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

Abstract : The results of a search for pair production of a heavy, top-like quark, t', in the decay mode (t' anti-t') to (b anti-W anti-b W) to (b anti-lepton neutrino anti-b lepton anti-neutrino) are presented. The search is performed with a data sample corresponding to an integrated luminosity of 5.0 inverse femtobarns 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' anti-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/c^2 are excluded at the 95% confidence level.
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http://hal.in2p3.fr/in2p3-00682855
Contributor : Sylvie Flores <>
Submitted on : Tuesday, March 27, 2012 - 10:08:42 AM
Last modification on : Wednesday, November 25, 2020 - 4:10:43 PM

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S. Chatrchyan, M. Besancon, S. Choudhury, M. Dejardin, D. Denegri, et al.. Search for heavy, top-like quark pair production in the dilepton final state in pp collisions at sqrt(s) = 7 TeV. Physics Letters B, Elsevier, 2012, 716, pp.103-121. ⟨10.1016/j.physletb.2012.07.059⟩. ⟨in2p3-00682855⟩

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