpA) {//everything but pp
      pool = fPoolMgr->GetEventPool(fCent, zVertex);
    }
    else if (fBeamType == kpp) {//pp only
      pool = fPoolMgr->GetEventPool(static_cast<Double_t>(tracks->GetNTracks()), zVertex);
    }

    if (!pool){
      if (fBeamType == kAA || fBeamType == kpA) AliFatal(Form("No pool found for centrality = %f, zVertex = %f", fCent, zVertex));
      else if (fBeamType == kpp) AliFatal(Form("No pool found for ntracks_pp = %d, zVertex = %f", tracks->GetNTracks(), zVertex));
      return kTRUE;
    }

    // The number of events in the pool
    Int_t nMix = pool->GetCurrentNEvents();

    // The two bitwise and to zero yet are still equal when both are 0, so we allow for that possibility
    if((eventTrigger & fTriggerType) || eventTrigger == fTriggerType) {
      // check for a trigger jet
      if (pool->IsReady() || pool->NTracksInPool() >= fMinNTracksMixedEvents || nMix >= fMinNEventsMixedEvents) {

        for (auto jet : jets->accepted()) {
          // Require the found jet to be matched
          // This match should be between detector and particle level MC
          if (fIsEmbedded && fRequireMatchedJetWhenEmbedding) {
            bool foundMatchedJet = CheckForMatchedJet(jets, jet, "fHistJetMatchingMixedEventCuts");
            if (foundMatchedJet == false) {
              continue;
            }
          }

          if (fBeamType == kAA || fBeamType == kpA) { //pA and AA
            eventActivity = fCent;
          }
          else if (fBeamType == kpp) {
            eventActivity = static_cast<Double_t>(tracks->GetNTracks());
          }

          // Jet properties
          // Determine if we have the lead jet
          leadJet = kFALSE;
          if (jet == leadingJet) { leadJet = kTRUE; }
          biasedJet = BiasedJet(jet);
          epAngle = PWGJE::EMCALJetTasks::AliAnalysisTaskEmcalJetHUtils::RelativeEPAngle(jet->Phi(), fEPV0);

          // Make sure event contains a biased jet above our threshold (reduce stats of sparse)
          if (jet->Pt() < 15 || biasedJet == kFALSE) continue;

          // Fill mixed-event histos here
          for (Int_t jMix=0; jMix < nMix; jMix++) {
            TObjArray* bgTracks = pool->GetEvent(jMix);

            for (Int_t ibg=0; ibg < bgTracks->GetEntries(); ibg++){
              AliBasicParticle *bgTrack = static_cast<AliBasicParticle*>(bgTracks->At(ibg));
              if(!bgTrack) {
                AliError(Form("%s:Failed to retrieve tracks from mixed events", GetName()));
              }

              // NOTE: We don't need to apply the artificial track inefficiency here because we already applied
              //       it when will filling into the event pool (in CloneAndReduceTrackList()).

              // Fill into TLorentzVector for use with functions below
              track.Clear();
              track.SetPtEtaPhiE(bgTrack->Pt(), bgTrack->Eta(), bgTrack->Phi(), 0);

              // Calculate single particle tracking efficiency of mixed events for correlations
              efficiency = EffCorrection(track.Eta(), track.Pt());

              // Phi is [-0.5*TMath::Pi(), 3*TMath::Pi()/2.]
              GetDeltaEtaDeltaPhiDeltaR(track, jet, deltaEta, deltaPhi, deltaR);

              if (fDoLessSparseAxes) {  // check if we want all the axis filled
                double triggerEntries[] = {eventActivity, jet->Pt(), track.Pt(), deltaEta, deltaPhi, static_cast<Double_t>(leadJet), epAngle};
                FillHist(fhnMixedEvents, triggerEntries, 1./(nMix*efficiency), fNoMixedEventJESCorrection);
              } else {
                double triggerEntries[] = {eventActivity, jet->Pt(), track.Pt(), deltaEta, deltaPhi, static_cast<Double_t>(leadJet), deltaR, epAngle};
                FillHist(fhnMixedEvents, triggerEntries, 1./(nMix*efficiency), fNoMixedEventJESCorrection);
              }
            }
          }
        }
      }
    }

    // The two bitwise and to zero yet are still equal when both are 0, so we allow for that possibility
    if ((eventTrigger & fMixingEventType) || eventTrigger == fMixingEventType) {
      tracksClone = CloneAndReduceTrackList(rejectedTrackIndices, useListOfRejectedIndices);

      //update pool if jet in event or not
      pool->UpdatePool(tracksClone);
    }

  } // end of event mixing

  return kTRUE;
}      

Bool_t AliAnalysisTaskEmcalJetHCorrelations::BiasedJet(AliEmcalJet * jet)
{
  if ((jet->MaxTrackPt() > fTrackBias) || (jet->MaxClusterPt() > fClusterBias))
  {
    return kTRUE;
  }
  return kFALSE;
}

void AliAnalysisTaskEmcalJetHCorrelations::GetDeltaEtaDeltaPhiDeltaR(AliTLorentzVector & particleOne, AliVParticle * particleTwo, Double_t & deltaEta, Double_t & deltaPhi, Double_t & deltaR)
{
  // Define dPhi = jet.Phi() - particle.Phi() and similarly for dEta
  // Returns deltaPhi in symmetric range so that we can calculate DeltaR.
  deltaPhi = DeltaPhi(particleOne.Phi(), particleTwo->Phi(), -1.0*TMath::Pi(), TMath::Pi());
  deltaEta = particleTwo->Eta() - particleOne.Eta();
  deltaR = TMath::Sqrt(deltaPhi*deltaPhi + deltaEta*deltaEta);

