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File indexing completed on 2024-04-06 12:10:18 

0001 #include "EgammaAnalysis/ElectronTools/interface/ElectronEnergyCalibrator.h"
0002 
0003 #include <CLHEP/Random/RandGaussQ.h>
0004 #include <CLHEP/Random/RandFlat.h>
0005 #include <CLHEP/Random/Random.h>
0006 #include "FWCore/ServiceRegistry/interface/Service.h"
0007 #include "FWCore/Utilities/interface/RandomNumberGenerator.h"
0008 #include "FWCore/Utilities/interface/Exception.h"
0009 
0010 /****************************************************************************
0011  *
0012  * Propagate SC calibration from Zee fit to the electrons
0013  *
0014  ****************************************************************************/
0015 
0016 #include <string>
0017 #include <vector>
0018 #include <fstream>
0019 #include <sstream>
0020 #include <iostream>
0021 
0022 void ElectronEnergyCalibrator::init() {
0023   if (!isMC_)  // DATA
0024   {
0025     if (verbose_) {
0026       std::cout << "[ElectronEnergyCalibrator] Initialization in DATA mode" << std::endl;
0027     }
0028 
0029     std::ifstream fin(pathData_.c_str());
0030 
0031     if (!fin) {
0032       throw cms::Exception("Configuration") << "[ElectronEnergyCalibrator] Cannot open the file " << pathData_
0033                                             << "\n It is not found, missed or corrupted";
0034     } else {
0035       if (verbose_) {
0036         std::cout << "[ElectronEnergyCalibrator] File " << pathData_ << " succesfully opened" << std::endl;
0037       }
0038 
0039       std::string s;
0040       std::vector<std::string> selements;
0041       std::string delimiter = ",";
0042       nCorrValRaw = 0;
0043 
0044       while (!fin.eof()) {
0045         getline(fin, s);
0046         if (!s.empty()) {
0047           splitString(s, selements, delimiter);
0048           corrValArray[nCorrValRaw].nRunMin = stringToDouble(selements[0]);
0049           corrValArray[nCorrValRaw].nRunMax = stringToDouble(selements[1]);
0050           corrValArray[nCorrValRaw].corrCat0 = stringToDouble(selements[2]);
0051           corrValArray[nCorrValRaw].corrCat1 = stringToDouble(selements[3]);
0052           corrValArray[nCorrValRaw].corrCat2 = stringToDouble(selements[4]);
0053           corrValArray[nCorrValRaw].corrCat3 = stringToDouble(selements[5]);
0054           corrValArray[nCorrValRaw].corrCat4 = stringToDouble(selements[6]);
0055           corrValArray[nCorrValRaw].corrCat5 = stringToDouble(selements[7]);
0056           corrValArray[nCorrValRaw].corrCat6 = stringToDouble(selements[8]);
0057           corrValArray[nCorrValRaw].corrCat7 = stringToDouble(selements[9]);
0058 
0059           nCorrValRaw++;
0060 
0061           selements.clear();
0062         }
0063       }
0064 
0065       fin.close();
0066 
0067       if (verbose_) {
0068         std::cout << "[ElectronEnergyCalibrator] File closed" << std::endl;
0069       }
0070     }
0071     // linearity corrections data
0072     if (applyLinearityCorrection_) {
0073       std::ifstream finlin(pathLinData_.c_str());
0074 
0075       if (!finlin) {
0076         throw cms::Exception("Configuration") << "[ElectronEnergyCalibrator] Cannot open the file " << pathLinData_
0077                                               << "\n It is not found, missed or corrupted";
0078       } else {
0079         if (verbose_) {
0080           std::cout << "[ElectronEnergyCalibrator] File with Linearity Corrections " << pathLinData_
0081                     << " succesfully opened" << std::endl;
0082         }
0083 
0084         std::string s;
0085         std::vector<std::string> selements;
0086         std::string delimiter = ",";
0087         nLinCorrValRaw = 0;
