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

S. Rai Choudhury·A. S. Cornell·Naveen Gaur
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Abstract

The sensitivity of the $B \to πK$ mode to electroweak penguins and the recent experimental data for the $B \to ππ$, $πK$ modes has given rise to what is known as the ``$B \to πK$ 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 $b \to s \ell^+ \ell^-$.

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S. Rai Choudhury, A. S. Cornell, Naveen Gaur. 2004-10-05. The effects of enhanced Z penguins on lepton polarizations in $B \to X_s \ell^+ \ell^-$. https://doi.org/10.1103/physrevd.70.057501

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