  // Adjust to the normal range after the DeltaR caluclation
  deltaPhi = DeltaPhi(particleTwo->Phi(), particleOne.Phi(), -0.5*TMath::Pi(), 3*TMath::Pi()/2.);
}

bool AliAnalysisTaskEmcalJetHCorrelations::CheckArtificialTrackEfficiency(unsigned int trackIndex, std::vector<unsigned int> & rejectedTrackIndices, bool useRejectedList)
{
  bool returnValue = false;
  if (fArtificialTrackInefficiency < 1.) {
    if (useRejectedList) {
      if (std::find(rejectedTrackIndices.begin(), rejectedTrackIndices.end(), trackIndex) != rejectedTrackIndices.end()) {
        AliDebugStream(4) << "Track " << trackIndex << " rejected due to artificial tracking inefficiency (from list)\n";
        returnValue = true;
      }
    }
    else {
      // Rejet randomly
      Double_t rnd = gRandom->Rndm();
      if (fArtificialTrackInefficiency < rnd) {
        // Store index so we can reject it again if it is also filled for mixed events
        rejectedTrackIndices.push_back(trackIndex);
        AliDebugStream(4) << "Track " << trackIndex << " rejected due to artificial tracking inefficiency (from random)\n";
        returnValue = true;
      }
    }
  }

  return returnValue;
}

bool AliAnalysisTaskEmcalJetHCorrelations::CheckForMatchedJet(AliJetContainer * jets, AliEmcalJet * jet, const std::string & histName)
{
  bool returnValue = false;
  if (jet->ClosestJet()) {
    fHistManager.FillTH1(histName.c_str(), "matchedJet");
    returnValue = true;
    // TODO: Can it be merged with the function in JetHPerformance?
    AliDebugStream(4) << "Jet is matched!\nJet: " << jet->toString() << "\n";
    // Check shared momentum fraction
    // We explicitly want to use indices instead of geometric matching
    double sharedFraction = jets->GetFractionSharedPt(jet, nullptr);
    if (sharedFraction < fMinSharedMomentumFraction) {
      AliDebugStream(4) << "Jet rejected due to shared momentum fraction of " << sharedFraction << ", which is smaller than the min momentum fraction of " << fMinSharedMomentumFraction << "\n";
      returnValue = false;
    }
    else {
      AliDebugStream(4) << "Passed shared momentum fraction with value of " << sharedFraction << "\n";
      fHistManager.FillTH1(histName.c_str(), "sharedMomentumFraction");
    }

    if (fRequireMatchedPartLevelJet) {
      AliEmcalJet * detLevelJet = jet->ClosestJet();
      AliEmcalJet * partLevelJet = detLevelJet->ClosestJet();
      if (!partLevelJet) {
        AliDebugStream(4) << "Jet rejected due to no matching part level jet.\n";
        returnValue = false;
      }
      else {
        AliDebugStream(4) << "Det level jet has a required match to a part level jet.\n" << "Part level jet: " << partLevelJet->toString() << "\n";
        fHistManager.FillTH1(histName.c_str(), "partLevelMatchedJet");
      }
    }

    // Only check matched jet distance if a value has been set
    if (fMaxMatchedJetDistance > 0) {
      double matchedJetDistance = jet->ClosestJetDistance();
      if (matchedJetDistance > fMaxMatchedJetDistance) {
        AliDebugStream(4) << "Jet rejected due to matching distance of " << matchedJetDistance << ", which is larger than the max distance of " << fMaxMatchedJetDistance << "\n";
        returnValue = false;
      }
      else {
        AliDebugStream(4) << "Jet passed distance cut with distance of " << matchedJetDistance << "\n";
        fHistManager.FillTH1(histName.c_str(), "jetDistance");
      }
    }

    // Record all cuts passed
    if (returnValue == true) {
      fHistManager.FillTH1(histName.c_str(), "passedAllCuts");
    }
  }
  else {
    AliDebugStream(5) << "Rejected jet because it was not matched to a external event jet.\n";
    fHistManager.FillTH1(histName.c_str(), "noMatch");
    returnValue = false;
  }

  return returnValue;
}

THnSparse* AliAnalysisTaskEmcalJetHCorrelations::NewTHnSparseF(const char* name, UInt_t entries)
{
  Int_t count = 0;
  UInt_t tmp = entries;
  while(tmp!=0){
    count++;
    tmp = tmp &~ -tmp;  // clear lowest bit
  }

  TString hnTitle(name);
  const Int_t dim = count;
  Int_t nbins[dim];
  Double_t xmin[dim];
  Double_t xmax[dim];

  Int_t i=0;
  Int_t c=0;
  while(c<dim && i<32){
    if(entries&(1<<i)){

      TString label("");
      GetDimParams(i, label, nbins[c], xmin[c], xmax[c]);
      hnTitle += Form(";%s",label.Data());
      c++;
    }

    i++;
  }
  hnTitle += ";";

  return new THnSparseF(name, hnTitle.Data(), dim, nbins, xmin, xmax);
}

void AliAnalysisTaskEmcalJetHCorrelations::GetDimParams(Int_t iEntry, TString &label, Int_t &nbins, Double_t &xmin, Double_t &xmax)
{
  const Double_t pi = TMath::Pi();

  switch(iEntry){

    case 0:
      label = "V0 centrality (%)";
      nbins = 10;
      xmin = 0.;
      xmax = 100.;
      break;

    case 1:
      label = "Jet p_{T}";
      nbins = 20;
      xmin = 0.;
      xmax = 200.;
      break;

    case 2:
      if(fDoWiderTrackBin) {
        label = "Track p_{T}";
        nbins = 40;
        xmin = 0.;
        xmax = 10.;
      } else {
        label = "Track p_{T}";
        nbins = 100;
        xmin = 0.;
        xmax = 10;
      }
      break;

    case 3:
      label = "#delta#eta";
      nbins = 24;
      xmin = -1.2;
      xmax = 1.2;
      break;

    case 4:
      label = "#delta#phi";
      nbins = 72;
      xmin = -0.5*pi;
      xmax = 1.5*pi;
      break;         

    case 5:
      label = "Leading Jet";
      nbins = 3;
      xmin = -0.5;
      xmax = 2.5;
      break;

    case 6:
      label = "Trigger track";
      nbins = 10;
      xmin = 0;
      xmax = 50;
      break;

    case 7:
      label = "deltaR";
      nbins = 10;
      xmin = 0.;
      xmax = 5.0;
      break;

    case 8:
      label = "Leading track";
      nbins = 20;
      xmin = 0;
      xmax = 50;
      break;

    case 9:
      label = "Event plane angle";
      nbins = 3;
      xmin = 0;
      xmax = TMath::Pi()/2.;
      break;
  }
}

