Evidence for the Rare Decay B -> K*ll and Measurement of the B -> Kll Branching Fraction

B. Aubert

We present evidence for the flavor-changing neutral current decay $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$ and a measurement of the branching fraction for the related process $B\to K{\ell }^{+}{\ell }^{-}$, w…