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File indexing completed on 2021-02-14 23:30:49 

0001 /*  \class L2MuonSeedGeneratorFromL1TkMu
0002  *
0003  *   L2 muon seed generator:
0004  *   Transform the L1TkMuon informations in seeds
0005  *   for the L2 muon reconstruction
0006  *   (mimicking L2MuonSeedGeneratorFromL1T)
0007  *
0008  *    Author: H. Kwon
0009  *    Modified by M. Oh
0010  */
0011 
0012 // Framework
0013 #include "FWCore/Framework/interface/stream/EDProducer.h"
0014 #include "FWCore/Utilities/interface/InputTag.h"
0015 #include "FWCore/Framework/interface/Frameworkfwd.h"
0016 #include "FWCore/Framework/interface/ConsumesCollector.h"
0017 #include "FWCore/Framework/interface/EventSetup.h"
0018 #include "FWCore/Framework/interface/Event.h"
0019 #include "FWCore/Framework/interface/MakerMacros.h"
0020 #include "FWCore/ParameterSet/interface/ParameterSet.h"
0021 #include "FWCore/MessageLogger/interface/MessageLogger.h"
0022 #include "FWCore/ParameterSet/interface/ConfigurationDescriptions.h"
0023 
0024 // Data Formats
0025 #include "DataFormats/MuonSeed/interface/L2MuonTrajectorySeed.h"
0026 #include "DataFormats/MuonSeed/interface/L2MuonTrajectorySeedCollection.h"
0027 #include "DataFormats/TrajectoryState/interface/PTrajectoryStateOnDet.h"
0028 #include "DataFormats/MuonDetId/interface/DTChamberId.h"
0029 #include "DataFormats/MuonDetId/interface/CSCDetId.h"
0030 #include "DataFormats/Common/interface/Handle.h"
0031 #include "DataFormats/GeometrySurface/interface/BoundCylinder.h"
0032 #include "DataFormats/Math/interface/deltaR.h"
0033 #include "DataFormats/L1Trigger/interface/Muon.h"
0034 #include "DataFormats/L1TCorrelator/interface/TkMuon.h"
0035 #include "DataFormats/L1TCorrelator/interface/TkMuonFwd.h"
0036 
0037 #include "CLHEP/Vector/ThreeVector.h"
0038 #include "Geometry/CommonDetUnit/interface/GeomDetEnumerators.h"
0039 #include "TrackingTools/TrajectoryParametrization/interface/GlobalTrajectoryParameters.h"
0040 #include "TrackingTools/TrajectoryParametrization/interface/CurvilinearTrajectoryError.h"
0041 #include "TrackingTools/TrajectoryState/interface/TrajectoryStateOnSurface.h"
0042 #include "TrackingTools/TrajectoryState/interface/FreeTrajectoryState.h"
0043 #include "TrackingTools/TrajectoryState/interface/TrajectoryStateTransform.h"
0044 #include "TrackingTools/KalmanUpdators/interface/Chi2MeasurementEstimator.h"
0045 #include "TrackingTools/DetLayers/interface/DetLayer.h"
0046 
0047 #include "RecoMuon/TrackingTools/interface/MuonServiceProxy.h"
0048 #include "RecoMuon/TrackingTools/interface/MuonPatternRecoDumper.h"
0049 
0050 using namespace std;
0051 using namespace edm;
0052 using namespace l1t;
0053 
0054 class L2MuonSeedGeneratorFromL1TkMu : public edm::stream::EDProducer<> {
0055 public:
0056   /// Constructor
0057   explicit L2MuonSeedGeneratorFromL1TkMu(const edm::ParameterSet &);
0058 
0059   /// Destructor
0060   ~L2MuonSeedGeneratorFromL1TkMu() override = default;
0061 
0062   static void fillDescriptions(edm::ConfigurationDescriptions &descriptions);
0063   void produce(edm::Event &, const edm::EventSetup &) override;
0064 
0065 private:
0066   edm::InputTag source_;
0067   edm::EDGetTokenT<l1t::TkMuonCollection> muCollToken_;
0068 
0069   edm::InputTag offlineSeedLabel_;
0070   edm::EDGetTokenT<edm::View<TrajectorySeed>> offlineSeedToken_;
0071 
0072   std::string propagatorName_;
0073 
0074   const double l1MinPt_;
0075   const double l1MaxEta_;
0076   const double minPtBarrel_;
0077   const double minPtEndcap_;
0078   const double minPL1Tk_;
