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| // -*- C++ -*-
#include "Rivet/Analysis.hh"
#include "Rivet/Projections/FinalState.hh"
#include "Rivet/Projections/FastJets.hh"
#include "Rivet/Projections/WFinder.hh"
#include "Rivet/Projections/ZFinder.hh"
#include "fastjet/tools/Filter.hh"
#include "fastjet/tools/Pruner.hh"
namespace Rivet {
class CMS_2013_I1224539 : public Analysis {
public:
/// @name Constructors etc.
//@{
/// Constructor
CMS_2013_I1224539()
: Analysis("CMS_2013_I1224539"),
_filter(fastjet::Filter(fastjet::JetDefinition(fastjet::cambridge_algorithm, 0.3), fastjet::SelectorNHardest(3))),
_trimmer(fastjet::Filter(fastjet::JetDefinition(fastjet::kt_algorithm, 0.2), fastjet::SelectorPtFractionMin(0.03))),
_pruner(fastjet::Pruner(fastjet::cambridge_algorithm, 0.1, 0.5))
{ }
//@}
public:
/// @name Analysis methods
//@{
/// Book histograms and initialise projections before the run
void init() {
// Get options
WJET = true;
ZJET = true;
DIJET = true;
if ( getOption("JMODE") == "W" ) {
ZJET = false;
DIJET = false;
}
if ( getOption("JMODE") == "Z" ) {
WJET = false;
DIJET = false;
}
if ( getOption("JMODE") == "DIJET" ) {
WJET = false;
ZJET = false;
}
FinalState fs(Cuts::abseta < 2.4);
declare(fs, "FS");
if (WJET) {
// filling W+jet histos
// Find W's with pT > 120, MET > 50
WFinder wfinder(fs, Cuts::abseta < 2.4 && Cuts::pT > 80*GeV, PID::ELECTRON, 50*GeV, 1000*GeV, 50.0*GeV,
0.2, WFinder::ChargedLeptons::PROMPT, WFinder::ClusterPhotons::NODECAY, WFinder::AddPhotons::NO, WFinder::MassWindow::MT);
declare(wfinder, "WFinder");
// W+jet jet collections
declare(FastJets(wfinder.remainingFinalState(), FastJets::ANTIKT, 0.7), "JetsAK7_wj");
declare(FastJets(wfinder.remainingFinalState(), FastJets::CAM, 0.8), "JetsCA8_wj");
declare(FastJets(wfinder.remainingFinalState(), FastJets::CAM, 1.2), "JetsCA12_wj");
// Histograms
/// @note These are 2D histos rendered into slices
const int wjetsOffset = 51;
for (size_t i = 0; i < N_PT_BINS_vj; ++i) {
book(_h_ungroomedJetMass_AK7_wj[i] ,wjetsOffset+i+1+0*N_PT_BINS_vj, 1, 1);
book(_h_filteredJetMass_AK7_wj[i] ,wjetsOffset+i+1+1*N_PT_BINS_vj, 1, 1);
book(_h_trimmedJetMass_AK7_wj[i] ,wjetsOffset+i+1+2*N_PT_BINS_vj, 1, 1);
book(_h_prunedJetMass_AK7_wj[i] ,wjetsOffset+i+1+3*N_PT_BINS_vj, 1, 1);
book(_h_prunedJetMass_CA8_wj[i] ,wjetsOffset+i+1+4*N_PT_BINS_vj, 1, 1);
if (i > 0) book(_h_filteredJetMass_CA12_wj[i] ,wjetsOffset+i+5*N_PT_BINS_vj, 1, 1);
}
}
if (ZJET) {
// filling Z+jet histos
// Find Zs with pT > 120 GeV
ZFinder zfinder(fs, Cuts::abseta < 2.4 && Cuts::pT > 30*GeV, PID::ELECTRON, 80*GeV, 100*GeV,
0.2, ZFinder::ClusterPhotons::NODECAY, ZFinder::AddPhotons::YES);
declare(zfinder, "ZFinder");
// Z+jet jet collections
declare(FastJets(zfinder.remainingFinalState(), FastJets::ANTIKT, 0.7), "JetsAK7_zj");
declare(FastJets(zfinder.remainingFinalState(), FastJets::CAM, 0.8), "JetsCA8_zj");
declare(FastJets(zfinder.remainingFinalState(), FastJets::CAM, 1.2), "JetsCA12_zj");
// Histograms
/// @note These are 2D histos rendered into slices
const int zjetsOffset = 28;
for (size_t i = 0; i < N_PT_BINS_vj; ++i ) {
