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| // -*- C++ -*-
#include "Rivet/Analysis.hh"
#include "Rivet/Projections/FinalState.hh"
#include "Rivet/Projections/ChargedFinalState.hh"
#include "Rivet/Projections/VisibleFinalState.hh"
#include "Rivet/Projections/IdentifiedFinalState.hh"
#include "Rivet/Projections/VetoedFinalState.hh"
#include "Rivet/Projections/FastJets.hh"
namespace Rivet {
class ATLAS_2012_I1180197 : public Analysis {
public:
/// Constructor
ATLAS_2012_I1180197()
: Analysis("ATLAS_2012_I1180197")
{ }
/// @name Analysis methods
//@{
/// Book histograms and initialize projections before the run
void init() {
// projection to find the electrons
IdentifiedFinalState elecs(Cuts::abseta < 2.47 && Cuts::pT > 7*GeV);
elecs.acceptIdPair(PID::ELECTRON);
declare(elecs, "elecs");
// projection to find the muons
IdentifiedFinalState muons(Cuts::abseta < 2.4 && Cuts::pT > 6*GeV);
muons.acceptIdPair(PID::MUON);
declare(muons, "muons");
// Jet finder
VetoedFinalState vfs;
vfs.addVetoPairId(PID::MUON);
declare(FastJets(vfs, FastJets::ANTIKT, 0.4), "AntiKtJets04");
// all tracks (to do deltaR with leptons)
declare(ChargedFinalState(Cuts::abseta < 3 && Cuts::pT > 0.5*GeV), "cfs");
// for pTmiss
declare(VisibleFinalState(Cuts::abseta < 4.9), "vfs");
// Book histograms
book(_count_1l_3jet_all_channel ,"count_1l_3jet_all_channel", 1, 0., 1.);
book(_count_1l_3jet_e_channel ,"count_1l_3jet_e_channel" , 1, 0., 1.);
book(_count_1l_3jet_mu_channel ,"count_1l_3jet_mu_channel" , 1, 0., 1.);
book(_count_1l_4jet_all_channel ,"count_1l_4jet_all_channel", 1, 0., 1.);
book(_count_1l_4jet_e_channel ,"count_1l_4jet_e_channel" , 1, 0., 1.);
book(_count_1l_4jet_mu_channel ,"count_1l_4jet_mu_channel" , 1, 0., 1.);
book(_count_1l_soft_all_channel ,"count_1l_soft_all_channel", 1, 0., 1.);
book(_count_1l_soft_e_channel ,"count_1l_soft_e_channel" , 1, 0., 1.);
book(_count_1l_soft_mu_channel ,"count_1l_soft_mu_channel" , 1, 0., 1.);
book(_count_2l_2jet_all_channel ,"count_2l_2jet_all_channel" , 1, 0., 1.);
book(_count_2l_2jet_ee_channel ,"count_2l_2jet_ee_channel" , 1, 0., 1.);
book(_count_2l_2jet_emu_channel ,"count_2l_2jet_emu_channel" , 1, 0., 1.);
book(_count_2l_2jet_mumu_channel ,"count_2l_2jet_mumu_channel", 1, 0., 1.);
book(_count_2l_4jet_all_channel ,"count_2l_4jet_all_channel" , 1, 0., 1.);
book(_count_2l_4jet_ee_channel ,"count_2l_4jet_ee_channel" , 1, 0., 1.);
book(_count_2l_4jet_emu_channel ,"count_2l_4jet_emu_channel" , 1, 0., 1.);
book(_count_2l_4jet_mumu_channel ,"count_2l_4jet_mumu_channel", 1, 0., 1.);
book(_hist_1l_m_eff_3jet ,"hist_1l_m_eff_3jet" , 6, 400., 1600.);
book(_hist_1l_m_eff_4jet ,"hist_1l_m_eff_4jet" , 4, 800., 1600.);
book(_hist_1l_eTmiss_m_eff_soft ,"hist_1l_eTmiss_m_eff_soft", 6, 0.1 , 0.7 );
book(_hist_2l_m_eff_2jet ,"hist_2l_m_eff_2jet" , 5, 700., 1700.);
book(_hist_2l_m_eff_4jet ,"hist_2l_m_eff_4jet" , 5, 600., 1600.);
}
/// Perform the per-event analysis
void analyze(const Event& event) {
const double weight = 1.0;
// get the candiate jets
Jets cand_jets;
for ( const Jet& jet :
apply<FastJets>(event, "AntiKtJets04").jetsByPt(20.0*GeV) ) {
if ( fabs( jet.eta() ) < 4.5 ) {
cand_jets.push_back(jet);
}
}
// charged tracks for isolation
Particles chg_tracks =
apply<ChargedFinalState>(event, "cfs").particles();
// find the electrons
Particles cand_soft_e,cand_hard_e;
