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

CMS Collaboration; Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Dragicevic, M.; Erö, J.; Valle, A. Escalante Del; Flechl, M.; Frühwirth, R.; Ghete, V.M.; Hrubec, J.; Jeitler, M.; Krammer, N.; Krätschmer, I.; Liko, D.; Madlener, T.; Mikulec, I.; ... mehr

Abstract:
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 π⁰ 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.

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Verlagsausgabe §
DOI: 10.5445/IR/1000089817
Veröffentlicht am 18.01.2019
Originalveröffentlichung
DOI: 10.1088/1748-0221/13/10/P10005
Scopus
Zitationen: 8
Web of Science
Zitationen: 1
Coverbild
Zugehörige Institution(en) am KIT Forschungszentrum Informatik, Karlsruhe (FZI)
Institut für Angewandte Informatik und Formale Beschreibungsverfahren (AIFB)
Institut für Experimentelle Kernphysik (IEKP)
Steinbuch Centre for Computing (SCC)
Institut für Kernphysik (IKP)
Institut für Experimentelle Teilchenphysik (ETP)
KIT-Zentrum Elementarteilchen- und Astroteilchenphysik (KCETA)
Publikationstyp Zeitschriftenaufsatz
Jahr 2018
Sprache Englisch
Identifikator ISSN: 1748-0221
urn:nbn:de:swb:90-898172
KITopen-ID: 1000089817
HGF-Programm 51.03.03 (POF III, LK 01)
Erschienen in Journal of Instrumentation
Band 13
Heft 10
Seiten Art. Nr.: P10005
Vorab online veröffentlicht am 02.10.2018
Schlagworte Large detector-systems performance, Particle identification methods, Performance of High Energy Physics Detectors
Nachgewiesen in Web of Science
Scopus
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