METMaker.cxx

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/*
  Copyright (C) 2002-2023 CERN for the benefit of the ATLAS collaboration
*/
 
// METMaker.cxx
// Implementation file for class METMaker
// Author: T.J.Khoo<khoo@cern.ch>
 
// METUtilities includes
#include "METUtilities/METMaker.h"
#include "METUtilities/METHelpers.h"
 
// MET EDM
#include "xAODMissingET/MissingETContainer.h"
#include "xAODMissingET/MissingETComposition.h"
#include "xAODMissingET/MissingETAuxContainer.h"
#include "xAODMissingET/MissingETAssociationMap.h"
#include "xAODMissingET/MissingETAssociationHelper.h"
 
// Jet EDM
#include "xAODJet/JetAttributes.h"
 
// Tracking EDM
#include "xAODTracking/TrackParticle.h"
#include "xAODTracking/VertexContainer.h"
 
// Shallow copy
#include "xAODCore/ShallowCopy.h"
 
// Muon EDM
#include "xAODMuon/MuonContainer.h"
 
// Electron EDM
#include "xAODEgamma/ElectronContainer.h"
#include "xAODEgamma/EgammaxAODHelpers.h"
 
// framework includes
#include "AsgDataHandles/ReadHandle.h"
#include <AsgTools/AsgToolConfig.h>
#include "xAODPFlow/PFOAuxContainer.h"
#include <xAODCore/AuxContainerBase.h>
#include <AthContainers/AuxElement.h>
 
#include <memory>
 
namespace met {
 
  using xAOD::MissingET;
  using xAOD::MissingETContainer;
  using xAOD::MissingETAssociation;
  using xAOD::MissingETAssociationMap;
  using xAOD::MissingETAuxContainer;
  using xAOD::MissingETComposition;
  using xAOD::IParticle;
  using xAOD::IParticleContainer;
  using xAOD::JetContainer;
  using xAOD::JetConstituentVector;
  using xAOD::TrackParticle;
 
  using iplink_t = ElementLink<xAOD::IParticleContainer>;
  static const SG::AuxElement::ConstAccessor< iplink_t  > acc_originalObject("originalObjectLink");
  static const SG::AuxElement::ConstAccessor< iplink_t  > acc_nominalObject("nominalObjectLink");
  static const SG::AuxElement::ConstAccessor< std::vector<iplink_t > > acc_ghostMuons("GhostMuon");
  static const SG::AuxElement::ConstAccessor< std::vector<iplink_t > > acc_ghostElecs("GhostElec");
 
  static const SG::AuxElement::ConstAccessor< std::vector<int> > acc_trkN("NumTrkPt500");
  static const SG::AuxElement::ConstAccessor< std::vector<float> > acc_trksumpt("SumPtTrkPt500");
  static const SG::AuxElement::ConstAccessor< std::vector<float> > acc_sampleE("EnergyPerSampling");
 
  static const SG::AuxElement::ConstAccessor<float> acc_emf("EMFrac");
  static const SG::AuxElement::ConstAccessor<float> acc_psf("PSFrac");
  static const SG::AuxElement::ConstAccessor<float> acc_width("Width");
  static const SG::AuxElement::ConstAccessor<float> acc_Eloss("EnergyLoss");
 
  static const SG::AuxElement::Accessor< std::vector<iplink_t> > dec_constitObjLinks("ConstitObjectLinks");
  static const SG::AuxElement::Accessor< std::vector<float> > dec_constitObjWeights("ConstitObjectWeights");
 

  // Public methods:
 
  // Constructors
  METMaker::METMaker(const std::string& name) :
    AsgTool(name),
    m_PVkey("PrimaryVertices"),
    m_acc_jetRejectionDec(nullptr),
    m_trkseltool(""),
    m_JvtTool("", this)
  {
    //
    // Property declaration
    //
    declareProperty("JetRejectionDec",    m_jetRejectionDec    = ""                  );
    declareProperty("JetMinEFrac",        m_jetMinEfrac        = 0.0                 );
    declareProperty("JetMinWeightedPt",   m_jetMinWeightedPt   = 20.0e3              );
    declareProperty("JetConstitScaleMom", m_jetConstitScaleMom = "JetConstitScaleMomentum");
    declareProperty("CorrectJetPhi",      m_jetCorrectPhi      = false               );
    declareProperty("DoPFlow",            m_doPFlow            = false               );
    declareProperty("DoSoftTruth",        m_doSoftTruth        = false               );
    declareProperty("DoJetTruth",         m_doConstJet         = false               );
 
    declareProperty("JetSelection",       m_jetSelection       = "Tight"             );
    declareProperty("JetEtaMax",          m_JetEtaMax          = 4.5                 );
    declareProperty("JetEtaForw",         m_JetEtaForw         = 2.5                 );
    declareProperty("CustomCentralJetPt", m_customCenJetPtCut  = 20e3                );
    declareProperty("CustomForwardJetPt", m_customFwdJetPtCut  = 20e3                );
    declareProperty("CustomJetJvtPtMax",  m_customJvtPtMax     = 60e3                );
    declareProperty("CustomJetJvtWP",     m_customJvtWP        = "FixedEffPt"        );
 
    declareProperty("DoMuonEloss",        m_muEloss            = false               );
    declareProperty("ORCaloTaggedMuons",  m_orCaloTaggedMuon   = true                );
    declareProperty("GreedyPhotons",      m_greedyPhotons      = false               );
    declareProperty("VeryGreedyPhotons",  m_veryGreedyPhotons  = false               );
 
    declareProperty("UseGhostMuons",      m_useGhostMuons      = false               );
    declareProperty("DoRemoveMuonJets",   m_doRemoveMuonJets   = true                );
    declareProperty("DoSetMuonJetEMScale", m_doSetMuonJetEMScale = true              );
 
    declareProperty("DoRemoveElecTrks",   m_doRemoveElecTrks   = true                );
    declareProperty("DoRemoveElecTrksEM", m_doRemoveElecTrksEM = false               );
 
    declareProperty("skipSystematicJetSelection", m_skipSystematicJetSelection = false,
            "EXPERIMENTAL: whether to use simplified OR based on nominal jets "
            "and for jet-related systematics only. "
            "WARNING: this property is strictly for doing physics studies of the feasibility "
            "of this OR scheme, it should not be used in a regular analysis");
 
    // muon overlap variables (expert use only)
    declareProperty("JetTrkNMuOlap",      m_jetTrkNMuOlap = 5                        );
    declareProperty("JetWidthMuOlap",     m_jetWidthMuOlap = 0.1                     );
    declareProperty("JetPsEMuOlap",       m_jetPsEMuOlap = 2.5e3                     );
    declareProperty("JetEmfMuOlap",       m_jetEmfMuOlap = 0.9                       );
    declareProperty("JetTrkPtMuPt",       m_jetTrkPtMuPt = 0.8                       );
    declareProperty("muIDPTJetPtRatioMuOlap", m_muIDPTJetPtRatioMuOlap = 2.0         );
 
    declareProperty("MissingObjWarnThreshold", m_missObjWarningPtThreshold = 7.0e3   );
 
    declareProperty("TrackSelectorTool",  m_trkseltool                               );
    declareProperty("JvtSelTool",         m_JvtTool                                  );
  }
 
  // Destructor
  METMaker::~METMaker()
  = default;
 
  // Athena algtool's Hooks
  StatusCode METMaker::initialize()
  {
    ATH_MSG_INFO ("Initializing " << name() << "...");
 
