We present the first direct experimental bound on the total
decay width of the top quark using 955 pb-1 of the Tevatron's p anti-p
collisions recorded by the Collider Detector at Fermilab. We identify
253 top-antitop pair candidate events. The distribution of reconstructed
top quark mass from these events is fitted to templates representing
different values of the top quark width. Using a confidence interval
based on likelihood ratio ordering, we extract an upper limit at 95%
C.L. of Gamma_t < 13.1 GeV for an assumed top quark mass of 175 GeV/c2.
Return to top of page.
Go to Physics Results
Updated: Wednesday, 2009 February 11 15:00:13 CST automatically from input from carol picciolo