Annihilation contribution and B→a0π, f0K decays

被引：20
|
作者：
Delepine, D.
Lucio M., J. L.
Ramirez, C. A.
机构：
[1] Univ Guanajuato, Inst Fis, Leon 37150, Guanajuato, Spain
[2] Univ Ind Santander, Depto Fis, Bucaramanga, Colombia
来源：
EUROPEAN PHYSICAL JOURNAL C | 2006年 / 45卷 / 03期
关键词：
D O I：
10.1140/epjc/s2005-02432-5
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 analyze the B-0 -> a(0)(+/-)pi(-/+) and B--,B-0 -> f(0)K(-,0) decays and show that a consistent phenomenological picture can be obtained within the factorization approximation. In this approach the O-6, operator provides the dominant contributions to the suppressed channel B-0 -> a(0)(+)pi(-). An estimate of the annihilation form factor using perturbative QCD indicates that this contribution is not negligible, moreover interference with other penguin contributions includes a free parameter since the phase of the annihilation amplitude is not determined. Assumptions based on SU(2) isospin symmetry provide relations between different B decays involving one scalar and one pseudoscalar meson.
引用
收藏
页码：693 / 700
页数：8
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