    ATH_MSG_INFO("Use jet selection criterion: " << m_jetSelection << " PFlow: " << m_doPFlow);
    if (m_jetSelection == "Loose")       { m_CenJetPtCut = 20e3; m_FwdJetPtCut = 20e3; m_JvtWP = "FixedEffPt"; m_JvtPtMax = 60e3; }
    else if (m_jetSelection == "Tight")  { m_CenJetPtCut = 20e3; m_FwdJetPtCut = 30e3; m_JvtWP = "FixedEffPt"; m_JvtPtMax = 60e3; }
    else if (m_jetSelection == "Tighter"){ m_CenJetPtCut = 20e3; m_FwdJetPtCut = 35e3; m_JvtWP = "FixedEffPt"; m_JvtPtMax = 60e3; }
    else if (m_jetSelection == "Tenacious"){ m_CenJetPtCut = 20e3; m_FwdJetPtCut = 40e3; m_JvtWP = "FixedEffPt"; m_JvtPtMax = 60e3; }
    else if (m_jetSelection == "Tier0")  { m_CenJetPtCut = 0;    m_FwdJetPtCut = 0; m_JvtWP = "None"; }
    else if (m_jetSelection == "Expert")  {
      ATH_MSG_INFO("Custom jet selection configured. *** FOR EXPERT USE ONLY ***");
      m_CenJetPtCut = m_customCenJetPtCut;
      m_FwdJetPtCut = m_customFwdJetPtCut;
      m_JvtPtMax = m_customJvtPtMax;
      m_JvtWP = m_customJvtWP;
    }
    else if (m_jetSelection == "HRecoil")  {
      ATH_MSG_INFO("Jet selection for hadronic recoil calculation is configured.");
      m_CenJetPtCut = 9999e3;
      m_FwdJetPtCut = 9999e3;
      m_JetEtaMax   = 5;
      m_JvtWP       = "None";
    }
    else {
      if (m_jetSelection == "Default") ATH_MSG_WARNING( "WARNING:  Default is now deprecated" );
      ATH_MSG_ERROR( "Error: No available jet selection found! Please update JetSelection in METMaker. Choose one: Loose, Tight (recommended), Tighter, Tenacious" );
      return StatusCode::FAILURE;
    }
 
    if (!m_trkseltool.empty()) ATH_CHECK( m_trkseltool.retrieve() );
 
    ATH_CHECK( m_jetContainer.initialize(m_JvtWP != "None" && m_JvtTool.empty()) );
 
    if (m_JvtWP != "None"){
      if (m_JvtTool.empty()) {
        asg::AsgToolConfig config_jvt ("CP::NNJvtSelectionTool/JvtSelTool_METMaker_" + m_jetSelection);
        ATH_CHECK(config_jvt.setProperty("JetContainer", m_jetContainer.key()));
        ATH_CHECK(config_jvt.setProperty("WorkingPoint", m_JvtWP));
        ATH_CHECK(config_jvt.setProperty("JvtMomentName", "NNJvt"));
        ATH_CHECK(config_jvt.setProperty("MaxPtForJvt", m_JvtPtMax));
        ATH_CHECK(config_jvt.makePrivateTool(m_JvtTool));
      }
      ATH_CHECK(m_JvtTool.retrieve());
    }
 
    // ReadHandleKey(s)
    ATH_CHECK( m_PVkey.initialize() );
 
    // configurable accessors
    if (!m_jetRejectionDec.empty()) {
      m_acc_jetRejectionDec = std::make_unique<SG::AuxElement::ConstAccessor<char>>(m_jetRejectionDec);
      ATH_MSG_INFO("Applying additional jet rejection criterium in MET calculation: " << m_jetRejectionDec);
    }
 
    ATH_MSG_INFO("Suppressing warnings of objects missing in METAssociationMap for objects with pT < " << m_missObjWarningPtThreshold/1e3 << " GeV.");
 
    // overlap removal simplification?
    if (m_skipSystematicJetSelection) {
      ATH_MSG_INFO("Requesting simplified overlap removal procedure in MET calculation");
    }
    
    return StatusCode::SUCCESS;
  }
 
 
  // **** Rebuild generic MET term ****
 
  StatusCode METMaker::rebuildMET(const std::string& metKey,
                                  xAOD::Type::ObjectType metType,
                                  xAOD::MissingETContainer* metCont,
                                  const xAOD::IParticleContainer* collection,
                                  xAOD::MissingETAssociationHelper& helper,
                                  MissingETBase::UsageHandler::Policy objScale) const
  {
    MissingETBase::Types::bitmask_t metSource;
    switch(metType) {
    case xAOD::Type::Electron:
      metSource = MissingETBase::Source::electron();
      break;
    case xAOD::Type::Photon:
      metSource = MissingETBase::Source::photon();
      break;
    case xAOD::Type::Tau:
      metSource = MissingETBase::Source::tau();
      break;
    case xAOD::Type::Muon:
      metSource = MissingETBase::Source::muon();
      break;
    case xAOD::Type::Jet:
      ATH_MSG_WARNING("Incorrect use of rebuildMET -- use rebuildJetMET for RefJet term");
      return StatusCode::FAILURE;
    default:
      ATH_MSG_WARNING("Invalid object type provided: " << metType);
      return StatusCode::FAILURE;
    }
 
    MissingET* met = nullptr;
    if( fillMET(met,metCont, metKey , metSource) != StatusCode::SUCCESS) {
      ATH_MSG_ERROR("failed to fill MET term \"" << metKey << "\"");
      return StatusCode::FAILURE;
    }
 
    // If muon eloss corrections are required, create a new term to hold these if it doesn't already exist
    if(metType==xAOD::Type::Muon && (m_muEloss || m_doSetMuonJetEMScale) && !(*metCont)["MuonEloss"]) {
      MissingET* met_muEloss = nullptr;
      if( fillMET(met_muEloss,metCont,"MuonEloss",
                  MissingETBase::Source::Type::Muon | MissingETBase::Source::Category::Calo) != StatusCode::SUCCESS) {
        ATH_MSG_ERROR("failed to create Muon Eloss MET term");
        return StatusCode::FAILURE;
      }
    }
 
    return rebuildMET(met,collection,helper,objScale);
  }
 
  StatusCode METMaker::rebuildMET(xAOD::MissingET* met,
                                  const xAOD::IParticleContainer* collection,
                                  xAOD::MissingETAssociationHelper& helper,
                                  MissingETBase::UsageHandler::Policy objScale) const
  {
    MissingETBase::UsageHandler::Policy p = MissingETBase::UsageHandler::OnlyCluster;
    bool removeOverlap = true;
    if(!collection->empty()) {
      const IParticle* obj = collection->front();
      if(obj->type()==xAOD::Type::Muon) {
        p = MissingETBase::UsageHandler::OnlyTrack;
        removeOverlap = false;
      }
    }
    if (m_doSoftTruth) p = MissingETBase::UsageHandler::TruthParticle;
    if (m_doPFlow) p = MissingETBase::UsageHandler::ParticleFlow;
    return rebuildMET(met,collection,helper,p,removeOverlap,objScale);
  }
 
  StatusCode METMaker::rebuildMET(xAOD::MissingET* met,
                                  const xAOD::IParticleContainer* collection,
                                  xAOD::MissingETAssociationHelper& helper,
                                  MissingETBase::UsageHandler::Policy p,
                                  bool removeOverlap,
                                  MissingETBase::UsageHandler::Policy objScale) const {
    if(!met || !collection) {
      ATH_MSG_ERROR("Invalid pointer supplied for "
                      << "MET (" << met << ") or "
                      << "collection (" << collection << ").");
      return StatusCode::FAILURE;
    }
    const xAOD::MissingETAssociationMap* map = helper.map();
    if(!map){
      ATH_MSG_ERROR("MET Association Helper isn't associated with a MissingETAssociationMap!");
      return StatusCode::FAILURE;
    }
    if(map->empty()) {
      ATH_MSG_WARNING("Incomplete association map received. Cannot rebuild MET.");
      ATH_MSG_WARNING("Note: METMaker should only be run on events containing at least one PV");
      return StatusCode::SUCCESS;
    }
    ATH_MSG_VERBOSE("Building MET term " << met->name());
    dec_constitObjLinks(*met) = std::vector<iplink_t>(0);
    dec_constitObjWeights(*met) = std::vector<float>(0);
    std::vector<iplink_t>& uniqueLinks = dec_constitObjLinks(*met);
    std::vector<float>& uniqueWeights = dec_constitObjWeights(*met);
    uniqueLinks.reserve(collection->size());
    uniqueWeights.reserve(collection->size());
 