TObjArray* AliAnalysisTaskEmcalJetHCorrelations::CloneAndReduceTrackList(std::vector<unsigned int> & rejectedTrackIndices, const bool useRejectedList)
{
  // clones a track list by using AliBasicTrack which uses much less memory (used for event mixing)
  TObjArray* tracksClone = new TObjArray;
  tracksClone->SetOwner(kTRUE);

  // Loop over all tracks
  AliVParticle * particle = 0;
  AliBasicParticle * clone = 0;
  AliTrackContainer * tracks = GetTrackContainer("tracksForCorrelations");

  auto particlesIter = tracks->accepted_momentum();
  for (auto particleIter = particlesIter.begin(); particleIter != particlesIter.end(); particleIter++)
  {
    // Retrieve the particle
    particle = particleIter->second;

    // Artificial inefficiency
    bool rejectParticle = CheckArtificialTrackEfficiency(particleIter.current_index(), rejectedTrackIndices, useRejectedList);
    if (rejectParticle) {
      AliDebugStream(4) << "Track rejected in CloneAndReduceTrackList()\n";
      continue;
    }

    // Fill some QA information about the tracks
    Int_t trackPtBin = GetTrackPtBin(particle->Pt());
    if(trackPtBin > -1) fHistTrackEtaPhi[trackPtBin]->Fill(particle->Eta(),particle->Phi());

    // Create new particle
    clone = new AliBasicParticle(particle->Eta(), particle->Phi(), particle->Pt(), particle->Charge());
    // Set so that we can do comparisons using the IsEqual() function.
    clone->SetUniqueID(particle->GetUniqueID());

    tracksClone->Add(clone);
  }

  return tracksClone;
}

Double_t AliAnalysisTaskEmcalJetHCorrelations::EffCorrection(Double_t trackETA, Double_t trackPT) const {
  return EffCorrection(trackETA, trackPT, fBeamType);
}

Double_t AliAnalysisTaskEmcalJetHCorrelations::EffCorrection(Double_t trackETA, Double_t trackPT, AliAnalysisTaskEmcal::BeamType beamType) const
{
  // default (current) parameters
  // x-variable = track pt, y-variable = track eta
  Double_t x = trackPT;
  Double_t y = trackETA;
  double etaaxis = 0;
  double ptaxis = 0;

  // Efficiency paramaters
  double TRefficiency = -1;
  int effSwitch = 1;

  if (fSingleTrackEfficiencyCorrectionType == AliAnalysisTaskEmcalJetHCorrelations::kEffAutomaticConfiguration) {
    if (beamType == AliAnalysisTaskEmcal::kAA) {
      // Setup for Pb--Pb
      int runQuality = -1;
      // Semi-Good OROC C08 Runlists
      if (fCurrentRunNumber == 169975 || fCurrentRunNumber == 169981 || fCurrentRunNumber == 170038 || fCurrentRunNumber == 170040 || fCurrentRunNumber == 170083 || fCurrentRunNumber == 170084 || fCurrentRunNumber == 170085 || fCurrentRunNumber == 170088 || fCurrentRunNumber == 170089 || fCurrentRunNumber == 170091 || fCurrentRunNumber == 170152 || fCurrentRunNumber == 170155 || fCurrentRunNumber == 170159 || fCurrentRunNumber == 170163 || fCurrentRunNumber == 170193 || fCurrentRunNumber == 170195 || fCurrentRunNumber == 170203 || fCurrentRunNumber == 170204 || fCurrentRunNumber == 170228 || fCurrentRunNumber == 170230 || fCurrentRunNumber == 170268 || fCurrentRunNumber == 170269 || fCurrentRunNumber == 170270 || fCurrentRunNumber == 170306 || fCurrentRunNumber == 170308 || fCurrentRunNumber == 170309) runQuality = 0;

      // Good Runlists
      if (fCurrentRunNumber == 167902 || fCurrentRunNumber == 167903 || fCurrentRunNumber == 167915 || fCurrentRunNumber == 167920 || fCurrentRunNumber == 167987 || fCurrentRunNumber == 167988 || fCurrentRunNumber == 168066 || fCurrentRunNumber == 168068 || fCurrentRunNumber == 168069 || fCurrentRunNumber == 168076 || fCurrentRunNumber == 168104 || fCurrentRunNumber == 168107 || fCurrentRunNumber == 168108 || fCurrentRunNumber == 168115 || fCurrentRunNumber == 168212 || fCurrentRunNumber == 168310 || fCurrentRunNumber == 168311 || fCurrentRunNumber == 168322 || fCurrentRunNumber == 168325 || fCurrentRunNumber == 168341 || fCurrentRunNumber == 168342 || fCurrentRunNumber == 168361 || fCurrentRunNumber == 168362 || fCurrentRunNumber == 168458 || fCurrentRunNumber == 168460 || fCurrentRunNumber == 168461 || fCurrentRunNumber == 168464 || fCurrentRunNumber == 168467 || fCurrentRunNumber == 168511 || fCurrentRunNumber == 168512 || fCurrentRunNumber == 168777 || fCurrentRunNumber == 168826 || fCurrentRunNumber == 168984 || fCurrentRunNumber == 168988 || fCurrentRunNumber == 168992 || fCurrentRunNumber == 169035 || fCurrentRunNumber == 169091 || fCurrentRunNumber == 169094 || fCurrentRunNumber == 169138 || fCurrentRunNumber == 169143 || fCurrentRunNumber == 169144 || fCurrentRunNumber == 169145 || fCurrentRunNumber == 169148 || fCurrentRunNumber == 169156 || fCurrentRunNumber == 169160 || fCurrentRunNumber == 169167 || fCurrentRunNumber == 169238 || fCurrentRunNumber == 169411 || fCurrentRunNumber == 169415 || fCurrentRunNumber == 169417 || fCurrentRunNumber == 169835 || fCurrentRunNumber == 169837 || fCurrentRunNumber == 169838 || fCurrentRunNumber == 169846 || fCurrentRunNumber == 169855 || fCurrentRunNumber == 169858 || fCurrentRunNumber == 169859 || fCurrentRunNumber == 169923 || fCurrentRunNumber == 169956 || fCurrentRunNumber == 170027 || fCurrentRunNumber == 170036 || fCurrentRunNumber == 170081) runQuality = 1;