0088 
0089         while (!finlin.eof()) {
0090           getline(finlin, s);
0091           if (!s.empty()) {
0092             splitString(s, selements, delimiter);
0093 
0094             linCorrValArray[nLinCorrValRaw].ptMin = stringToDouble(selements[0]);
0095             linCorrValArray[nLinCorrValRaw].ptMax = stringToDouble(selements[1]);
0096             linCorrValArray[nLinCorrValRaw].corrCat0 = stringToDouble(selements[2]);
0097             linCorrValArray[nLinCorrValRaw].corrCat1 = stringToDouble(selements[3]);
0098             linCorrValArray[nLinCorrValRaw].corrCat2 = stringToDouble(selements[4]);
0099             linCorrValArray[nLinCorrValRaw].corrCat3 = stringToDouble(selements[5]);
0100             linCorrValArray[nLinCorrValRaw].corrCat4 = stringToDouble(selements[6]);
0101             linCorrValArray[nLinCorrValRaw].corrCat5 = stringToDouble(selements[7]);
0102 
0103             nLinCorrValRaw++;
0104 
0105             selements.clear();
0106           }
0107         }
0108 
0109         finlin.close();
0110 
0111         if (verbose_) {
0112           std::cout << "[ElectronEnergyCalibrator] File closed" << std::endl;
0113         }
0114       }
0115     }
0116   } else  // MC
0117   {
0118     if (verbose_) {
0119       std::cout << "[ElectronEnergyCalibrator] Initialization in MC mode" << std::endl;
0120     }
0121   }
0122 }
0123 
0124 void ElectronEnergyCalibrator::splitString(const std::string &fullstr,
0125                                            std::vector<std::string> &elements,
0126                                            const std::string &delimiter) {
0127   std::string::size_type lastpos = fullstr.find_first_not_of(delimiter, 0);
0128   std::string::size_type pos = fullstr.find_first_of(delimiter, lastpos);
0129 
0130   while ((std::string::npos != pos) || (std::string::npos != lastpos)) {
0131     elements.push_back(fullstr.substr(lastpos, pos - lastpos));
0132     lastpos = fullstr.find_first_not_of(delimiter, pos);
0133     pos = fullstr.find_first_of(delimiter, lastpos);
0134   }
0135 }
0136 
0137 double ElectronEnergyCalibrator::stringToDouble(const std::string &str) {
0138   std::istringstream stm;
0139   double val = 0;
0140   stm.str(str);
0141   stm >> val;
0142   return val;
0143 }
0144 
0145 void ElectronEnergyCalibrator::calibrate(SimpleElectron &electron, edm::StreamID const &streamID) {
0146   double scale = 1.0;
0147   double dsigMC = 0.;
0148   double corrMC = 0.;
0149   double run_ = electron.getRunNumber();
0150   bool isEB = electron.isEB();
0151   double eta = electron.getEta();
0152   double r9 = electron.getR9();
0153 
0154   switch (correctionsType_) {
0155     case 1:
0156       if (verbose_) {
0157         std::cout << "[ElectronEnergyCalibrator] Using regression energy for calibration" << std::endl;
0158       }
0159       newEnergy_ = electron.getRegEnergy();
0160       newEnergyError_ = electron.getRegEnergyError();
0161       break;
0162     case 2:
0163       if (verbose_) {
0164         std::cout << "[ElectronEnergyCalibrator] Using scale corrections for new regression" << std::endl;
0165       }
0166       newEnergy_ = electron.getRegEnergy();
0167       newEnergyError_ = electron.getRegEnergyError();
0168       break;
0169     case 3:
0170       if (verbose_) {
0171         std::cout << "[ElectronEnergyCalibrator] Using standard ecal energy for calibration" << std::endl;
0172       }
0173       newEnergy_ = electron.getSCEnergy();
0174       newEnergyError_ = electron.getSCEnergyError();
0175       break;
0176   }
0177 
0178   edm::Service<edm::RandomNumberGenerator> rng;
0179   if (!rng.isAvailable()) {
0180     throw cms::Exception("Configuration")
