Observation of B --> eta' K* and Evidence for B --> eta' rho+

The BABAR Collaboration, B. Aubert

We present an observation of $B\to {\eta }^{\prime }{K}^{\ast }$. The data sample corresponds to 232 million $B\bar{B}$ pairs collected with the BABAR detector at the PEP-II asymmetric-energy $B$ F…