.. _program_listing_file_Root_TauSelector.cxx:

Program Listing for File TauSelector.cxx
========================================

|exhale_lsh| :ref:`Return to documentation for file <file_Root_TauSelector.cxx>` (``Root/TauSelector.cxx``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   /*************************************************
    *
    * Interface to TauAnalysisTools::TauSelectionTool
    *
    * F. Scutti (federico.scutti@cern.ch)
    * M. Milesi (marco.milesi@cern.ch)
    *
    ************************************************/
   
   // c++ include(s):
   #include <iostream>
   #include <typeinfo>
   #include <map>
   
   // EL include(s):
   #include <EventLoop/Job.h>
   #include <EventLoop/StatusCode.h>
   #include <EventLoop/Worker.h>
   
   // EDM include(s):
   #include "xAODCore/ShallowCopy.h"
   #include "AthContainers/ConstDataVector.h"
   #include "xAODEventInfo/EventInfo.h"
   #include "xAODTau/TauJetContainer.h"
   
   // package include(s):
   #include "xAODAnaHelpers/TauSelector.h"
   #include "xAODAnaHelpers/HelperClasses.h"
   #include "xAODAnaHelpers/HelperFunctions.h"
   // #include "PATCore/TAccept.h"
   // tool includes
   #include "TauAnalysisTools/TauSelectionTool.h"  
   #include "TriggerMatchingTool/MatchingTool.h"
   #include "TriggerMatchingTool/MatchFromCompositeTool.h"
   
   // ROOT include(s):
   #include "TFile.h"
   #include "TObjArray.h"
   #include "TObjString.h"
   
   // this is needed to distribute the algorithm to the workers
   ClassImp(TauSelector)
   
   
   TauSelector :: TauSelector () :
       Algorithm("TauSelector")
   {
   }
   
   TauSelector::~TauSelector() {}
   
   EL::StatusCode TauSelector :: setupJob (EL::Job& job)
   {
     // Here you put code that sets up the job on the submission object
     // so that it is ready to work with your algorithm, e.g. you can
     // request the D3PDReader service or add output files.  Any code you
     // put here could instead also go into the submission script.  The
     // sole advantage of putting it here is that it gets automatically
     // activated/deactivated when you add/remove the algorithm from your
     // job, which may or may not be of value to you.
   
     ANA_MSG_INFO( "Calling setupJob");
   
     job.useXAOD ();
     xAOD::Init( "TauSelector" ).ignore(); // call before opening first file
   
     return EL::StatusCode::SUCCESS;
   }
   
   
   
   EL::StatusCode TauSelector :: histInitialize ()
   {
     // Here you do everything that needs to be done at the very
     // beginning on each worker node, e.g. create histograms and output
     // trees.  This method gets called before any input files are
     // connected.
   
     ANA_MSG_INFO( "Calling histInitialize");
     ANA_CHECK( xAH::Algorithm::algInitialize());
   
     if ( this->numInstances() > 1 ) {
       m_isUsedBefore = true;
       ANA_MSG_INFO( "\t An algorithm of the same type has been already used " << numInstances() << " times" );
     }
   
     return EL::StatusCode::SUCCESS;
   }
   
   
   
   EL::StatusCode TauSelector :: fileExecute ()
   {
     // Here you do everything that needs to be done exactly once for every
     // single file, e.g. collect a list of all lumi-blocks processed
   
     ANA_MSG_INFO( "Calling fileExecute");
   
     return EL::StatusCode::SUCCESS;
   }
   
   
   
   EL::StatusCode TauSelector :: changeInput (bool /*firstFile*/)
   {
     // Here you do everything you need to do when we change input files,
     // e.g. resetting branch addresses on trees.  If you are using
     // D3PDReader or a similar service this method is not needed.
   
     ANA_MSG_INFO( "Calling changeInput");
   
     return EL::StatusCode::SUCCESS;
   }
   
   
   
   EL::StatusCode TauSelector :: initialize ()
   {
     // Here you do everything that you need to do after the first input
     // file has been connected and before the first event is processed,
     // e.g. create additional histograms based on which variables are
     // available in the input files.  You can also create all of your
     // histograms and trees in here, but be aware that this method
     // doesn't get called if no events are processed.  So any objects
     // you create here won't be available in the output if you have no
     // input events.
   