0181         << "XXXXXXX requires the RandomNumberGeneratorService\n"
0182            "which is not present in the configuration file.  You must add the service\n"
0183            "in the configuration file or remove the modules that require it.";
0184   }
0185 
0186   if (!isMC_) {
0187     for (int i = 0; i < nCorrValRaw; i++) {
0188       if ((run_ >= corrValArray[i].nRunMin) && (run_ <= corrValArray[i].nRunMax)) {
0189         if (isEB) {
0190           if (fabs(eta) < 1) {
0191             if (r9 < 0.94) {
0192               scale = corrValArray[i].corrCat0;
0193             } else {
0194               scale = corrValArray[i].corrCat1;
0195             }
0196           } else {
0197             if (r9 < 0.94) {
0198               scale = corrValArray[i].corrCat2;
0199             } else {
0200               scale = corrValArray[i].corrCat3;
0201             }
0202           }
0203         } else {
0204           if (fabs(eta) < 2) {
0205             if (r9 < 0.94) {
0206               scale = corrValArray[i].corrCat4;
0207             } else {
0208               scale = corrValArray[i].corrCat5;
0209             }
0210           } else {
0211             if (r9 < 0.94) {
0212               scale = corrValArray[i].corrCat6;
0213             } else {
0214               scale = corrValArray[i].corrCat7;
0215             }
0216           }
0217         }
0218       }
0219     }
0220     newEnergy_ = newEnergy_ * scale;
0221   }
0222 
0223   switch (correctionsType_) {
0224     case 1:
0225       // Implementation of the MC smearing for regression energy type 1
0226       if (dataset_ == "Summer12_DR53X_HCP2012" || dataset_ == "Moriond2013") {
0227         if (!isMC_) {
0228           if (run_ <= 203002) {
0229             if (isEB && fabs(eta) < 1 && r9 < 0.94)
0230               dsigMC = 0.0103;
0231             if (isEB && fabs(eta) < 1 && r9 >= 0.94)
0232               dsigMC = 0.0090;
0233             if (isEB && fabs(eta) >= 1 && r9 < 0.94)
0234               dsigMC = 0.0190;
0235             if (isEB && fabs(eta) >= 1 && r9 >= 0.94)
0236               dsigMC = 0.0156;
0237             if (!isEB && fabs(eta) < 2 && r9 < 0.94)
0238               dsigMC = 0.0269;
0239             if (!isEB && fabs(eta) < 2 && r9 >= 0.94)
0240               dsigMC = 0.0287;
0241             if (!isEB && fabs(eta) >= 2 && r9 < 0.94)
0242               dsigMC = 0.0364;
0243             if (!isEB && fabs(eta) >= 2 && r9 >= 0.94)
0244               dsigMC = 0.0321;
0245           } else {
0246             if (isEB && fabs(eta) < 1 && r9 < 0.94)
0247               dsigMC = 0.0109;
0248             if (isEB && fabs(eta) < 1 && r9 >= 0.94)
0249               dsigMC = 0.0099;
0250             if (isEB && fabs(eta) >= 1 && r9 < 0.94)
0251               dsigMC = 0.0182;
0252             if (isEB && fabs(eta) >= 1 && r9 >= 0.94)
0253               dsigMC = 0.0200;
0254             if (!isEB && fabs(eta) < 2 && r9 < 0.94)
0255               dsigMC = 0.0282;
0256             if (!isEB && fabs(eta) < 2 && r9 >= 0.94)
0257               dsigMC = 0.0309;
0258             if (!isEB && fabs(eta) >= 2 && r9 < 0.94)
0259               dsigMC = 0.0386;
0260             if (!isEB && fabs(eta) >= 2 && r9 >= 0.94)
0261               dsigMC = 0.0359;
0262           }
0263         } else {
0264           CLHEP::RandFlat flatRandom(rng->getEngine(streamID));
0265           double rn = flatRandom.fire();
0266           if (rn > lumiRatio_) {
0267             if (isEB && fabs(eta) < 1 && r9 < 0.94)
0268               dsigMC = 0.0109;
0269             if (isEB && fabs(eta) < 1 && r9 >= 0.94)
0270               dsigMC = 0.0099;
0271             if (isEB && fabs(eta) >= 1 && r9 < 0.94)