    // Get the hashed key of this collection, if we can. Though his only works
    // if
    //   1. the container is an owning container, and not just a view;
    //   2. the container is in the event store already.
    // Since we will be creating ElementLink-s to these objects later on in the
    // code, and it should work in AnalysisBase, only the first one of these
    // is checked. Since the code can not work otherwise.
    SG::sgkey_t collectionSgKey = 0;
    if(collection->ownPolicy() == SG::OWN_ELEMENTS) {
      collectionSgKey = getKey(collection);
      if(collectionSgKey == 0) {
        ATH_MSG_ERROR("Could not find the collection with pointer: "
                      << collection);
        return StatusCode::FAILURE;
      }
    }
 
    if(collection->empty()) return StatusCode::SUCCESS;
 
    bool originalInputs = !acc_originalObject.isAvailable(*collection->front());
    bool isShallowCopy = dynamic_cast<const xAOD::ShallowAuxContainer*>(collection->front()->container()->getConstStore());
    ATH_MSG_VERBOSE("const store = " << collection->front()->container()->getConstStore());
    if(isShallowCopy && originalInputs) {
      ATH_MSG_WARNING("Shallow copy provided without \"originalObjectLinks\" decoration! "
                      << "Overlap removal cannot be done. "
                      << "Will not compute this term.");
      ATH_MSG_WARNING("Please apply xAOD::setOriginalObjectLink() from xAODBase/IParticleHelpers.h");
      return StatusCode::SUCCESS;
    }
    ATH_MSG_VERBOSE("Original inputs? " << originalInputs);
    for(const auto *const obj : *collection) {
      const IParticle* orig = obj;
      bool selected = false;
      if(!originalInputs) { orig = *acc_originalObject(*obj); }
      std::vector<const xAOD::MissingETAssociation*> assocs = xAOD::MissingETComposition::getAssociations(map,orig);
      if(assocs.empty()) {
        std::string message = "Object is not in association map. Did you make a deep copy but fail to set the \"originalObjectLinks\" decoration? "
                              "If not, Please apply xAOD::setOriginalObjectLink() from xAODBase/IParticleHelpers.h";
        // Avoid warnings for leptons with pT below threshold for association map
        if (orig->pt()>m_missObjWarningPtThreshold) {
            ATH_MSG_WARNING(message);
        } else {
            ATH_MSG_DEBUG(message);
        }
        // if this is an uncalibrated electron below the threshold, then we put it into the soft term
        if(orig->type()==xAOD::Type::Electron){
          iplink_t objLink;
          if(collectionSgKey == 0) {
            const xAOD::IParticleContainer* ipc = static_cast<const xAOD::IParticleContainer*>(obj->container());
            objLink = iplink_t(*ipc, obj->index());
          } else {
            objLink = iplink_t(collectionSgKey, obj->index());
          }
          uniqueLinks.emplace_back( objLink );
          uniqueWeights.emplace_back( 0. );
          message = "Missing an electron from the MET map. Included as a track in the soft term. pT: " + std::to_string(obj->pt()/1e3) + " GeV";
          if (orig->pt()>m_missObjWarningPtThreshold) {
              ATH_MSG_WARNING(message);
          } else {
              ATH_MSG_DEBUG(message);
          }
          continue;
        } else {
          ATH_MSG_ERROR("Missing an object: " << orig->type() << " pT: " << obj->pt()/1e3 << " GeV, may be duplicated in the soft term.");
        }
      }
 
      // If the object has already been selected and processed, ignore it.
      if(MissingETComposition::objSelected(helper,orig)) continue;
      selected = MissingETComposition::selectIfNoOverlaps(helper,orig,p) || !removeOverlap;
      ATH_MSG_VERBOSE(obj->type() << " (" << orig <<") with pt " << obj->pt()
                      << " is " << ( selected ? "non-" : "") << "overlapping");
 
      // Greedy photon options: set selection flags
      if ((m_greedyPhotons || m_veryGreedyPhotons) && selected && obj->type() == xAOD::Type::Photon){
        for(const xAOD::MissingETAssociation* assoc : assocs){
          std::vector<size_t> indices = assoc->overlapIndices(orig);
          std::vector<const xAOD::IParticle*> allObjects = assoc->objects();
          for (size_t index : indices){
            const xAOD::IParticle* thisObj = allObjects[index];
            if(!thisObj) continue;
            if ((thisObj->type() == xAOD::Type::Jet && m_veryGreedyPhotons) ||
                  thisObj->type() == xAOD::Type::Electron)
              helper.setObjSelectionFlag(assoc, thisObj, true);
          }
        }
      }
 
      //Do special overlap removal for calo tagged muons
      if(m_orCaloTaggedMuon && !removeOverlap && 
         orig->type()==xAOD::Type::Muon && static_cast<const xAOD::Muon*>(orig)->muonType()==xAOD::Muon::MuonType::CaloTagged) {
        for (size_t i = 0; i < assocs.size(); i++) {
          std::vector<size_t> ind = assocs[i]->overlapIndices(orig);
          std::vector<const xAOD::IParticle*> allObjects = assocs[i]->objects();
          for (size_t indi = 0; indi < ind.size(); indi++) if (allObjects[ind[indi]]) {
              if (allObjects[ind[indi]]->type()==xAOD::Type::Electron
                  && helper.objSelected(assocs[i], ind[indi])) {
                selected = false;
                break;
              }
            }
        }
      }
      // Don't overlap remove muons, but flag the non-overlapping muons to take out their tracks from jets
      // Removed eloss from here -- clusters already flagged.
      // To be handled in rebuildJetMET
      if(selected) {
        if(objScale==MissingETBase::UsageHandler::PhysicsObject) {
          ATH_MSG_VERBOSE("Add object with pt " << obj->pt());
          *met += obj;
        } else {
          MissingETBase::Types::constvec_t constvec = MissingETComposition::getConstVec(map,obj,objScale);
          ATH_MSG_VERBOSE("Add truth object with pt " << constvec.cpt());
          met->add(constvec.cpx(),constvec.cpy(),constvec.cpt());
        }
        iplink_t objLink;
        if(collectionSgKey == 0) {
          const xAOD::IParticleContainer* ipc =
            static_cast<const xAOD::IParticleContainer*>(obj->container());
          objLink = iplink_t(*ipc, obj->index());
        } else {
          objLink = iplink_t(collectionSgKey, obj->index());
        }
        uniqueLinks.push_back( objLink );
        uniqueWeights.push_back( 1. );
      }
    }
    ATH_MSG_DEBUG("Built met term " << met->name() << ", with magnitude " << met->met());
    return StatusCode::SUCCESS;
  }
 
  StatusCode METMaker::rebuildJetMET(const std::string& metJetKey,
                                     const std::string& softKey,
                                     xAOD::MissingETContainer* metCont,
                                     const xAOD::JetContainer* jets,
                                     const xAOD::MissingETContainer* metCoreCont,
                                     xAOD::MissingETAssociationHelper& helper,
                                     bool doJetJVT) const
  {
    ATH_MSG_VERBOSE("Rebuild jet term: " << metJetKey << " and soft term: " << softKey);
 
