Speaker
Dr
Anjan Giri
(National Institute of Technology, Rourkela, India)
Description
We study the effect of non-universal Z' boson in the decay modes B -> K pi. In the standard model these modes receive dominant contributions from b -> s QCD penguins. Therefore, in this limit one expects $S_{\pi^0 K^0} \approx \sin 2 \beta $, $A_{\pi^0 K^0} \approx 0$ and $A_{\pi^0 K^-} \approx A_{\pi^+ K^-}$. The corrections due to the presence of small non-penguin contributions is found to yield $S_{\pi^0 K^0} > \sin 2 \beta $ and $\Delta A_{CP}(K \pi) \simeq 2.5 %$. However, the measured value of $S_{\pi^0 K^0}$ is less than $ \sin 2 \beta $ and $\Delta A_{CP}(K \pi) \simeq 15 %$. We show the model with a non-universal Z' boson can successfully explain these anomalies
Primary author
Dr
Anjan Giri
(National Institute of Technology, Rourkela, India)