     ANA_MSG_INFO( "Initializing TauSelector Interface... ");
   
     // Let's see if the algorithm has been already used before:
     // if yes, will write object cutflow in a different histogram!
     //
     // This is the case when the selector algorithm is used for
     // preselecting objects, and then again for the final selection
     //
     ANA_MSG_INFO( "Algorithm name: " << m_name << " - of type " << m_className );
   
     if ( m_useCutFlow ) {
   
       // retrieve the file in which the cutflow hists are stored
       //
       TFile *file     = wk()->getOutputFile (m_cutFlowStreamName);
   
       // retrieve the event cutflows
       //
       m_cutflowHist  = (TH1D*)file->Get("cutflow");
       m_cutflowHistW = (TH1D*)file->Get("cutflow_weighted");
       m_cutflow_bin  = m_cutflowHist->GetXaxis()->FindBin(m_name.c_str());
       m_cutflowHistW->GetXaxis()->FindBin(m_name.c_str());
   
       // retrieve the object cutflow
       //
       m_tau_cutflowHist_1  = (TH1D*)file->Get("cutflow_taus_1");
   
       m_tau_cutflow_all                  = m_tau_cutflowHist_1->GetXaxis()->FindBin("all");
       m_tau_cutflow_selected             = m_tau_cutflowHist_1->GetXaxis()->FindBin("selected");
   
       if ( m_isUsedBefore ) {
         m_tau_cutflowHist_2 = (TH1D*)file->Get("cutflow_taus_2");
   
         m_tau_cutflow_all                  = m_tau_cutflowHist_2->GetXaxis()->FindBin("all");
         m_tau_cutflow_selected             = m_tau_cutflowHist_2->GetXaxis()->FindBin("selected");
       }
   
     }
   
     m_event = wk()->xaodEvent();
     m_store = wk()->xaodStore();
   
     ANA_MSG_INFO( "Number of events in file: " << m_event->getEntries() );
   
   
     m_outAuxContainerName     = m_outContainerName + "Aux."; // the period is very important!
   
     if ( m_inContainerName.empty() ){
       ANA_MSG_ERROR( "InputContainer is empty!");
       return EL::StatusCode::FAILURE;
     }
   
     m_numEvent      = 0;
     m_numObject     = 0;
     m_numEventPass  = 0;
     m_weightNumEventPass  = 0;
     m_numObjectPass = 0;
   
     // ********************************
     //
     // Initialise TauSelectionTool
     //
     // ********************************
   
     // IMPORTANT: if no working point is specified the one in this configuration will be used
     ANA_CHECK( m_tauSelTool_handle.setProperty("ConfigPath",PathResolverFindDataFile(m_ConfigPath).c_str()));
     if (!m_JetIDWP.empty()) {
       
       std::map <std::string, int> jetid_wp_map;
       
       jetid_wp_map["JETIDNONE"] = int(TauAnalysisTools::JETIDNONE);
       jetid_wp_map["JETIDRNNLOOSE"] = int(TauAnalysisTools::JETIDRNNLOOSE);
       jetid_wp_map["JETIDRNNMEDIUM"] = int(TauAnalysisTools::JETIDRNNMEDIUM);
       jetid_wp_map["JETIDRNNTIGHT"] = int(TauAnalysisTools::JETIDRNNTIGHT);
       
       if (jetid_wp_map.count(m_JetIDWP) != 0 ) {
         ANA_CHECK( m_tauSelTool_handle.setProperty("JetIDWP", jetid_wp_map[m_JetIDWP]));
       } else {
         ANA_MSG_ERROR( "Unknown requested tau JetIDWP " << m_JetIDWP);
         return EL::StatusCode::FAILURE; 
       }
     }
   
     if (!m_EleRNNWP.empty()) {
       
       std::map <std::string, int> elernn_wp_map;
       
       elernn_wp_map["ELEIDNONE"] = int(TauAnalysisTools::ELEIDNONE);
       elernn_wp_map["ELEIDRNNLOOSE"] = int(TauAnalysisTools::ELEIDRNNLOOSE);
       elernn_wp_map["ELEIDRNNMEDIUM"] = int(TauAnalysisTools::ELEIDRNNMEDIUM);
       elernn_wp_map["ELEIDRNNTIGHT"] = int(TauAnalysisTools::ELEIDRNNTIGHT);
       
       if (elernn_wp_map.count(m_EleRNNWP) != 0 ) {
         ANA_CHECK( m_tauSelTool_handle.setProperty("EleRNNWP", elernn_wp_map[m_EleRNNWP]));
       } else {
         ANA_MSG_ERROR( "Unknown requested tau EleRNNWP " << m_EleRNNWP);
         return EL::StatusCode::FAILURE; 
       }
     }
   
