Measurement of the Z/γ[superscript ∗]→ττ Cross Section in Pp Collisions at √s = 13 TeV and Validation of τ Lepton Analysis Techniques
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Sirunyan2018_Article_MeasurementOfTheMathrmZGammaRi.pdf
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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
Date Issued
January 2018
Journal
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
Abstract
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%.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 4.0 International License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1140/epjc/s10052-018-6146-9
