We report the measurements of the tt-bar production cross
section and of the top quark mass using 1.02 fb-1 of pp-bar data collected
with the CDF II detector at the Fermilab Tevatron. We select events
with six or more jets on which a number of kinematical requirements
are imposed by means of a neural network algorithm. At least one of
these jets must be identified as initiated by a b-quark candidate by the
reconstruction of a secondary vertex. The cross section is measured to be
sigma_tt-bar ø.3 +/- 1.0(stat.)+2.0_-1.5(syst.) +/- 0.5(lumi.) pb, which
is consistent with the standard model prediction. The top quark mass of
174.0 +/- 2.2(stat.) +/- 4.8(syst.) GeV/c2 is derived from a likelihood
fit incorporating reconstructed mass distributions representative of
signal and background.
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Updated: Tuesday, 2007 October 30 13:02:03 CDT automatically from input from carol picciolo