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root/cvsroot/UserCode/MitProd/TreeFiller/src/FillerElectrons.cc
Revision: 1.45
Committed: Wed Jun 23 09:02:45 2010 UTC (14 years, 10 months ago) by bendavid
Content type: text/plain
Branch: MAIN
Changes since 1.44: +16 -1 lines
Log Message:
some extra conversion variables

File Contents

# User Rev Content
1 bendavid 1.45 // $Id: FillerElectrons.cc,v 1.44 2010/05/29 11:58:28 bendavid Exp $
2 loizides 1.1
3     #include "MitProd/TreeFiller/interface/FillerElectrons.h"
4     #include "DataFormats/TrackReco/interface/Track.h"
5     #include "DataFormats/GsfTrackReco/interface/GsfTrack.h"
6     #include "DataFormats/TrackReco/interface/TrackFwd.h"
7 sixie 1.11 #include "DataFormats/EgammaCandidates/interface/GsfElectron.h"
8     #include "DataFormats/EgammaCandidates/interface/GsfElectronFwd.h"
9     #include "DataFormats/EgammaReco/interface/ClusterShape.h"
10     #include "DataFormats/EgammaReco/interface/BasicClusterShapeAssociation.h"
11 bendavid 1.18 #include "DataFormats/Common/interface/RefToPtr.h"
12 loizides 1.35 #include "DataFormats/Common/interface/ValueMap.h"
13     #include "AnalysisDataFormats/Egamma/interface/ElectronID.h"
14     #include "AnalysisDataFormats/Egamma/interface/ElectronIDAssociation.h"
15 sixie 1.11 #include "RecoEgamma/EgammaIsolationAlgos/interface/ElectronTkIsolation.h"
16     #include "RecoEgamma/EgammaIsolationAlgos/interface/EgammaEcalIsolation.h"
17 sixie 1.14 #include "RecoEgamma/EgammaIsolationAlgos/interface/EgammaTowerIsolation.h"
18 loizides 1.35 #include "RecoEcal/EgammaCoreTools/interface/EcalClusterLazyTools.h"
19 bendavid 1.43 #include "DataFormats/VertexReco/interface/VertexFwd.h"
20     #include "TrackingTools/TransientTrack/interface/TransientTrackBuilder.h"
21     #include "TrackingTools/TransientTrack/plugins/TransientTrackBuilderESProducer.h"
22 bendavid 1.44 #include "RecoVertex/GaussianSumVertexFit/interface/GsfVertexTrackCompatibilityEstimator.h"
23 bendavid 1.43 #include "TrackingTools/IPTools/interface/IPTools.h"
24     #include "RecoEgamma/EgammaTools/interface/ConversionFinder.h"
25     #include "MagneticField/Records/interface/IdealMagneticFieldRecord.h"
26     #include "MagneticField/Engine/interface/MagneticField.h"
27 loizides 1.35 #include "MitAna/DataTree/interface/ElectronCol.h"
28     #include "MitAna/DataTree/interface/Names.h"
29     #include "MitAna/DataTree/interface/Track.h"
30 loizides 1.33 #include "MitEdm/DataFormats/interface/RefToBaseToPtr.h"
31 loizides 1.35 #include "MitProd/ObjectService/interface/ObjectService.h"
32 bendavid 1.45 #include "MitEdm/DataFormats/interface/DecayPart.h"
33     #include "MitEdm/ConversionRejection/interface/ConversionMatcher.h"
34 sixie 1.13
35 loizides 1.1 using namespace std;
36     using namespace edm;
37     using namespace mithep;
38    
39 loizides 1.5 //--------------------------------------------------------------------------------------------------
40 loizides 1.28 FillerElectrons::FillerElectrons(const edm::ParameterSet &cfg, const char *name, bool active) :
41     BaseFiller(cfg,name,active),
42 loizides 1.1 edmName_(Conf().getUntrackedParameter<string>("edmName","pixelMatchGsfElectrons")),
43     mitName_(Conf().getUntrackedParameter<string>("mitName",Names::gkElectronBrn)),