     ANA_CHECK( m_tauSelTool_handle.setProperty("EleIDWP", m_EleID));
   
     ANA_CHECK(m_tauSelTool_handle.retrieve());
     ANA_MSG_DEBUG("Retrieved tool: " << m_tauSelTool_handle);
   
     // **************************************
     //
     // Initialise Trig::MatchingTool
     //
     // **************************************
     if( !( m_singleTauTrigChains.empty() && m_diTauTrigChains.empty() ) ) {
   
       if( !isPHYS() ) {
         // Grab the TrigDecTool from the ToolStore
         if(!m_trigDecTool_handle.isUserConfigured()){
           ANA_MSG_FATAL("A configured " << m_trigDecTool_handle.typeAndName() << " must have been previously created! Are you creating one in xAH::BasicEventSelection?" );
           return EL::StatusCode::FAILURE;
         }
         ANA_CHECK( m_trigDecTool_handle.retrieve());
         ANA_MSG_DEBUG("Retrieved tool: " << m_trigDecTool_handle);
   
         ANA_CHECK( m_scoreTool.retrieve());
   
         //  everything went fine, let's initialise the tool!
         m_trigTauMatchTool_handle = asg::AnaToolHandle<Trig::IMatchingTool>("Trig::MatchingTool/MatchingTool");
         ANA_CHECK( m_trigTauMatchTool_handle.setProperty( "TrigDecisionTool", m_trigDecTool_handle ));
         ANA_CHECK( m_trigTauMatchTool_handle.setProperty( "ScoringTool", m_scoreTool ));
         ANA_CHECK( m_trigTauMatchTool_handle.setProperty("OutputLevel", msg().level() ));
         ANA_CHECK( m_trigTauMatchTool_handle.retrieve());
         ANA_MSG_DEBUG("Retrieved tool: " << m_trigTauMatchTool_handle);
       } else {
         m_trigTauMatchTool_handle = asg::AnaToolHandle<Trig::IMatchingTool>("Trig::MatchFromCompositeTool/MatchFromCompositeTool");
         ANA_CHECK( m_trigTauMatchTool_handle.setProperty("OutputLevel", msg().level() ));
         ANA_CHECK( m_trigTauMatchTool_handle.retrieve());
         ANA_MSG_DEBUG("Retrieved tool: " << m_trigTauMatchTool_handle);
       }
   
     } else {
   
       m_doTrigMatch = false;
   
       ANA_MSG_WARNING("***********************************************************");
       ANA_MSG_WARNING( "Will not perform any tau trigger matching at this stage b/c :");
       ANA_MSG_WARNING("\t -) could not find the TrigDecisionTool in asg::ToolStore");
       ANA_MSG_WARNING("\t AND/OR");
       ANA_MSG_WARNING("\t -) all input HLT trigger chain lists are empty");
       ANA_MSG_WARNING("However, if you really didn't want to do the matching now, it's all good!");
       ANA_MSG_WARNING("***********************************************************");
     }
   
     ANA_MSG_INFO( "TauSelector Interface succesfully initialized!" );
   
     return EL::StatusCode::SUCCESS;
   }
   
   EL::StatusCode TauSelector :: execute ()
   {
     // Here you do everything that needs to be done on every single
     // events, e.g. read input variables, apply cuts, and fill
     // histograms and trees.  This is where most of your actual analysis
     // code will go.
   
     ANA_MSG_DEBUG( "Applying Tau Selection..." );
   
     const xAOD::EventInfo* eventInfo(nullptr);
     ANA_CHECK( HelperFunctions::retrieve(eventInfo, m_eventInfoContainerName, m_event, m_store, msg()) );
   
     // MC event weight
     //
     float mcEvtWeight(1.0);
     static SG::AuxElement::Accessor< float > mcEvtWeightAcc("mcEventWeight");
     if ( ! mcEvtWeightAcc.isAvailable( *eventInfo ) ) {
       ANA_MSG_ERROR( "mcEventWeight is not available as decoration! Aborting" );
       return EL::StatusCode::FAILURE;
     }
     mcEvtWeight = mcEvtWeightAcc( *eventInfo );
   
     m_numEvent++;
   
     // QUESTION: why this must be done in execute(), and does not work in initialize()?
     //
     if ( m_numEvent == 1 && m_trigTauMatchTool_handle.isInitialized() ) {
   
