Abstrak

In this paper, we analyze the hadronic decay of B+c→ J/ψ a1(1260)+ in a perturbative QCD approach (pQCD), where a1(1260) is an axial-vector meson and J/ψ is a vector meson. The experimental data for the branching ratio of this decay are less than (1.2 × 10−3). We find that the branching ratio is (1.02+0.04+0.03+0.01−0.08−0.05−0.01) × 10−3 and that it has a good agreement with the experimental result.