      // Determine which efficiency to use.
      // This is just a way to map all possible values of the cent bin and runQuality to a unique flag.
      // 4 is the number of cent bins, and we want to index the effSwitch starting at 2.
      if (runQuality != -1) {
        effSwitch = 2 + runQuality*4 + fCentBin;
      }
    }
    else if (beamType == AliAnalysisTaskEmcal::kpA) {
      // pA
      AliErrorStream() << "Single track efficiency for pA is not available.\n";
      return 0;
    }
    else if (beamType == AliAnalysisTaskEmcal::kpp) {
      // Setup for pp
      effSwitch = 10;
    }
    else {
      AliErrorStream() << "Beam type " << fBeamType << " is not defined\n";
      return 0;
    }
  }
  else if (fSingleTrackEfficiencyCorrectionType == AliAnalysisTaskEmcalJetHCorrelations::kEffPP) {
    // Manually set to pp (for example, during embedding)
    effSwitch = 10;
  }
  else if (fSingleTrackEfficiencyCorrectionType == AliAnalysisTaskEmcalJetHCorrelations::kEffDisable) {
    // Use the default value, which is to have a constant efficiency of 1
    effSwitch = 1;
  }
  else {
    AliErrorStream() << "Single track efficiency correction type " << fSingleTrackEfficiencyCorrectionType << " is not recongized!\n";
  }

  AliDebugStream(5) << "Using efficiency switch value of " << effSwitch << "\n";

  switch(effSwitch) {
    case 1 :
      // first switch value - TRefficiency not used so = 1
      // In this case, the run number isn't in any run list, so efficiency = 1
      TRefficiency = 1.0;
      break;

    case 2 :
      // Parameter values for Semi-GOOD TPC (LHC11h) runs (0-10%):
      ptaxis = (x<2.9)*(p0_10SG[0]*exp(-pow(p0_10SG[1]/x,p0_10SG[2])) + p0_10SG[3]*x) + (x>=2.9)*(p0_10SG[4] + p0_10SG[5]*x + p0_10SG[6]*x*x);
      etaaxis = (y<-0.07)*(p0_10SG[7]*exp(-pow(p0_10SG[8]/TMath::Abs(y+0.91),p0_10SG[9])) + p0_10SG[10]*y) + (y>=-0.07 && y<=0.4)*(p0_10SG[11] + p0_10SG[12]*y + p0_10SG[13]*y*y) + (y>0.4)*(p0_10SG[14]*exp(-pow(p0_10SG[15]/TMath::Abs(-y+0.91),p0_10SG[16])));
      TRefficiency = ptaxis*etaaxis;
      break;

    case 3 :
      // Parameter values for Semi-GOOD TPC (LHC11h) runs (10-30%):
      ptaxis = (x<2.9)*(p10_30SG[0]*exp(-pow(p10_30SG[1]/x,p10_30SG[2])) + p10_30SG[3]*x) + (x>=2.9)*(p10_30SG[4] + p10_30SG[5]*x + p10_30SG[6]*x*x);
      etaaxis = (y<-0.07)*(p10_30SG[7]*exp(-pow(p10_30SG[8]/TMath::Abs(y+0.91),p10_30SG[9])) + p10_30SG[10]*y) + (y>=-0.07 && y<=0.4)*(p10_30SG[11] + p10_30SG[12]*y + p10_30SG[13]*y*y) + (y>0.4)*(p10_30SG[14]*exp(-pow(p10_30SG[15]/TMath::Abs(-y+0.91),p10_30SG[16])));
      TRefficiency = ptaxis*etaaxis;
      break;

    case 4 :
      // Parameter values for Semi-GOOD TPC (LHC11h) runs (30-50%):
      ptaxis = (x<2.9)*(p30_50SG[0]*exp(-pow(p30_50SG[1]/x,p30_50SG[2])) + p30_50SG[3]*x) + (x>=2.9)*(p30_50SG[4] + p30_50SG[5]*x + p30_50SG[6]*x*x);
      etaaxis = (y<-0.07)*(p30_50SG[7]*exp(-pow(p30_50SG[8]/TMath::Abs(y+0.91),p30_50SG[9])) + p30_50SG[10]*y) + (y>=-0.07 && y<=0.4)*(p30_50SG[11] + p30_50SG[12]*y + p30_50SG[13]*y*y) + (y>0.4)*(p30_50SG[14]*exp(-pow(p30_50SG[15]/TMath::Abs(-y+0.91),p30_50SG[16])));
      TRefficiency = ptaxis*etaaxis;
      break;

    case 5 :
      // Parameter values for Semi-GOOD TPC (LHC11h) runs (50-90%):
      ptaxis = (x<2.9)*(p50_90SG[0]*exp(-pow(p50_90SG[1]/x,p50_90SG[2])) + p50_90SG[3]*x) + (x>=2.9)*(p50_90SG[4] + p50_90SG[5]*x + p50_90SG[6]*x*x);
      etaaxis = (y<-0.07)*(p50_90SG[7]*exp(-pow(p50_90SG[8]/TMath::Abs(y+0.91),p50_90SG[9])) + p50_90SG[10]*y) + (y>=-0.07 && y<=0.4)*(p50_90SG[11] + p50_90SG[12]*y + p50_90SG[13]*y*y) + (y>0.4)*(p50_90SG[14]*exp(-pow(p50_90SG[15]/TMath::Abs(-y+0.91),p50_90SG[16])));
      TRefficiency = ptaxis*etaaxis;
      break;