    MissingET* metJet = nullptr;
    if( fillMET(metJet,metCont, metJetKey, MissingETBase::Source::jet()) != StatusCode::SUCCESS) {
      ATH_MSG_ERROR("failed to fill MET term \"" << metJetKey << "\"");
      return StatusCode::FAILURE;
    }
 
    const MissingET *coreSoftClus(nullptr), *coreSoftTrk(nullptr);
    MissingET *metSoftClus(nullptr), *metSoftTrk(nullptr);
 
    const MissingET* coreSoft = (*metCoreCont)[softKey+"Core"];
    if(!coreSoft) {
      ATH_MSG_WARNING("Invalid soft term key supplied: " << softKey);
      return StatusCode::FAILURE;
    }
    if(MissingETBase::Source::isTrackTerm(coreSoft->source())) {
      coreSoftTrk = coreSoft;
 
      metSoftTrk = nullptr;
      if( fillMET(metSoftTrk,metCont, softKey , coreSoftTrk->source() ) != StatusCode::SUCCESS) {
        ATH_MSG_ERROR("failed to fill MET term \"" << softKey << "\"");
        return StatusCode::FAILURE;
      }
    } else {
      coreSoftClus = coreSoft;
 
      metSoftClus = nullptr;
      if( fillMET(metSoftClus, metCont, softKey , coreSoftClus->source() ) != StatusCode::SUCCESS) {
        ATH_MSG_ERROR("failed to fill MET term \"" << softKey << "\"");
        return StatusCode::FAILURE;
      }
    }
 
    return rebuildJetMET(metJet, jets, helper,
                         metSoftClus, coreSoftClus,
                         metSoftTrk,  coreSoftTrk,
                         doJetJVT);
  }
 
  StatusCode METMaker::rebuildTrackMET(const std::string& metJetKey,
                                       const std::string& softKey,
                                       xAOD::MissingETContainer* metCont,
                                       const xAOD::JetContainer* jets,
                                       const xAOD::MissingETContainer* metCoreCont,
                                       xAOD::MissingETAssociationHelper& helper,
                                       bool doJetJVT) const
  {
    ATH_MSG_VERBOSE("Rebuild jet term: " << metJetKey << " and soft term: " << softKey);
 
    MissingET* metJet = nullptr;
    if( fillMET(metJet , metCont,  metJetKey  , MissingETBase::Source::jet() | MissingETBase::Source::track() ) != StatusCode::SUCCESS) {
      ATH_MSG_ERROR("failed to fill MET term \"" << metJetKey << "\"");
      return StatusCode::FAILURE;
    }
 
    const MissingET *coreSoftTrk(nullptr);
    MissingET *metSoftTrk(nullptr);
 
    const MissingET* coreSoft = (*metCoreCont)[softKey+"Core"];
    if(!coreSoft) {
      ATH_MSG_WARNING("Invalid soft term key supplied: " << softKey);
      return StatusCode::FAILURE;
    }
    coreSoftTrk = coreSoft;
 
    metSoftTrk = nullptr;
    if( fillMET(metSoftTrk , metCont, softKey  , coreSoftTrk->source()) != StatusCode::SUCCESS) {
      ATH_MSG_ERROR("failed to fill MET term \"" << softKey << "\"");
      return StatusCode::FAILURE;
    }
 
    return rebuildTrackMET(metJet, jets, helper,
                           metSoftTrk,  coreSoftTrk,
                           doJetJVT);
  }
 
  StatusCode METMaker::rebuildJetMET(const std::string& metJetKey,
                                     const std::string& softClusKey,
                                     const std::string& softTrkKey,
                                     xAOD::MissingETContainer* metCont,
                                     const xAOD::JetContainer* jets,
                                     const xAOD::MissingETContainer* metCoreCont,
                                     xAOD::MissingETAssociationHelper& helper,
                                     bool doJetJVT) const
  {
 
    ATH_MSG_VERBOSE("Create Jet MET " << metJetKey);
    MissingET* metJet = nullptr;
    if( fillMET(metJet , metCont ,metJetKey , MissingETBase::Source::jet()) != StatusCode::SUCCESS) {
      ATH_MSG_ERROR("failed to fill MET term \"" << metJetKey << "\"");
      return StatusCode::FAILURE;
    }
    ATH_MSG_VERBOSE("Create SoftClus MET " << softClusKey);
    const MissingET* coreSoftClus = (*metCoreCont)[softClusKey+"Core"];
    ATH_MSG_VERBOSE("Create SoftTrk MET " << softTrkKey);
    const MissingET* coreSoftTrk = (*metCoreCont)[softTrkKey+"Core"];
    if(!coreSoftClus) {
      ATH_MSG_WARNING("Invalid cluster soft term key supplied: " << softClusKey);
      return StatusCode::FAILURE;
    }
    if(!coreSoftTrk) {
      ATH_MSG_WARNING("Invalid track soft term key supplied: " << softTrkKey);
      return StatusCode::FAILURE;
    }
    MissingET* metSoftClus = nullptr;
    if( fillMET(metSoftClus, metCont, softClusKey,  coreSoftClus->source()) != StatusCode::SUCCESS) {
      ATH_MSG_ERROR("failed to fill MET term \"" << softClusKey << "\"");
      return StatusCode::FAILURE;
    }
 
    MissingET* metSoftTrk = nullptr;
    if( fillMET(metSoftTrk, metCont, softTrkKey,  coreSoftTrk->source()) != StatusCode::SUCCESS) {
      ATH_MSG_ERROR("failed to fill MET term \"" << softTrkKey << "\"");
      return StatusCode::FAILURE;
    }
 
    return rebuildJetMET(metJet, jets, helper,
                         metSoftClus, coreSoftClus,
                         metSoftTrk, coreSoftTrk,
                         doJetJVT);
  }
 
  StatusCode METMaker::rebuildJetMET(xAOD::MissingET* metJet,
                                     const xAOD::JetContainer* jets,
                                     xAOD::MissingETAssociationHelper& helper,
                                     xAOD::MissingET* metSoftClus,
                                     const xAOD::MissingET* coreSoftClus,
                                     xAOD::MissingET* metSoftTrk,
                                     const xAOD::MissingET* coreSoftTrk,
                                     bool doJetJVT,
                                     bool tracksForHardJets,
                                     std::vector<const xAOD::IParticle*>* softConst) const {
    if(!metJet || !jets) {
      ATH_MSG_ERROR("Invalid pointer supplied for "
                      << "MET (" << metJet << ") or "
                      << "jet collection (" << jets << ").");
      return StatusCode::FAILURE;
    }
    const xAOD::MissingETAssociationMap* map = helper.map();
    if(!map){
      ATH_MSG_ERROR("MET Association Helper isn't associated with a MissingETAssociationMap!");
      return StatusCode::FAILURE;
    }
    if(softConst && m_trkseltool.empty() && !m_doPFlow && !m_doSoftTruth) {
      ATH_MSG_WARNING( "Requested soft track element links, but no track selection tool supplied.");
    }
    const xAOD::Vertex *pv = softConst?getPV():nullptr;
 
    if(map->empty()) {
      ATH_MSG_WARNING("Incomplete association map received. Cannot rebuild MET.");
      ATH_MSG_WARNING("Note: METMaker should only be run on events containing at least one PV");
      return StatusCode::SUCCESS;
    }
 
    if(doJetJVT && m_JvtWP == "None"){
      ATH_MSG_WARNING("rebuildJetMET requested JVT, which is inconsistent with jet selection " << m_jetSelection << ". Ignoring JVT.");
      doJetJVT = false;
    }
 
