Measurement of Decay Amplitudes of B -->(c cbar) Kstar with an Angular Analysis, for (c cbar)=J/psi, psi(2S) and chi_c1

Abstract

We perform the first three-dimensional measurement of the amplitudes of $B\to \psi (2S)K^{\ast }$ and $B\to {\chi }_{c1}{K}^{\ast }$ decays and update our previous measurement for $B\to J/\psi K^{\ast }$. We use a data sample collected with the BaBar detector at the PEP2 storage ring, corresponding to 232 million $B\bar{B}$ pairs. The longitudinal polarization of decays involving a $J^{PC}=1^{++}$ ${\chi }_{c1}$ meson is found to be larger than that with a $1^{--}$ $J/\psi$ or $\psi (2S)$ meson. No direct {\it CP}-violating charge asymmetry is observed.

Comments: 8 pages, 5 postscript figures