; Li, Run-Hui
; Lue, Cai-Dian] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
; [Li, Run-Hui] Shandong Univ, Dept Phys, Jinan 250100, Peoples R China
; [Lue, Cai-Dian] Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China
We investigate the B -> a(1)(1260)(b(1)(1235))pi(K) decays under the factorization scheme and find many discrepancies between theoretical predictions and the experimental data. In the tree-dominated processes, large contributions from color-suppressed tree diagrams are required in order to accommodate the large decay rates of B--> a(1)(0)pi(-) and B--> a(1)(-)pi(0). For (B)overbar(0)->(a(1)(+),b(1)(+))K- decays which are induced by b -> s transition, theoretical predictions on their decay rates are larger than the data by a factor of 2.8 and 5.5, respectively. Large electroweak penguins or some new mechanism are expected to explain the branching ratios of B--> b(1)(0)K(-) and B--> a(1)(-)(K)overbar(0). The soft-collinear effective theory has the potential to explain large decay rates of B--> a(1)(0)pi(-) and B--> a(1)(-)pi(0) via a large hard-scattering form factor zeta(B -> a)(J)(1). We will also show that, with proper charming penguins, predictions on the branching ratios of (B)overbar(0)->(a(1)(+),b(1)(+))K- can also be consistent with the data.