#include <METCorrectionAlgorithm.h>

Classes
struct	type2BinningEntryType

Public Member Functions
CorrMETData	compMETCorrection (edm::Event &)

	METCorrectionAlgorithm (const edm::ParameterSet &, edm::ConsumesCollector &&iConsumesCollector)

	~METCorrectionAlgorithm ()

Private Types
typedef std::vector< edm::InputTag >	vInputTag

typedef std::vector< std::string >	vstring

Private Attributes
bool	applyType0Corrections_

bool	applyType1Corrections_

bool	applyType2Corrections_

std::vector< edm::EDGetTokenT< CorrMETData > >	chsSumTokens_

double	type0Cuncl_

double	type0Rsoft_

std::vector< edm::EDGetTokenT< CorrMETData > >	type1Tokens_

std::vector< type2BinningEntryType * >	type2Binning_

Detailed Description

Algorithm for o propagating jet energy corrections to MET (Type 1 MET corrections) o calibrating momentum of particles not within jets ("unclustered energy") and propagating those corrections to MET (Type 2 MET corrections)

Authors: Michael Schmitt, Richard Cavanaugh, The University of Florida Florent Lacroix, University of Illinois at Chicago Christian Veelken, LLR Tai Sakuma, Texas A&M

Definition at line 32 of file METCorrectionAlgorithm.h.

Member Typedef Documentation

◆ vInputTag

typedef std::vector<edm::InputTag> METCorrectionAlgorithm::vInputTag

private

Definition at line 40 of file METCorrectionAlgorithm.h.

◆ vstring

typedef std::vector<std::string> METCorrectionAlgorithm::vstring

private

Definition at line 52 of file METCorrectionAlgorithm.h.

Constructor & Destructor Documentation

◆ METCorrectionAlgorithm()

METCorrectionAlgorithm::METCorrectionAlgorithm	(	const edm::ParameterSet &	cfg,
		edm::ConsumesCollector &&	iConsumesCollector
	)

explicit

Definition at line 9 of file METCorrectionAlgorithm.cc.

                                                                                           {
   applyType1Corrections_ = cfg.getParameter<bool>("applyType1Corrections");
   if (applyType1Corrections_) {
     vInputTag srcType1Corrections = cfg.getParameter<vInputTag>("srcType1Corrections");
     for (vInputTag::const_iterator inputTag = srcType1Corrections.begin(); inputTag != srcType1Corrections.end();
          ++inputTag) {
       type1Tokens_.push_back(iConsumesCollector.consumes<CorrMETData>(*inputTag));
     }
   }
  
   applyType2Corrections_ = cfg.getParameter<bool>("applyType2Corrections");
   if (applyType2Corrections_) {
     vInputTag srcUnclEnergySums = cfg.getParameter<vInputTag>("srcUnclEnergySums");
  
     if (cfg.exists("type2Binning")) {
       typedef std::vector<edm::ParameterSet> vParameterSet;
       vParameterSet cfgType2Binning = cfg.getParameter<vParameterSet>("type2Binning");
       for (vParameterSet::const_iterator cfgType2BinningEntry = cfgType2Binning.begin();
            cfgType2BinningEntry != cfgType2Binning.end();
            ++cfgType2BinningEntry) {
         type2Binning_.push_back(
             new type2BinningEntryType(*cfgType2BinningEntry, srcUnclEnergySums, iConsumesCollector));
       }
     } else {
       std::string type2CorrFormula = cfg.getParameter<std::string>("type2CorrFormula");
       edm::ParameterSet type2CorrParameter = cfg.getParameter<edm::ParameterSet>("type2CorrParameter");
       type2Binning_.push_back(
           new type2BinningEntryType(type2CorrFormula, type2CorrParameter, srcUnclEnergySums, iConsumesCollector));
     }
   }
  
   applyType0Corrections_ =
       cfg.exists("applyType0Corrections") ? cfg.getParameter<bool>("applyType0Corrections") : false;
   if (applyType0Corrections_) {
     vInputTag srcCHSSums = cfg.getParameter<vInputTag>("srcCHSSums");
     for (vInputTag::const_iterator inputTag = srcCHSSums.begin(); inputTag != srcCHSSums.end(); ++inputTag) {
       chsSumTokens_.push_back(iConsumesCollector.consumes<CorrMETData>(*inputTag));
     }
  
     type0Rsoft_ = cfg.getParameter<double>("type0Rsoft");
     type0Cuncl_ = 1.0;
     if (applyType2Corrections_) {
       if (cfg.exists("type2Binning"))
         throw cms::Exception("Invalid Arg")
             << "Currently, applyType0Corrections and type2Binning cannot be used together!";
       std::string type2CorrFormula = cfg.getParameter<std::string>("type2CorrFormula");
       if (!(type2CorrFormula == "A"))
         throw cms::Exception("Invalid Arg") << "type2CorrFormula must be \"A\" if applyType0Corrections!";
       edm::ParameterSet type2CorrParameter = cfg.getParameter<edm::ParameterSet>("type2CorrParameter");
       type0Cuncl_ = type2CorrParameter.getParameter<double>("A");
     }
   }
 }

