The effects of enhanced Z penguins on lepton polarizations in $B\to X_s{\ell }^{+}{\ell }^{-}$

S. Rai Choudhury, A. S. Cornell, Naveen Gaur

The sensitivity of the $B\to \pi K$ mode to electroweak penguins and the recent experimental data for the $B\to \pi \pi$, $\pi K$ modes has given rise to what is known as the ``$B\to \pi K$ p…