0272               dsigMC = 0.0182;
0273             if (isEB && fabs(eta) >= 1 && r9 >= 0.94)
0274               dsigMC = 0.0200;
0275             if (!isEB && fabs(eta) < 2 && r9 < 0.94)
0276               dsigMC = 0.0282;
0277             if (!isEB && fabs(eta) < 2 && r9 >= 0.94)
0278               dsigMC = 0.0309;
0279             if (!isEB && fabs(eta) >= 2 && r9 < 0.94)
0280               dsigMC = 0.0386;
0281             if (!isEB && fabs(eta) >= 2 && r9 >= 0.94)
0282               dsigMC = 0.0359;
0283           } else {
0284             if (isEB && fabs(eta) < 1 && r9 < 0.94)
0285               dsigMC = 0.0103;
0286             if (isEB && fabs(eta) < 1 && r9 >= 0.94)
0287               dsigMC = 0.0090;
0288             if (isEB && fabs(eta) >= 1 && r9 < 0.94)
0289               dsigMC = 0.0190;
0290             if (isEB && fabs(eta) >= 1 && r9 >= 0.94)
0291               dsigMC = 0.0156;
0292             if (!isEB && fabs(eta) < 2 && r9 < 0.94)
0293               dsigMC = 0.0269;
0294             if (!isEB && fabs(eta) < 2 && r9 >= 0.94)
0295               dsigMC = 0.0287;
0296             if (!isEB && fabs(eta) >= 2 && r9 < 0.94)
0297               dsigMC = 0.0364;
0298             if (!isEB && fabs(eta) >= 2 && r9 >= 0.94)
0299               dsigMC = 0.0321;
0300           }
0301           if (lumiRatio_ == 0.0) {
0302             if (isEB && fabs(eta) < 1 && r9 < 0.94)
0303               dsigMC = 0.0103;
0304             if (isEB && fabs(eta) < 1 && r9 >= 0.94)
0305               dsigMC = 0.0090;
0306             if (isEB && fabs(eta) >= 1 && r9 < 0.94)
0307               dsigMC = 0.0190;
0308             if (isEB && fabs(eta) >= 1 && r9 >= 0.94)
0309               dsigMC = 0.0156;
0310             if (!isEB && fabs(eta) < 2 && r9 < 0.94)
0311               dsigMC = 0.0269;
0312             if (!isEB && fabs(eta) < 2 && r9 >= 0.94)
0313               dsigMC = 0.0287;
0314             if (!isEB && fabs(eta) >= 2 && r9 < 0.94)
0315               dsigMC = 0.0364;
0316             if (!isEB && fabs(eta) >= 2 && r9 >= 0.94)
0317               dsigMC = 0.0321;
0318           }
0319           if (lumiRatio_ == 1.0) {
0320             if (isEB && fabs(eta) < 1 && r9 < 0.94)
0321               dsigMC = 0.0109;
0322             if (isEB && fabs(eta) < 1 && r9 >= 0.94)
0323               dsigMC = 0.0099;
0324             if (isEB && fabs(eta) >= 1 && r9 < 0.94)
0325               dsigMC = 0.0182;
0326             if (isEB && fabs(eta) >= 1 && r9 >= 0.94)
0327               dsigMC = 0.0200;
0328             if (!isEB && fabs(eta) < 2 && r9 < 0.94)
0329               dsigMC = 0.0282;
0330             if (!isEB && fabs(eta) < 2 && r9 >= 0.94)
0331               dsigMC = 0.0309;
0332             if (!isEB && fabs(eta) >= 2 && r9 < 0.94)
0333               dsigMC = 0.0386;
0334             if (!isEB && fabs(eta) >= 2 && r9 >= 0.94)
0335               dsigMC = 0.0359;
0336           }
0337         }
0338       }
0339       break;
0340 
0341     case 2:
0342       // Implementation of the MC smearing for regression energy type 2
0343       if (dataset_ == "Summer12_LegacyPaper" || dataset_ == "22Jan2013ReReco") {
0344         if (isEB && fabs(eta) < 1 && r9 < 0.94)
0345           dsigMC = 0.0094;
0346         if (isEB && fabs(eta) < 1 && r9 >= 0.94)
0347           dsigMC = 0.0092;
0348         if (isEB && fabs(eta) >= 1 && r9 < 0.94)
0349           dsigMC = 0.0182;
0350         if (isEB && fabs(eta) >= 1 && r9 >= 0.94)
0351           dsigMC = 0.0139;
0352         if (!isEB && fabs(eta) < 2 && r9 < 0.94)
0353           dsigMC = 0.0220;
0354         if (!isEB && fabs(eta) < 2 && r9 >= 0.94)
0355           dsigMC = 0.0229;