    ATH_MSG_VERBOSE("Building MET jet term " << metJet->name());
    if(!metSoftClus && !metSoftTrk) {
      ATH_MSG_WARNING("Neither soft cluster nor soft track term has been supplied!");
      return StatusCode::SUCCESS;
    }
    static const SG::AuxElement::ConstAccessor<std::vector<ElementLink<IParticleContainer> > > acc_softConst("softConstituents");
    if(metSoftClus) {
      dec_constitObjLinks(*metSoftClus) = std::vector<iplink_t>(0);
      if(!coreSoftClus) {
        ATH_MSG_ERROR("Soft cluster term provided without a core term!");
        return StatusCode::FAILURE;
      }
      ATH_MSG_VERBOSE("Building MET soft cluster term " << metSoftClus->name());
      ATH_MSG_VERBOSE("Core soft cluster mpx " << coreSoftClus->mpx()
                      << ", mpy " << coreSoftClus->mpy()
                      << " sumet " << coreSoftClus->sumet());
      *metSoftClus += *coreSoftClus;
      // Fill a vector with the soft constituents, if one was provided.
      // For now, only setting up to work with those corresponding to the jet constituents.
      // Can expand if needed.
      if(softConst && acc_softConst.isAvailable(*coreSoftClus)) {
        for(const auto& constit : acc_softConst(*coreSoftClus)) {
          softConst->push_back(*constit);
        }
        ATH_MSG_DEBUG(softConst->size() << " soft constituents from core term");
      }
    }
    if(metSoftTrk) {
      dec_constitObjLinks(*metSoftTrk) = std::vector<iplink_t>(0);
      if(!coreSoftTrk) {
        ATH_MSG_ERROR("Soft track term provided without a core term!");
        return StatusCode::FAILURE;
      }
      ATH_MSG_VERBOSE("Building MET soft track term " << metSoftTrk->name());
      ATH_MSG_VERBOSE("Core soft track mpx " << coreSoftTrk->mpx()
                      << ", mpy " << coreSoftTrk->mpy()
                      << " sumet " << coreSoftTrk->sumet());
      *metSoftTrk += *coreSoftTrk;
      if(softConst && acc_softConst.isAvailable(*coreSoftTrk) && !m_doPFlow && !m_doSoftTruth) {
        for(const auto& constit : acc_softConst(*coreSoftTrk)) {
          softConst->push_back(*constit);
        }
        ATH_MSG_DEBUG(softConst->size() << " soft constituents from trk core term");
      }
    }
 
    dec_constitObjLinks(*metJet) = std::vector<iplink_t>(0);
    dec_constitObjWeights(*metJet) = std::vector<float>(0);
    std::vector<iplink_t>& uniqueLinks = dec_constitObjLinks(*metJet);
    std::vector<float>& uniqueWeights = dec_constitObjWeights(*metJet);
    uniqueLinks.reserve(jets->size());
    uniqueWeights.reserve(jets->size());
    std::vector<iplink_t> softJetLinks;
    std::vector<float> softJetWeights;
    bool originalInputs = jets->empty() ? false : !acc_originalObject.isAvailable(*jets->front());
 
    // Get the hashed key of this jet, if we can. Though his only works if
    //   1. the container is an owning container, and not just a view;
    //   2. the container is in the event store already.
    // Since we will be creating ElementLink-s to these jets later on in the
    // code, and it should work in AnalysisBase, only the first one of these
    // is checked. Since the code can not work otherwise.
    SG::sgkey_t jetsSgKey = 0;
    if(jets->ownPolicy() == SG::OWN_ELEMENTS) {
      jetsSgKey = getKey(jets);
      if(jetsSgKey == 0) {
        ATH_MSG_ERROR("Could not find the jets with pointer: " << jets);
        return StatusCode::FAILURE;
      }
    }
 
    for(const xAOD::Jet* jet : *jets) {
      const MissingETAssociation* assoc = nullptr;
      if(originalInputs) {
        assoc = MissingETComposition::getAssociation(map,jet);
      } else {
        const IParticle* orig = *acc_originalObject(*jet);
        assoc = MissingETComposition::getAssociation(map,static_cast<const xAOD::Jet*>(orig));
      }
      if(!assoc || assoc->isMisc()){
        ATH_MSG_WARNING( "Jet without association found!" );
        continue;
      }
 
      if(m_skipSystematicJetSelection) {
        // retrieve nominal calibrated jet
        if (acc_nominalObject.isAvailable(*jet)){
          ATH_MSG_VERBOSE( "Jet pt before nominal replacement = " << jet->pt());
          jet = static_cast<const xAOD::Jet*>(*acc_nominalObject(*jet));
          
        }
        else
          ATH_MSG_ERROR("No nominal calibrated jet available for jet " << jet->index() << ". Cannot simplify overlap removal!");
      }
      ATH_MSG_VERBOSE( "Jet pt = " << jet->pt());
 
      bool selected = (std::abs(jet->eta())<m_JetEtaForw && jet->pt()>m_CenJetPtCut) || (std::abs(jet->eta())>=m_JetEtaForw && jet->pt()>m_FwdJetPtCut );
      bool JVT_reject(false);
      bool isMuFSRJet(false);
 
      // Apply a cut on the maximum jet eta. This restricts jets to those with calibration. Excluding more forward jets was found to have a minimal impact on the MET in Zee events
      if (m_JetEtaMax > 0.0 && std::abs(jet->eta()) > m_JetEtaMax)
        JVT_reject = true;
 
      if(doJetJVT) {
        // intrinsically checks that is within range to apply Jvt requirement
        JVT_reject  = !bool(m_JvtTool->accept(jet));
        ATH_MSG_VERBOSE("Jet " << (JVT_reject ? "fails" : "passes") <<" JVT selection");
      }
 
      // if defined apply additional jet criterium
      if (m_acc_jetRejectionDec && (*m_acc_jetRejectionDec)(*jet)==0) JVT_reject = true;
      bool hardJet(false);
      MissingETBase::Types::constvec_t calvec = assoc->overlapCalVec(helper);
      bool caloverlap = false;
      caloverlap = calvec.ce()>0;
      ATH_MSG_DEBUG("Jet " << jet->index() << " is " << ( caloverlap ? "" : "non-") << "overlapping");
 
      if(m_veryGreedyPhotons && caloverlap) {
        for(const auto& object : assoc->objects()) {
          // Correctly handle this jet if we're using very greedy photons
          if (object && object->type() == xAOD::Type::Photon) hardJet = true;
        }
      }
 
      xAOD::JetFourMom_t constjet;
      double constSF(1);
      if(m_jetConstitScaleMom.empty() && assoc->hasAlternateConstVec()){
        constjet = assoc->getAlternateConstVec();
      } else {
        constjet = jet->jetP4(m_jetConstitScaleMom);//grab a constituent scale added by the JetMomentTool/JetConstitFourMomTool.cxx
        double denom = (assoc->hasAlternateConstVec() ? assoc->getAlternateConstVec() : jet->jetP4("JetConstitScaleMomentum")).E();
        constSF = denom>1e-9 ? constjet.E()/denom : 0.;
        ATH_MSG_VERBOSE("Scale const jet by factor " << constSF);
        calvec *= constSF;
      }
      double jpx = constjet.Px();
      double jpy = constjet.Py();
      double jpt = constjet.Pt();
      double opx = jpx - calvec.cpx();
      double opy = jpy - calvec.cpy();
 
