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Search for a Heavy Toplike Quark in pp Collisions at √s=1.96  TeV

CollaborationWith : Clark, Allan Geoffrey / Garcia Navarro, Jose Enrique / Lister, Alison / Wu, Xin
Published in Physical Review Letters. 2011, vol. 107, no. 26, p. 261801
Abstract We present the results of a search for pair production of a heavy toplike (t′) quark decaying to Wq final states using data corresponding to an integrated luminosity of 5.6  fb−1 collected by the CDF II detector in pp collisions at s√=1.96  TeV. We perform parallel searches for t′→Wb and t′→Wq (where q is a generic down-type quark) in events containing a lepton and four or more jets. By performing a fit to the two-dimensional distribution of total transverse energy versus reconstructed t′ quark mass, we set upper limits on the t′t′ production cross section and exclude a standard model fourth-generation t′ quark decaying to Wb (Wq) with mass below 358 (340)  GeV/c2 at 95% C.L.
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CDF COLLABORATION. Search for a Heavy Toplike Quark in pp Collisions at √s=1.96  TeV. In: Physical Review Letters, 2011, vol. 107, n° 26, p. 261801. https://archive-ouverte.unige.ch/unige:38751

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Deposited on : 2014-07-21

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