44 loizides 1.10 gsfTrackMapName_(Conf().getUntrackedParameter<string>("gsfTrackMapName","")),
45     trackerTrackMapName_(Conf().getUntrackedParameter<string>("trackerTrackMapName","")),
46 sixie 1.12 barrelSuperClusterMapName_(Conf().getUntrackedParameter<string>("barrelSuperClusterMapName","")),
47     endcapSuperClusterMapName_(Conf().getUntrackedParameter<string>("endcapSuperClusterMapName","")),
48 bendavid 1.36 pfSuperClusterMapName_(Conf().getUntrackedParameter<string>("pfSuperClusterMapName","")),
49 loizides 1.16 eIDCutBasedTightName_(Conf().getUntrackedParameter<string>("eIDCutBasedTightName","eidTight")),
50 bendavid 1.43 eIDCutBasedLooseName_(Conf().getUntrackedParameter<string>("eIDCutBasedLooseName","eidLoose")),
51     pvEdmName_(Conf().getUntrackedParameter<string>("pvEdmName","offlinePrimaryVertices")),
52     pvBSEdmName_(Conf().getUntrackedParameter<string>("pvEdmName","offlinePrimaryVerticesWithBS")),
53 loizides 1.8 electrons_(new mithep::ElectronArr(16)),
54 loizides 1.10 gsfTrackMap_(0),
55 sixie 1.11 trackerTrackMap_(0),
56 sixie 1.12 barrelSuperClusterMap_(0),
57     endcapSuperClusterMap_(0)
58 loizides 1.1 {
59     // Constructor.
60     }
61    
62 loizides 1.5 //--------------------------------------------------------------------------------------------------
63 loizides 1.1 FillerElectrons::~FillerElectrons()
64     {
65     // Destructor.
66 loizides 1.6
67     delete electrons_;
68 loizides 1.1 }
69    
70 loizides 1.5 //--------------------------------------------------------------------------------------------------
71 bendavid 1.42 void FillerElectrons::BookDataBlock(TreeWriter &tws)
72 loizides 1.1 {
73 loizides 1.10 // Add electron branch to our tree and get our maps.
74 loizides 1.1
75 loizides 1.29 tws.AddBranch(mitName_,&electrons_);
76     OS()->add<mithep::ElectronArr>(electrons_,mitName_);
77 loizides 1.10
78 loizides 1.29 if (!gsfTrackMapName_.empty()) {
79     gsfTrackMap_ = OS()->get<TrackMap>(gsfTrackMapName_);
80     if (gsfTrackMap_)
81     AddBranchDep(mitName_,gsfTrackMap_->GetBrName());
82     }
83     if (!trackerTrackMapName_.empty()) {
84     trackerTrackMap_ = OS()->get<TrackMap>(trackerTrackMapName_);
85     if (trackerTrackMap_)
86     AddBranchDep(mitName_,trackerTrackMap_->GetBrName());
87     }
88     if (!barrelSuperClusterMapName_.empty()) {
89     barrelSuperClusterMap_ = OS()->get<SuperClusterMap>(barrelSuperClusterMapName_);
90     if (barrelSuperClusterMap_)
91     AddBranchDep(mitName_,barrelSuperClusterMap_->GetBrName());
92     }
93     if (!endcapSuperClusterMapName_.empty()) {
94     endcapSuperClusterMap_ = OS()->get<SuperClusterMap>(endcapSuperClusterMapName_);
95     if (endcapSuperClusterMap_)
96     AddBranchDep(mitName_,endcapSuperClusterMap_->GetBrName());
97     }
98 bendavid 1.36 if (!pfSuperClusterMapName_.empty()) {
99     pfSuperClusterMap_ = OS()->get<SuperClusterMap>(pfSuperClusterMapName_);
100     if (pfSuperClusterMap_)
101     AddBranchDep(mitName_,pfSuperClusterMap_->GetBrName());
102     }
103 loizides 1.1 }
104    
105 loizides 1.5 //--------------------------------------------------------------------------------------------------
106 loizides 1.29 void FillerElectrons::FillDataBlock(const edm::Event &event, const edm::EventSetup &setup)
107 loizides 1.1 {
108     // Fill electrons from edm collection into our collection.