    case 6 :
      // Parameter values for GOOD TPC (LHC11h) runs (0-10%):
      ptaxis = (x<2.9)*(p0_10G[0]*exp(-pow(p0_10G[1]/x,p0_10G[2])) + p0_10G[3]*x) + (x>=2.9)*(p0_10G[4] + p0_10G[5]*x + p0_10G[6]*x*x);
      etaaxis = (y<0.0)*(p0_10G[7]*exp(-pow(p0_10G[8]/TMath::Abs(y+0.91),p0_10G[9])) + p0_10G[10]*y) + (y>=0.0 && y<=0.4)*(p0_10G[11] + p0_10G[12]*y + p0_10G[13]*y*y) + (y>0.4)*(p0_10G[14]*exp(-pow(p0_10G[15]/TMath::Abs(-y+0.91),p0_10G[16])));
      TRefficiency = ptaxis*etaaxis;
      break;

    case 7 :
      // Parameter values for GOOD TPC (LHC11h) runs (10-30%):
      ptaxis = (x<2.9)*(p10_30G[0]*exp(-pow(p10_30G[1]/x,p10_30G[2])) + p10_30G[3]*x) + (x>=2.9)*(p10_30G[4] + p10_30G[5]*x + p10_30G[6]*x*x);
      etaaxis = (y<0.0)*(p10_30G[7]*exp(-pow(p10_30G[8]/TMath::Abs(y+0.91),p10_30G[9])) + p10_30G[10]*y) + (y>=0.0 && y<=0.4)*(p10_30G[11] + p10_30G[12]*y + p10_30G[13]*y*y) + (y>0.4)*(p10_30G[14]*exp(-pow(p10_30G[15]/TMath::Abs(-y+0.91),p10_30G[16])));
      TRefficiency = ptaxis*etaaxis;
      break;

    case 8 :
      // Parameter values for GOOD TPC (LHC11h) runs (30-50%):
      ptaxis = (x<2.9)*(p30_50G[0]*exp(-pow(p30_50G[1]/x,p30_50G[2])) + p30_50G[3]*x) + (x>=2.9)*(p30_50G[4] + p30_50G[5]*x + p30_50G[6]*x*x);
      etaaxis = (y<0.0)*(p30_50G[7]*exp(-pow(p30_50G[8]/TMath::Abs(y+0.91),p30_50G[9])) + p30_50G[10]*y) + (y>=0.0 && y<=0.4)*(p30_50G[11] + p30_50G[12]*y + p30_50G[13]*y*y) + (y>0.4)*(p30_50G[14]*exp(-pow(p30_50G[15]/TMath::Abs(-y+0.91),p30_50G[16])));
      TRefficiency = ptaxis*etaaxis;
      break;

    case 9 :
      // Parameter values for GOOD TPC (LHC11h) runs (50-90%):
      ptaxis = (x<2.9)*(p50_90G[0]*exp(-pow(p50_90G[1]/x,p50_90G[2])) + p50_90G[3]*x) + (x>=2.9)*(p50_90G[4] + p50_90G[5]*x + p50_90G[6]*x*x);
      etaaxis = (y<0.0)*(p50_90G[7]*exp(-pow(p50_90G[8]/TMath::Abs(y+0.91),p50_90G[9])) + p50_90G[10]*y) + (y>=0.0 && y<=0.4)*(p50_90G[11] + p50_90G[12]*y + p50_90G[13]*y*y) + (y>0.4)*(p50_90G[14]*exp(-pow(p50_90G[15]/TMath::Abs(-y+0.91),p50_90G[16])));
      TRefficiency = ptaxis*etaaxis;
      break;

    case 10 :
      {
        // Track efficiency for pp
        // Calculated using LHC12f1a. See analysis note for more details!
        // If the trackPt > 6 GeV, then all we need is this coefficient
        Double_t coefficient = 0.898052;                                                // p6
        if (trackPT < 6) {
          coefficient =  (1 + -0.442232 * trackPT                                     // p0
                   +  0.501831 * std::pow(trackPT, 2)                        // p1
                   + -0.252024 * std::pow(trackPT, 3)                        // p2
                   +  0.062964 * std::pow(trackPT, 4)                        // p3
                   + -0.007681 * std::pow(trackPT, 5)                        // p4
                   +  0.000365 * std::pow(trackPT, 6));                      // p5
        }

        // Calculate track eff
        TRefficiency = coefficient * (1 +  0.402825 * std::abs(trackETA)                // p7
                        + -2.213152 * std::pow(trackETA, 2)             // p8
                        +  4.311098 * std::abs(std::pow(trackETA, 3))   // p9
                        + -2.778200 * std::pow(trackETA, 4));           // p10
        break;
      }

    default :
      // no Efficiency Switch option selected.. therefore don't correct, and set eff = 1
      // ie. The efficiency correction is disabled.
      AliErrorStream() << "No single track efficiency setting selected! Please select one.\n";
      TRefficiency = 0.;
  }

  return TRefficiency;
}

void AliAnalysisTaskEmcalJetHCorrelations::FillHist(TH1 * hist, Double_t fillValue, Double_t weight, Bool_t noCorrection)
{
  if (fJESCorrectionHist == 0 || noCorrection == kTRUE)
  {
    AliDebugStream(3) << GetName() << ":" << hist->GetName() << ": " << std::boolalpha << "Using normal weights: JESHist: " << (fJESCorrectionHist ? fJESCorrectionHist->GetName() : "Null") << ", noCorrection: " << noCorrection << std::endl;
    hist->Fill(fillValue, weight);
  }
  else
  {
    // Determine where to get the values in the correction hist
    Int_t xBin = fJESCorrectionHist->GetXaxis()->FindBin(fillValue);

    std::vector <Double_t> yBinsContent;
    AliDebug(3, TString::Format("%s: Attempt to access weights from JES correction hist %s with jet pt %f!", GetName(), hist->GetName(), fillValue));
    AccessSetOfYBinValues(fJESCorrectionHist, xBin, yBinsContent);
    AliDebug(3, TString::Format("weights size: %zd", yBinsContent.size()));