       // parse input tau trigger chain list, split by comma and fill vector
       //
       std::string singletau_trig;
       std::istringstream ss_singletau_trig(m_singleTauTrigChains);
   
       while ( std::getline(ss_singletau_trig, singletau_trig, ',') ) {
       m_singleTauTrigChainsList.push_back(singletau_trig);
       }
   
       std::string ditau_trig;
       std::istringstream ss_ditau_trig(m_diTauTrigChains);
   
       while ( std::getline(ss_ditau_trig, ditau_trig, ',') ) {
       m_diTauTrigChainsList.push_back(ditau_trig);
       }
   
       ANA_MSG_INFO( "Input single tau trigger chains that will be considered for matching:\n");
       for ( auto const &chain : m_singleTauTrigChainsList ) { ANA_MSG_INFO( "\t " << chain); }
       ANA_MSG_INFO( "\n");
   
       ANA_MSG_INFO( "Input di-tau trigger chains that will be considered for matching:\n");
       for ( auto const &chain : m_diTauTrigChainsList ) { ANA_MSG_INFO( "\t " << chain); }
       ANA_MSG_INFO( "\n");
   
     }
   
     // did any collection pass the cuts?
     //
     bool eventPass(false);
     bool countPass(true); // for cutflow: count for the 1st collection in the syst container - could be better as should only count for the nominal
     const xAOD::TauJetContainer* inTaus(nullptr);
   
     // if input comes from xAOD, or just running one collection,
     // then get the one collection and be done with it
     //
     if ( m_inputAlgoSystNames.empty() ) {
   
       // this will be the collection processed - no matter what!!
       //
       ANA_CHECK( HelperFunctions::retrieve(inTaus, m_inContainerName, m_event, m_store, msg()) );
   
       // create output container (if requested)
       //
       ConstDataVector<xAOD::TauJetContainer>* selectedTaus(nullptr);
       if ( m_createSelectedContainer ) { selectedTaus = new ConstDataVector<xAOD::TauJetContainer>(SG::VIEW_ELEMENTS); }
   
       // find the selected taus, and return if event passes object selection
       //
       eventPass = executeSelection( inTaus, mcEvtWeight, countPass, selectedTaus );
   
       if ( m_createSelectedContainer ) {
         if ( eventPass ) {
           // add ConstDataVector to TStore
       //
           ANA_CHECK( m_store->record( selectedTaus, m_outContainerName ));
         } else {
           // if the event does not pass the selection, CDV won't be ever recorded to TStore, so we have to delete it!
       //
           delete selectedTaus; selectedTaus = nullptr;
         }
       }
   
     } else { // get the list of systematics to run over
   
       // get vector of string giving the syst names of the upstream algo from TStore (rememeber: 1st element is a blank string: nominal case!)
       //
       std::vector< std::string >* systNames(nullptr);
       ANA_CHECK( HelperFunctions::retrieve(systNames, m_inputAlgoSystNames, 0, m_store, msg()) );
   
       // prepare a vector of the names of CDV containers for usage by downstream algos
       // must be a pointer to be recorded in TStore
       //
       auto vecOutContainerNames = std::make_unique< std::vector< std::string > >();
       ANA_MSG_DEBUG( " input list of syst size: " << static_cast<int>(systNames->size()) );
   
       // loop over systematic sets
       //
       bool eventPassThisSyst(false);
       for ( auto systName : *systNames ) {
   
         ANA_MSG_DEBUG( " syst name: " << systName << "  input container name: " << m_inContainerName+systName );
   
         ANA_CHECK( HelperFunctions::retrieve(inTaus, m_inContainerName + systName, m_event, m_store, msg()) );
   
         // create output container (if requested) - one for each systematic
         //
         ConstDataVector<xAOD::TauJetContainer>* selectedTaus(nullptr);
         if ( m_createSelectedContainer ) { selectedTaus = new ConstDataVector<xAOD::TauJetContainer>(SG::VIEW_ELEMENTS); }
   
         // find the selected Taus, and return if event passes object selection
         //
         eventPassThisSyst = executeSelection( inTaus, mcEvtWeight, countPass, selectedTaus );
   
         if ( countPass ) { countPass = false; } // only count objects/events for 1st syst collection in iteration (i.e., nominal)
   
         if ( eventPassThisSyst ) {
       // save the string of syst set under question if event is passing the selection
       //
       vecOutContainerNames->push_back( systName );
         }
   
         // if for at least one syst set the event passes selection, this will remain true!
         //
         eventPass = ( eventPass || eventPassThisSyst );
   