book(_h_ungroomedJetMass_AK7_zj[i] ,zjetsOffset+i+1+0*N_PT_BINS_vj, 1, 1);
book(_h_filteredJetMass_AK7_zj[i] ,zjetsOffset+i+1+1*N_PT_BINS_vj,1,1);
book(_h_trimmedJetMass_AK7_zj[i] ,zjetsOffset+i+1+2*N_PT_BINS_vj,1,1);
book(_h_prunedJetMass_AK7_zj[i] ,zjetsOffset+i+1+3*N_PT_BINS_vj,1,1);
book(_h_prunedJetMass_CA8_zj[i] ,zjetsOffset+i+1+4*N_PT_BINS_vj,1,1);
if (i > 0) book(_h_filteredJetMass_CA12_zj[i] ,zjetsOffset+i+5*N_PT_BINS_vj,1,1);
}
}
if (DIJET){
// Jet collections
declare(FastJets(fs, FastJets::ANTIKT, 0.7), "JetsAK7");
declare(FastJets(fs, FastJets::CAM, 0.8), "JetsCA8");
declare(FastJets(fs, FastJets::CAM, 1.2), "JetsCA12");
// Histograms
for (size_t i = 0; i < N_PT_BINS_dj; ++i ) {
book(_h_ungroomedAvgJetMass_dj[i] ,i+1+0*N_PT_BINS_dj, 1, 1);
book(_h_filteredAvgJetMass_dj[i] ,i+1+1*N_PT_BINS_dj, 1, 1);
book(_h_trimmedAvgJetMass_dj[i] ,i+1+2*N_PT_BINS_dj, 1, 1);
book(_h_prunedAvgJetMass_dj[i] ,i+1+3*N_PT_BINS_dj, 1, 1);
}
}
}
bool isBackToBack_wj(const WFinder& wf, const fastjet::PseudoJet& psjet) {
const FourMomentum w = wf.bosons()[0];
const FourMomentum l1 = wf.constituentLeptons()[0];
const FourMomentum l2 = wf.constituentNeutrinos()[0];
/// @todo We should make FourMomentum know how to construct itself from a PseudoJet
const FourMomentum jmom(psjet.e(), psjet.px(), psjet.py(), psjet.pz());
return (deltaPhi(w, jmom) > 2.0 && deltaR(l1, jmom) > 1.0 && deltaPhi(l2, jmom) > 0.4);
}
bool isBackToBack_zj(const ZFinder& zf, const fastjet::PseudoJet& psjet) {
const FourMomentum& z = zf.bosons()[0].momentum();
const FourMomentum& l1 = zf.constituents()[0].momentum();
const FourMomentum& l2 = zf.constituents()[1].momentum();
/// @todo We should make FourMomentum know how to construct itself from a PseudoJet
const FourMomentum jmom(psjet.e(), psjet.px(), psjet.py(), psjet.pz());
return (deltaPhi(z, jmom) > 2.0 && deltaR(l1, jmom) > 1.0 && deltaR(l2, jmom) > 1.0);
}
// Find the pT histogram bin index for value pt (in GeV), to hack a 2D histogram equivalent
/// @todo Use a YODA axis/finder alg when available
size_t findPtBin_vj(double ptJ) {
const double ptBins_vj[N_PT_BINS_vj+1] = { 125.0, 150.0, 220.0, 300.0, 450.0 };
for (size_t ibin = 0; ibin < N_PT_BINS_vj; ++ibin) {
if (inRange(ptJ, ptBins_vj[ibin], ptBins_vj[ibin+1])) return ibin;
}
return N_PT_BINS_vj;
}
// Find the pT histogram bin index for value pt (in GeV), to hack a 2D histogram equivalent
/// @todo Use a YODA axis/finder alg when available
size_t findPtBin_jj(double ptJ) {
const double ptBins_dj[N_PT_BINS_dj+1] = { 220.0, 300.0, 450.0, 500.0, 600.0, 800.0, 1000.0, 1500.0};
for (size_t ibin = 0; ibin < N_PT_BINS_dj; ++ibin) {
if (inRange(ptJ, ptBins_dj[ibin], ptBins_dj[ibin+1])) return ibin;
}
return N_PT_BINS_dj;
}
/// Perform the per-event analysis
void analyze(const Event& event) {
const double weight = 1.0;
if (WJET) {
// Get the W
const WFinder& wfinder = apply<WFinder>(event, "WFinder");
if (wfinder.bosons().size() == 1) {
const Particle w = wfinder.bosons()[0];
const Particle l = wfinder.constituentLeptons()[0];
// Require a fairly high-pT W and charged lepton
if (l.pT() >= 80*GeV && w.pT() >= 120*GeV) {
// Get the pseudojets.
