Measurement of the t[bar over t] production cross section in the τ+jets channel in pp collisions at √s =7 TeV
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Measurement of the tt over.pdf
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Author(s)
Apyan, Aram
Bauer, Gerry P
Bendavid, Joshua L.
Busza, Wit
Cali, Ivan Amos
Dutta, Valentina
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Klute, Markus
Krajczar, Krisztian F.
Alternative Title
Measurement of the t¯t production cross section in the τ + jets channel in pp collisions at √s = 7 TeV
Date Issued
April 2013
Journal
The European Physical Journal C
Publisher
Springer-Verlag
Citation
The CMS Collaboration et al. “Measurement of the t[bar over t] Production Cross Section in the Τ+jets Channel in Pp Collisions at √s =7 TeV.” The European Physical Journal C 73.4 (2013): n. pag. © 2013 CERN for the benefit of the CMS collaboration
Version
Final published version
Abstract
The top-quark pair production cross section in 7 TeV center-of-mass energy proton–proton collisions is measured using data collected by the CMS detector at the LHC. The measurement uses events with one jet identified
as a hadronically decaying τ lepton and at least four additional energetic jets, at least one of which is identified as coming from a b quark. The analyzed data sample corresponds to an integrated luminosity of 3.9 fb[superscript −1] recorded by a dedicated multijet plus hadronically decaying τ trigger. A neural network has been developed to separate the top-quark pairs from the W+jets and multijet backgrounds. The measured value of σ[subscript t[bar over t]] = 152 ± 12 (stat.) ± 32 (syst.) ± 3 (lum.) pb is consistent with the standard model predictions.
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
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DOI of Published Version
https://doi.org/10.1140/epjc/s10052-013-2386-x
