Two-Body B Meson Decays to $\eta$ and ${\eta }^{{}^{\prime }}$ - Observation of $B\to \eta K^{\ast }$

S. J. Richichi, CLEO Collaboration

In a sample of 19 million produced B mesons we have observed decays B -> eta K*, and improved our previous measurements of B -> eta' K. The branching fractions we measure for these…