We describe a search for a third generation vector leptoquark
(VLQ3) that decays to a b quark and tau lepton using the CDF II detector
and 322 pb-1 of integrated luminosity from the Fermilab Tevatron. Vector
leptoquarks have been proposed in many extensions of the standard model
(SM). Observing a number of events in agreement with SM expectations,
assuming Yang-Mills (minimal) couplings, we obtain the most stringent
upper limit on the VLQ3 pair production cross section of 344 fb (493 fb)
and lower limit on the VLQ3 mass of 317 GeV/c2 (251 GeV/c2) at 95% C.L.
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Updated: Wednesday, 2008 June 11 14:59:38 CDT automatically from input from carol picciolo