Abstract:
We report a measurement of the tt-bar production cross
section using dilepton events with jets and missing
transverse energy in pp-bar collisions at a center-of-
mass energy of 1.96 TeV. Using a 197±12 pb-1 data
sample recorded by the upgraded Collider Detector at
Fermilab, we use two complementary techniques to select
candidate events. We compare the number of observed
events and selected kinematical distributions with the
predictions of the standard model and find good
agreement. The combined result of the two techniques
yields a tt-bar production cross section of 7.0+2.4
-2.1(stat)+1.6-1.1(syst)±0.4(lum) pb.
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