      MissingET* met_muonEloss(nullptr);
      if(m_muEloss || m_doSetMuonJetEMScale) {
        // Get a term to hold the Eloss corrections
        MissingETContainer* metCont = static_cast<MissingETContainer*>(metJet->container());
        met_muonEloss = (*metCont)["MuonEloss"];
        if(!met_muonEloss) {
          ATH_MSG_WARNING("Attempted to apply muon Eloss correction, but corresponding MET term does not exist!");
          return StatusCode::FAILURE;
        }
      }
 
      float total_eloss(0);
      MissingETBase::Types::bitmask_t muons_selflags(0);
      std::vector<const xAOD::Muon*> muons_in_jet;
      std::vector<const xAOD::Electron*> electrons_in_jet;
      bool passJetForEl=false;
      if(m_useGhostMuons) { // for backwards-compatibility
        if(!acc_ghostMuons.isAvailable(*jet)){
          ATH_MSG_ERROR("Ghost muons requested but not found!");
          return StatusCode::FAILURE;
        }
        for(const auto& el : acc_ghostMuons(*jet)) {
          if(!el.isValid()){
            ATH_MSG_ERROR("Invalid element link to ghost muon! Quitting.");
            return StatusCode::FAILURE;
          }
          muons_in_jet.push_back(static_cast<const xAOD::Muon*>(*el));
        }
      }
      for(const auto& obj : assoc->objects()) {
        if(!obj) continue;
        if(obj->type()==xAOD::Type::Muon && !m_useGhostMuons) {
          const xAOD::Muon* mu_test(static_cast<const xAOD::Muon*>(obj));
          ATH_MSG_VERBOSE("Muon " << mu_test->index() << " found in jet " << jet->index());
          if((m_doRemoveMuonJets || m_doSetMuonJetEMScale)) {
            if(acc_originalObject.isAvailable(*mu_test)) mu_test = static_cast<const xAOD::Muon*>(*acc_originalObject(*mu_test));
            if(MissingETComposition::objSelected(helper,mu_test)) { //
              muons_in_jet.push_back(mu_test);
              ATH_MSG_VERBOSE("Muon is selected by MET.");
            }
          }
        } else if(obj->type()==xAOD::Type::Electron && m_doRemoveElecTrks) {
          const xAOD::Electron* el_test(static_cast<const xAOD::Electron*>(obj));
          ATH_MSG_VERBOSE("Electron " << el_test->index() << " found in jet " << jet->index());
          if(acc_originalObject.isAvailable(*el_test)) el_test = static_cast<const xAOD::Electron*>(*acc_originalObject(*el_test));
          if(helper.objSelected(assoc,el_test)){
            if(el_test->pt()>90.0e3) { // only worry about high-pt electrons?
              electrons_in_jet.push_back(el_test);
              ATH_MSG_VERBOSE("High-pt electron is selected by MET.");
            }
          }
        }
      }
      if(m_doRemoveElecTrks) {
        MissingETBase::Types::constvec_t initialTrkMom = assoc->jetTrkVec();
        float jet_ORtrk_sumpt = assoc->overlapTrkVec(helper).sumpt();
        float jet_all_trk_pt =  initialTrkMom.sumpt();
        float jet_unique_trk_pt = jet_all_trk_pt - jet_ORtrk_sumpt;
        MissingETBase::Types::constvec_t el_calvec;
        MissingETBase::Types::constvec_t el_trkvec;
        for(const auto& elec : electrons_in_jet) {
            el_calvec += assoc->calVec(elec);
            el_trkvec += assoc->trkVec(elec);
        }
        float el_cal_pt = el_calvec.cpt();
        float el_trk_pt = el_trkvec.cpt();
        ATH_MSG_VERBOSE("Elec trk: " << el_trk_pt
                        << " jetalltrk: " << jet_all_trk_pt
                        << " jetORtrk: " << jet_ORtrk_sumpt
                        << " electrk-jetORtrk: " << (el_trk_pt-jet_ORtrk_sumpt)
                        << " elec cal: " << el_cal_pt
                        << " jetalltrk-electrk: " << (jet_all_trk_pt-el_trk_pt)
                        << " jetalltrk-jetORtrk: " << (jet_all_trk_pt-jet_ORtrk_sumpt) );
        // Want to use the jet calo measurement if we had at least one electron
        // and the jet has a lot of residual track pt
        // Is the cut appropriate?
        if(el_trk_pt>1e-9 && jet_unique_trk_pt>10.0e3) passJetForEl=true;
      } // end ele-track removal
 
      for(const xAOD::Muon* mu_in_jet : muons_in_jet) {
        if (!mu_in_jet) continue;
        float mu_Eloss = acc_Eloss(*mu_in_jet);
 
        if(!JVT_reject) {
          if (m_doRemoveMuonJets) {
            // need to investigate how this is affected by the recording of muon clusters in the map
            float mu_id_pt = mu_in_jet->trackParticle(xAOD::Muon::InnerDetectorTrackParticle) ? mu_in_jet->trackParticle(xAOD::Muon::InnerDetectorTrackParticle)->pt() : 0.;
            float jet_trk_sumpt = acc_trksumpt.isAvailable(*jet) && this->getPV() ? acc_trksumpt(*jet)[this->getPV()->index()] : 0.;
 
            // missed the muon, so we should add it back
            if(0.9999*mu_id_pt>jet_trk_sumpt)
              jet_trk_sumpt+=mu_id_pt;
            float jet_trk_N = acc_trkN.isAvailable(*jet) && this->getPV() ? acc_trkN(*jet)[this->getPV()->index()] : 0.;
            ATH_MSG_VERBOSE("Muon has ID pt " << mu_id_pt);
            ATH_MSG_VERBOSE("Jet has pt " << jet->pt() << ", trk sumpt " << jet_trk_sumpt << ", trk N " << jet_trk_N);
            bool jet_from_muon = mu_id_pt>1e-9 && jet_trk_sumpt>1e-9 && (jet->pt()/mu_id_pt < m_muIDPTJetPtRatioMuOlap && mu_id_pt/jet_trk_sumpt>m_jetTrkPtMuPt) && jet_trk_N<m_jetTrkNMuOlap;
            if(jet_from_muon) {
              ATH_MSG_VERBOSE("Jet is from muon -- remove.");
              JVT_reject = true;
            }
          }
 
          if (m_doSetMuonJetEMScale) {
            // need to investigate how this is affected by the recording of muon clusters in the map
            float mu_id_pt = mu_in_jet->trackParticle(xAOD::Muon::InnerDetectorTrackParticle) ? mu_in_jet->trackParticle(xAOD::Muon::InnerDetectorTrackParticle)->pt() : 0.;
            float jet_trk_sumpt = acc_trksumpt.isAvailable(*jet) && this->getPV() ? acc_trksumpt(*jet)[this->getPV()->index()] : 0.;
            // missed the muon, so we should add it back
            if(0.9999*mu_id_pt>jet_trk_sumpt)
              jet_trk_sumpt+=mu_id_pt;
            float jet_trk_N = acc_trkN.isAvailable(*jet) && this->getPV() ? acc_trkN(*jet)[this->getPV()->index()] : 0.;
 
            float jet_psE = 0.;
            if (acc_psf.isAvailable(*jet)){
              jet_psE = acc_psf(*jet);
            } else if (acc_sampleE.isAvailable(*jet)){
              jet_psE = acc_sampleE(*jet)[0] + acc_sampleE(*jet)[4];
            } else {
              ATH_MSG_ERROR("Jet PS fraction or sampling energy must be available to calculate MET with doSetMuonJetEMScale");
              return StatusCode::FAILURE;
            }
 
            bool jet_from_muon = jet_trk_sumpt>1e-9 && jet_trk_N<3 && mu_id_pt / jet_trk_sumpt > m_jetTrkPtMuPt && acc_emf(*jet)>m_jetEmfMuOlap && acc_width(*jet)<m_jetWidthMuOlap && jet_psE>m_jetPsEMuOlap;
            ATH_MSG_VERBOSE("Muon has ID pt " << mu_id_pt);
            ATH_MSG_VERBOSE("Jet has trk sumpt " << jet_trk_sumpt << ", trk N " << jet_trk_N << ", PS E " << jet_psE << ", width " << acc_width(*jet) << ", emfrac " << acc_emf(*jet));
 
