update 2017 lepton eff
2017 lepton efficiency update from EGamma[1] and Muon POG[2] [1]https://twiki.cern.ch/twiki/bin/view/CMS/MuonPOG [2]https://twiki.cern.ch/twiki/bin/view/CMS/EgammaRunIIRecommendations#Electron_Scale_Factors
2017 lepton efficiency update from EGamma[1] and Muon POG[2] [1]https://twiki.cern.ch/twiki/bin/view/CMS/MuonPOG [2]https://twiki.cern.ch/twiki/bin/view/CMS/EgammaRunIIRecommendations#Electron_Scale_Factors