109    
110 bendavid 1.26 electrons_->Delete();
111 loizides 1.1
112 sixie 1.11 Handle<reco::GsfElectronCollection> hElectronProduct;
113 loizides 1.7 GetProduct(edmName_, hElectronProduct, event);
114 loizides 1.1
115 loizides 1.29 // handles to get the electron ID information
116 sixie 1.13 Handle<edm::ValueMap<float> > eidLooseMap;
117     GetProduct(eIDCutBasedLooseName_, eidLooseMap, event);
118     Handle<edm::ValueMap<float> > eidTightMap;
119     GetProduct(eIDCutBasedTightName_, eidTightMap, event);
120 bendavid 1.43
121     edm::Handle<reco::VertexCollection> hVertex;
122     event.getByLabel(pvEdmName_, hVertex);
123     const reco::VertexCollection *pvCol = hVertex.product();
124    
125     edm::Handle<reco::VertexCollection> hVertexBS;
126     event.getByLabel(pvBSEdmName_, hVertexBS);
127     const reco::VertexCollection *pvBSCol = hVertexBS.product();
128    
129     edm::Handle<reco::TrackCollection> hGeneralTracks;
130     event.getByLabel("generalTracks", hGeneralTracks);
131     //const reco::VertexCollection *trackCol = hGeneralTracks.product();
132 bendavid 1.45
133     edm::Handle<std::vector<mitedm::DecayPart> > hConversions;
134     event.getByLabel("mvfConversionRemoval", hConversions);
135    
136     mitedm::ConversionMatcher convMatcher;
137 bendavid 1.43
138     edm::ESHandle<TransientTrackBuilder> hTransientTrackBuilder;
139     setup.get<TransientTrackRecord>().get("TransientTrackBuilder",hTransientTrackBuilder);
140     const TransientTrackBuilder *transientTrackBuilder = hTransientTrackBuilder.product();
141 bendavid 1.19
142 bendavid 1.44 GsfVertexTrackCompatibilityEstimator gsfEstimator;
143    
144 bendavid 1.43 //Get Magnetic Field from event setup, taking value at (0,0,0)
145     edm::ESHandle<MagneticField> magneticField;
146     setup.get<IdealMagneticFieldRecord>().get(magneticField);
147     const double bfield = magneticField->inTesla(GlobalPoint(0.,0.,0.)).z();
148    
149 sixie 1.11 const reco::GsfElectronCollection inElectrons = *(hElectronProduct.product());
150 loizides 1.29 // loop over electrons
151 sixie 1.11 for (reco::GsfElectronCollection::const_iterator iM = inElectrons.begin();
152 loizides 1.1 iM != inElectrons.end(); ++iM) {
153 sixie 1.13
154 loizides 1.29 // the index and Ref are needed for the eID association Map
155 sixie 1.13 unsigned int iElectron = iM - inElectrons.begin();
156     reco::GsfElectronRef eRef(hElectronProduct, iElectron);
157    
158 loizides 1.8 mithep::Electron *outElectron = electrons_->AddNew();
159 bendavid 1.31
160     outElectron->SetPtEtaPhi(iM->pt(),iM->eta(),iM->phi());
161 sixie 1.12
162 bendavid 1.40 outElectron->SetCharge(iM->charge());
163     outElectron->SetScPixCharge(iM->scPixCharge());
164    
165 loizides 1.30 outElectron->SetESuperClusterOverP(iM->eSuperClusterOverP());
166     outElectron->SetESeedClusterOverPout(iM->eSeedClusterOverPout());
167     outElectron->SetPIn(iM->trackMomentumAtVtx().R());
168 loizides 1.29 outElectron->SetPOut(iM->trackMomentumOut().R());
169 loizides 1.30 outElectron->SetDeltaEtaSuperClusterTrackAtVtx(iM->deltaEtaSuperClusterTrackAtVtx());
170     outElectron->SetDeltaEtaSeedClusterTrackAtCalo(iM->deltaEtaSeedClusterTrackAtCalo());
171     outElectron->SetDeltaPhiSuperClusterTrackAtVtx(iM->deltaPhiSuperClusterTrackAtVtx());
172     outElectron->SetDeltaPhiSeedClusterTrackAtCalo(iM->deltaPhiSeedClusterTrackAtCalo());
