Search for heavy, top-like quark pair production in the dilepton final state in pp collisions at √s = 7 TeV
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Chatrchyan-2012-Search for heavy, to.pdf
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Author(s)
Bauer, Gerry P.
Bendavid, J.
Busza, Wit
Cali, Ivan Amos
Chan, M.
Dutta, V.
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Hahn, Kristian Allan
Kim, Y.
Date Issued
July 2012
Journal
Physics Letters B
Publisher
Elsevier
Citation
Chatrchyan, S., V. Khachatryan, A.M. Sirunyan, A. Tumasyan, W. Adam, T. Bergauer, M. Dragicevic, et al. “Search for Heavy, Top-Like Quark Pair Production in the Dilepton Final State in Pp Collisions At √s = 7 TeV.” Physics Letters B 716, no. 1 (September 2012): 103–121. © 2012 CERN
Version
Final published version
Abstract
The results of a search for pair production of a heavy, top-like quark, t′, in the decay mode t′t¯′ → bW+b¯W[superscript −] → bℓ+νb¯ℓ[superscript −]ν¯ are presented. The search is performed with a data sample corresponding to an integrated luminosity of 5.0 fb [superscript −1] in pp collisions at a center-of-mass energy of 7 TeV, collected by the CMS experiment at the LHC. The observed number of events agrees with the expectation from standard model processes, and no evidence of t′t¯′ production is found. Upper limits on the production cross section as a function of t′ mass are presented, and t′ masses below 557 [GeV over c[superscript 2]] are excluded at the 95% confidence level.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Massachusetts Institute of Technology. School of 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/10.1016/j.physletb.2012.07.059