const PseudoJets psjetsCA8_wj = apply<FastJets>(event, "JetsCA8_wj").pseudoJetsByPt( 50.0*GeV );
const PseudoJets psjetsCA12_wj = apply<FastJets>(event, "JetsCA12_wj").pseudoJetsByPt( 50.0*GeV );
// AK7 jets
const PseudoJets psjetsAK7_wj = apply<FastJets>(event, "JetsAK7_wj").pseudoJetsByPt( 50.0*GeV );
if (!psjetsAK7_wj.empty()) {
// Get the leading jet and make sure it's back-to-back with the W
const fastjet::PseudoJet& j0 = psjetsAK7_wj[0];
if (isBackToBack_wj(wfinder, j0)) {
const size_t njetBin = findPtBin_vj(j0.pt()/GeV);
if (njetBin < N_PT_BINS_vj) {
fastjet::PseudoJet filtered0 = _filter(j0);
fastjet::PseudoJet trimmed0 = _trimmer(j0);
fastjet::PseudoJet pruned0 = _pruner(j0);
_h_ungroomedJetMass_AK7_wj[njetBin]->fill(j0.m()/GeV, weight);
_h_filteredJetMass_AK7_wj[njetBin]->fill(filtered0.m()/GeV, weight);
_h_trimmedJetMass_AK7_wj[njetBin]->fill(trimmed0.m()/GeV, weight);
_h_prunedJetMass_AK7_wj[njetBin]->fill(pruned0.m()/GeV, weight);
}
}
}
// CA8 jets
if (!psjetsCA8_wj.empty()) {
// Get the leading jet and make sure it's back-to-back with the W
const fastjet::PseudoJet& j0 = psjetsCA8_wj[0];
if (isBackToBack_wj(wfinder, j0)) {
const size_t njetBin = findPtBin_vj(j0.pt()/GeV);
if (njetBin < N_PT_BINS_vj) {
fastjet::PseudoJet pruned0 = _pruner(j0);
_h_prunedJetMass_CA8_wj[njetBin]->fill(pruned0.m()/GeV, weight);
}
}
}
// CA12 jets
if (!psjetsCA12_wj.empty()) {
// Get the leading jet and make sure it's back-to-back with the W
const fastjet::PseudoJet& j0 = psjetsCA12_wj[0];
if (isBackToBack_wj(wfinder, j0)) {
const size_t njetBin = findPtBin_vj(j0.pt()/GeV);
if (njetBin < N_PT_BINS_vj&&njetBin>0) {
fastjet::PseudoJet filtered0 = _filter(j0);
_h_filteredJetMass_CA12_wj[njetBin]->fill( filtered0.m() / GeV, weight);
}
}
}
}
}
}
if (ZJET) {
// Get the Z
const ZFinder& zfinder = apply<ZFinder>(event, "ZFinder");
if (zfinder.bosons().size() == 1) {
const Particle& z = zfinder.bosons()[0];
if (z.constituents().size() < 2) {
MSG_WARNING("Found a Z with less than 2 constituents.");
vetoEvent;
}
const Particle& l1 = z.constituents()[0];
const Particle& l2 = z.constituents()[1];
MSG_DEBUG(l1.pT() << " " << l2.pT());
assert(&l1 != &l2);
// Require a high-pT Z (and constituents)
if (l1.pT() >= 30*GeV && l2.pT() >= 30*GeV && z.pT() >= 120*GeV) {
