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// $Id: DilepSelMod.cc,v 1.2 2009/06/15 15:00:22 loizides Exp $
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#include "MitPhysics/SelMods/interface/DilepSelMod.h"
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#include "MitAna/DataCont/interface/ObjArray.h"
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#include "MitAna/DataTree/interface/CompositeParticle.h"
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#include "MitAna/DataTree/interface/ParticleCol.h"
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#include "MitPhysics/Init/interface/ModNames.h"
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#include "MitCommon/MathTools/interface/MathUtils.h"
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#include <TH1D.h>
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using namespace mithep;
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ClassImp(mithep::DilepSelMod)
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//--------------------------------------------------------------------------------------------------
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DilepSelMod::DilepSelMod(const char *name, const char *title) :
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BaseMod(name,title),
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fCleanLeptonsName(ModNames::gkMergedLeptonsName),
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fMinPt(10),
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fDilMinMass(12),
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fMinZMass(70),
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fMaxZMass(110),
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fIgnoreElCharge(kTRUE),
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fNAccCounters(0),
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fAllDiLepMass(0),
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fDiElMass(0),
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fDiMuMass(0),
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fElMuMass(0),
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fAllDiLepMassAcc(0),
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fDiElMassAcc(0),
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fDiMuMassAcc(0),
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fElMuMassAcc(0),
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fNLeptons(0),
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fNGPairs(0),
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fNZPairs(0)
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{
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// Constructor.
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}
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//--------------------------------------------------------------------------------------------------
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void DilepSelMod::Process()
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{
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// Process entries of the tree.
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fNAccCounters->Fill(0);
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const ParticleCol *leptons = GetObjThisEvt<ParticleCol>(fCleanLeptonsName);
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if (!leptons) {
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SkipEvent();
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return;
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}
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fNAccCounters->Fill(1);
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// make sure have found at least 2 leptons
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if (leptons->GetEntries()<2) {
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SkipEvent();
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return;
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}
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UInt_t nLeps = leptons->GetEntries();
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UInt_t nZPairs = 0;
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UInt_t nGoodPairs = 0;
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for (UInt_t i=0; i<nLeps; ++i) {
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const Particle *li = leptons->At(i);
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if (li->Pt()<fMinPt)
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continue;
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for (UInt_t j=0; j<i; ++j) {
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const Particle *lj = leptons->At(j);
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if (lj->Pt()<fMinPt)
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continue;
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CompositeParticle dil;
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dil.AddDaughter(li);
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dil.AddDaughter(lj);
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Double_t mass = dil.Mass();
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if (mass<fDilMinMass)
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continue;
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fAllDiLepMass->Fill(mass);
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if (li->ObjType()!=lj->ObjType()) {
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fElMuMass->Fill(mass);
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++nGoodPairs;
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continue;
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}
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if (li->Is(kMuon)) {
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if (li->Charge()!=lj->Charge()) {
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fDiMuMass->Fill(mass);
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if ((mass>fMinZMass) && (mass<fMaxZMass)) {
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++nZPairs;
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continue;
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}
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}
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++nGoodPairs;
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continue;
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}
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if (li->Is(kElectron)) {
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if (fIgnoreElCharge || (li->Charge()!=lj->Charge())) {
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fDiElMass->Fill(mass);
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if ((mass>fMinZMass) && (mass<fMaxZMass)) {
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++nZPairs;
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continue;
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}
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}
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++nGoodPairs;
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continue;
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}
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}
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}
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fNLeptons->Fill(nLeps);
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fNGPairs->Fill(nGoodPairs);
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fNZPairs->Fill(nZPairs);
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fNAccCounters->Fill(2);
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// cut on number of Z pairs
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if (nZPairs>=1) {
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SkipEvent();
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return;
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}
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fNAccCounters->Fill(3);
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// cut on number of good pairs
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if (nGoodPairs<1) {
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SkipEvent();
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return;
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}
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fNAccCounters->Fill(4);
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for (UInt_t i=0; i<nLeps; ++i) {
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const Particle *li = leptons->At(i);
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if (li->Pt()<fMinPt)
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continue;
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for (UInt_t j=0; j<i; ++j) {
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const Particle *lj = leptons->At(j);
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if (lj->Pt()<fMinPt)
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continue;
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CompositeParticle dil;
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dil.AddDaughter(li);
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dil.AddDaughter(lj);
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Double_t mass = dil.Mass();
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if (mass<fDilMinMass)
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continue;
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fAllDiLepMassAcc->Fill(mass);
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if (li->ObjType()!=lj->ObjType()) {
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fElMuMassAcc->Fill(mass);
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continue;
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}
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if (li->Is(kMuon)) {
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if (li->Charge()!=lj->Charge()) {
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fDiMuMassAcc->Fill(mass);
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continue;
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}
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}
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if (li->Is(kElectron)) {
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if (fIgnoreElCharge || (li->Charge()!=lj->Charge())) {
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fDiElMassAcc->Fill(mass);
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}
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continue;
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}
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}
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}
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}
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//--------------------------------------------------------------------------------------------------
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void DilepSelMod::SlaveBegin()
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{
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// Create and add histograms to the output list.
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AddTH1(fNAccCounters,"hNAccCounters",";cut;#",6,-0.5,5.5);
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if (1) {
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TAxis *xa = fNAccCounters->GetXaxis();
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for(Int_t i=1;i<=fNAccCounters->GetNbinsX();++i)
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xa->SetBinLabel(i,"unused");
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xa->SetBinLabel(1,"Enter");
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xa->SetBinLabel(2,"Objs");
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xa->SetBinLabel(3,"2Lep");
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xa->SetBinLabel(4,"ZPair");
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xa->SetBinLabel(5,"GPair");
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xa->SetRangeUser(0,4);
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}
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AddTH1(fAllDiLepMass,"hAllDiLepMass",";m_{ll} [GeV];#",150,0,300);
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AddTH1(fDiElMass,"hDiElMass",";m_{ll} [GeV];#",150,0,300);
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AddTH1(fDiMuMass,"hDiMuMass",";m_{ll} [GeV];#",150,0,300);
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AddTH1(fElMuMass,"hElMuMass",";m_{ll} [GeV];#",150,0,300);
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AddTH1(fAllDiLepMassAcc,"hAllDiLepMassAcc",";m_{ll} [GeV];#",150,0,300);
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AddTH1(fDiElMassAcc,"hDiElMassAcc",";m_{ll} [GeV];#",150,0,300);
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AddTH1(fDiMuMassAcc,"hDiMuMassAcc",";m_{ll} [GeV];#",150,0,300);
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AddTH1(fElMuMassAcc,"hElMuMassAcc",";m_{ll} [GeV];#",150,0,300);
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AddTH1(fNLeptons,"hNLeptons",";leptons;#",10,-0.5,9.5);
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AddTH1(fNGPairs,"hNGoodPairs",";leptons;#",10,-0.5,9.5);
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AddTH1(fNZPairs,"hNZPairs",";leptons;#",10,-0.5,9.5);
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}
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