Performance of reconstruction and identification of τ leptons decaying to hadrons and v τ in pp collisions at s=13 TeV

CMS Collaboration

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)


The algorithm developed by the CMS Collaboration to reconstruct and identify τ leptons produced in proton-proton collisions at s=7 and 8 TeV, via their decays to hadrons and a neutrino, has been significantly improved. The changes include a revised reconstruction of π 0 candidates, and improvements in multivariate discriminants to separate τ leptons from jets and electrons. The algorithm is extended to reconstruct τ leptons in highly Lorentz-boosted pair production, and in the high-level trigger. The performance of the algorithm is studied using proton-proton collisions recorded during 2016 at s=13 TeV, corresponding to an integrated luminosity of 35.9 fb -1 . The performance is evaluated in terms of the efficiency for a genuine τ lepton to pass the identification criteria and of the probabilities for jets, electrons, and muons to be misidentified as τ leptons. The results are found to be very close to those expected from Monte Carlo simulation.

Original languageEnglish
Article numberP10005
JournalJournal of Instrumentation
Issue number10
Publication statusPublished - 2 Oct 2018


  • Large detector-systems performance
  • Particle identification methods
  • Performance of High Energy Physics Detectors

ASJC Scopus subject areas

  • Instrumentation
  • Mathematical Physics

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