// AK7 jets
const PseudoJets& psjetsAK7_zj = apply<FastJets>(event, "JetsAK7_zj").pseudoJetsByPt(50.0*GeV);
if (!psjetsAK7_zj.empty()) {
// Get the leading jet and make sure it's back-to-back with the Z
const fastjet::PseudoJet& j0 = psjetsAK7_zj[0];
if (isBackToBack_zj(zfinder, j0)) {
const size_t njetBin = findPtBin_vj(j0.pt()/GeV);
if (njetBin < N_PT_BINS_vj) {
fastjet::PseudoJet filtered0 = _filter(j0);
fastjet::PseudoJet trimmed0 = _trimmer(j0);
fastjet::PseudoJet pruned0 = _pruner(j0);
_h_ungroomedJetMass_AK7_zj[njetBin]->fill(j0.m()/GeV, weight);
_h_filteredJetMass_AK7_zj[njetBin]->fill(filtered0.m()/GeV, weight);
_h_trimmedJetMass_AK7_zj[njetBin]->fill(trimmed0.m()/GeV, weight);
_h_prunedJetMass_AK7_zj[njetBin]->fill(pruned0.m()/GeV, weight);
}
}
}
// CA8 jets
const PseudoJets& psjetsCA8_zj = apply<FastJets>(event, "JetsCA8_zj").pseudoJetsByPt(50.0*GeV);
if (!psjetsCA8_zj.empty()) {
// Get the leading jet and make sure it's back-to-back with the Z
const fastjet::PseudoJet& j0 = psjetsCA8_zj[0];
if (isBackToBack_zj(zfinder, j0)) {
const size_t njetBin = findPtBin_vj(j0.pt()/GeV);
if (njetBin < N_PT_BINS_vj) {
fastjet::PseudoJet pruned0 = _pruner(j0);
_h_prunedJetMass_CA8_zj[njetBin]->fill(pruned0.m()/GeV, weight);
}
}
}
// CA12 jets
const PseudoJets& psjetsCA12_zj = apply<FastJets>(event, "JetsCA12_zj").pseudoJetsByPt(50.0*GeV);
if (!psjetsCA12_zj.empty()) {
// Get the leading jet and make sure it's back-to-back with the Z
const fastjet::PseudoJet& j0 = psjetsCA12_zj[0];
if (isBackToBack_zj(zfinder, j0)) {
const size_t njetBin = findPtBin_vj(j0.pt()/GeV);
if (njetBin>0 && njetBin < N_PT_BINS_vj) {
fastjet::PseudoJet filtered0 = _filter(j0);
_h_filteredJetMass_CA12_zj[njetBin]->fill( filtered0.m() / GeV, weight);
}
}
}
}
}
}
if (DIJET) {
// Look at events with >= 2 jets
const PseudoJets& psjetsAK7 = apply<FastJets>(event, "JetsAK7").pseudoJetsByPt( 50.0*GeV );
if (psjetsAK7.size() >= 2) {
// Get the leading two jets and find their average pT
const fastjet::PseudoJet& j0 = psjetsAK7[0];
const fastjet::PseudoJet& j1 = psjetsAK7[1];
double ptAvg = 0.5 * (j0.pt() + j1.pt());
// Find the appropriate mean pT bin and escape if needed
const size_t njetBin = findPtBin_jj(ptAvg/GeV);
if (njetBin < N_PT_BINS_dj) {
// Now run the substructure algs...
