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ZMuMuAnalyzer.cc
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1 /* \class ZMuMuAnalyzer
2  *
3  * Z->mu+m- standard analysis for cross section
4  * measurements. Take as input the output of the
5  * standard EWK skim: zToMuMu
6  *
7  * Produces mass spectra and other histograms for
8  * the samples in input:
9  *
10  * + Z -> mu+mu-, both muons are "global" muons
11  * + Z -> mu+mu-, one muons is "global" muons, one unmatched tracks
12  * + Z -> mu+mu-, one muons is "global" muons, one unmatched stand-alone muon
13  *
14  *
15  * \author Michele de Gruttola, INFN Naples
16  *
17  *
18  */
19 #include "FWCore/Framework/interface/EDAnalyzer.h"
20 #include "FWCore/Utilities/interface/InputTag.h"
21 #include "FWCore/Framework/interface/Event.h"
22 #include "DataFormats/Common/interface/Handle.h"
23 #include "DataFormats/Candidate/interface/OverlapChecker.h"
24 #include "DataFormats/Candidate/interface/Particle.h"
25 #include "DataFormats/Candidate/interface/Candidate.h"
26 #include "DataFormats/Candidate/interface/CandMatchMap.h"
27 #include "FWCore/ServiceRegistry/interface/Service.h"
28 #include "CommonTools/UtilAlgos/interface/TFileService.h"
29 #include "FWCore/ParameterSet/interface/ParameterSet.h"
30 #include "DataFormats/Common/interface/AssociationVector.h"
31 #include "TH1.h"
32 #include <iostream>
33 #include <iterator>
34 using namespace edm;
35 using namespace std;
36 using namespace reco;
37 
38 typedef edm::AssociationVector<reco::CandidateRefProd, std::vector<double> > IsolationCollection;
39 
40 class ZMuMuAnalyzer : public edm::EDAnalyzer {
41 public:
42  ZMuMuAnalyzer(const edm::ParameterSet& pset);
43 
44 private:
45  void analyze(const edm::Event& event, const edm::EventSetup& setup) override;
46  void endJob() override;
47 
48  OverlapChecker overlap_;
49  EDGetTokenT<CandidateCollection> zMuMuToken_;
50  EDGetTokenT<CandidateCollection> zMuTrackToken_;
51  EDGetTokenT<CandidateCollection> zMuStandAloneToken_;
52  EDGetTokenT<IsolationCollection> muIsoToken_;
53  EDGetTokenT<IsolationCollection> trackIsoToken_;
54  EDGetTokenT<IsolationCollection> standAloneIsoToken_;
55  EDGetTokenT<CandMatchMap> zMuMuMapToken_;
56  EDGetTokenT<CandMatchMap> zMuTrackMapToken_;
57  EDGetTokenT<CandMatchMap> zMuStandAloneMapToken_;
58  double isocut_, etacut_, ptcut_, ptSTAcut_, minZmass_, maxZmass_;
59  TH1D *h_zMuMu_mass_, *h_zMuSingleTrack_mass_, *h_zMuSingleStandAlone_mass_, *h_zMuSingleStandAloneOverlap_mass_,
60  *h_zMuMuMatched_mass_, *h_zMuSingleTrackMatched_mass_, *h_zMuSingleStandAloneMatched_mass_,
61  *h_zMuSingleStandAloneOverlapMatched_mass_;
62 };
63 
64 ZMuMuAnalyzer::ZMuMuAnalyzer(const edm::ParameterSet& pset)
65  : zMuMuToken_(consumes<CandidateCollection>(pset.getParameter<InputTag>("zMuMu"))),
66  zMuTrackToken_(consumes<CandidateCollection>(pset.getParameter<InputTag>("zMuTrack"))),
67  zMuStandAloneToken_(consumes<CandidateCollection>(pset.getParameter<InputTag>("zMuStandAlone"))),
68  muIsoToken_(consumes<IsolationCollection>(pset.getParameter<InputTag>("muIso"))),
69  trackIsoToken_(consumes<IsolationCollection>(pset.getParameter<InputTag>("trackIso"))),
