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

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 5.6fb-1 collected by the CDF II detector in pp¯ collisions at s=1.96TeV. 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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Journal articles
Physical Review Letters, American Physical Society, 2011, 107, pp.261801. <10.1103/PHYSREVLETT.107.261801>
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http://hal.in2p3.fr/in2p3-00618320
Contributor : Swarna Bassava <>
Submitted on : Thursday, September 1, 2011 - 2:00:11 PM
Last modification on : Tuesday, October 28, 2014 - 6:00:17 PM

Citation

T. Aaltonen, B. Álvarez González, S. Amerio, D. Amidei, A. Anastassov, et al.. Search for a Heavy Toplike Quark in pp̅ Collisions at √s=1.96 TeV. Physical Review Letters, American Physical Society, 2011, 107, pp.261801. <10.1103/PHYSREVLETT.107.261801>. <in2p3-00618320>

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