for( const Particle & e :
apply<IdentifiedFinalState>(event, "elecs").particlesByPt()) {
double pT = e.pT();
double eta = e.eta();
// remove any leptons within 0.4 of any candidate jets
bool e_near_jet = false;
for ( const Jet& jet : cand_jets ) {
double dR = deltaR(e.momentum(),jet.momentum());
if ( inRange(dR, 0.2, 0.4) ) {
e_near_jet = true;
break;
}
}
if ( e_near_jet ) continue;
// soft selection
if(pT>7.&&!(fabs(eta)>1.37&&fabs(eta) < 1.52)) {
cand_soft_e.push_back(e);
}
// hard selection
if(pT>10.) cand_hard_e.push_back(e);
}
Particles cand_soft_mu,cand_hard_mu;
for( const Particle & mu :
apply<IdentifiedFinalState>(event, "muons").particlesByPt()) {
double pT = mu.pT();
double eta = mu.eta();
// remove any leptons within 0.4 of any candidate jets
bool mu_near_jet = false;
for ( const Jet& jet : cand_jets ) {
if ( deltaR(mu.momentum(),jet.momentum()) < 0.4 ) {
mu_near_jet = true;
break;
}
}
if ( mu_near_jet ) continue;
// soft selection
if (pT > 6*GeV && !inRange(fabs(eta), 1.37, 1.52)) {
cand_soft_mu.push_back(mu);
}
// hard selection
if (pT > 10*GeV) cand_hard_mu.push_back(mu);
}
// pTcone around muon track (hard)
Particles recon_hard_mu;
for ( const Particle & mu : cand_hard_mu ) {
double pTinCone = -mu.pT();
for ( const Particle & track : chg_tracks ) {
if ( deltaR(mu.momentum(),track.momentum()) < 0.2 )
pTinCone += track.pT();
}
if ( pTinCone < 1.8*GeV ) recon_hard_mu.push_back(mu);
}
// pTcone around muon track (soft)
Particles recon_soft_mu;
for ( const Particle & mu : cand_soft_mu ) {
double pTinCone = -mu.pT();
if(-pTinCone>20.) continue;
for ( const Particle & track : chg_tracks ) {
if ( deltaR(mu.momentum(),track.momentum()) < 0.2 )
pTinCone += track.pT();
}
if ( pTinCone < 1.8*GeV ) recon_soft_mu.push_back(mu);
}
// pTcone around electron track (hard)
Particles recon_hard_e;
for ( const Particle & e : cand_hard_e ) {
double pTinCone = -e.pT();
for ( const Particle & track : chg_tracks ) {
if ( deltaR(e.momentum(),track.momentum()) < 0.2 )
pTinCone += track.pT();
}
if ( pTinCone < 0.1 * e.pT() ) recon_hard_e.push_back(e);
}
// pTcone around electron track (soft)
Particles recon_soft_e;
for ( const Particle & e : cand_soft_e ) {
double pTinCone = -e.pT();
if(-pTinCone>25.) continue;
for ( const Particle & track : chg_tracks ) {
if ( deltaR(e.momentum(),track.momentum()) < 0.2 )
pTinCone += track.pT();
}
if ( pTinCone < 0.1 * e.pT() ) recon_soft_e.push_back(e);
}
// pTmiss
FourMomentum pTmiss;
for ( const Particle & p :
apply<VisibleFinalState>(event, "vfs").particles() ) {
pTmiss -= p.momentum();
}
double eTmiss = pTmiss.pT();
// hard lepton selection
if( ! recon_hard_e.empty() || !recon_hard_mu.empty() ) {
// discard jets that overlap with electrons
Jets recon_jets;
for ( const Jet& jet : cand_jets ) {
if(jet.abseta()>2.5||
jet.pT() < 25*GeV) continue;
bool away_from_e = true;
for ( const Particle & e : cand_hard_e ) {
if ( deltaR(e.momentum(),jet.momentum()) < 0.2 ) {
away_from_e = false;
break;
}
}
if ( away_from_e ) recon_jets.push_back( jet );
}
// both selections require at least 2 jets
// meff calculation
double HT=0.;
for( const Jet & jet : recon_jets) {
HT += jet.pT();
}
double m_eff_inc = HT+eTmiss;
unsigned int njet = recon_jets.size();
// 1 lepton only
if( recon_hard_e.size() + recon_hard_mu.size() == 1 && njet >=3 ) {
// get the lepton
Particle lepton = recon_hard_e.empty() ?
