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#ifndef JECFWLITE
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#define JECFWLITE
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#include <iostream>
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#include <string>
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#include "VHbbAnalysis/VHbbDataFormats/interface/VHbbEvent.h"
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#include "CondFormats/JetMETObjects/interface/FactorizedJetCorrector.h"
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#include "CondFormats/JetMETObjects/interface/JetCorrectorParameters.h"
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#include "CondFormats/JetMETObjects/interface/JetCorrectionUncertainty.h"
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class JECFWLite
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{
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public:
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JECFWLite(std::string base,std::string jettype="AK5PFchs")
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{
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//std::string prefix = base + "/Summer12V3MC";
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std::string prefix = base + "/START53_V15MC";
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parMC.push_back( JetCorrectorParameters((prefix+"_L1FastJet_"+jettype+".txt").c_str()));
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parMC.push_back( JetCorrectorParameters((prefix+"_L2Relative_"+jettype+".txt").c_str()));
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parMC.push_back( JetCorrectorParameters((prefix+"_L3Absolute_"+jettype+".txt").c_str()));
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jetCorrectorMC= new FactorizedJetCorrector(parMC);
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jecUncMC = new JetCorrectionUncertainty((prefix+"_Uncertainty_"+jettype+".txt").c_str());
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/* prefix = base + "/ReferenceMC";
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parMCRefW.push_back( JetCorrectorParameters((prefix+"_L1FastJet_AK5PF.txt").c_str()));
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parMCRefW.push_back( JetCorrectorParameters((prefix+"_L2Relative_AK5PF.txt").c_str()));
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parMCRefW.push_back( JetCorrectorParameters((prefix+"_L3Absolute_AK5PF.txt").c_str()));
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jetCorrectorMCRefWrong= new FactorizedJetCorrector(parMCRefW);
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*/
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prefix = base + "/ReferenceMC";
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parMCRef.push_back( JetCorrectorParameters((prefix+"_L1FastJet_"+jettype+".txt").c_str()));
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parMCRef.push_back( JetCorrectorParameters((prefix+"_L2Relative_"+jettype+".txt").c_str()));
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parMCRef.push_back( JetCorrectorParameters((prefix+"_L3Absolute_"+jettype+".txt").c_str()));
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jetCorrectorMCRef= new FactorizedJetCorrector(parMCRef);
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jecUncMCRef = new JetCorrectionUncertainty((prefix+"_Uncertainty_"+jettype+".txt").c_str());
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prefix = base + "/GR_P_V42_AN3DATA";
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parData.push_back( JetCorrectorParameters((prefix+"_L1FastJet_"+jettype+".txt").c_str()));
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parData.push_back( JetCorrectorParameters((prefix+"_L2Relative_"+jettype+".txt").c_str()));
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parData.push_back( JetCorrectorParameters((prefix+"_L3Absolute_"+jettype+".txt").c_str()));
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parData.push_back( JetCorrectorParameters((prefix+"_L2L3Residual_"+jettype+".txt").c_str()));
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jetCorrectorData= new FactorizedJetCorrector(parData);
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jecUncData = new JetCorrectionUncertainty((prefix+"_Uncertainty_"+jettype+".txt").c_str());
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prefix = base + "/Reference";
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parDataRef.push_back( JetCorrectorParameters((prefix+"_L1FastJet_"+jettype+".txt").c_str()));
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parDataRef.push_back( JetCorrectorParameters((prefix+"_L2Relative_"+jettype+".txt").c_str()));
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parDataRef.push_back( JetCorrectorParameters((prefix+"_L3Absolute_"+jettype+".txt").c_str()));
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parDataRef.push_back( JetCorrectorParameters((prefix+"_L2L3Residual_"+jettype+".txt").c_str()));
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jetCorrectorDataRef= new FactorizedJetCorrector(parDataRef);
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jecUncDataRef = new JetCorrectionUncertainty((prefix+"_Uncertainty_"+jettype+".txt").c_str());
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}
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VHbbEvent::SimpleJet correctRight(const VHbbEvent::SimpleJet &j, float rho, bool isMC, bool checkRef = false)
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{
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VHbbEvent::SimpleJet c=j;
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FactorizedJetCorrector * corr=0;
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if(checkRef && isMC) corr=jetCorrectorMCRef;
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if(!checkRef && isMC) corr=jetCorrectorMC;
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if(checkRef && !isMC) corr=jetCorrectorDataRef;
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if(!checkRef && !isMC) corr=jetCorrectorData;
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corr->setJetEta(j.p4.Eta());
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corr->setJetPt(j.ptRaw);
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corr->setJetA(j.jetArea);
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corr->setRho(rho);
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float scale=corr->getCorrection()*j.ptRaw/j.p4.Pt();
