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Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/46536
Title: Search for a Heavy Toplike Quark in pp̅ Collisions at √s=1.96  TeV
Authors: Aaltonen, T.; Álvarez González, B.; Casal, Bruno; Cuevas, Javier; Gómez, G.; Rodrigo, Teresa; Ruiz Jimeno, Alberto; Scodellaro, Luca; Vila, Iván; Vila, Iván; Cabrera, Susana; Cuenca Almenar, Cristóbal
Issue Date: Dec-2011
Publisher: American Physical Society
Citation: Physical Review Letters 107(26): 261801 (2011)
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 pp̅ 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′t̅ ′ 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.
Description: 8 páginas, 3 figuras, 3 tablas.-- CDF Collaboration: et al.
Publisher version (URL): http://dx.doi.org/10.1103/PhysRevLett.107.261801
URI: http://hdl.handle.net/10261/46536
DOI: 10.1103/PhysRevLett.107.261801
ISSN: 0031-9007
E-ISSN: 1079-7114
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