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

Abstract

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 ``$B\to \pi K$ puzzle''. Recently it has been observed that this {\sl puzzle} can be resolved by considering the new physics which can enter via $Z^0$ penguins. In this note we analyze the effect of this enhanced $Z^0$ penguins on the lepton polarization asymmetries of $b\to s{\ell }^{+}{\ell }^{-}$.

Published version

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Cited by in corpus (4)

• Waiting for Precise Measurements of K^+->pi^+ nu nu and K_L->pi^0 nu nu
• K^+ -> pi^+ nu nu-bar and K_L -> pi^0 nu nu-bar Decays in the General MSSM
• Lepton polarization asymmetries for $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$: A Model Independent approach
• The B -> pi pi, pi K Puzzles: Implications for Hadron Physics, New Physics and Rare Decays