         ANA_MSG_DEBUG( " syst name: " << systName << "  output container name: " << m_outContainerName+systName );
   
         if ( m_createSelectedContainer ) {
           if ( eventPassThisSyst ) {
             // add ConstDataVector to TStore
         //
             ANA_CHECK( m_store->record( selectedTaus, m_outContainerName+systName ));
           } else {
             // if the event does not pass the selection for this syst, CDV won't be ever recorded to TStore, so we have to delete it!
             delete selectedTaus; selectedTaus = nullptr;
           }
         }
   
       } // close loop over syst sets
   
       ANA_MSG_DEBUG(" output list of syst size: " << static_cast<int>(vecOutContainerNames->size()) );
   
       // record in TStore the list of systematics names that should be considered down stream
       //
       ANA_CHECK( m_store->record( std::move(vecOutContainerNames), m_outputAlgoSystNames));
   
     }
   
     // look what we have in TStore
     //
     if(msgLvl(MSG::VERBOSE)) m_store->print();
   
     if( !eventPass ) {
       wk()->skipEvent();
       return EL::StatusCode::SUCCESS;
     }
   
     return EL::StatusCode::SUCCESS;
   
   }
   
   bool TauSelector :: executeSelection ( const xAOD::TauJetContainer* inTaus, float mcEvtWeight, bool countPass,
                          ConstDataVector<xAOD::TauJetContainer>* selectedTaus )
   {
   
     int nPass(0); int nObj(0);
     const SG::AuxElement::Decorator< char > passSelDecor( m_decorationName.c_str() );
   
     ANA_MSG_DEBUG( "Initial Taus: " << static_cast<uint32_t>(inTaus->size()) );
   
     for ( auto tau_itr : *inTaus ) { // duplicated of basic loop
   
       // if only looking at a subset of Taus make sure all are decorated
       //
       if ( m_nToProcess > 0 && nObj >= m_nToProcess ) {
         if ( m_decorateSelectedObjects ) {
           passSelDecor( *tau_itr ) = -1;
         } else {
           break;
         }
         continue;
       }
   
       nObj++;
       bool passSel = this->passCuts( tau_itr );
       if ( m_decorateSelectedObjects ) {
         passSelDecor( *tau_itr ) = passSel;
       }
   
       if ( passSel ) {
         nPass++;
         if ( m_createSelectedContainer ) {
           selectedTaus->push_back( tau_itr );
         }
       }
     }
   
     // for cutflow: make sure to count passed objects only once (i.e., this flag will be true only for nominal)
     //
     if ( countPass ) {
       m_numObject     += nObj;
       m_numObjectPass += nPass;
     }
   
     ANA_MSG_DEBUG( "Initial Taus (count obj): " << nObj << " - Selected Taus: " << nPass );
   
     // apply event selection based on minimal/maximal requirements on the number of objects per event passing cuts
     //
     if ( m_pass_min > 0 && nPass < m_pass_min ) {
       ANA_MSG_DEBUG( "Reject event: nSelectedTaus ("<<nPass<<") < nPassMin ("<<m_pass_min<<")" );
       return false;
     }
     if ( m_pass_max >= 0 && nPass > m_pass_max ) {
       ANA_MSG_DEBUG( "Reject event: nSelectedTaus ("<<nPass<<") > nPassMax ("<<m_pass_max<<")" );
       return false;
     }
   
     // for cutflow: make sure to count passed events only once (i.e., this flag will be true only for nominal)
     //
     if ( countPass ){
       m_numEventPass++;
       m_weightNumEventPass += mcEvtWeight;
     }
   
   
     // Perform trigger matching on the "good" (selected) taus
     //
     // NB: this part will be skipped if:
     //
     //  1. the user didn't pass any trigger chains to the algo (see initialize(): in that case, the tool is not even initialised!)
     //  2. there are no selected taus in the event
     //
     if ( m_doTrigMatch && selectedTaus ) {
   
       unsigned int nSelectedTaus = selectedTaus->size();
   
       static SG::AuxElement::Decorator< std::map<std::string,char> > isTrigMatchedMapTauDecor( "isTrigMatchedMapTau" );
   
       if ( nSelectedTaus > 0 ) {
   
         ANA_MSG_DEBUG( "Doing single tau trigger matching...");
   
         for ( auto const &chain : m_singleTauTrigChainsList ) {
   
           ANA_MSG_DEBUG( "\t checking trigger chain " << chain);
   
           for ( auto const tau : *selectedTaus ) {
   
             //  For each tau, decorate w/ a map<string,char> with the 'isMatched' info associated
             //  to each trigger chain in the input list.
             //  If decoration map doesn't exist for this tau yet, create it (will be done only for the 1st iteration on the chain names)
             //
             if ( !isTrigMatchedMapTauDecor.isAvailable( *tau ) ) {
               isTrigMatchedMapTauDecor( *tau ) = std::map<std::string,char>();
             }
   