173     outElectron->SetIsEnergyScaleCorrected(iM->isEnergyScaleCorrected());
174     outElectron->SetIsMomentumCorrected(iM->isMomentumCorrected());
175 bendavid 1.36 outElectron->SetNumberOfClusters(iM->basicClustersSize());
176 loizides 1.30 outElectron->SetClassification(iM->classification());
177 bendavid 1.37 outElectron->SetFBrem(iM->fbrem());
178    
179 loizides 1.38 // pflow electron stuff
180 bendavid 1.41 outElectron->SetIsEcalDriven(iM->ecalDrivenSeed());
181     outElectron->SetIsTrackerDriven(iM->trackerDrivenSeed());
182 bendavid 1.37 outElectron->SetMva(iM->mva());
183    
184 loizides 1.29 // shower shape variables
185 bendavid 1.37 outElectron->SetE15(iM->e1x5());
186     outElectron->SetE25Max(iM->e2x5Max());
187     outElectron->SetE55(iM->e5x5());
188     outElectron->SetCovEtaEta(iM->sigmaEtaEta());
189     outElectron->SetCoviEtaiEta(iM->sigmaIetaIeta());
190     outElectron->SetHadronicOverEm(iM->hcalOverEcal());
191     outElectron->SetHcalDepth1OverEcal(iM->hcalDepth1OverEcal());
192     outElectron->SetHcalDepth2OverEcal(iM->hcalDepth2OverEcal());
193 sixie 1.12
194 loizides 1.38 // fill isolation variables for both cone sizes
195 bendavid 1.37 outElectron->SetEcalRecHitIsoDr04(iM->dr04EcalRecHitSumEt());
196     outElectron->SetHcalDepth1TowerSumEtDr04(iM->dr04HcalDepth1TowerSumEt());
197     outElectron->SetHcalDepth2TowerSumEtDr04(iM->dr04HcalDepth2TowerSumEt());
198     outElectron->SetTrackIsolationDr04(iM->dr04TkSumPt());
199     outElectron->SetEcalRecHitIsoDr03(iM->dr03EcalRecHitSumEt());
200     outElectron->SetHcalTowerSumEtDr03(iM->dr03HcalTowerSumEt());
201     outElectron->SetHcalDepth1TowerSumEtDr03(iM->dr03HcalDepth1TowerSumEt());
202     outElectron->SetHcalDepth2TowerSumEtDr03(iM->dr03HcalDepth2TowerSumEt());
203     outElectron->SetTrackIsolationDr03(iM->dr03TkSumPt());
204    
205 loizides 1.38 // fiducial flags
206 bendavid 1.37 outElectron->SetIsEB(iM->isEB());
207     outElectron->SetIsEE(iM->isEE());
208     outElectron->SetIsEBEEGap(iM->isEBEEGap());
209     outElectron->SetIsEBEtaGap(iM->isEBEtaGap());
210     outElectron->SetIsEBPhiGap(iM->isEBPhiGap());
211     outElectron->SetIsEEDeeGap(iM->isEEDeeGap());
212     outElectron->SetIsEERingGap(iM->isEERingGap());
213 sixie 1.12
214 loizides 1.38 // gsf-tracker match quality
215 bendavid 1.37 outElectron->SetFracSharedHits(iM->shFracInnerHits());
216 sixie 1.15
217 loizides 1.29 // make proper links to Tracks and Super Clusters
218 loizides 1.1 if (gsfTrackMap_ && iM->gsfTrack().isNonnull())
219 bendavid 1.18 outElectron->SetGsfTrk(gsfTrackMap_->GetMit(refToPtr(iM->gsfTrack())));
220 loizides 1.29 // make tracker track links, relinking from gsf track associations if configured and
221     // link is otherwise absent
222 bendavid 1.37 if (trackerTrackMap_ && iM->closestCtfTrackRef().isNonnull()) {
223 bendavid 1.36 outElectron->SetTrackerTrk(trackerTrackMap_->GetMit(refToPtr(iM->closestCtfTrackRef())));
224 bendavid 1.19 }
225 loizides 1.38 if (barrelSuperClusterMap_ && endcapSuperClusterMap_ &&
226     pfSuperClusterMap_ && iM->superCluster().isNonnull()) {
227 bendavid 1.37 if(barrelSuperClusterMap_->HasMit(iM->superCluster())) {
228 sixie 1.12 outElectron->SetSuperCluster(barrelSuperClusterMap_->GetMit(iM->superCluster()));
229 bendavid 1.36 }
230     else if (endcapSuperClusterMap_->HasMit(iM->superCluster())) {
231 sixie 1.12 outElectron->SetSuperCluster(endcapSuperClusterMap_->GetMit(iM->superCluster()));
