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Search for resonant production of tt decaying to jets in pp collisions at s√=1.96  TeV

CollaborationWith : Clark, Allan Geoffrey / Garcia Navarro, Jose Enrique / Lister, Alison / Wu, Xin
Published in Physical Review. D. 2011, vol. 84, no. 07, p. 072003
Abstract This paper reports a search for nonstandard model topquark resonances, Z′, decaying to tt→W+bW−b, where both W decay to quarks. We examine the top-antitop quark invariant mass spectrum for the presence of narrow resonant states. The search uses a data sample of pp collisions at a center of mass energy of 1.96 TeV collected by the CDF II detector at the Fermilab Tevatron, with an integrated luminosity of 2.8  fb−1. No evidence for top-antitop quark resonant production is found. We place upper limits on the production cross section times branching ratio for a specific topcolor assisted technicolor model in which the Z′ has a width of ΓZ′=0.012MZ′. Within this model, we exclude a Z′ boson with masses below 805  GeV/c2 at the 95% confidence level.
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CDF COLLABORATION. Search for resonant production of tt decaying to jets in pp collisions at s√=1.96  TeV. In: Physical Review. D, 2011, vol. 84, n° 07, p. 072003. https://archive-ouverte.unige.ch/unige:38702

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Deposited on : 2014-07-15

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