Search for a heavy top t' to Wq in top events

Abstract

We present a search for a massive quark (t') decaying to Wq and thus mimicking the top quark decay signature in data collected by the CDF II detector corresponding to 2.8 fb^-1. We use the reconstructed mass of the t' quark and the scalar sum of the transverse energies in the event to discriminate possible new physics from Standard Model processes, and set limits on a standard 4th generation t' quark.Comment: To be published in the proceedings of DPF-2009, Detroit, MI, July 2009, eConf C09072