             // check whether the tau is matched (NOTE: no DR is required for taus)
             //
             char matched = ( m_trigTauMatchTool_handle->match( *tau, chain ) );
   
             ANA_MSG_DEBUG( "\t\t is tau trigger matched? " << matched);
   
             ( isTrigMatchedMapTauDecor( *tau ) )[chain] = matched;
           }
         }
   
       }
   
       // If checking dilepton trigger, form lepton pairs and test matching for each one.
       // Save a:
       //
       // multimap< chain, pair< pair<idx_i, idx_j>, ismatched > >
       //
       // as *event* decoration to store which
       // pairs are matched (to a given chain) and which aren't.
       // A multimap is used b/c a given key (i.e., a chain) can be associated to more than one pair. This is the case for e.g., trilepton events.
       //
       // By retrieving this map later on, user can decide what to do with the event
       // (Generally one could just loop over the map and save a flag if there's at least one pair that matches a given chain)
   
       if ( nSelectedTaus > 1 && !m_diTauTrigChains.empty() ) {
   
         ANA_MSG_DEBUG( "Doing di-tau trigger matching...");
   
         const xAOD::EventInfo* eventInfo(nullptr);
         ANA_CHECK( HelperFunctions::retrieve(eventInfo, m_eventInfoContainerName, m_event, m_store, msg()) );
   
         typedef std::pair< std::pair<unsigned int,unsigned int>, char> ditau_trigmatch_pair;
         typedef std::multimap< std::string, ditau_trigmatch_pair >    ditau_trigmatch_pair_map;
         static SG::AuxElement::Decorator< ditau_trigmatch_pair_map >  diTauTrigMatchPairMapDecor( "diTauTrigMatchPairMap" );
   
         for ( auto const &chain : m_diTauTrigChainsList ) {
   
           ANA_MSG_DEBUG( "\t checking trigger chain " << chain);
   
           //  If decoration map doesn't exist for this event yet, create it (will be done only for the 1st iteration on the chain names)
           //
           if ( !diTauTrigMatchPairMapDecor.isAvailable( *eventInfo ) ) {
             diTauTrigMatchPairMapDecor( *eventInfo ) = ditau_trigmatch_pair_map();
           }
   
           std::vector<const xAOD::IParticle*> myTaus;
   
           for ( unsigned int itau = 0; itau < selectedTaus->size()-1; ++itau ) {
   
             for ( unsigned int jtau = itau+1; jtau < selectedTaus->size(); ++jtau ) {
   
               // test a new pair
               //
               myTaus.clear();
               myTaus.push_back( selectedTaus->at(itau) );
               myTaus.push_back( selectedTaus->at(jtau) );
   
               // check whether the pair is matched (NOTE: no DR is required for taus)
               //
               char matched = m_trigTauMatchTool_handle->match( myTaus, chain  );
   
               ANA_MSG_DEBUG( "\t\t is the tau pair ("<<itau<<","<<jtau<<") trigger matched? " << matched);
   
               std::pair <unsigned int, unsigned int>  chain_idxs = std::make_pair(itau,jtau);
               ditau_trigmatch_pair  chain_decision = std::make_pair(chain_idxs,matched);
               diTauTrigMatchPairMapDecor( *eventInfo ).insert( std::pair< std::string, ditau_trigmatch_pair >(chain,chain_decision) );
   
             }
           }
         } //for m_diTauTrigChainsList
       } //if nSelectedTaus > 1 && !m_diTauTrigChains.empty()
     } //if m_doTrigMatch && selectedTaus
   
     ANA_MSG_DEBUG( "Left  executeSelection..." );
   
     return true;
   }
   
   
   EL::StatusCode TauSelector :: postExecute ()
   {
     // Here you do everything that needs to be done after the main event
     // processing.  This is typically very rare, particularly in user
     // code.  It is mainly used in implementing the NTupleSvc.
   