232     }
233 bendavid 1.36 else if (pfSuperClusterMap_->HasMit(iM->superCluster())) {
234     outElectron->SetSuperCluster(pfSuperClusterMap_->GetMit(iM->superCluster()));
235     }
236     else throw edm::Exception(edm::errors::Configuration, "FillerElectrons:FillDataBlock()\n")
237     << "Error! SuperCluster reference in unmapped collection " << edmName_ << endl;
238     }
239 sixie 1.13
240 bendavid 1.43 //compute impact parameter with respect to PV
241     if (iM->gsfTrack().isNonnull()) {
242     const reco::TransientTrack &tt = transientTrackBuilder->build(iM->gsfTrack());
243    
244     const std::pair<bool,Measurement1D> &d0pv = IPTools::absoluteTransverseImpactParameter(tt,pvCol->at(0));
245     if (d0pv.first) {
246     outElectron->SetD0PV(d0pv.second.value());
247     outElectron->SetD0PVErr(d0pv.second.error());
248     }
249 bendavid 1.44 else {
250     outElectron->SetD0PV(-99.0);
251     }
252    
253 bendavid 1.43
254     const std::pair<bool,Measurement1D> &ip3dpv = IPTools::absoluteImpactParameter3D(tt,pvCol->at(0));
255     if (ip3dpv.first) {
256     outElectron->SetIp3dPV(ip3dpv.second.value());
257     outElectron->SetIp3dPVErr(ip3dpv.second.error());
258     }
259 bendavid 1.44 else {
260     outElectron->SetIp3dPV(-99.0);
261     }
262 bendavid 1.43
263     const std::pair<bool,Measurement1D> &d0pvbs = IPTools::absoluteTransverseImpactParameter(tt,pvBSCol->at(0));
264     if (d0pvbs.first) {
265     outElectron->SetD0PVBS(d0pvbs.second.value());
266     outElectron->SetD0PVBSErr(d0pvbs.second.error());
267     }
268 bendavid 1.44 else {
269     outElectron->SetD0PVBS(-99.0);
270     }
271 bendavid 1.43
272     const std::pair<bool,Measurement1D> &ip3dpvbs = IPTools::absoluteImpactParameter3D(tt,pvBSCol->at(0));
273     if (ip3dpvbs.first) {
274     outElectron->SetIp3dPVBS(ip3dpvbs.second.value());
275     outElectron->SetIp3dPVBSErr(ip3dpvbs.second.error());
276     }
277 bendavid 1.44 else {
278     outElectron->SetIp3dPVBS(-99.0);
279     }
280    
281     //compute compatibility with PV using full GSF state mixture (but skip in AOD)
282     if (iM->gsfTrack()->gsfExtra().isAvailable()) {
283    
284     const std::pair<bool,double> &pvGsfCompat = gsfEstimator.estimate(pvCol->at(0),tt);
285     if (pvGsfCompat.first) {
286     outElectron->SetGsfPVCompatibility(pvGsfCompat.second);
287     }
288     else {
289     outElectron->SetGsfPVCompatibility(-99.0);
290     }
291    
292    
293     const std::pair<bool,double> &pvbsGsfCompat = gsfEstimator.estimate(pvBSCol->at(0),tt);
294     if (pvbsGsfCompat.first) {
295     outElectron->SetGsfPVBSCompatibility(pvbsGsfCompat.second);
296     }
297     else {
298     outElectron->SetGsfPVBSCompatibility(-99.0);
299     }
300    
301     //compute signal vertex compatibility with full GSF state mixture excluding matching ckf track
302     //from vertex
303     if (iM->closestCtfTrackRef().isNonnull() && iM->closestCtfTrackRef()->extra().isAvailable()) {
304     const reco::TransientTrack &ttCkf = transientTrackBuilder->build(iM->closestCtfTrackRef());
305    
306     const std::pair<bool,double> &pvGsfCompatMatched = gsfEstimator.estimate(pvCol->at(0),tt, ttCkf);
307     if (pvGsfCompatMatched.first) {
308     outElectron->SetGsfPVCompatibilityMatched(pvGsfCompatMatched.second);
309     }
310     else {
311     outElectron->SetGsfPVCompatibilityMatched(-99.0);
312     }
313    
314    