0356         if (!isEB && fabs(eta) >= 2 && r9 < 0.94)
0357           dsigMC = 0.0290;
0358         if (!isEB && fabs(eta) >= 2 && r9 >= 0.94)
0359           dsigMC = 0.0234;
0360       }
0361       break;
0362 
0363     case 3:
0364       // standard SC energy scale corrections implementation
0365       if (dataset_ == "Summer11" ||
0366           dataset_ == "ReReco") {  // values from https://indico.cern.ch/conferenceDisplay.py?confId=146386
0367         if (isEB && fabs(eta) < 1 && r9 < 0.94)
0368           dsigMC = 0.01;
0369         if (isEB && fabs(eta) < 1 && r9 >= 0.94)
0370           dsigMC = 0.0099;
0371         if (isEB && fabs(eta) >= 1 && r9 < 0.94)
0372           dsigMC = 0.0217;
0373         if (isEB && fabs(eta) >= 1 && r9 >= 0.94)
0374           dsigMC = 0.0157;
0375         if (!isEB && fabs(eta) < 2 && r9 < 0.94)
0376           dsigMC = 0.0326;
0377         if (!isEB && fabs(eta) < 2 && r9 >= 0.94)
0378           dsigMC = 0.0330;
0379         if (!isEB && fabs(eta) >= 2 && r9 < 0.94)
0380           dsigMC = 0.0331;
0381         if (!isEB && fabs(eta) >= 2 && r9 >= 0.94)
0382           dsigMC = 0.0378;
0383       } else if (dataset_ == "Fall11" ||
0384                  dataset_ ==
0385                      "Jan16ReReco") {  // values from https://hypernews.cern.ch/HyperNews/CMS/get/higgs2g/634.html, consistant with Jan16ReReco corrections
0386         if (isEB && fabs(eta) < 1 && r9 < 0.94)
0387           dsigMC = 0.0096;
0388         if (isEB && fabs(eta) < 1 && r9 >= 0.94)
0389           dsigMC = 0.0074;
0390         if (isEB && fabs(eta) >= 1 && r9 < 0.94)
0391           dsigMC = 0.0196;
0392         if (isEB && fabs(eta) >= 1 && r9 >= 0.94)
0393           dsigMC = 0.0141;
0394         if (!isEB && fabs(eta) < 2 && r9 < 0.94)
0395           dsigMC = 0.0279;
0396         if (!isEB && fabs(eta) < 2 && r9 >= 0.94)
0397           dsigMC = 0.0268;
0398         if (!isEB && fabs(eta) >= 2 && r9 < 0.94)
0399           dsigMC = 0.0301;
0400         if (!isEB && fabs(eta) >= 2 && r9 >= 0.94)
0401           dsigMC = 0.0293;
0402       } else if (dataset_ == "Summer12" ||
0403                  dataset_ ==
0404                      "ICHEP2012") {  // new values from https://twiki.cern.ch/twiki/pub/CMS/EcalEnergyResolutionWithZee/oriented-ICHEP-scales_resolution.pdf
0405         if (isEB && fabs(eta) < 1 && r9 < 0.94)
0406           dsigMC = 0.0119;
0407         if (isEB && fabs(eta) < 1 && r9 >= 0.94)
0408           dsigMC = 0.0107;
0409         if (isEB && fabs(eta) >= 1 && r9 < 0.94)
0410           dsigMC = 0.0240;
0411         if (isEB && fabs(eta) >= 1 && r9 >= 0.94)
0412           dsigMC = 0.0149;
0413         if (!isEB && fabs(eta) < 2 && r9 < 0.94)
0414           dsigMC = 0.0330;
0415         if (!isEB && fabs(eta) < 2 && r9 >= 0.94)
0416           dsigMC = 0.0375;
0417         if (!isEB && fabs(eta) >= 2 && r9 < 0.94)
0418           dsigMC = 0.0602;
0419         if (!isEB && fabs(eta) >= 2 && r9 >= 0.94)
0420           dsigMC = 0.0607;
0421       } else if (dataset_ == "Summer12_DR53X_HCP2012" || dataset_ == "Moriond2013") {
0422         if (isEB && fabs(eta) < 1 && r9 < 0.94)
0423           dsigMC = 0.0099;
0424         if (isEB && fabs(eta) < 1 && r9 >= 0.94)
0425           dsigMC = 0.0103;
0426         if (isEB && fabs(eta) >= 1 && r9 < 0.94)
0427           dsigMC = 0.0219;
0428         if (isEB && fabs(eta) >= 1 && r9 >= 0.94)
0429           dsigMC = 0.0158;
0430         if (!isEB && fabs(eta) < 2 && r9 < 0.94)
0431           dsigMC = 0.0222;
0432         if (!isEB && fabs(eta) < 2 && r9 >= 0.94)
0433           dsigMC = 0.0298;
0434         if (!isEB && fabs(eta) >= 2 && r9 < 0.94)
0435           dsigMC = 0.0318;
