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arXiv · hep-ph/9507283

A new method of determining $|V_{ub}|$ by the processes $\bar{B} \to ρl \barν$ and $\bar{B} \to K^* l \lbar$

A. I. Sanda·Atsushi Yamada
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Abstract

The differential decay width of the process $\bar{B} \rightarrow ρl \barν$ is related to that of the process $\bar{B} \rightarrow K^* l \lbar$ by using $SU(3)$-flavor symmetry and the heavy quark symmetry. The ratio of the Kobayashi-Maskawa matrix elements is obtained in the zero recoil limit of $ρ$ and $K^*$, allowing a determination of $|V_{ub}|$.

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A. I. Sanda, Atsushi Yamada. 1995-07-11. A new method of determining $|V_{ub}|$ by the processes $\bar{B} \to ρl \barν$ and $\bar{B} \to K^* l \lbar$. https://doi.org/10.1103/physrevlett.75.2807

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