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We use the decay modes $B \to K^*_0(1430) \pi$ and $B \to a_0(980) K$ tostudy the scalar mesons $K^*_0(1430)$ and $a_0(980)$ within perturbative QCDframework. For $B \to K^*_0(1430) \pi$, we perform our calculation in twoscenarios of the scalar meson spectrum. The results indicate that scenario IIis more favored by experimental data than scenario I. The importantcontribution from annihilation diagrams can enhance the branching ratios about50% in scenario I, and about 30% in scenario II. The predicted branching ratioof $B \to a_0(980) K$ in scenario I is also less favored by the experiments.The direct CP asymmetries in $B \to K^*_0(1430) \pi$ are small, which areconsistent with the present experiments.Comment: More references are added. Published Versio

Study of K* 0(1430) and a0(980) from B→K* 0(1430)π and B→a0(980)K decays