70  standAloneIsoToken_(consumes<IsolationCollection>(pset.getParameter<InputTag>("standAloneIso"))),
71  zMuMuMapToken_(mayConsume<CandMatchMap>(pset.getParameter<InputTag>("zMuMuMap"))),
72  zMuTrackMapToken_(mayConsume<CandMatchMap>(pset.getParameter<InputTag>("zMuTrackMap"))),
73  zMuStandAloneMapToken_(mayConsume<CandMatchMap>(pset.getParameter<InputTag>("zMuStandAloneMap"))),
74  isocut_(pset.getParameter<double>("isocut")),
75  etacut_(pset.getParameter<double>("etacut")),
76  ptcut_(pset.getParameter<double>("ptcut")),
77  ptSTAcut_(pset.getParameter<double>("ptSTAcut")),
78 
79  minZmass_(pset.getParameter<double>("minZmass")),
80  maxZmass_(pset.getParameter<double>("maxZmass")) {
81  Service<TFileService> fs;
82  h_zMuMu_mass_ = fs->make<TH1D>("ZMuMumass", "ZMuMu mass(GeV)", 200, 0., 200.);
83  h_zMuSingleTrack_mass_ = fs->make<TH1D>("ZMuSingleTrackmass", "ZMuSingleTrack mass(GeV)", 100, 0., 200.);
84  h_zMuSingleStandAlone_mass_ =
85  fs->make<TH1D>("ZMuSingleStandAlonemass", "ZMuSingleStandAlone mass(GeV)", 50, 0., 200.);
86  h_zMuSingleStandAloneOverlap_mass_ =
87  fs->make<TH1D>("ZMuSingleStandAloneOverlapmass", "ZMuSingleStandAloneOverlap mass(GeV)", 50, 0., 200.);
88 
89  h_zMuMuMatched_mass_ = fs->make<TH1D>("ZMuMuMatchedmass", "ZMuMu Matched mass(GeV)", 200, 0., 200.);
90  h_zMuSingleTrackMatched_mass_ =
91  fs->make<TH1D>("ZMuSingleTrackmassMatched", "ZMuSingleTrackMatched mass(GeV)", 100, 0., 200.);
92  h_zMuSingleStandAloneMatched_mass_ =
93  fs->make<TH1D>("ZMuSingleStandAlonemassMatched", "ZMuSingleStandAloneMatched mass(GeV)", 50, 0., 200.);
94  h_zMuSingleStandAloneOverlapMatched_mass_ = fs->make<TH1D>(
95  "ZMuSingleStandAloneOverlapmassMatched", "ZMuSingleStandAloneMatched Overlap mass(GeV)", 50, 0., 200.);
96 }
97 
98 void ZMuMuAnalyzer::analyze(const edm::Event& event, const edm::EventSetup& setup) {
99  Handle<CandidateCollection> zMuMu;
100  event.getByToken(zMuMuToken_, zMuMu);
101  Handle<CandidateCollection> zMuTrack;
102  event.getByToken(zMuTrackToken_, zMuTrack);
103  Handle<CandidateCollection> zMuStandAlone;
104  event.getByToken(zMuStandAloneToken_, zMuStandAlone);
105 
106  unsigned int nZMuMu = zMuMu->size();
107  unsigned int nZTrackMu = zMuTrack->size();
108  unsigned int nZStandAloneMu = zMuStandAlone->size();
109  static const double zMass = 91.1876; // PDG Z mass
110 
111  // cout << "nZMuMu = " << nZMuMu << endl;
112  // cout << "nZTrackMu = " << nZTrackMu << endl;
113  // cout << "nZStandAloneMu = " << nZStandAloneMu << endl;
114 
115  Handle<CandMatchMap> zMuMuMap;
116  if (nZMuMu > 0) {
117  event.getByToken(zMuMuMapToken_, zMuMuMap);
118  }
119 
120  Handle<CandMatchMap> zMuTrackMap;
121  if (nZTrackMu > 0) {
122  event.getByToken(zMuTrackMapToken_, zMuTrackMap);
123  }
124 
125  Handle<CandMatchMap> zMuStandAloneMap;
126  if (nZStandAloneMu > 0) {
127  event.getByToken(zMuStandAloneMapToken_, zMuStandAloneMap);
128  }
129 
130  Handle<IsolationCollection> muIso;
131  event.getByToken(muIsoToken_, muIso);
132  ProductID muIsoId = muIso->keyProduct().id();
133  Handle<IsolationCollection> trackIso;
134  event.getByToken(trackIsoToken_, trackIso);
135  ProductID trackIsoId = trackIso->keyProduct().id();
