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QCD FACTORIZATION BASED ON SIX-QUARK OPERATOR EFFECTIVE HAMILTONIAN FROM PERTURBATIVE QCD AND CHARMLESS BOTTOM MESON DECAYS B((s)) -> pi pi, pi K, KK
Su, Fang; Wu, Yue-Liang; Yang, Yi-Bo; Zhuang, Ci; Su, F , Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China, Peoples R China
2010
发表期刊INTERNATIONAL JOURNAL OF MODERN PHYSICS A
ISSN0217-751X
卷号25期号:1页码:69-111
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.
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
关键词Renormalization Regularization Parameters Extraction
学科领域Physics
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收录类别SCI
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5183
专题理论物理所1978-2010年知识产出
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
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GB/T 7714
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.
APA Su, Fang,Wu, Yue-Liang,Yang, Yi-Bo,Zhuang, Ci,&Su, F , Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China, Peoples R China.(2010).QCD FACTORIZATION BASED ON SIX-QUARK OPERATOR EFFECTIVE HAMILTONIAN FROM PERTURBATIVE QCD AND CHARMLESS BOTTOM MESON DECAYS B((s)) -> pi pi, pi K, KK.INTERNATIONAL JOURNAL OF MODERN PHYSICS A,25(1),69-111.
MLA Su, Fang,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".INTERNATIONAL JOURNAL OF MODERN PHYSICS A 25.1(2010):69-111.
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