Study of $K^*_0(1430)$ and $a_0(980)$ from $B\to K^*_0(1430)π$ and $B\to a_0(980)K$ Decays

Details Study of $K^*_0(1430)$ and $a_0(980)$ from $B\to K^*_0(1430)π$ and $B\to a_0(980)K$ Decays Study of $K^*_0(1430)$ and $a_0(980)$ from $B\to K^*_0(1430)π$ and $B\to a_0(980)K$ Decays

2006-10-28

arxiv.org/abs/hep-ph/0610380v3

Eur.Phys.J.C50:877-887,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

More references are added. Published Version

Scientific paper

10.1140/epjc/s10052-007-0231-9

We use the decay modes $B \to K^*_0(1430) \pi$ and $B \to a_0(980) K$ to study the scalar mesons $K^*_0(1430)$ and $a_0(980)$ within perturbative QCD framework. For $B \to K^*_0(1430) \pi$, we perform our calculation in two scenarios of the scalar meson spectrum. The results indicate that scenario II is more favored by experimental data than scenario I. The important contribution from annihilation diagrams can enhance the branching ratios about 50% in scenario I, and about 30% in scenario II. The predicted branching ratio of $B \to a_0(980) K$ in scenario I is also less favored by the experiments. The direct CP asymmetries in $B \to K^*_0(1430) \pi$ are small, which are consistent with the present experiments.

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