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Two-body B Meson Decays to eta and eta': Observation of B->eta K*

The CLEO Collaboration·S. J. Richichi
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Abstract

In a sample of 19 million produced B mesons, we have observed the decays B -> eta K* and improved our previous measurements of B -> eta'K. The branching fractions we measure for these decay modes are BR(B+ -> eta K*+) = (26.4 +9.6-8.2 +- 3.3) x $10^{-6}$, BR(B0 -> eta K*0) = (13.8 +5.5-4.6 +- 1.6) x $10^{-6}$, BR(B+ -> eta' K+) = (80 +10-9 +- 7) x $10^{-6}$ and BR(B0 -> eta' K0) = (89 +18-16 +- 9) x $10^{-6}$. We have searched with comparable sensitivity for related decays and report upper limits for these branching fractions.

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The CLEO Collaboration, S. J. Richichi. 1999-12-23. Two-body B Meson Decays to eta and eta': Observation of B->eta K*. https://doi.org/10.1103/physrevlett.85.520

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