            if(jet_from_muon) {
              ATH_MSG_VERBOSE("Jet is from muon -- set to EM scale and subtract Eloss.");
              // Using constjet now because we focus on AntiKt4EMTopo.
              // Probably not a massive difference to LC, but PF needs some consideration
              ATH_MSG_VERBOSE("Jet e: " << constjet.E() << ", mu Eloss: " << mu_Eloss);
              float elosscorr = mu_Eloss >= constjet.e() ? 0. : 1.-mu_Eloss/constjet.e();
              // Effectively, take the unique fraction of the jet times the eloss-corrected fraction
              // This might in some cases oversubtract, but should err on the side of undercounting the jet contribution
              opx *= elosscorr;
              opy *= elosscorr;
              ATH_MSG_VERBOSE(" Jet eloss factor " << elosscorr << ", final pt: " << sqrt(opx*opx+opy*opy));
              // Don't treat this jet normally. Instead, just add to the Eloss term
              isMuFSRJet = true;
            }
          }
        } // end muon-jet overlap-removal
 
        switch(mu_in_jet->energyLossType()) {
          using enum xAOD::Muon::EnergyLossType;
          case Parametrized:
          case MOP:
          case Tail:
          case FSRcandidate:
          case NotIsolated:
            // For now don't differentiate the behaviour
            // Remove the Eloss assuming the parameterised value
            // The correction is limited to the selected clusters
            total_eloss += mu_Eloss;
            muons_selflags |= (1<<assoc->findIndex(mu_in_jet));
        }
      }
      ATH_MSG_VERBOSE("Muon selection flags: " << muons_selflags);
      ATH_MSG_VERBOSE("Muon total eloss: " << total_eloss);
 
      MissingETBase::Types::constvec_t mu_calovec;
      // borrowed from overlapCalVec
      for(size_t iKey = 0; iKey < assoc->sizeCal(); iKey++) {
        bool selector = (muons_selflags & assoc->calkey()[iKey]);
        if(selector) mu_calovec += assoc->calVec(iKey);
        ATH_MSG_VERBOSE("This key: " << assoc->calkey()[iKey] << ", selector: " << selector);
      }
      ATH_MSG_VERBOSE("Mu calovec pt, no Eloss:   " << mu_calovec.cpt());
      if(m_muEloss) mu_calovec *= std::max<float>(0.,1-(total_eloss/mu_calovec.ce()));
      ATH_MSG_VERBOSE("Mu calovec pt, with Eloss: " << mu_calovec.cpt());
 
      // re-add calo components of muons beyond Eloss correction
      ATH_MSG_VERBOSE("Jet " << jet->index() << " const pT before OR " << jpt);
      ATH_MSG_VERBOSE("Jet " << jet->index() << " const pT after OR " << sqrt(opx*opx+opy*opy));
      opx += mu_calovec.cpx();
      opy += mu_calovec.cpy();
      double opt = sqrt( opx*opx+opy*opy );
      ATH_MSG_VERBOSE("Jet " << jet->index() << " const pT diff after OR readding muon clusters " << opt-jpt);
      double uniquefrac = 1. - (calvec.ce() - mu_calovec.ce()) / constjet.E();
      ATH_MSG_VERBOSE( "Jet constscale px, py, pt, E = " << jpx << ", " << jpy << ", " << jpt << ", " << constjet.E() );
      ATH_MSG_VERBOSE( "Jet overlap E = " << calvec.ce() - mu_calovec.ce() );
      ATH_MSG_VERBOSE( "Jet OR px, py, pt, E = " << opx << ", " << opy << ", " << opt << ", " << constjet.E() - calvec.ce() );
 
      if(isMuFSRJet) {
        if(!met_muonEloss){
          ATH_MSG_ERROR("Attempted to apply muon Eloss correction, but corresponding MET term does not exist!");
          return StatusCode::FAILURE;
        }
        met_muonEloss->add(opx,opy,opt);
        continue;
      }
 
      if(selected && !JVT_reject) {
        if(!caloverlap) {
          // add jet full four-vector
          hardJet = true;
          if (!tracksForHardJets) {
            if(m_doConstJet)
              metJet->add(jpx,jpy,jpt);
            else
              *metJet += jet;
          }
        }
        else if((uniquefrac>m_jetMinEfrac || passJetForEl) && opt>m_jetMinWeightedPt){
          // add jet corrected for overlaps if sufficient unique fraction
          hardJet = true;
          if(!tracksForHardJets) {
            if(m_jetCorrectPhi) {
              if (m_doConstJet)
                metJet->add(opx,opy,opt);
              else {
                double jesF = jet->pt() / jpt;
                metJet->add(opx*jesF,opy*jesF,opt*jesF);
              }
            } else {
              if (m_doConstJet)
                metJet->add(uniquefrac*jpx,uniquefrac*jpy,uniquefrac*jpt);
              else{
                if(passJetForEl && m_doRemoveElecTrksEM)
                  metJet->add(opx,opy,opt);
                else
                  metJet->add(uniquefrac*jet->px(),uniquefrac*jet->py(),uniquefrac*jet->pt());
              }
            }
          }
        }
      }  // hard jet selection
 
      // Create the appropriate ElementLink for this jet just the once.
      iplink_t jetLink;
      if(jetsSgKey == 0) {
        const xAOD::IParticleContainer* ipc =
          static_cast<const xAOD::IParticleContainer*>(jet->container());
        jetLink = iplink_t(*ipc, jet->index());
      } else {
        jetLink = iplink_t(jetsSgKey, jet->index());
      }
 
      if(hardJet){
        ATH_MSG_VERBOSE("Jet added at full scale");
        uniqueLinks.push_back( jetLink );
        uniqueWeights.push_back( uniquefrac );
      } else {
        if(metSoftClus && !JVT_reject) {
          // add fractional contribution
          ATH_MSG_VERBOSE("Jet added at const scale");
          if (std::abs(jet->eta())<2.5 || !(coreSoftClus->source()&MissingETBase::Source::Region::Central)) {
            softJetLinks.push_back( jetLink );
            softJetWeights.push_back( uniquefrac );
            metSoftClus->add(opx,opy,opt);
          }
 
          // Fill a vector with the soft constituents, if one was provided.
          // For now, only setting up to work with those corresponding to the jet constituents.
          // Can expand if needed.
          // This ignores overlap removal.
          //
          if(softConst) {
            for(size_t iConst=0; iConst<jet->numConstituents(); ++iConst) {
              const IParticle* constit = jet->rawConstituent(iConst);
              softConst->push_back(constit);
            }
          }
        }
      } // hard jet or CST
 
      if(!metSoftTrk || (hardJet && !tracksForHardJets)) continue;
 
      // use jet tracks
      // remove any tracks already used by other objects
      MissingETBase::Types::constvec_t trkvec = assoc->overlapTrkVec(helper);
      MissingETBase::Types::constvec_t jettrkvec = assoc->jetTrkVec();
      if(jettrkvec.ce()>1e-9) {
        jpx = jettrkvec.cpx();
        jpy = jettrkvec.cpy();
        jpt = jettrkvec.sumpt();
        jettrkvec -= trkvec;
        opx = jettrkvec.cpx();
        opy = jettrkvec.cpy();
        opt = jettrkvec.sumpt();
        ATH_MSG_VERBOSE( "Jet track px, py, sumpt = " << jpx << ", " << jpy << ", " << jpt );
        ATH_MSG_VERBOSE( "Jet OR px, py, sumpt = " << opx << ", " << opy << ", " << opt );
      } else {
        opx = opy = opt = 0;
        ATH_MSG_VERBOSE( "This jet has no associated tracks" );
      }
      if (hardJet) metJet->add(opx,opy,opt);
      else if (std::abs(jet->eta())<2.5 || !(coreSoftTrk->source()&MissingETBase::Source::Region::Central)) {
        metSoftTrk->add(opx,opy,opt);
        // Don't need to add if already done for softclus.
        if(!metSoftClus) {
          softJetLinks.push_back( jetLink );
          softJetWeights.push_back( uniquefrac );
        }
 
