  We present a measurement of the top quark pair (ttbar) production cross
section in ppbar collisions at a center-of-mass energy of 1.96 TeV using 230
pb-1 of data collected by the DO detector at the Fermilab Tevatron Collider. We
select events in the dilepton final states ee, emu and mumu based on
kinematical properties consistent with ttbar events. For a top quark mass of
175 GeV, we measure a top pair production cross section sigma(ttbar) = 8.6
+3.2-2.7 (stat) +/-1.1 (syst) +/-0.6 (lumi) pb, in good agreement with the
standard model prediction.
