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Search for heavy, top-like quark pair production in the dilepton final state in pp collisions at √s = 7 TeV

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.; Klute, Markus; Lee, Y.-J.; Li, W.; Luckey, P. David, Jr.; Teng, Ma; Nahn, Steven; Paus, Christoph M. E.; Ralph, Duncan Kelley; Roland, Christof E.; Rudolph, Matthew Scott; Stephans, George S. F.; Stockli, Fabian; Sumorok, Konstanty C.; Sung, Kevin Kai Hong; Velicanu, Dragos Alexandru; Wenger, Edward Allen; Wolf, R.; Wyslouch, Boleslaw; Xie, S.; Yang, M.; Yilmaz, Yetkin; Yoon, A. S.; Zanetti, Marco; Butz, Erik M.; Roland, Gunther M.; Ma, Teng; ... Show more Show less
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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.
Date issued
2012-07
URI
http://hdl.handle.net/1721.1/91888
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science; Massachusetts Institute of Technology. School of Science
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
ISSN
03702693

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