We present an analysis of two-body $B$ decays with a pseudoscalar ($P$) and an axial-vector meson ($\mathcal{A}$) in the final state using factorization. We employ as inputs a limited number of experimental data, i.e. results for the $B\to K_1\gamma$, and $B\to K^{*}\gamma$ radiative decays and the branching ratios for $B\to \pi \rho$, $\pi K^{*}$, $K\rho$, $K\pi$ nonleptonic decays. In this way we are able to compare our predictions with recent data from the Belle and BABAR collaborations on $B\to a_1\pi$ and make predictions on several other $B\to P\mathcal{A}$ decay channels, which might be used as a guide for experimental researches and as tests of factorization.

• Received 14 June 2006

DOI:https://doi.org/10.1103/PhysRevD.74.054035