Tau Reconstruction and Identification with Upgraded CMS Detector at LHC

Abstract

Tau leptons appear in the final state of many important physics processes such as decay of the Higgs boson, supersymmetric particles and additional heavy gauge bosons corresponding to a new symmetry. Thus, tau leptons play a crucial role in LHC physics programme at all energies. Since majority of the tau lepton decays are hadronic, Compact Muon Solenoid (CMS) experiment at CERN employs a dedicated procedure to reconstruct tau leptons from the light hadrons inside jets. In view of the upcoming LHC run at 13–14 TeV, it is crucial to study the performance of tau reconstruction and identification at high pileup and with the upgraded CMS detector geometry. In this paper, an overview of the results from CMS simulations is presented including the fake rates and their dependence on kinematic variables.