0079   const double minPtL1TkBarrel_;
0080   const bool useOfflineSeed_;
0081   const bool useUnassociatedL1_;
0082   std::vector<double> matchingDR_;
0083   std::vector<double> etaBins_;
0084 
0085   // parameters used in propagating L1 tracker track
0086   // to the second muon station, numbers are
0087   // taken from L1TkMuonProducer::propagateToGMT
0088   static constexpr float etaBoundary_{1.1};
0089   static constexpr float distMB2_{550.};
0090   static constexpr float distME2_{850.};
0091   static constexpr float phiCorr0_{1.464};
0092   static constexpr float phiCorr1_{1.7};
0093   static constexpr float phiCorr2_{144.};
0094 
0095   /// the event setup proxy, it takes care the services update
0096   std::unique_ptr<MuonServiceProxy> service_;
0097   std::unique_ptr<MeasurementEstimator> estimator_;
0098 
0099   const TrajectorySeed *associateOfflineSeedToL1(edm::Handle<edm::View<TrajectorySeed>> &,
0100                                                  std::vector<int> &,
0101                                                  TrajectoryStateOnSurface &,
0102                                                  double);
0103 };
0104 
0105 // constructors
0106 L2MuonSeedGeneratorFromL1TkMu::L2MuonSeedGeneratorFromL1TkMu(const edm::ParameterSet &iConfig)
0107     : source_(iConfig.getParameter<InputTag>("InputObjects")),
0108       muCollToken_(consumes<l1t::TkMuonCollection>(source_)),
0109       propagatorName_(iConfig.getParameter<string>("Propagator")),
0110       l1MinPt_(iConfig.getParameter<double>("L1MinPt")),
0111       l1MaxEta_(iConfig.getParameter<double>("L1MaxEta")),
0112       minPtBarrel_(iConfig.getParameter<double>("SetMinPtBarrelTo")),
0113       minPtEndcap_(iConfig.getParameter<double>("SetMinPtEndcapTo")),
0114       minPL1Tk_(iConfig.getParameter<double>("MinPL1Tk")),
0115       minPtL1TkBarrel_(iConfig.getParameter<double>("MinPtL1TkBarrel")),
0116       useOfflineSeed_(iConfig.getUntrackedParameter<bool>("UseOfflineSeed", false)),
0117       useUnassociatedL1_(iConfig.getParameter<bool>("UseUnassociatedL1")),
0118       matchingDR_(iConfig.getParameter<std::vector<double>>("MatchDR")),
0119       etaBins_(iConfig.getParameter<std::vector<double>>("EtaMatchingBins")) {
0120   if (useOfflineSeed_) {
0121     offlineSeedLabel_ = iConfig.getUntrackedParameter<InputTag>("OfflineSeedLabel");
0122     offlineSeedToken_ = consumes<edm::View<TrajectorySeed>>(offlineSeedLabel_);
0123 
0124     // check that number of eta bins -1 matches number of dR cones
0125     if (matchingDR_.size() != etaBins_.size() - 1) {
0126       throw cms::Exception("Configuration") << "Size of MatchDR "
0127                                             << "does not match number of eta bins." << endl;
0128     }
0129   }
0130 
0131   // service parameters
0132   ParameterSet serviceParameters = iConfig.getParameter<ParameterSet>("ServiceParameters");
0133 
0134   // the services
0135   service_ = std::make_unique<MuonServiceProxy>(serviceParameters, consumesCollector());
0136 
0137   // the estimator
0138   estimator_ = std::make_unique<Chi2MeasurementEstimator>(10000.);
0139 
0140   produces<L2MuonTrajectorySeedCollection>();
0141 }
0142 
0143 void L2MuonSeedGeneratorFromL1TkMu::fillDescriptions(edm::ConfigurationDescriptions &descriptions) {
0144   edm::ParameterSetDescription desc;
0145   desc.add<edm::InputTag>("InputObjects", edm::InputTag("hltGmtStage2Digis"));
0146   desc.add<string>("Propagator", "");
0147   desc.add<double>("L1MinPt", -1.);
0148   desc.add<double>("L1MaxEta", 5.0);
0149   desc.add<double>("SetMinPtBarrelTo", 3.5);