    // Loop over all possible bins to contribute.
    // If content is 0 then calling Fill won't make a difference
    for (Int_t index = 1; index <= fJESCorrectionHist->GetYaxis()->GetNbins(); index++)
    {
      // Don't bother trying to fill in the weight is 0
      if (yBinsContent.at(index-1) > 0) {
        // Determine the value to fill based on the center of the bins.
        // This in principle allows the binning between the correction and hist to be different
        Double_t fillLocation = fJESCorrectionHist->GetYaxis()->GetBinCenter(index); 
        AliDebug(4, TString::Format("fillLocation: %f, weight: %f", fillLocation, yBinsContent.at(index-1)));
        // minus 1 since loop starts at 1
        hist->Fill(fillLocation, weight*yBinsContent.at(index-1));
      }
    }

    //TEMP
    //hist->Draw();
    //END TEMP
  }
}

void AliAnalysisTaskEmcalJetHCorrelations::FillHist(THnSparse * hist, Double_t *fillValue, Double_t weight, Bool_t noCorrection)
{
  if (fJESCorrectionHist == 0 || noCorrection == kTRUE)
  {
    AliDebugStream(3) << GetName() << ":" << hist->GetName() << ": " << std::boolalpha << "Using normal weights: JESHist: " << (fJESCorrectionHist ? fJESCorrectionHist->GetName() : "Null") << ", noCorrection: " << noCorrection << std::endl;
    hist->Fill(fillValue, weight);
  }
  else
  {
    // Jet pt is always located in the second position
    Double_t jetPt = fillValue[1];

    // Determine where to get the values in the correction hist
    Int_t xBin = fJESCorrectionHist->GetXaxis()->FindBin(jetPt);

    std::vector <Double_t> yBinsContent;
    AliDebug(3, TString::Format("%s: Attempt to access weights from JES correction hist %s with jet pt %f!", GetName(), hist->GetName(), jetPt));
    AccessSetOfYBinValues(fJESCorrectionHist, xBin, yBinsContent);
    AliDebug(3, TString::Format("weights size: %zd", yBinsContent.size()));

    // Loop over all possible bins to contribute.
    // If content is 0 then calling Fill won't make a difference
    for (Int_t index = 1; index <= fJESCorrectionHist->GetYaxis()->GetNbins(); index++)
    {
      // Don't bother trying to fill in the weight is 0
      if (yBinsContent.at(index-1) > 0) {
        // Determine the value to fill based on the center of the bins.
        // This in principle allows the binning between the correction and hist to be different
        fillValue[1] = fJESCorrectionHist->GetYaxis()->GetBinCenter(index); 
        AliDebug(4,TString::Format("fillValue[1]: %f, weight: %f", fillValue[1], yBinsContent.at(index-1)));
        // minus 1 since loop starts at 1
        hist->Fill(fillValue, weight*yBinsContent.at(index-1));
      }
    }
  }
}

void AliAnalysisTaskEmcalJetHCorrelations::AccessSetOfYBinValues(TH2D * hist, Int_t xBin, std::vector <Double_t> & yBinsContent, Double_t scaleFactor)
{
  for (Int_t index = 1; index <= hist->GetYaxis()->GetNbins(); index++)
  {
    //yBinsContent[index-1] = hist->GetBinContent(hist->GetBin(xBin,index));
    yBinsContent.push_back(hist->GetBinContent(hist->GetBin(xBin,index)));

    if (scaleFactor >= 0)
    {
      // -1 since index starts at 1
      hist->SetBinContent(hist->GetBin(xBin,index), yBinsContent.at(index-1)/scaleFactor);
    }
  }
}

Bool_t AliAnalysisTaskEmcalJetHCorrelations::RetrieveAndInitializeJESCorrectionHist(TString filename, TString histName, Double_t trackBias, Double_t clusterBias)
{
  // Initialize grid connection if necessary
  if (filename.Contains("alien://") && !gGrid) {
    TGrid::Connect("alien://");
  }

  // Setup hist name if a track or cluster bias was defined.
  // NOTE: This can always be disabled by setting kDisableBias.
  //       We arbitrarily add 0.1 to test since the values are doubles and cannot be
  //       tested directly for equality. If we are still less than disable bins, then
  //       it has been set and we should format it.
  // NOTE: To ensure we can disable, we don't just take the member values!
  // NOTE: The histBaseName will be attempted if the formatted name cannot be found.
  TString histBaseName = histName;
  if (trackBias + 0.1 < AliAnalysisTaskEmcalJetHCorrelations::kDisableBias) {
    histName = TString::Format("%s_Track%.2f", histName.Data(), trackBias);
  }
  if (clusterBias + 0.1 < AliAnalysisTaskEmcalJetHCorrelations::kDisableBias) {
    histName = TString::Format("%s_Clus%.2f", histName.Data(), clusterBias);
  }

  // Open file containing the correction
  TFile * jesCorrectionFile = TFile::Open(filename);
  if (!jesCorrectionFile || jesCorrectionFile->IsZombie()) {
    AliError(TString::Format("%s: Could not open JES correction file %s", GetName(), filename.Data()));
    return kFALSE;
  }

  // Retrieve the histogram containing the correction and safely add it to the task.
  TH2D * JESCorrectionHist = dynamic_cast<TH2D*>(jesCorrectionFile->Get(histName.Data()));
  if (JESCorrectionHist) {
    AliInfo(TString::Format("%s: JES correction hist name \"%s\" loaded from file %s.", GetName(), histName.Data(), filename.Data()));
  }
  else {
    AliError(TString::Format("%s: JES correction hist name \"%s\" not found in file %s.", GetName(), histName.Data(), filename.Data()));

    // Attempt the base name instead of the formatted hist name
    JESCorrectionHist = dynamic_cast<TH2D*>(jesCorrectionFile->Get(histBaseName.Data()));
    if (JESCorrectionHist) {
      AliInfo(TString::Format("%s: JES correction hist name \"%s\" loaded from file %s.", GetName(), histBaseName.Data(), filename.Data()));
      histName = histBaseName;
    }
    else
    {
      AliError(TString::Format("%s: JES correction with base hist name %s not found in file %s.", GetName(), histBaseName.Data(), filename.Data()));
      return kFALSE;
    }
  }

  // Clone to ensure that the hist is available
  TH2D * tempHist = static_cast<TH2D *>(JESCorrectionHist->Clone());
  tempHist->SetDirectory(0);
  SetJESCorrectionHist(tempHist);

