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Open Access item 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
ISSN:0031-9007
E-ISSNmetadata.dc.identifier.doi = DOI:1079-7114
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Appears in Collections:(IFIC) Artículos
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