315     const std::pair<bool,double> &pvbsGsfCompatMatched = gsfEstimator.estimate(pvBSCol->at(0),tt, ttCkf);
316     if (pvbsGsfCompatMatched.first) {
317     outElectron->SetGsfPVBSCompatibilityMatched(pvbsGsfCompatMatched.second);
318     }
319     else {
320     outElectron->SetGsfPVBSCompatibilityMatched(-99.0);
321     }
322    
323     if (verbose_>1) {
324     printf("gsf compat = %5f\n", pvGsfCompat.second);
325     printf("gsf compat matched = %5f\n", pvGsfCompatMatched.second);
326     }
327     }
328     else {
329     //no matching ckf track, so copy existing values
330     if (pvGsfCompat.first) {
331     outElectron->SetGsfPVCompatibilityMatched(pvGsfCompat.second);
332     }
333     else {
334     outElectron->SetGsfPVCompatibilityMatched(-99.0);
335     }
336    
337     if (pvbsGsfCompat.first) {
338     outElectron->SetGsfPVBSCompatibilityMatched(pvbsGsfCompat.second);
339     }
340     else {
341     outElectron->SetGsfPVBSCompatibilityMatched(-99.0);
342     }
343     }
344    
345     }
346 bendavid 1.43
347     if (verbose_>1) {
348     printf("gsf track pt = %5f\n",iM->gsfTrack()->pt());
349     printf("gsf track mode pt = %5f\n",iM->gsfTrack()->ptMode());
350     printf("ttrack pt = %5f\n",tt.initialFreeState().momentum().perp());
351     //printf("ttrackgsf pt = %5f\n",ttgsf.innermostMeasurementState().globalMomentum().perp());
352 bendavid 1.44 printf("ip3dpv reduced chisquared = %5f, probability = %5f\n", ip3dpv.second.value()/ip3dpv.second.error(), TMath::Prob(ip3dpv.second.value()/ip3dpv.second.error(),1));
353     //printf("gsf reduced chisquared = %5f, probability = %5f\n", pvGsfCompat.second/2, TMath::Prob(pvGsfCompat.second,2));
354 bendavid 1.43 }
355    
356     }
357    
358     //fill conversion partner track info
359     ConversionFinder convFinder;
360     ConversionInfo convInfo = convFinder.getConversionInfo(*iM, hGeneralTracks, bfield);
361     outElectron->SetConvPartnerDCotTheta(convInfo.dcot());
362     outElectron->SetConvPartnerDist(convInfo.dist());
363     outElectron->SetConvPartnerRadius(convInfo.radiusOfConversion());
364 bendavid 1.45 outElectron->SetConversionXYZ(convInfo.pointOfConversion().x(),convInfo.pointOfConversion().y(),convInfo.pointOfConversion().z());
365     reco::TrackRef convTrackRef = convInfo.conversionPartnerTk();
366     if (trackerTrackMap_ && convTrackRef.isNonnull()) {
367     outElectron->SetConvPartnerTrk(trackerTrackMap_->GetMit(refToPtr(convTrackRef)));
368     }
369 bendavid 1.43
370 loizides 1.29 // fill Electron ID information
371 sixie 1.13 outElectron->SetPassLooseID((*eidLooseMap)[eRef]);
372     outElectron->SetPassTightID((*eidTightMap)[eRef]);
373 bendavid 1.31
374 bendavid 1.45 //fill additional conversion flag
375     outElectron->SetMatchesVertexConversion(convMatcher.matchesGoodConversion(*iM,hConversions));
376    
377 bendavid 1.31 if (verbose_>1) {
378     double recomass = sqrt(iM->energy()*iM->energy() - iM->p()*iM->p());
379 loizides 1.32 printf(" mithep::Electron, pt=%5f, eta=%5f, phi=%5f, energy=%5f, p=%5f, mass=%5f\n",
380     outElectron->Pt(), outElectron->Eta(), outElectron->Phi(),
381     outElectron->E(), outElectron->P(), outElectron->Mass());
382     printf("reco::GsfElectron , pt=%5f, eta=%5f, phi=%5f, energy=%5f, p=%5f, mass=%5f\n",
383     iM->pt(), iM->eta(), iM->phi(), iM->energy(), iM->p(), recomass);
384 bendavid 1.31 }
385 sixie 1.12 }
386 loizides 1.1 electrons_->Trim();
387     }