136 
137  Handle<IsolationCollection> standAloneIso;
138  event.getByToken(standAloneIsoToken_, standAloneIso);
139  ProductID standAloneIsoId = standAloneIso->keyProduct().id();
140 
141  if (nZMuMu > 0) {
142  double mass = 1000000.;
143  for (unsigned int i = 0; i < nZMuMu; i++) {
144  const Candidate& zmmCand = (*zMuMu)[i];
145  CandidateRef CandRef(zMuMu, i);
146  CandidateRef lep1 = zmmCand.daughter(0)->masterClone().castTo<CandidateRef>();
147  CandidateRef lep2 = zmmCand.daughter(1)->masterClone().castTo<CandidateRef>();
148 
149  const double iso1 = muIso->value(lep1.key());
150  const double iso2 = muIso->value(lep2.key());
151 
152  double m = zmmCand.mass();
153  if (lep1->pt() > ptcut_ && lep2->pt() > ptcut_ && fabs(lep1->eta()) < etacut_ && fabs(lep2->eta()) < etacut_ &&
154  m > minZmass_ && m < maxZmass_ && iso1 < isocut_ && iso2 < isocut_) {
155  if (fabs(mass - zMass) > fabs(m - zMass)) {
156  mass = m;
157  }
158 
159  h_zMuMu_mass_->Fill(mass);
160  CandMatchMap::const_iterator m0 = zMuMuMap->find(CandRef);
161  if (m0 != zMuMuMap->end()) {
162  h_zMuMuMatched_mass_->Fill(mass);
163  }
164  }
165  }
166  }
167 
168  //ZmuSingleTRack
169  if (nZMuMu == 0 && nZTrackMu > 0) {
170  for (unsigned int j = 0; j < nZTrackMu; j++) {
171  const Candidate& ztmCand = (*zMuTrack)[j];
172  CandidateRef CandRef(zMuTrack, j);
173  CandidateRef lep1 = ztmCand.daughter(0)->masterClone().castTo<CandidateRef>();
174  CandidateRef lep2 = ztmCand.daughter(1)->masterClone().castTo<CandidateRef>();
175 
176  ProductID id1 = lep1.id();
177  ProductID id2 = lep2.id();
178  double iso1 = -1;
179  double iso2 = -1;
180 
181  if (id1 == muIsoId)
182  iso1 = muIso->value(lep1.key());
183  else if (id1 == trackIsoId)
184  iso1 = trackIso->value(lep1.key());
185 
186  if (id2 == muIsoId)
187  iso2 = muIso->value(lep2.key());
188  else if (id2 == trackIsoId)
189  iso2 = trackIso->value(lep2.key());
190 
191  double mt = ztmCand.mass();
192  if (lep1->pt() > ptcut_ && lep2->pt() > ptcut_ && fabs(lep1->eta()) < etacut_ && fabs(lep2->eta()) < etacut_ &&
193  mt > minZmass_ && mt < maxZmass_ && iso1 < isocut_ && iso2 < isocut_) {
194  h_zMuSingleTrack_mass_->Fill(mt);
195  CandMatchMap::const_iterator m0 = zMuTrackMap->find(CandRef);
196  if (m0 != zMuTrackMap->end()) {
197  h_zMuSingleTrackMatched_mass_->Fill(mt);
198  }
199  }
200  }
201  }
202 
203  //ZmuSingleStandAlone
204  if (nZMuMu == 0 && nZStandAloneMu > 0) {
205  // unsigned int index = 1000;
206  for (unsigned int j = 0; j < nZStandAloneMu; j++) {
207  const Candidate& zsmCand = (*zMuStandAlone)[j];
208  CandidateRef CandRef(zMuStandAlone, j);
209  CandidateRef lep1 = zsmCand.daughter(0)->masterClone().castTo<CandidateRef>();
210  CandidateRef lep2 = zsmCand.daughter(1)->masterClone().castTo<CandidateRef>();
211 
212  ProductID id1 = lep1.id();
213  ProductID id2 = lep2.id();
214  double iso1 = -1;
215  double iso2 = -1;
216 
217  if (id1 == muIsoId)
218  iso1 = muIso->value(lep1.key());
219  else if (id1 == standAloneIsoId)
220  iso1 = standAloneIso->value(lep1.key());
221 
222  if (id2 == muIsoId)
223  iso2 = muIso->value(lep2.key());
224  else if (id2 == standAloneIsoId)
225  iso2 = standAloneIso->value(lep2.key());