0150   desc.add<double>("SetMinPtEndcapTo", 1.0);
0151   desc.add<double>("MinPL1Tk", 3.5);
0152   desc.add<double>("MinPtL1TkBarrel", 3.5);
0153   desc.addUntracked<bool>("UseOfflineSeed", false);
0154   desc.add<bool>("UseUnassociatedL1", true);
0155   desc.add<std::vector<double>>("MatchDR", {0.3});
0156   desc.add<std::vector<double>>("EtaMatchingBins", {0., 2.5});
0157   desc.addUntracked<edm::InputTag>("OfflineSeedLabel", edm::InputTag(""));
0158 
0159   edm::ParameterSetDescription psd0;
0160   psd0.addUntracked<std::vector<std::string>>("Propagators", {"SteppingHelixPropagatorAny"});
0161   psd0.add<bool>("RPCLayers", true);
0162   psd0.addUntracked<bool>("UseMuonNavigation", true);
0163   desc.add<edm::ParameterSetDescription>("ServiceParameters", psd0);
0164   descriptions.add("L2MuonSeedGeneratorFromL1TkMu", desc);
0165 }
0166 
0167 void L2MuonSeedGeneratorFromL1TkMu::produce(edm::Event &iEvent, const edm::EventSetup &iSetup) {
0168   const std::string metname = "Muon|RecoMuon|L2MuonSeedGeneratorFromL1TkMu";
0169   MuonPatternRecoDumper debug;
0170 
0171   auto output = std::make_unique<L2MuonTrajectorySeedCollection>();
0172 
0173   edm::Handle<l1t::TkMuonCollection> muColl;
0174   iEvent.getByToken(muCollToken_, muColl);
0175   LogDebug(metname) << "Number of muons " << muColl->size() << endl;
0176 
0177   edm::Handle<edm::View<TrajectorySeed>> offlineSeedHandle;
0178   vector<int> offlineSeedMap;
0179   if (useOfflineSeed_) {
0180     iEvent.getByToken(offlineSeedToken_, offlineSeedHandle);
0181     offlineSeedMap = vector<int>(offlineSeedHandle->size(), 0);
0182   }
0183 
0184   for (auto const &tkmu : *muColl) {
0185     // L1 tracker track
0186     auto const &it = tkmu.trkPtr();
0187 
0188     // propagate the L1 tracker track to GMT
0189     auto p3 = it->momentum();
0190 
0191     float tk_p = p3.mag();
0192     if (tk_p < minPL1Tk_)
0193       continue;
0194 
0195     float tk_pt = p3.perp();
0196     float tk_eta = p3.eta();
0197     float tk_aeta = std::abs(tk_eta);
0198 
0199     bool barrel = tk_aeta < etaBoundary_;
0200     if (barrel && tk_pt < minPtL1TkBarrel_)
0201       continue;
0202 
0203     float tk_phi = p3.phi();
0204     float tk_q = it->rInv() > 0 ? 1. : -1.;
0205     float tk_z = it->POCA().z();
0206 
0207     float dzCorrPhi = 1.;
0208     float deta = 0;
0209     float etaProp = tk_aeta;
0210 
0211     if (barrel) {
0212       etaProp = etaBoundary_;
0213       deta = tk_z / distMB2_ / cosh(tk_aeta);
0214     } else {
0215       float delta = tk_z / distME2_;  //roughly scales as distance to 2nd station
0216       if (tk_eta > 0)
0217         delta *= -1;
0218       dzCorrPhi = 1. + delta;
0219 
0220       float zOzs = tk_z / distME2_;
0221       if (tk_eta > 0)
0222         deta = zOzs / (1. - zOzs);
0223       else
0224         deta = zOzs / (1. + zOzs);
0225       deta = deta * tanh(tk_eta);
0226     }
0227     float resPhi = tk_phi - phiCorr0_ * tk_q * cosh(phiCorr1_) / cosh(etaProp) / tk_pt * dzCorrPhi - M_PI / phiCorr2_;
0228     resPhi = reco::reduceRange(resPhi);
0229 
0230     float pt = tk_pt;  //not corrected for eloss
0231     float eta = tk_eta + deta;
0232     float theta = 2 * atan(exp(-eta));
0233     float phi = resPhi;
0234     int charge = it->rInv() > 0 ? 1 : -1;
0235 
0236     if (pt < l1MinPt_ || std::abs(eta) > l1MaxEta_)
0237       continue;
0238 
0239     LogDebug(metname) << "New L2 Muon Seed";
0240     LogDebug(metname) << "Pt = " << pt << " GeV/c";
0241     LogDebug(metname) << "eta = " << eta;
0242     LogDebug(metname) << "theta = " << theta << " rad";
