Abstract
We search for evidence of resonant top quark pair production in 955 of collisions at recorded with the CDF II detector at the Fermilab Tevatron. For fully reconstructed candidate events triggered on leptons with large transverse momentum and containing at least one identified -quark jet, we compare the invariant mass spectrum of pairs to the expected superposition of standard model , non- backgrounds, and a simple resonance model based on a sequential boson. We establish upper limits for in the mass interval from to . A topcolor leptophobic is ruled out below , and the cross section of any narrow -like state decaying to is found to be less than 0.64 pb at 95% C.L. for above .
- Received 30 October 2007
DOI:https://doi.org/10.1103/PhysRevD.77.051102
©2008 American Physical Society