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

被引：45
作者：
Shen, Y.-L. [1 ]
Wang, W. [1 ]
Zhu, J. [1 ]
Lu, C.-D. [1 ]
机构：
[1] CCAST, World Lab, Beijing 100080, Peoples R China
来源：
EUROPEAN PHYSICAL JOURNAL C | 2007年 / 50卷 / 04期
关键词：
D O I：
10.1140/epjc/s10052-007-0231-9
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We use the decay modes B -> K-0(*)(1430)pi and B -> a(0)(980)K to study the scalar mesons K-0(0)*(1430) and a(0)(980) within the framework of perturbative QCD. For B -> K-0(*)(1430)pi, we perform our calculation in two scenarios for the scalar meson spectrum. The results indicate that scenario II is more favored by the experimental data than scenario I. The important contribution from annihilation diagrams can enhance the branching ratios by about 50% in scenario I and about 30% in scenario II. The direct CP-asymmetries in B -> K-0(*)(1430)pi are small, which is consistent with the present experiments. The predicted branching ratio of B -> a(0)(980)K in scenario I differs from the experiments by a factor of 2, which indicates that a(0)(980) cannot be interpreted as (q) over barq.
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页码：877 / 887
页数：11
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