0436         if (!isEB && fabs(eta) >= 2 && r9 >= 0.94)
0437           dsigMC = 0.0302;
0438       }
0439       break;
0440   }
0441 
0442   if (isMC_) {
0443     CLHEP::RandGaussQ gaussDistribution(rng->getEngine(streamID), 1., dsigMC);
0444     corrMC = gaussDistribution.fire();
0445     if (verbose_) {
0446       std::cout << "[ElectronEnergyCalibrator] unsmeared energy " << newEnergy_ << std::endl;
0447     }
0448     if (synchronization_) {
0449       std::cout << "[ElectronEnergyCalibrator] "
0450                 << "======================= SYNCRONIZATION MODE! =======================" << std::endl;
0451       newEnergy_ = newEnergy_ * (1 + dsigMC);
0452     } else {
0453       newEnergy_ = newEnergy_ * corrMC;
0454     }
0455     if (verbose_) {
0456       std::cout << "[ElectronEnergyCalibrator] smeared energy " << newEnergy_ << std::endl;
0457     }
0458   }
0459 
0460   // correct energy error for MC and for data as error is obtained from (ideal) MC parametrisation
0461   if (updateEnergyErrors_) {
0462     newEnergyError_ = sqrt(newEnergyError_ * newEnergyError_ + dsigMC * dsigMC * newEnergy_ * newEnergy_);
0463   }
0464   if (verbose_) {
0465     std::cout << "[ElectronEnergyCalibrator] initial energy " << electron.getRegEnergy() << " recalibrated  energy "
0466               << newEnergy_ << std::endl;
0467   }
0468   if (verbose_) {
0469     std::cout << "[ElectronEnergyCalibrator] initial energy error " << electron.getRegEnergyError()
0470               << " recalibrated energy error " << newEnergyError_ << std::endl;
0471   }
0472 
0473   electron.setNewEnergy(newEnergy_);
0474   electron.setNewEnergyError(newEnergyError_);
0475 }
0476 
0477 void ElectronEnergyCalibrator::correctLinearity(SimpleElectron &electron) {
0478   if (!isMC_ && applyLinearityCorrection_) {
0479     bool isEB = electron.isEB();
0480     double eta = electron.getEta();
0481     double theta = 2 * atan(exp(-eta));
0482     double p = electron.getCombinedMomentum();
0483     double pt = p * fabs(sin(theta));
0484     int classification = electron.getElClass();
0485     double linscale = 0.;
0486 
0487     for (int i = 0; i < nLinCorrValRaw; i++) {
0488       if ((pt >= linCorrValArray[i].ptMin) && (pt <= linCorrValArray[i].ptMax)) {
0489         if (isEB) {
0490           if (fabs(eta) < 1) {
0491             if (classification < 2) {
0492               linscale = linCorrValArray[i].corrCat0;
0493             } else {
0494               linscale = linCorrValArray[i].corrCat3;
0495             }
0496           } else {
0497             if (classification < 2) {
0498               linscale = linCorrValArray[i].corrCat1;
0499             } else {
0500               linscale = linCorrValArray[i].corrCat4;
0501             }
0502           }
0503         } else  // !isEB
0504         {
0505           if (classification < 2) {
0506             linscale = linCorrValArray[i].corrCat2;
0507           } else {
0508             linscale = linCorrValArray[i].corrCat5;
0509           }
0510         }
0511       }
0512     }
0513     double newP = p / (1. + linscale);
0514     if (verbose_) {
0515       std::cout << "[ElectronEnergyCalibrator] Applying a linearity correction of " << 1. / (1. + linscale)
0516                 << "   to   " << pt << " GeV in pt" << std::endl;
0517     }
0518     electron.setCombinedMomentum(newP);
0519     if (verbose_) {
0520       std::cout << "[ElectronEnergyCalibrator] calibrated transverse momentum " << pt
0521                 << " GeV recalibrated for linearity to momentum " << electron.getCombinedMomentum() * fabs(sin(theta))
0522                 << " GeV" << std::endl;
0523     }
0524   }
0525 }
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