Measurement of the tt̅ production cross section in pp collisions at √s=7 TeV in dilepton final states containing a τ
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Chatrchyan-2012-dilepton final states containing a.pdf
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Checksum (MD5)
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Author(s)
Bendavid, Joshua L.
Busza, Wit
Butz, Erik M.
Cali, Ivan Amos
Chan, M.
Dutta, Valentina
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Hahn, Kristian Allan
Kim, Y.
Date Issued
June 2012
Journal
Physical Review D
Publisher
American Physical Society
Citation
Chatrchyan, S. et al. “Measurement of the Tt[over ¯] Production Cross Section in Pp Collisions at Sqrt[s]=7 TeV in Dilepton Final States Containing a τ.” Physical Review D 85.11 (2012). © 2012 CERN, for the CMS Collaboration
Version
Final published version
Abstract
The top quark pair production cross section is measured in dilepton events with one electron or muon, and one hadronically decaying τ lepton from the decay tt̅ →(ℓν[subscript ℓ])(τ[subscript h]ν[subscript τ])bb̅ , (ℓ=e,μ). The data sample corresponds to an integrated luminosity of 2.0 fb[superscript -1] for the electron channel and 2.2 fb[superscript -1] for the muon channel, collected by the CMS detector at the LHC. This is the first measurement of the tt̅ cross section explicitly including τ leptons in proton-proton collisions at √s=7 TeV. The measured value σ[subscript tt̅] =143±14(stat)±22(syst)±3(lumi) 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
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.85.112007