0243     LogDebug(metname) << "phi = " << phi << " rad";
0244     LogDebug(metname) << "charge = " << charge;
0245     LogDebug(metname) << "In Barrel? = " << barrel;
0246 
0247     // Update the services
0248     service_->update(iSetup);
0249 
0250     const DetLayer *detLayer = nullptr;
0251     float radius = 0.;
0252 
0253     CLHEP::Hep3Vector vec(0., 1., 0.);
0254     vec.setTheta(theta);
0255     vec.setPhi(phi);
0256 
0257     DetId theid;
0258     // Get the det layer on which the state should be put
0259     if (barrel) {
0260       LogDebug(metname) << "The seed is in the barrel";
0261 
0262       // MB2
0263       theid = DTChamberId(0, 2, 0);
0264       detLayer = service_->detLayerGeometry()->idToLayer(theid);
0265       LogDebug(metname) << "L2 Layer: " << debug.dumpLayer(detLayer);
0266 
0267       const BoundSurface *sur = &(detLayer->surface());
0268       const BoundCylinder *bc = dynamic_cast<const BoundCylinder *>(sur);
0269 
0270       radius = std::abs(bc->radius() / sin(theta));
0271 
0272       LogDebug(metname) << "radius " << radius;
0273 
0274       if (pt < minPtBarrel_)
0275         pt = minPtBarrel_;
0276     } else {
0277       LogDebug(metname) << "The seed is in the endcap";
0278 
0279       // ME2
0280       theid = theta < Geom::pi() / 2. ? CSCDetId(1, 2, 0, 0, 0) : CSCDetId(2, 2, 0, 0, 0);
0281 
0282       detLayer = service_->detLayerGeometry()->idToLayer(theid);
0283       LogDebug(metname) << "L2 Layer: " << debug.dumpLayer(detLayer);
0284 
0285       radius = std::abs(detLayer->position().z() / cos(theta));
0286 
0287       if (pt < minPtEndcap_)
0288         pt = minPtEndcap_;
0289     }
0290 
0291     vec.setMag(radius);
0292 
0293     GlobalPoint pos(vec.x(), vec.y(), vec.z());
0294 
0295     GlobalVector mom(pt * cos(phi), pt * sin(phi), pt * cos(theta) / sin(theta));
0296 
0297     GlobalTrajectoryParameters param(pos, mom, charge, &*service_->magneticField());
0298     AlgebraicSymMatrix55 mat;
0299 
0300     mat[0][0] = (0.25 / pt) * (0.25 / pt);  // sigma^2(charge/abs_momentum)
0301     if (!barrel)
0302       mat[0][0] = (0.4 / pt) * (0.4 / pt);
0303 
0304     mat[1][1] = 0.05 * 0.05;  // sigma^2(lambda)
0305     mat[2][2] = 0.2 * 0.2;    // sigma^2(phi)
0306     mat[3][3] = 20. * 20.;    // sigma^2(x_transverse))
0307     mat[4][4] = 20. * 20.;    // sigma^2(y_transverse))
0308 
0309     CurvilinearTrajectoryError error(mat);
0310 
0311     const FreeTrajectoryState state(param, error);
0312 
0313     LogDebug(metname) << "Free trajectory State from the parameters";
0314     LogDebug(metname) << debug.dumpFTS(state);
0315 
0316     // Propagate the state on the MB2/ME2 surface
0317     TrajectoryStateOnSurface tsos = service_->propagator(propagatorName_)->propagate(state, detLayer->surface());
0318 
0319     LogDebug(metname) << "State after the propagation on the layer";
0320     LogDebug(metname) << debug.dumpLayer(detLayer);
0321     LogDebug(metname) << debug.dumpTSOS(tsos);
0322 
0323     double dRcone = matchingDR_[0];
0324     if (std::abs(eta) < etaBins_.back()) {
0325       std::vector<double>::iterator lowEdge = std::upper_bound(etaBins_.begin(), etaBins_.end(), std::abs(eta));
0326       dRcone = matchingDR_.at(lowEdge - etaBins_.begin() - 1);
0327     }
0328 
0329     if (tsos.isValid()) {
0330       edm::OwnVector<TrackingRecHit> container;
0331 
0332       if (useOfflineSeed_) {
0333         // Get the compatible dets on the layer
0334         std::vector<pair<const GeomDet *, TrajectoryStateOnSurface>> detsWithStates =
