Reconstruction and identification of tau lepton decays to hadrons and nu(tau) at CMS

Khachatryan V., Sirunyan A. M. , Tumasyan A., Adam W., Asilar E., Bergauer T., ...More

JOURNAL OF INSTRUMENTATION, vol.11, 2016 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 11
  • Publication Date: 2016
  • Doi Number: 10.1088/1748-0221/11/01/p01019
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Keywords: Particle identification methods, Large detector systems for particle and astroparticle physics


This paper describes the algorithms used by the CMS experiment to reconstruct and identify tau -> hadrons + nu(tau) decays during Run 1 of the LHC. The performance of the algorithms is studied in proton-proton collisions recorded at a centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 19.7 fb(-1). The algorithms achieve an identification efficiency of 50-60%, with misidentification rates for quark and gluon jets, electrons, and muons between per mille and per cent levels.