Search for $W (\rightarrow \ell \nu) W/Z (\rightarrow jet-jet)$ at CDF at the Tevatron

We present a combined search for $WW$ and $WZ$
diboson production in the semi-leptonic decay channel in
350 pb$^{-1}$ of Run~II $p \bar{p}$ data.  Central electrons 
and muons from the leptonic decay of the $W$ are used for 
the event trigger, and the shape of dijet mass spectrum 
is used to discriminate the hadronic $W/Z (\rightarrow 
jet-jet)$ decay from $W$ + jets background.  This channel 
is sensitive to events with very high boson $p_T$, making 
it particularly useful as a probe of boson couplings at 
high energies where new physics effects could be observed.