Measurements of the Top Pair Production Cross Section 
in the Dilepton Channel at CDF

The top quark is the heaviest particle yet observed. 
With the possibility for the massive top to couple 
to new physics at high energy scales, CDF has many
complementary analyses in each top decay channel
provide strong tests the Standard Model and physics
beyond.  We present three measurements of the top
production cross section in the dilepton channel
section from $p\bar{p}$ collisions at 1.96 TeV using 
$0.35-1$ fb$^{-1}$ of data recorded by the CDF 2 detector. 

When both W bosons from the top quark decays decay leptonically
the characteristic signature are two leptons, two jets
and large imbalance in transverse energy. In the first
measurement we use a fit in the 
missing transverse energy and jet multiplicity plane 
to extract the top pair component. We also apply a 
more standard counting technique to dilepton
events with at least one $b$-tagged jet. Finally we 
search for events in which one of the two final 
leptons is a tau and set a limit on the probability
that the observed events comes solely from non top sources.