| Impacts of the Soft—Gluon Exchanges on B→ππ Decays |
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| 引用本文： | 吴向尧,李作宏.Impacts of the Soft—Gluon Exchanges on B→ππ Decays[J].中国物理快报,2002,19(11):1596-1598. |
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| 作者姓名： | 吴向尧 李作宏 |
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| 作者单位： | [1]InstituteofHighEnergyPhysics,ChineseAcademyofSciences,POBox918（4）,Beijing100039；DepartmentofPhysics,HuaibeiCoalIndustryTeachersCollege,Huangshan235000 [2]DepartmentofPhysics,YantaiU |
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| 摘 要： | We have investigated the role of soft-gluon exchanges in B→ππ,using the light-cone sum rules in quantum chromodynamics,The calculations are carried out not only for the tree operators but also for the penguin operators.We conclude that soft-gluon exchanges contribute to the decay amplitudes,noticeably on some decay channels,and thus cannot be neglected.
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| 关 键 词： | 量子色动力学 B→ππ衰变 软胶子交换 |
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