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c.p4= scale * j.p4 ;
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c.jecunc=uncert(c,isMC,checkRef);
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return c;
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}
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float uncert(float eta, float pt, bool isMC, bool checkRef = false)
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{
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JetCorrectionUncertainty *jecUnc;
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if(checkRef && isMC) jecUnc=jecUncMCRef;
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if(!checkRef && isMC) jecUnc=jecUncMC;
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if(checkRef && !isMC) jecUnc=jecUncDataRef;
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if(!checkRef && !isMC) jecUnc=jecUncData;
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jecUnc->setJetEta(eta);
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jecUnc->setJetPt(pt); // here you must use the CORRECTED jet pt
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double unc = jecUnc->getUncertainty(true);
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return unc;
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}
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float uncert(const VHbbEvent::SimpleJet &j, bool isMC, bool checkRef = false)
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{
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JetCorrectionUncertainty *jecUnc;
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if(checkRef && isMC) jecUnc=jecUncMCRef;
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if(!checkRef && isMC) jecUnc=jecUncMC;
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if(checkRef && !isMC) jecUnc=jecUncDataRef;
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if(!checkRef && !isMC) jecUnc=jecUncData;
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jecUnc->setJetEta(j.p4.Eta());
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jecUnc->setJetPt(j.p4.Pt()); // here you must use the CORRECTED jet pt
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double unc = jecUnc->getUncertainty(true);
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return unc;
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}
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VHbbEvent::SimpleJet correct(const VHbbEvent::SimpleJet &j, float rho, bool isMC, bool checkRef = false)
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{
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VHbbEvent::SimpleJet c=j;
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FactorizedJetCorrector * corr=0;
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if(checkRef && isMC) corr=jetCorrectorMCRef;
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if(!checkRef && isMC) corr=jetCorrectorMC;
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if(checkRef && !isMC) corr=jetCorrectorDataRef;
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if(!checkRef && !isMC) corr=jetCorrectorData;
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corr->setJetEta(j.p4.Eta());
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corr->setJetPt(j.ptRaw);
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corr->setJetA(j.jetArea);
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corr->setRho(rho);
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float scale=corr->getCorrection()*j.ptRaw/j.p4.Pt();
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c.p4= scale * j.p4 ;
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if(checkRef)
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{
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if(fabs(c.p4.Pt()-j.p4.Pt()) > 0.01 * (c.p4.Pt()+j.p4.Pt()) )
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{
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corr->setJetEta(j.p4.Eta());
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corr->setJetPt(j.ptRaw);
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corr->setJetA(j.jetArea);
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corr->setRho(rho);
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std::cout << "ERROR CORRECTIONS ARE NOT CLOSING: " << c.p4.Pt() << " vs " << j.p4.Pt() << " raw " << j.ptRaw << " new corr " << corr->getCorrection() << " old " << j.p4.Pt()/j.ptRaw << std::endl;
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}
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}
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//else {std::cout << "Check ok: " << c.p4.Pt() << " vs " << j.p4.Pt() << " raw " << j.ptRaw << " new corr " << corr->getCorrection() << " old " << j.p4.Pt()/j.ptRaw << std::endl;}
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c.jecunc=uncert(c,isMC,checkRef);
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return c;
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}
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std::vector<JetCorrectorParameters> parMC;
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std::vector<JetCorrectorParameters> parMCRef;
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std::vector<JetCorrectorParameters> parMCRefW;
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std::vector<JetCorrectorParameters> parData;
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std::vector<JetCorrectorParameters> parDataRef;
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FactorizedJetCorrector * jetCorrectorMC;
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FactorizedJetCorrector * jetCorrectorMCRefWrong;
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FactorizedJetCorrector * jetCorrectorMCRef;
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FactorizedJetCorrector * jetCorrectorData;
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FactorizedJetCorrector * jetCorrectorDataRef;
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JetCorrectionUncertainty *jecUncMC;
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JetCorrectionUncertainty *jecUncMCRef;
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JetCorrectionUncertainty *jecUncData;
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JetCorrectionUncertainty *jecUncDataRef;
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};
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#endif
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