recon_hard_mu[0] : recon_hard_e[0];
// lepton variables
double pT = lepton.pT();
double mT = 2.*(pT*eTmiss -
lepton.px()*pTmiss.px() -
lepton.py()*pTmiss.py());
mT = sqrt(mT);
HT += pT;
m_eff_inc += pT;
// apply the cuts on the leptons and min no. of jets
if( ( ( lepton.abspid() == PID::ELECTRON && pT > 25. ) ||
( lepton.abspid() == PID::MUON && pT > 20. ) ) &&
mT > 100. && eTmiss > 250. ) {
double m_eff = pT+eTmiss;
for (size_t ix = 0; ix < 3; ++ix)
m_eff += recon_jets[ix].pT();
// 3 jet channel
if ( (njet == 3 || recon_jets[3].pT() < 80*GeV ) &&
recon_jets[0].pT() > 100*GeV ) {
if (eTmiss/m_eff > 0.3) {
if (m_eff_inc > 1200*GeV) {
_count_1l_3jet_all_channel->fill(0.5,weight);
if (lepton.abspid() == PID::ELECTRON )
_count_1l_3jet_e_channel->fill(0.5, weight);
else
_count_1l_3jet_mu_channel->fill(0.5, weight);
}
_hist_1l_m_eff_3jet->fill(min(1599., m_eff_inc), weight);
}
}
// 4 jet channel
else if (njet >=4 && recon_jets[3].pT() > 80*GeV) {
m_eff += recon_jets[3].pT();
if (eTmiss/m_eff>0.2) {
if (m_eff_inc > 800*GeV) {
_count_1l_4jet_all_channel->fill(0.5, weight);
if(lepton.abspid() == PID::ELECTRON )
_count_1l_4jet_e_channel->fill(0.5, weight);
else
_count_1l_4jet_mu_channel->fill(0.5, weight);
}
_hist_1l_m_eff_4jet->fill(min(1599., m_eff_inc), weight);
}
}
}
}
// multi lepton
else if( recon_hard_e.size() + recon_hard_mu.size() >= 2 && njet >=2 ) {
// get all the leptons and sort them by pT
Particles leptons(recon_hard_e.begin(),recon_hard_e.end());
leptons.insert(leptons.begin(),recon_hard_mu.begin(),recon_hard_mu.end());
std::sort(leptons.begin(), leptons.end(), cmpMomByPt);
double m_eff(0.0);
for (size_t ix = 0; ix < leptons.size(); ++ix)
m_eff += leptons[ix].pT();
m_eff_inc += m_eff;
m_eff += eTmiss;
for (size_t ix = 0; ix < (size_t) min(4, int(recon_jets.size())); ++ix)
m_eff += recon_jets[ix].pT();
// require opposite sign leptons
if (leptons[0].pid()*leptons[1].pid()<0) {
// 2 jet
if (recon_jets[1].pT()>200 &&
( njet<4 || (njet>=4 && recon_jets[3].pT() < 50*GeV)) && eTmiss > 300*GeV) {
_count_2l_2jet_all_channel->fill(0.5, weight);
if (leptons[0].abspid() == PID::ELECTRON && leptons[1].abspid() == PID::ELECTRON )
_count_2l_2jet_ee_channel->fill(0.5, weight);
else if (leptons[0].abspid() == PID::MUON && leptons[1].abspid() == PID::MUON )
_count_2l_2jet_mumu_channel->fill(0.5, weight);
else
_count_2l_2jet_emu_channel->fill(0.5, weight);
_hist_2l_m_eff_2jet->fill(min(1699., m_eff_inc), weight);
}
// 4 jet
else if (njet >= 4 && recon_jets[3].pT() > 50*GeV &&
eTmiss > 100*GeV && eTmiss/m_eff > 0.2) {
if ( m_eff_inc > 650*GeV ) {
_count_2l_4jet_all_channel->fill(0.5, weight);
if (leptons[0].abspid() == PID::ELECTRON && leptons[1].abspid() == PID::ELECTRON )
_count_2l_4jet_ee_channel->fill(0.5, weight);
else if (leptons[0].abspid() == PID::MUON && leptons[1].abspid() == PID::MUON )
_count_2l_4jet_mumu_channel->fill(0.5, weight);
else
_count_2l_4jet_emu_channel->fill(0.5, weight);
}
_hist_2l_m_eff_4jet->fill(min(1599., m_eff_inc), weight);
}
}
}
}
// soft lepton selection
if ( recon_soft_e.size() + recon_soft_mu.size() == 1 ) {
// discard jets that overlap with electrons
Jets recon_jets;
for ( const Jet& jet : cand_jets ) {
if (jet.abseta() > 2.5 || jet.pT() < 25*GeV) continue;
bool away_from_e = true;
for ( const Particle & e : cand_soft_e ) {
if ( deltaR(e.momentum(), jet.momentum()) < 0.2 ) {
away_from_e = false;
break;
}
}
if ( away_from_e ) recon_jets.push_back( jet );
}
// meff calculation
double HT=0.;
for (const Jet & jet : recon_jets) {
HT += jet.pT();
}
double m_eff_inc = HT+eTmiss;
// get the lepton
Particle lepton = recon_soft_e.empty() ?