  // Close file
  jesCorrectionFile->Close();

  // Append to task name for clarity
  // Unfortunately, this doesn't change the name of the output list (it would need to be
  // changed in the AnalysisManager output container), so the suffix is still important
  // if this correction is manually configured!
  TString tempName = GetName();
  TString tag = "_JESCorr";
  // Append the tag if it isn't already included
  if (tempName.Index(tag) == -1) {
    // Insert before the suffix
    Ssiz_t suffixLocation = tempName.Last('_');
    tempName.Insert(suffixLocation, tag.Data());

    // Set the new name
    AliDebug(3, TString::Format("%s: Setting task name to %s", GetName(), tempName.Data()));
    SetName(tempName.Data());
  }

  // Successful
  return kTRUE;
}

AliAnalysisTaskEmcalJetHCorrelations * AliAnalysisTaskEmcalJetHCorrelations::AddTaskEmcalJetHCorrelations(
   const char *nTracks,
   const char *nCaloClusters,
   // Jet options
   const Double_t trackBias,
   const Double_t clusterBias,
   // Mixed event options
   const Int_t nTracksMixedEvent,  // Additionally acts as a switch for enabling mixed events
   const Int_t minNTracksMixedEvent,
   const Int_t minNEventsMixedEvent,
   const UInt_t nCentBinsMixedEvent,
   // Triggers
   UInt_t trigEvent,
   UInt_t mixEvent,
   // Options
   const Bool_t lessSparseAxes,
   const Bool_t widerTrackBin,
   // Corrections
   const AliAnalysisTaskEmcalJetHCorrelations::ESingleTrackEfficiency_t singleTrackEfficiency,
   const Bool_t JESCorrection,
   const char * JESCorrectionFilename,
   const char * JESCorrectionHistName,
   const char *suffix
   )
{
  // Get the pointer to the existing analysis manager via the static access method.
  //==============================================================================
  AliAnalysisManager *mgr = AliAnalysisManager::GetAnalysisManager();
  if (!mgr)
  {
    AliErrorClass("No analysis manager to connect to.");
    return nullptr;
  }

  //-------------------------------------------------------
  // Init the task and do settings
  //-------------------------------------------------------

  // Determine cluster and track names
  TString trackName(nTracks);
  TString clusName(nCaloClusters);

  if (trackName == "usedefault") {
    trackName = AliEmcalContainerUtils::DetermineUseDefaultName(AliEmcalContainerUtils::kTrack);
  }

  if (clusName == "usedefault") {
    clusName = AliEmcalContainerUtils::DetermineUseDefaultName(AliEmcalContainerUtils::kCluster);
  }

  TString name("AliAnalysisTaskJetH");
  if (!trackName.IsNull()) {
    name += TString::Format("_%s", trackName.Data());
  }
  if (!clusName.IsNull()) {
    name += TString::Format("_%s", clusName.Data());
  }
  if (strcmp(suffix, "") != 0) {
    name += TString::Format("_%s", suffix);
  }

  AliAnalysisTaskEmcalJetHCorrelations *correlationTask = new AliAnalysisTaskEmcalJetHCorrelations(name);
  // Set jet bias
  correlationTask->SetTrackBias(trackBias);
  correlationTask->SetClusterBias(clusterBias);
  // Mixed events
  correlationTask->SetEventMixing(static_cast<Bool_t>(nTracksMixedEvent));
  correlationTask->SetNumberOfMixingTracks(nTracksMixedEvent);
  correlationTask->SetMinNTracksForMixedEvents(minNTracksMixedEvent);
  correlationTask->SetMinNEventsForMixedEvents(minNEventsMixedEvent);
  correlationTask->SetNCentBinsMixedEvent(nCentBinsMixedEvent);
  // Triggers
  correlationTask->SetTriggerType(trigEvent);
  correlationTask->SetMixedEventTriggerType(mixEvent);
  // Options
  correlationTask->SetNCentBins(5);
  correlationTask->SetVzRange(-10,10);
  correlationTask->SetDoLessSparseAxes(lessSparseAxes);
  correlationTask->SetDoWiderTrackBin(widerTrackBin);
  // Corrections
  correlationTask->SetSingleTrackEfficiencyType(singleTrackEfficiency);
  if (JESCorrection == kTRUE)
  {
    Bool_t result = correlationTask->RetrieveAndInitializeJESCorrectionHist(JESCorrectionFilename, JESCorrectionHistName, correlationTask->GetTrackBias(), correlationTask->GetClusterBias());
    if (!result) {
      AliErrorClass("Failed to successfully retrieve and initialize the JES correction! Task initialization continuing without JES correction (can be set manually later).");
    }
  }

  //-------------------------------------------------------
  // Final settings, pass to manager and set the containers
  //-------------------------------------------------------

  mgr->AddTask(correlationTask);

  // Create containers for input/output
  mgr->ConnectInput (correlationTask, 0, mgr->GetCommonInputContainer() );
  AliAnalysisDataContainer * cojeth = mgr->CreateContainer(correlationTask->GetName(),
                TList::Class(),
                AliAnalysisManager::kOutputContainer,
                  Form("%s", AliAnalysisManager::GetCommonFileName()));
  mgr->ConnectOutput(correlationTask, 1, cojeth);

  return correlationTask;
}

bool AliAnalysisTaskEmcalJetHCorrelations::ConfigureForStandardAnalysis(std::string trackName,
    std::string clusName,
    const double jetConstituentPtCut,
    const double trackEta,
    const double jetRadius)
{
  bool returnValue = false;
  AliInfoStream() << "Configuring Jet-H Correlations task for a standard analysis.\n";

  // Add Containers
  // Clusters
  if (clusName == "usedefault") {
    clusName = AliEmcalContainerUtils::DetermineUseDefaultName(AliEmcalContainerUtils::kCluster);
  }
  // For jet finding
  AliClusterContainer * clustersForJets = new AliClusterContainer(clusName.c_str());
  clustersForJets->SetName("clustersForJets");
  clustersForJets->SetMinE(jetConstituentPtCut);

