Measurement of the tt̅ production cross section in pp collisions at 7 TeV in lepton+jets events using b-quark jet identification
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Chatrchyan-2011-Measurement of the.pdf
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Author(s)
Alver, Burak Han
Bauer, Gerry P.
Bendavid, Joshua L.
Busza, Wit
Butz, Erik M.
Cali, Ivan Amos
Chan, M.
Dutta, Valentina
Everaerts, Pieter Bruno Bart
Ceballos, Guillelmo Gomez
Date Issued
November 2011
Journal
Physical Review D
Publisher
American Physical Society
Citation
Chatrchyan, S. et al. “Measurement of the [¯ over tt] production cross section in pp collisions at 7 TeV in lepton+jets events using b-quark jet identification.” Physical Review D 84.9 (2011). © 2011 CERN
Version
Final published version
Abstract
A new measurement of the inclusive production cross section for pp→[¯ over tt] is performed at a center-of-mass energy of 7 TeV using data collected by the CMS experiment at the LHC. The analysis uses a data sample corresponding to an integrated luminosity of 36 pb[superscript -1], and is based on the final state with one isolated, high transverse momentum muon or electron, missing transverse energy, and hadronic jets. The tt[over ¯] content of the selected events is enhanced by requiring the presence of at least one jet consistent with b-quark hadronization. The measured cross section is 150±9(stat)±17(syst)±6(lumi) pb and is in agreement with higher-order QCD calculations. The combination of this measurement with a previous CMS result based on dileptons gives 154±17(stat+syst)±6(lumi) pb.
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.84.092004
