Improved Upper Limits on the FCNC Decays $B\to K{\ell }^{+}{\ell }^{-}$ and $B\to K^{\ast }(892){\ell }^{+}{\ell }^{-}$

S. Anderson, CLEO Collaboration

We have searched a sample of 9.6 million BBbar events for the flavor-changing neutral current decays B -> K l^+ l^- and B -> K^*(892) l^+ l^-. We subject the latter decay to the re…