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 p (p) over bar collisions at root 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) over bar' production cross section and exclude a standard model fourth-generation t' quark decaying to Wb (Wq) with mass below 358 (340) GeV/c(2) at 95% C. L.

T., A., B., Á.G., S., A., D., A., A., A., A., A., et al. (2011). Search for a Heavy Toplike Quark in p(p)over-bar Collisions at root s=1.96 TeV. PHYSICAL REVIEW LETTERS, 107(26), 261801-1-261801-8 [10.1103/PhysRevLett.107.261801].

Search for a Heavy Toplike Quark in p(p)over-bar Collisions at root s=1.96 TeV

BARRIA, PATRIZIA;GAROSI, PAOLA;RUFFINI, FABRIZIO;SCRIBANO, ANGELO;SQUILLACIOTI, PAOLA;TURINI, NICOLA;
2011-01-01

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 p (p) over bar collisions at root 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) over bar' production cross section and exclude a standard model fourth-generation t' quark decaying to Wb (Wq) with mass below 358 (340) GeV/c(2) at 95% C. L.
2011
T., A., B., Á.G., S., A., D., A., A., A., A., A., et al. (2011). Search for a Heavy Toplike Quark in p(p)over-bar Collisions at root s=1.96 TeV. PHYSICAL REVIEW LETTERS, 107(26), 261801-1-261801-8 [10.1103/PhysRevLett.107.261801].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/39563
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