recon_soft_mu[0] : recon_soft_e[0];
// lepton variables
double pT = lepton.pT();
double mT = 2.*(pT*eTmiss -
lepton.px()*pTmiss.px() -
lepton.py()*pTmiss.py());
mT = sqrt(mT);
m_eff_inc += pT;
double m_eff = pT+eTmiss;
// apply final cuts
if (recon_jets.size() >= 2 && recon_jets[0].pT()>130*GeV && mT > 100*GeV && eTmiss > 250*GeV) {
for (size_t ix = 0; ix < 2; ++ix)
m_eff += recon_jets[0].pT();
if (eTmiss/m_eff > 0.3) {
_count_1l_soft_all_channel->fill(0.5, weight);
if (lepton.abspid() == PID::ELECTRON )
_count_1l_soft_e_channel->fill(0.5, weight);
else
_count_1l_soft_mu_channel->fill(0.5, weight);
}
_hist_1l_eTmiss_m_eff_soft->fill( eTmiss/m_eff_inc, weight);
}
}
}
void finalize() {
double norm = 4.7* crossSection()/sumOfWeights()/femtobarn;
scale(_count_1l_3jet_all_channel ,norm);
scale(_count_1l_3jet_e_channel ,norm);
scale(_count_1l_3jet_mu_channel ,norm);
scale(_count_1l_4jet_all_channel ,norm);
scale(_count_1l_4jet_e_channel ,norm);
scale(_count_1l_4jet_mu_channel ,norm);
scale(_count_1l_soft_all_channel ,norm);
scale(_count_1l_soft_e_channel ,norm);
scale(_count_1l_soft_mu_channel ,norm);
scale(_count_2l_2jet_all_channel ,norm);
scale(_count_2l_2jet_ee_channel ,norm);
scale(_count_2l_2jet_emu_channel ,norm);
scale(_count_2l_2jet_mumu_channel ,norm);
scale(_count_2l_4jet_all_channel ,norm);
scale(_count_2l_4jet_ee_channel ,norm);
scale(_count_2l_4jet_emu_channel ,norm);
scale(_count_2l_4jet_mumu_channel ,norm);
scale(_hist_1l_m_eff_3jet ,200.*norm);
scale(_hist_1l_m_eff_4jet ,200.*norm);
scale(_hist_1l_eTmiss_m_eff_soft ,0.1*norm);
scale(_hist_2l_m_eff_2jet ,200.*norm);
scale(_hist_2l_m_eff_4jet ,200.*norm);
}
private:
/// @name Histos
//@{
Histo1DPtr _count_1l_3jet_all_channel;
Histo1DPtr _count_1l_3jet_e_channel;
Histo1DPtr _count_1l_3jet_mu_channel;
Histo1DPtr _count_1l_4jet_all_channel;
Histo1DPtr _count_1l_4jet_e_channel;
Histo1DPtr _count_1l_4jet_mu_channel;
Histo1DPtr _count_1l_soft_all_channel;
Histo1DPtr _count_1l_soft_e_channel;
Histo1DPtr _count_1l_soft_mu_channel;
Histo1DPtr _count_2l_2jet_all_channel;
Histo1DPtr _count_2l_2jet_ee_channel;
Histo1DPtr _count_2l_2jet_emu_channel;
Histo1DPtr _count_2l_2jet_mumu_channel;
Histo1DPtr _count_2l_4jet_all_channel;
Histo1DPtr _count_2l_4jet_ee_channel;
Histo1DPtr _count_2l_4jet_emu_channel;
Histo1DPtr _count_2l_4jet_mumu_channel;
Histo1DPtr _hist_1l_m_eff_3jet;
Histo1DPtr _hist_1l_m_eff_4jet;
Histo1DPtr _hist_1l_eTmiss_m_eff_soft;
Histo1DPtr _hist_2l_m_eff_2jet;
Histo1DPtr _hist_2l_m_eff_4jet;
//@}
};
// The hook for the plugin system
RIVET_DECLARE_PLUGIN(ATLAS_2012_I1180197);
}
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