0335             detLayer->compatibleDets(tsos, *service_->propagator(propagatorName_), *estimator_);
0336 
0337         if (detsWithStates.empty() && barrel) {
0338           // Fallback solution using ME2, try again to propagate but using ME2 as reference
0339           DetId fallback_id;
0340           theta < Geom::pi() / 2. ? fallback_id = CSCDetId(1, 2, 0, 0, 0) : fallback_id = CSCDetId(2, 2, 0, 0, 0);
0341           const DetLayer *ME2DetLayer = service_->detLayerGeometry()->idToLayer(fallback_id);
0342 
0343           tsos = service_->propagator(propagatorName_)->propagate(state, ME2DetLayer->surface());
0344           detsWithStates = ME2DetLayer->compatibleDets(tsos, *service_->propagator(propagatorName_), *estimator_);
0345         }
0346 
0347         if (!detsWithStates.empty()) {
0348           TrajectoryStateOnSurface newTSOS = detsWithStates.front().second;
0349           const GeomDet *newTSOSDet = detsWithStates.front().first;
0350 
0351           LogDebug(metname) << "Most compatible det";
0352           LogDebug(metname) << debug.dumpMuonId(newTSOSDet->geographicalId());
0353 
0354           if (newTSOS.isValid()) {
0355             LogDebug(metname) << "pos: (r=" << newTSOS.globalPosition().mag()
0356                               << ", phi=" << newTSOS.globalPosition().phi()
0357                               << ", eta=" << newTSOS.globalPosition().eta() << ")";
0358             LogDebug(metname) << "mom: (q*pt=" << newTSOS.charge() * newTSOS.globalMomentum().perp()
0359                               << ", phi=" << newTSOS.globalMomentum().phi()
0360                               << ", eta=" << newTSOS.globalMomentum().eta() << ")";
0361 
0362             const TrajectorySeed *assoOffseed =
0363                 associateOfflineSeedToL1(offlineSeedHandle, offlineSeedMap, newTSOS, dRcone);
0364 
0365             if (assoOffseed != nullptr) {
0366               PTrajectoryStateOnDet const &seedTSOS = assoOffseed->startingState();
0367               for (auto const &recHit : assoOffseed->recHits()) {
0368                 container.push_back(recHit);
0369               }
0370               auto dummyRef = edm::Ref<MuonBxCollection>();
0371               output->emplace_back(L2MuonTrajectorySeed(seedTSOS, container, alongMomentum, dummyRef));
0372             } else {
0373               if (useUnassociatedL1_) {
0374                 // convert the TSOS into a PTSOD
0375                 PTrajectoryStateOnDet const &seedTSOS =
0376                     trajectoryStateTransform::persistentState(newTSOS, newTSOSDet->geographicalId().rawId());
0377                 auto dummyRef = edm::Ref<MuonBxCollection>();
0378                 output->emplace_back(L2MuonTrajectorySeed(seedTSOS, container, alongMomentum, dummyRef));
0379               }
0380             }
0381           }
0382         }
0383       } else {
0384         // convert the TSOS into a PTSOD
0385         PTrajectoryStateOnDet const &seedTSOS = trajectoryStateTransform::persistentState(tsos, theid.rawId());
0386         auto dummyRef = edm::Ref<MuonBxCollection>();
0387         output->emplace_back(L2MuonTrajectorySeed(seedTSOS, container, alongMomentum, dummyRef));
0388       }
0389     }
0390   }
0391 
0392   iEvent.put(std::move(output));
0393 }
0394 
0395 // FIXME: does not resolve ambiguities yet!
0396 const TrajectorySeed *L2MuonSeedGeneratorFromL1TkMu::associateOfflineSeedToL1(
0397     edm::Handle<edm::View<TrajectorySeed>> &offseeds,
0398     std::vector<int> &offseedMap,
0399     TrajectoryStateOnSurface &newTsos,
0400     double dRcone) {
0401   if (dRcone < 0.)
