We present the results of a search for pair production of
a new heavy top-like quark t' decaying to a W boson and another quark
using the CDF II detector in Run II of the Tevatron p anti-p collider.
Using a data sample corresponding to 760 pb-1 of integrated luminosity,
we fit the observed spectrum of total transverse energy and reconstructed
t' quark mass to a combination of standard model processes and t' pair
production. We see no evidence for t' t-bar' production, and we infer
a lower limit of 256 GeV/c2 on the mass of the t' at 95% CL assuming
standard strong couplings for the t'.
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Updated: Friday, 2008 April 25 09:59:16 CDT automatically from input from carol picciolo