fastjet::PseudoJet filtered0 = _filter(j0);
fastjet::PseudoJet filtered1 = _filter(j1);
fastjet::PseudoJet trimmed0 = _trimmer(j0);
fastjet::PseudoJet trimmed1 = _trimmer(j1);
fastjet::PseudoJet pruned0 = _pruner(j0);
fastjet::PseudoJet pruned1 = _pruner(j1);
// ... and fill the histograms
_h_ungroomedAvgJetMass_dj[njetBin]->fill(0.5*(j0.m() + j1.m())/GeV, weight);
_h_filteredAvgJetMass_dj[njetBin]->fill(0.5*(filtered0.m() + filtered1.m())/GeV, weight);
_h_trimmedAvgJetMass_dj[njetBin]->fill(0.5*(trimmed0.m() + trimmed1.m())/GeV, weight);
_h_prunedAvgJetMass_dj[njetBin]->fill(0.5*(pruned0.m() + pruned1.m())/GeV, weight);
}
}
}
}
/// Normalise histograms etc., after the run
void finalize() {
const double normalizationVal = 1000;
for (size_t i = 0; i < N_PT_BINS_vj; ++i) {
if (WJET) {
normalize(_h_ungroomedJetMass_AK7_wj[i], normalizationVal);
normalize(_h_filteredJetMass_AK7_wj[i], normalizationVal);
normalize(_h_trimmedJetMass_AK7_wj[i], normalizationVal);
normalize(_h_prunedJetMass_AK7_wj[i], normalizationVal);
normalize(_h_prunedJetMass_CA8_wj[i], normalizationVal);
if (i > 0) normalize( _h_filteredJetMass_CA12_wj[i], normalizationVal);
}
if (ZJET) {
normalize( _h_ungroomedJetMass_AK7_zj[i], normalizationVal);
normalize( _h_filteredJetMass_AK7_zj[i], normalizationVal);
normalize( _h_trimmedJetMass_AK7_zj[i], normalizationVal);
normalize( _h_prunedJetMass_AK7_zj[i], normalizationVal);
normalize( _h_prunedJetMass_CA8_zj[i], normalizationVal);
if (i > 0) normalize( _h_filteredJetMass_CA12_zj[i], normalizationVal);
}
}
if (DIJET) {
for (size_t i = 0; i < N_PT_BINS_dj; ++i) {
normalize(_h_ungroomedAvgJetMass_dj[i], normalizationVal);
normalize(_h_filteredAvgJetMass_dj[i], normalizationVal);
normalize(_h_trimmedAvgJetMass_dj[i], normalizationVal);
normalize(_h_prunedAvgJetMass_dj[i], normalizationVal);
}
}
}
//@}
protected:
bool WJET, ZJET, DIJET;
private:
/// @name FastJet grooming tools (configured in constructor init list)
//@{
const fastjet::Filter _filter;
const fastjet::Filter _trimmer;
const fastjet::Pruner _pruner;
//@}
/// @name Histograms
//@{
enum BINS_vj { PT_125_150_vj=0, PT_150_220_vj, PT_220_300_vj, PT_300_450_vj, N_PT_BINS_vj };
// W+jet
Histo1DPtr _h_ungroomedJetMass_AK7_wj[N_PT_BINS_vj];
Histo1DPtr _h_filteredJetMass_AK7_wj[N_PT_BINS_vj];
Histo1DPtr _h_trimmedJetMass_AK7_wj[N_PT_BINS_vj];
Histo1DPtr _h_prunedJetMass_AK7_wj[N_PT_BINS_vj];
Histo1DPtr _h_prunedJetMass_CA8_wj[N_PT_BINS_vj];
Histo1DPtr _h_filteredJetMass_CA12_wj[N_PT_BINS_vj];
//Z+jet
Histo1DPtr _h_ungroomedJetMass_AK7_zj[N_PT_BINS_vj];
Histo1DPtr _h_filteredJetMass_AK7_zj[N_PT_BINS_vj];
Histo1DPtr _h_trimmedJetMass_AK7_zj[N_PT_BINS_vj];
Histo1DPtr _h_prunedJetMass_AK7_zj[N_PT_BINS_vj];
Histo1DPtr _h_prunedJetMass_CA8_zj[N_PT_BINS_vj];
Histo1DPtr _h_filteredJetMass_CA12_zj[N_PT_BINS_vj];
// DIJET
enum BINS_dj { PT_220_300_dj=0, PT_300_450_dj, PT_450_500_dj, PT_500_600_dj,
PT_600_800_dj, PT_800_1000_dj, PT_1000_1500_dj, N_PT_BINS_dj };
Histo1DPtr _h_ungroomedJet0pt, _h_ungroomedJet1pt;
Histo1DPtr _h_ungroomedAvgJetMass_dj[N_PT_BINS_dj];
Histo1DPtr _h_filteredAvgJetMass_dj[N_PT_BINS_dj];
Histo1DPtr _h_trimmedAvgJetMass_dj[N_PT_BINS_dj];
Histo1DPtr _h_prunedAvgJetMass_dj[N_PT_BINS_dj];
//@}
};
// The hook for the plugin system
RIVET_DECLARE_PLUGIN(CMS_2013_I1224539);
}
|