  // Tracks
  // For jet finding
  if (trackName == "usedefault") {
    trackName = AliEmcalContainerUtils::DetermineUseDefaultName(AliEmcalContainerUtils::kTrack);
  }
  AliParticleContainer * particlesForJets = CreateParticleOrTrackContainer(trackName.c_str());
  particlesForJets->SetName("particlesForJets");
  particlesForJets->SetMinPt(jetConstituentPtCut);
  particlesForJets->SetEtaLimits(-1.0*trackEta, trackEta);
  // Don't need to adopt the container - we'll just use it to find the right jet collection
  // For correlations
  AliParticleContainer * particlesForCorrelations = CreateParticleOrTrackContainer(trackName.c_str());
  if (particlesForCorrelations)
  {
    particlesForCorrelations->SetName("tracksForCorrelations");
    particlesForCorrelations->SetMinPt(0.15);
    particlesForCorrelations->SetEtaLimits(-1.0*trackEta, trackEta);
    // Adopt the container
    this->AdoptParticleContainer(particlesForCorrelations);
  }
  else {
    AliWarningStream() << "No particle container was successfully created!\n";
  }

  // Jets
  AliJetContainer * jetContainer = this->AddJetContainer(AliJetContainer::kFullJet,
                              AliJetContainer::antikt_algorithm,
                              AliJetContainer::pt_scheme,
                              jetRadius,
                              AliEmcalJet::kEMCALfid,
                              particlesForJets,
                              clustersForJets);
  // 0.6 * jet area
  jetContainer->SetJetAreaCut(jetRadius * jetRadius * TMath::Pi() * 0.6);
  jetContainer->SetMaxTrackPt(100);
  jetContainer->SetJetPtCut(0.1);

  // Successfully configured
  returnValue = true;

  return returnValue;
}

bool AliAnalysisTaskEmcalJetHCorrelations::ConfigureForEmbeddingAnalysis(std::string trackName,
    std::string clusName,
    const double jetConstituentPtCut,
    const double trackEta,
    const double jetRadius,
    const std::string & jetTag,
    const std::string & correlationsTracksCutsPeriod)
{
  bool returnValue = false;
  AliInfoStream() << "Configuring Jet-H Correlations task for an embedding analysis.\n";

  // Set the task to know it that is embedded
  this->SetIsEmbedded(true);

  // Add Containers
  // Clusters
  if (clusName == "usedefault") {
    clusName = AliEmcalContainerUtils::DetermineUseDefaultName(AliEmcalContainerUtils::kCluster);
  }
  // For jet finding
  AliClusterContainer * clustersForJets = new AliClusterContainer(clusName.c_str());
  clustersForJets->SetName("clustersForJets");
  clustersForJets->SetMinE(jetConstituentPtCut);
  // We need the combined clusters, which should be available in the internal event.
  // However, we don't need to adopt the container - we'll just use it to find the right jet collection
  // For correlations
  /*AliClusterContainer * clustersforCorrelations = new AliClusterContainer("usedefault");
  clustersForCorrelations->SetName("clustersForCorrelations");
  clustersForCorrelations->SetMinE(0.30);
  clustersForCorrelations->SetIsEmbedding(true);
  this->AdoptClusterContainer(clustersForCorrelations);*/

  // Tracks
  // For jet finding
  if (trackName == "usedefault") {
    trackName = AliEmcalContainerUtils::DetermineUseDefaultName(AliEmcalContainerUtils::kTrack);
  }
  AliParticleContainer * particlesForJets = CreateParticleOrTrackContainer(trackName.c_str());
  particlesForJets->SetName("particlesForJets");
  particlesForJets->SetMinPt(jetConstituentPtCut);
  particlesForJets->SetEtaLimits(-1.0*trackEta, trackEta);
  // Don't need to adopt the container - we'll just use it to find the right jet collection
  // For correlations
  AliParticleContainer * particlesForCorrelations = CreateParticleOrTrackContainer(trackName.c_str());
  // Ensure that we don't operate on a null pointer
  if (particlesForCorrelations)
  {
    particlesForCorrelations->SetName("tracksForCorrelations");
    particlesForCorrelations->SetMinPt(0.15);
    particlesForCorrelations->SetEtaLimits(-1.0*trackEta, trackEta);
    particlesForCorrelations->SetIsEmbedding(true);
    AliTrackContainer * trackCont = dynamic_cast<AliTrackContainer *>(particlesForCorrelations);
    if (trackCont) {
      // This option only exists for track containers
      trackCont->SetTrackCutsPeriod(correlationsTracksCutsPeriod.c_str());
    }
    // Adopt the container
    this->AdoptParticleContainer(particlesForCorrelations);
  }
  else {
    AliWarningStream() << "No particle container was successfully created!\n";
  }

  // Jets
  // The tag "hybridLevelJets" is defined in the jet finder
  AliJetContainer * jetContainer = this->AddJetContainer(AliJetContainer::kFullJet,
                              AliJetContainer::antikt_algorithm,
                              AliJetContainer::pt_scheme,
                              jetRadius,
                              AliEmcalJet::kEMCALfid,
                              particlesForJets,
                              clustersForJets,
                              jetTag);
  // 0.6 * jet area
  jetContainer->SetJetAreaCut(jetRadius * jetRadius * TMath::Pi() * 0.6);
  jetContainer->SetMaxTrackPt(100);
  jetContainer->SetJetPtCut(0.1);

  // Successfully configured
  returnValue = true;

  return returnValue;
}

AliParticleContainer * AliAnalysisTaskEmcalJetHCorrelations::CreateParticleOrTrackContainer(const std::string & collectionName) const
{
  AliParticleContainer * partCont = 0;
  if (collectionName == AliEmcalContainerUtils::DetermineUseDefaultName(AliEmcalContainerUtils::kTrack)) {
    AliTrackContainer * trackCont = new AliTrackContainer(collectionName.c_str());
    partCont = trackCont;
  }
  else if (collectionName != "") {
    partCont = new AliParticleContainer(collectionName.c_str());
  }

  return partCont;
}

} /* namespace EMCALJetTasks */
} /* namespace PWGJE */