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题名: QCD FACTORIZATION BASED ON SIX-QUARK OPERATOR EFFECTIVE HAMILTONIAN FROM PERTURBATIVE QCD AND CHARMLESS BOTTOM MESON DECAYS B((s)) -> pi pi, pi K, KK
作者: Su, Fang ;  Wu, Yue-Liang ;  Yang, Yi-Bo ;  Zhuang, Ci
刊名: INTERNATIONAL JOURNAL OF MODERN PHYSICS A
出版日期: 2010
卷号: 25, 期号:1, 页码:69-111
关键词: RENORMALIZATION ;  REGULARIZATION ;  PARAMETERS ;  EXTRACTION
学科分类: Physics
通讯作者: Su, F , Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China, Peoples R China
部门归属: [Su, F; Wu, YL; Yang, YB; Zhuang, C] Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China; [Su, F] Rhein Westfal TH Aachen, Inst Theoret Phys E, D-52056 Aachen, Germany; [Yang, YB] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
英文摘要: The charmless bottom meson decays are systematically investigated based on an approximate six-quark operator effective Hamiltonian from perturbative QCD. It is shown that within this framework the naive QCD factorization method provides a simple way to evaluate the hadronic matrix elements of two-body mesonic decays. The singularities caused by on mass-shell quark propagator and gluon exchanging interaction are appropriately treated. Such a simple framework allows us to make theoretical predictions for the decay amplitudes with reasonable input parameters. The resulting theoretical predictions for all the branching ratios and CP asymmetries in the charmless B(0), B(+), B(s) -> pi pi, pi K, KK decays are found to be consistent with the current experimental data except for a few decay modes. The observed large branching ratio in B -> pi(0)pi(0) decay remains a puzzle though the predicted branching ratio may be significantly improved by considering the large vertex corrections in the effective Wilson coefficients. More precise measurements of charmless bottom meson decays, especially on CP violations in B -> KK and B(s) -> pi pi, pi K, KK decay modes, will provide a useful test and guide us to a better understanding on perturbative and nonperturbative QCD.
收录类别: SCI
原文出处: 查看原文
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5183
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Su, Fang,Wu, Yue-Liang,Yang, Yi-Bo,et al. QCD FACTORIZATION BASED ON SIX-QUARK OPERATOR EFFECTIVE HAMILTONIAN FROM PERTURBATIVE QCD AND CHARMLESS BOTTOM MESON DECAYS B((s)) -> pi pi, pi K, KK[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS A,2010,25(1):69-111.
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文件名: QCD FACTORIZATION BASED ON SIX-QUARK OPERATOR EFFECTIVE HAMILTONIAN FROM PERTURBATIVE QCD AND CHARMLESS BOTTOM MESON DECAYS B.pdf
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