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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
QCD FACTORIZATION BASED ON SIX-QUARK OPERATOR EFFECTIVE HAMILTONIAN FROM PERTURBATIVE QCD AND CHARMLESS BOTTOM MESON DECAYS B((s)) -> pi pi, pi K, KK
Source PublicationINTERNATIONAL JOURNAL OF MODERN PHYSICS A
KeywordRenormalization Regularization Parameters Extraction
AbstractThe 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.
2010
ISSN0217-751X
Volume25Issue:1Pages:69-111
Subject AreaPhysics
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/5183
CollectionSCI期刊论文
Corresponding AuthorSu, F , Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China, Peoples R China
Recommended Citation
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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