226 
227  double ms = zsmCand.mass();
228  if (lep1->pt() > ptSTAcut_ && lep2->pt() > ptSTAcut_ && fabs(lep1->eta()) < etacut_ &&
229  fabs(lep2->eta()) < etacut_ && ms > minZmass_ && ms < maxZmass_ && iso1 < isocut_ && iso2 < isocut_) {
230  h_zMuSingleStandAlone_mass_->Fill(ms);
231  CandMatchMap::const_iterator m0 = zMuStandAloneMap->find(CandRef);
232  if (m0 != zMuStandAloneMap->end()) {
233  h_zMuSingleStandAloneMatched_mass_->Fill(ms);
234  }
235 
236  bool noOverlap = true;
237  for (unsigned int j = 0; j < zMuTrack->size(); j++) {
238  const Candidate& ztmCand = (*zMuTrack)[j];
239  CandidateRef CandReft(zMuTrack, j);
240 
241  CandidateRef lep1 = ztmCand.daughter(0)->masterClone().castTo<CandidateRef>();
242  CandidateRef lep2 = ztmCand.daughter(1)->masterClone().castTo<CandidateRef>();
243 
244  ProductID id1 = lep1.id();
245  ProductID id2 = lep2.id();
246  double iso1 = -1;
247  double iso2 = -1;
248 
249  if (id1 == muIsoId)
250  iso1 = muIso->value(lep1.key());
251  else if (id1 == trackIsoId)
252  iso1 = trackIso->value(lep1.key());
253 
254  if (id2 == muIsoId)
255  iso2 = muIso->value(lep2.key());
256  else if (id2 == trackIsoId)
257  iso2 = trackIso->value(lep2.key());
258 
259  double mt = ztmCand.mass();
260  if (lep1->pt() > ptcut_ && lep2->pt() > ptcut_ && fabs(lep1->eta()) < etacut_ &&
261  fabs(lep2->eta()) < etacut_ && mt > minZmass_ && mt < maxZmass_ && iso1 < isocut_ && iso2 < isocut_) {
262  if (overlap_(ztmCand, zsmCand)) {
263  noOverlap = false;
264  break;
265  }
266  if (!noOverlap) {
267  h_zMuSingleStandAloneOverlap_mass_->Fill(ms);
268  CandMatchMap::const_iterator m1 = zMuTrackMap->find(CandReft);
269  CandMatchMap::const_iterator m2 = zMuStandAloneMap->find(CandRef);
270 
271  if (m1 != zMuTrackMap->end() && m2 != zMuStandAloneMap->end()) {
272  h_zMuSingleStandAloneOverlapMatched_mass_->Fill(ms);
273  }
274  }
275  }
276  }
277  }
278  }
279  }
280 }
281 
282 void ZMuMuAnalyzer::endJob() {
283  double Nzmm = h_zMuMu_mass_->GetEntries();
284  double Nzsm = h_zMuSingleStandAlone_mass_->GetEntries();
285  double Nzsnom = h_zMuSingleStandAloneOverlap_mass_->GetEntries();
286  double Nztm = h_zMuSingleTrack_mass_->GetEntries();
287 
288  double NzmmMatch = h_zMuMuMatched_mass_->GetEntries();
289  double NzsmMatch = h_zMuSingleStandAloneMatched_mass_->GetEntries();
290  double NzsnomMatch = h_zMuSingleStandAloneOverlapMatched_mass_->GetEntries();
291  double NztmMatch = h_zMuSingleTrackMatched_mass_->GetEntries();
292 
293  cout << "-- N SingleTrackMu = " << Nztm << endl;
294  cout << "-----N SinglStandAloneMu = " << Nzsm << endl;
295  cout << "-----N SingleStandAloneOverlapMu = " << Nzsnom << endl;
296  cout << "------- N MuMu = " << Nzmm << endl;
297 
298  cout << "-- N SingleTrackMuMatched = " << NztmMatch << endl;
299  cout << "-----N SinglStandAloneMuMatched = " << NzsmMatch << endl;
300  cout << "-----N SingleStandAloneOverlapMuMatched = " << NzsnomMatch << endl;
301  cout << "------- N MuMu Matched = " << NzmmMatch << endl;
302 }
303 
304 #include "FWCore/Framework/interface/MakerMacros.h"
305 
306 DEFINE_FWK_MODULE(ZMuMuAnalyzer);
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