     ANA_MSG_DEBUG( "Calling postExecute");
   
     return EL::StatusCode::SUCCESS;
   }
   
   
   
   EL::StatusCode TauSelector :: finalize ()
   {
     // This method is the mirror image of initialize(), meaning it gets
     // called after the last event has been processed on the worker node
     // and allows you to finish up any objects you created in
     // initialize() before they are written to disk.  This is actually
     // fairly rare, since this happens separately for each worker node.
     // Most of the time you want to do your post-processing on the
     // submission node after all your histogram outputs have been
     // merged.  This is different from histFinalize() in that it only
     // gets called on worker nodes that processed input events.
   
     if ( m_useCutFlow ) {
       ANA_MSG_INFO( "Filling cutflow");
       m_cutflowHist ->SetBinContent( m_cutflow_bin, m_numEventPass        );
       m_cutflowHistW->SetBinContent( m_cutflow_bin, m_weightNumEventPass  );
     }
   
     return EL::StatusCode::SUCCESS;
   }
   
   
   
   EL::StatusCode TauSelector :: histFinalize ()
   {
     // This method is the mirror image of histInitialize(), meaning it
     // gets called after the last event has been processed on the worker
     // node and allows you to finish up any objects you created in
     // histInitialize() before they are written to disk.  This is
     // actually fairly rare, since this happens separately for each
     // worker node.  Most of the time you want to do your
     // post-processing on the submission node after all your histogram
     // outputs have been merged.  This is different from finalize() in
     // that it gets called on all worker nodes regardless of whether
     // they processed input events.
   
     ANA_MSG_INFO( "Calling histFinalize");
     ANA_CHECK( xAH::Algorithm::algFinalize());
     return EL::StatusCode::SUCCESS;
   }
   
   int TauSelector :: passCuts( const xAOD::TauJet* tau ) {
   
     // fill cutflow bin 'all' before any cut
     if(!m_isUsedBefore && m_useCutFlow) m_tau_cutflowHist_1->Fill( m_tau_cutflow_all, 1 );
     if ( m_isUsedBefore && m_useCutFlow ) { m_tau_cutflowHist_2->Fill( m_tau_cutflow_all, 1 ); }
   
     // **********************************************************************************************************
     //
     // TauSelectorTool cut
     //
   
     // JetRNNSigID decoration
     // ----------------------
     static SG::AuxElement::Decorator< int > isJetRNNSigVeryLoose("isJetRNNSigVeryLoose");
     static SG::AuxElement::Decorator< int > isJetRNNSigLoose("isJetRNNSigLoose");
     static SG::AuxElement::Decorator< int > isJetRNNSigMedium("isJetRNNSigMedium");
     static SG::AuxElement::Decorator< int > isJetRNNSigTight("isJetRNNSigTight");
   
     static SG::AuxElement::Decorator< float > JetRNNScore("JetRNNScore");
     static SG::AuxElement::Decorator< float > JetRNNScoreSigTrans("JetRNNScoreSigTrans");
     
     isJetRNNSigVeryLoose( *tau ) = static_cast<int>(tau->isTau(xAOD::TauJetParameters::JetRNNSigVeryLoose));
     isJetRNNSigLoose( *tau ) = static_cast<int>(tau->isTau(xAOD::TauJetParameters::JetRNNSigLoose));
     isJetRNNSigMedium( *tau ) = static_cast<int>(tau->isTau(xAOD::TauJetParameters::JetRNNSigMedium));
     isJetRNNSigTight( *tau ) = static_cast<int>(tau->isTau(xAOD::TauJetParameters::JetRNNSigTight));
   
     JetRNNScore( *tau ) = static_cast<float>(tau->discriminant(xAOD::TauJetParameters::RNNJetScore));
     JetRNNScoreSigTrans( *tau ) = static_cast<float>(tau->discriminant(xAOD::TauJetParameters::RNNJetScoreSigTrans));
   
     // EleRNN decoration
     // -----------------
     static SG::AuxElement::Decorator< int > isEleRNNLoose("isEleRNNLoose");
     static SG::AuxElement::Decorator< int > isEleRNNMedium("isEleRNNMedium");
     static SG::AuxElement::Decorator< int > isEleRNNTight("isEleRNNTight");
   
     static SG::AuxElement::Decorator< float > EleRNNScore("EleRNNScore");
     
   
     isEleRNNLoose( *tau ) = static_cast<int>(tau->isTau(xAOD::TauJetParameters::EleRNNLoose));
     isEleRNNMedium( *tau ) = static_cast<int>(tau->isTau(xAOD::TauJetParameters::EleRNNMedium));
     isEleRNNTight( *tau ) = static_cast<int>(tau->isTau(xAOD::TauJetParameters::EleRNNTight));
   