0402     return nullptr;
0403 
0404   const std::string metlabel = "Muon|RecoMuon|L2MuonSeedGeneratorFromL1TkMu";
0405   MuonPatternRecoDumper debugtmp;
0406 
0407   edm::View<TrajectorySeed>::const_iterator offseed, endOffseed = offseeds->end();
0408   const TrajectorySeed *selOffseed = nullptr;
0409   double bestDr2 = 99999.;
0410   unsigned int nOffseed(0);
0411   int lastOffseed(-1);
0412 
0413   for (offseed = offseeds->begin(); offseed != endOffseed; ++offseed, ++nOffseed) {
0414     if (offseedMap[nOffseed] != 0)
0415       continue;
0416     GlobalPoint glbPos = service_->trackingGeometry()
0417                              ->idToDet(offseed->startingState().detId())
0418                              ->surface()
0419                              .toGlobal(offseed->startingState().parameters().position());
0420     GlobalVector glbMom = service_->trackingGeometry()
0421                               ->idToDet(offseed->startingState().detId())
0422                               ->surface()
0423                               .toGlobal(offseed->startingState().parameters().momentum());
0424 
0425     // Preliminary check
0426     double preDr2 = deltaR2(newTsos.globalPosition().eta(), newTsos.globalPosition().phi(), glbPos.eta(), glbPos.phi());
0427     if (preDr2 > 1.0)
0428       continue;
0429 
0430     const FreeTrajectoryState offseedFTS(
0431         glbPos, glbMom, offseed->startingState().parameters().charge(), &*service_->magneticField());
0432     TrajectoryStateOnSurface offseedTsos =
0433         service_->propagator(propagatorName_)->propagate(offseedFTS, newTsos.surface());
0434     LogDebug(metlabel) << "Offline seed info: Det and State" << std::endl;
0435     LogDebug(metlabel) << debugtmp.dumpMuonId(offseed->startingState().detId()) << std::endl;
0436     LogDebug(metlabel) << "pos: (r=" << offseedFTS.position().mag() << ", phi=" << offseedFTS.position().phi()
0437                        << ", eta=" << offseedFTS.position().eta() << ")" << std::endl;
0438     LogDebug(metlabel) << "mom: (q*pt=" << offseedFTS.charge() * offseedFTS.momentum().perp()
0439                        << ", phi=" << offseedFTS.momentum().phi() << ", eta=" << offseedFTS.momentum().eta() << ")"
0440                        << std::endl
0441                        << std::endl;
0442 
0443     if (offseedTsos.isValid()) {
0444       LogDebug(metlabel) << "Offline seed info after propagation to L1 layer:" << std::endl;
0445       LogDebug(metlabel) << "pos: (r=" << offseedTsos.globalPosition().mag()
0446                          << ", phi=" << offseedTsos.globalPosition().phi()
0447                          << ", eta=" << offseedTsos.globalPosition().eta() << ")" << std::endl;
0448       LogDebug(metlabel) << "mom: (q*pt=" << offseedTsos.charge() * offseedTsos.globalMomentum().perp()
0449                          << ", phi=" << offseedTsos.globalMomentum().phi()
0450                          << ", eta=" << offseedTsos.globalMomentum().eta() << ")" << std::endl
0451                          << std::endl;
0452       double newDr2 = deltaR2(newTsos.globalPosition().eta(),
0453                               newTsos.globalPosition().phi(),
0454                               offseedTsos.globalPosition().eta(),
0455                               offseedTsos.globalPosition().phi());
0456       LogDebug(metlabel) << "   -- DR = " << newDr2 << std::endl;
0457       if (newDr2 < bestDr2 && newDr2 < dRcone * dRcone) {
0458         LogDebug(metlabel) << "          --> OK! " << newDr2 << std::endl << std::endl;
0459         selOffseed = &*offseed;
0460         bestDr2 = newDr2;
0461         offseedMap[nOffseed] = 1;
0462         if (lastOffseed > -1)
0463           offseedMap[lastOffseed] = 0;
0464         lastOffseed = nOffseed;
0465       } else {
0466         LogDebug(metlabel) << "          --> Rejected. " << newDr2 << std::endl << std::endl;
0467       }
0468     } else {
0469       LogDebug(metlabel) << "Invalid offline seed TSOS after propagation!" << std::endl << std::endl;
0470     }
0471   }
0472 
0473   return selOffseed;
0474 }
0475 
0476 //define this as a plug-in
0477 DEFINE_FWK_MODULE(L2MuonSeedGeneratorFromL1TkMu);
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