References applyType0Corrections_, applyType1Corrections_, applyType2Corrections_, looper::cfg, chsSumTokens_, SimL1EmulatorRepack_Full_cff::inputTag, patCaloMETCorrections_cff::srcType1Corrections, correctionTermsCaloMet_cff::srcUnclEnergySums, AlCaHLTBitMon_QueryRunRegistry::string, type0Cuncl_, type0Rsoft_, type1Tokens_, type2Binning_, correctionTermsCaloMet_cff::type2CorrFormula, and correctionTermsCaloMet_cff::type2CorrParameter.

◆ ~METCorrectionAlgorithm()

METCorrectionAlgorithm::~METCorrectionAlgorithm ( )

Definition at line 64 of file METCorrectionAlgorithm.cc.

                                                 {
   for (std::vector<type2BinningEntryType*>::const_iterator it = type2Binning_.begin(); it != type2Binning_.end();
        ++it) {
     delete (*it);
   }
 }

References type2Binning_.

Member Function Documentation

◆ compMETCorrection()

CorrMETData METCorrectionAlgorithm::compMETCorrection ( edm::Event & evt )

Definition at line 71 of file METCorrectionAlgorithm.cc.

                                                                    {
   CorrMETData metCorr;
   metCorr.mex = 0.;
   metCorr.mey = 0.;
   metCorr.sumet = 0.;
  
   if (applyType0Corrections_) {
     //--- sum all Type 0 MET correction terms
     edm::Handle<CorrMETData> chsSum;
     for (std::vector<edm::EDGetTokenT<CorrMETData> >::const_iterator corrToken = chsSumTokens_.begin();
          corrToken != chsSumTokens_.end();
          ++corrToken) {
       evt.getByToken(*corrToken, chsSum);
  
       metCorr.mex += type0Cuncl_ * (1 - type0Rsoft_) * chsSum->mex;
       metCorr.mey += type0Cuncl_ * (1 - type0Rsoft_) * chsSum->mey;
       metCorr.sumet += type0Cuncl_ * (1 - type0Rsoft_) * chsSum->sumet;
     }
   }
  
   if (applyType1Corrections_) {
     //--- sum all Type 1 MET correction terms
     edm::Handle<CorrMETData> type1Correction;
     for (std::vector<edm::EDGetTokenT<CorrMETData> >::const_iterator corrToken = type1Tokens_.begin();
          corrToken != type1Tokens_.end();
          ++corrToken) {
       evt.getByToken(*corrToken, type1Correction);
  
       metCorr.mex += type1Correction->mex;
       metCorr.mey += type1Correction->mey;
       metCorr.sumet += type1Correction->sumet;
     }
   }
  
   if (applyType2Corrections_) {
     //--- compute momentum sum of all "unclustered energy" in the event
     //
     //    NOTE: calibration factors/formulas for Type 2 MET correction may depend on eta
     //         (like the jet energy correction factors do)
     //
  
     for (std::vector<type2BinningEntryType*>::const_iterator type2BinningEntry = type2Binning_.begin();
          type2BinningEntry != type2Binning_.end();
          ++type2BinningEntry) {
       CorrMETData unclEnergySum;
       edm::Handle<CorrMETData> unclEnergySummand;
       for (std::vector<edm::EDGetTokenT<CorrMETData> >::const_iterator corrToken =
                (*type2BinningEntry)->corrTokens_.begin();
            corrToken != (*type2BinningEntry)->corrTokens_.end();
            ++corrToken) {
         evt.getByToken(*corrToken, unclEnergySummand);
  
         unclEnergySum.mex += unclEnergySummand->mex;
         unclEnergySum.mey += unclEnergySummand->mey;
         unclEnergySum.sumet += unclEnergySummand->sumet;
       }
  
       //--- calibrate "unclustered energy"
       double unclEnergySumPt = sqrt(unclEnergySum.mex * unclEnergySum.mex + unclEnergySum.mey * unclEnergySum.mey);
       double unclEnergyScaleFactor = (*type2BinningEntry)->binCorrFormula_->Eval(unclEnergySumPt);
  
       //--- MET balances momentum of reconstructed particles,
       //    hence correction to "unclustered energy" and corresponding Type 2 MET correction are of opposite sign
       metCorr.mex -= (unclEnergyScaleFactor - 1.) * unclEnergySum.mex;
       metCorr.mey -= (unclEnergyScaleFactor - 1.) * unclEnergySum.mey;
       metCorr.sumet += (unclEnergyScaleFactor - 1.) * unclEnergySum.sumet;
     }
   }
  
   return metCorr;
 }