     EleRNNScore( *tau ) = static_cast<float>(tau->discriminant(xAOD::TauJetParameters::RNNEleScore));
   
   
     // EleID decoration
     // -----------------
     static SG::AuxElement::Decorator< int > passEleOLR("passEleOLR");
     
     passEleOLR( *tau ) = static_cast<int>(tau->isTau(xAOD::TauJetParameters::PassEleOLR));
   
     if (m_decorateWithTracks) {
   
        // TauTracks decoration
        // --------------------
        SG::AuxElement::Decorator< std::vector<float> > tauTrackPt( "trackPt" );
        SG::AuxElement::Decorator< std::vector<float> > tauTrackEta( "trackEta" );
        SG::AuxElement::Decorator< std::vector<float> > tauTrackPhi( "trackPhi" );
        SG::AuxElement::Decorator< std::vector<int> > tauTrackIsCore( "trackIsCore" );
        SG::AuxElement::Decorator< std::vector<int> > tauTrackIsWide( "trackIsWide" );
        SG::AuxElement::Decorator< std::vector<int> > tauTrackFailTrackFilter( "trackFailTrackFilter" );
        SG::AuxElement::Decorator< std::vector<int> > tauTrackPassTrkSel( "trackPassTrkSel" );
        SG::AuxElement::Decorator< std::vector<int> > tauTrackIsClCharged( "trackIsClCharged" );
        SG::AuxElement::Decorator< std::vector<int> > tauTrackIsClIso( "trackIsClIso" );
        SG::AuxElement::Decorator< std::vector<int> > tauTrackIsClConv( "trackIsClConv" );
        SG::AuxElement::Decorator< std::vector<int> > tauTrackIsClFake( "trackIsClFake" );
        
        
        for (const xAOD::TauTrack* trk : tau->allTracks()){
         
           tauTrackPt( *tau ).push_back(trk->pt());
           tauTrackEta( *tau ).push_back(trk->eta());
           tauTrackPhi( *tau ).push_back(trk->phi());
        
        
           if (!trk->flag(xAOD::TauJetParameters::coreTrack)) tauTrackIsCore(*tau).push_back(1);
           else tauTrackIsCore(*tau).push_back(0);
        
           if (!trk->flag(xAOD::TauJetParameters::wideTrack)) tauTrackIsWide(*tau).push_back(1);
           else tauTrackIsWide(*tau).push_back(0);
        
           if (!trk->flag(xAOD::TauJetParameters::failTrackFilter)) tauTrackFailTrackFilter(*tau).push_back(1);
           else tauTrackFailTrackFilter(*tau).push_back(0);
        
           if (!trk->flag(xAOD::TauJetParameters::passTrkSelector)) tauTrackPassTrkSel(*tau).push_back(1);
           else tauTrackPassTrkSel(*tau).push_back(0);
        
           if (!trk->flag(xAOD::TauJetParameters::classifiedCharged)) tauTrackIsClCharged(*tau).push_back(1);
           else tauTrackIsClCharged(*tau).push_back(0);
        
           if (!trk->flag(xAOD::TauJetParameters::classifiedIsolation)) tauTrackIsClIso(*tau).push_back(1);
           else tauTrackIsClIso(*tau).push_back(0);
        
           if (!trk->flag(xAOD::TauJetParameters::classifiedConversion)) tauTrackIsClConv(*tau).push_back(1);
           else tauTrackIsClConv(*tau).push_back(0);
        
           if (!trk->flag(xAOD::TauJetParameters::classifiedFake)) tauTrackIsClFake(*tau).push_back(1);
           else tauTrackIsClFake(*tau).push_back(0);
        
        }
   
     } // if decorate with tracks
     
     ANA_MSG_DEBUG( "Got decoration values" );
   
   
     if ( tau->pt() <= m_minPtDAOD ) {
       ANA_MSG_DEBUG( "Tau failed minimal pT requirement for usage with derivations");
       return 0;
     }
   
     if ( ! m_tauSelTool_handle->accept( *tau ) ) {
       ANA_MSG_DEBUG( "Tau failed requirements of TauSelectionTool");
       return 0;
     }
   
     if( !m_isUsedBefore && m_useCutFlow) m_tau_cutflowHist_1->Fill( m_tau_cutflow_selected, 1 );
     if ( m_isUsedBefore && m_useCutFlow ) { m_tau_cutflowHist_2->Fill( m_tau_cutflow_selected, 1 ); }
   
     return 1;
   }