        // Fill a vector with the soft constituents, if one was provided.
        // For now, only setting up to work with those corresponding to the jet constituents.
        // Can expand if needed.
        // This ignores overlap removal.
        //
        if(softConst && !m_doPFlow && !m_doSoftTruth) {
          std::vector<const IParticle*> jettracks;
          jet->getAssociatedObjects<IParticle>(xAOD::JetAttribute::GhostTrack,jettracks);
          for(size_t iConst=0; iConst<jettracks.size(); ++iConst) {
            const TrackParticle* pTrk = static_cast<const TrackParticle*>(jettracks[iConst]);
            if (acceptTrack(pTrk,pv)) softConst->push_back(pTrk);
          }
        }
      }
    } // jet loop
 
    ATH_MSG_DEBUG("Number of selected jets: " << dec_constitObjLinks(*metJet).size());
 
    if(metSoftTrk) {
      dec_constitObjLinks(*metSoftTrk) = softJetLinks;
      ATH_MSG_DEBUG("Number of softtrk jets: " << dec_constitObjLinks(*metSoftTrk).size());
    }
 
    if(metSoftClus) {
      dec_constitObjLinks(*metSoftClus) = softJetLinks;
      ATH_MSG_DEBUG("Number of softclus jets: " << dec_constitObjLinks(*metSoftClus).size());
    }
 
    if(softConst) ATH_MSG_DEBUG(softConst->size() << " soft constituents from core term + jets");
 
    const MissingETAssociation* assoc = map->getMiscAssociation();
    if(!assoc) return StatusCode::SUCCESS;
 
    if(metSoftTrk) {
      // supplement track term with any tracks associated to isolated muons
      // these are recorded in the misc association
      MissingETBase::Types::constvec_t trkvec = assoc->overlapTrkVec(helper);
      double opx = trkvec.cpx();
      double opy = trkvec.cpy();
      double osumpt = trkvec.sumpt();
      ATH_MSG_VERBOSE( "Misc track px, py, sumpt = " << opx << ", " << opy << ", " << osumpt );
      metSoftTrk->add(opx,opy,osumpt);
      ATH_MSG_VERBOSE("Final soft track mpx " << metSoftTrk->mpx()
                      << ", mpy " << metSoftTrk->mpy()
                      << " sumet " << metSoftTrk->sumet());
    }
 
    if(metSoftClus) {
      // supplement cluster term with any clusters associated to isolated e/gamma
      // these are recorded in the misc association
      float total_eloss(0.);
      MissingETBase::Types::bitmask_t muons_selflags(0);
      MissingETBase::Types::constvec_t calvec = assoc->overlapCalVec(helper);
      double opx = calvec.cpx();
      double opy = calvec.cpy();
      double osumpt = calvec.sumpt();
      for(const auto& obj : assoc->objects()) {
        if (!obj || obj->type() != xAOD::Type::Muon) continue;
        const xAOD::Muon* mu_test(static_cast<const xAOD::Muon*>(obj));
        if(acc_originalObject.isAvailable(*mu_test)) mu_test = static_cast<const xAOD::Muon*>(*acc_originalObject(*mu_test));
        if(MissingETComposition::objSelected(helper,mu_test)) { //
          float mu_Eloss = acc_Eloss(*mu_test);
          switch(mu_test->energyLossType()) {
          using enum xAOD::Muon::EnergyLossType;
          case Parametrized:
          case MOP:
          case Tail:
          case FSRcandidate:
          case NotIsolated:
            // For now don't differentiate the behaviour
            // Remove the Eloss assuming the parameterised value
            // The correction is limited to the selected clusters
            total_eloss += mu_Eloss;
            muons_selflags |= (1<<assoc->findIndex(mu_test));
          }
          ATH_MSG_VERBOSE("Mu index " << mu_test->index());
        }
      }
      ATH_MSG_VERBOSE("Mu selection flags " << muons_selflags);
      ATH_MSG_VERBOSE("Mu total eloss " << total_eloss);
 
      MissingETBase::Types::constvec_t mu_calovec;
      // borrowed from overlapCalVec
      for(size_t iKey = 0; iKey < assoc->sizeCal(); iKey++) {
        bool selector = (muons_selflags & assoc->calkey()[iKey]);
        ATH_MSG_VERBOSE("This key: " << assoc->calkey()[iKey] << ", selector: " << selector
                        << " this calvec E: " << assoc->calVec(iKey).ce());
        if(selector) mu_calovec += assoc->calVec(iKey);
      }
      if(m_muEloss){
        mu_calovec *= std::max<float>(0.,1-(total_eloss/mu_calovec.ce()));
        opx += mu_calovec.cpx();
        opy += mu_calovec.cpy();
        osumpt += mu_calovec.sumpt();
      }
      ATH_MSG_VERBOSE("Mu cluster sumpt " << mu_calovec.sumpt());
 
      ATH_MSG_VERBOSE( "Misc cluster px, py, sumpt = " << opx << ", " << opy << ", " << osumpt );
      metSoftClus->add(opx,opy,osumpt);
      ATH_MSG_VERBOSE("Final soft cluster mpx " << metSoftClus->mpx()
                      << ", mpy " << metSoftClus->mpy()
                      << " sumet " << metSoftClus->sumet());
    }
 
    return StatusCode::SUCCESS;
  }
 
  StatusCode METMaker::rebuildTrackMET(xAOD::MissingET* metJet,
                                       const xAOD::JetContainer* jets,
                                       xAOD::MissingETAssociationHelper& helper,
                                       xAOD::MissingET* metSoftTrk,
                                       const xAOD::MissingET* coreSoftTrk,
                                       bool doJetJVT) const {
    return rebuildJetMET(metJet,jets,helper,nullptr,nullptr,metSoftTrk,coreSoftTrk,doJetJVT,true);
  }
 
  // **** Remove objects and any overlaps from MET calculation ****
  StatusCode METMaker::markInvisible(const xAOD::IParticleContainer* collection,
                                     xAOD::MissingETAssociationHelper& helper,
                                     xAOD::MissingETContainer* metCont) const
  {
    MissingET* met = nullptr;
    if( fillMET(met,metCont, "Invisibles" , invisSource) != StatusCode::SUCCESS) {
      ATH_MSG_ERROR("failed to fill MET term \"Invisibles\"");
      return StatusCode::FAILURE;
    }
    return rebuildMET(met,collection,helper,MissingETBase::UsageHandler::PhysicsObject);
  }
 
  bool METMaker::acceptTrack(const xAOD::TrackParticle* trk, const xAOD::Vertex* vx) const
  {
    return static_cast<bool>(m_trkseltool->accept( *trk, vx ));
  }
 
  const xAOD::Vertex* METMaker::getPV() const {
 
    SG::ReadHandle<xAOD::VertexContainer> h_PV(m_PVkey);
 
    if(!h_PV.isValid()) {
      ATH_MSG_WARNING("Unable to retrieve primary vertex container PrimaryVertices");
      return nullptr;
    }
    ATH_MSG_DEBUG("Successfully retrieved primary vertex container");
    if(h_PV->empty()) ATH_MSG_WARNING("Event has no primary vertices!");
    for(const xAOD::Vertex* vx : *h_PV) {
      if(vx->vertexType()==xAOD::VxType::PriVtx) return vx;
    }
    return nullptr;
  }
 
} //> end namespace met