Measurement of the Z/γ[superscript ∗]→ττ Cross Section in Pp Collisions at √s = 13 TeV and Validation of τ Lepton Analysis Techniques
Author(s)
Abercrombie, Daniel Robert; Allen, Brandon Leigh; Azzolini, Virginia; Barbieri, Richard Alexander; Baty, Austin Alan; Bauer, Gerry P; Bi, Ran; Brandt, Stephanie Akemi; Busza, Wit; Cali, Ivan Amos; D'Alfonso, Mariarosaria; Demiragli, Zeynep; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Hsu, Dylan George; Hu, Miao; Iiyama, Yutaro; Innocenti, Gian Michele; Klute, Markus; Kovalskyi, Dmytro; Lee, Yen-Jie; Levin, Andrew Michael; Luckey Jr, P David; Maier, Benedikt; Marini, Andrea Carlo; McGinn, Christopher Francis; Mironov, Camelia Maria; Narayanan, Siddharth Madhavan; Niu, Xinmei; Paus, Christoph M. E.; Roland, Christof E; Roland, Gunther M; Salfeld-Nebgen, Jakob Maxillian Henry; Sumorok, Konstanty C; Tatar, Kaya; Velicanu, Dragos Alexandru; Wang, J.; Wang, Ta-Wei; Wyslouch, Boleslaw; ... Show more Show less
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A measurement is presented of the Z γ[superscript ∗] → ττ cross section in pp collisions at √s = 13TeV, using data recorded by the CMS experiment at the LHC, corresponding to an integrated luminosity of 2.3 fb[superscript -1]. The product of the inclusive cross section and branching fraction is measured to be σ(pp→Z/γ[superscript ∗]+X)B(Z/γ[superscript ∗]→ττ) = 1848 12(stat)± 67(syst \,+\,lumi) pb, in agreement with the standard model expectation, computed at next-to-next-to-leading order accuracy in perturbative quantum chromodynamics. The measurement is used to validate new analysis techniques relevant for future measurements of τ lepton production. The measurement also provides the reconstruction efficiency and energy scale for τ decays to hadrons+ν[subscript τ] final states, determined with respective relative uncertainties of 2.2 and 0.9%.
Date issued
2018-01Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
The European Physical Journal C
Publisher
Springer Berlin Heidelberg
Citation
CMS Collaboration, et al. “Measurement of the Z/γ[superscript ∗]→ττ Cross Section in Pp Collisions at √s = 13 TeV and Validation of τ Lepton Analysis Techniques.” The European Physical Journal C, vol. 78, no. 9, Sept. 2018. © 2018 CERN for the benefit of the CMS collaboration.
Version: Final published version
ISSN
1434-6044
1434-6052