QCD FACTORIZATION BASED ON SIX-QUARK OPERATOR EFFECTIVE HAMILTONIAN FROM PERTURBATIVE QCD AND CHARMLESS BOTTOM MESON DECAYS B((s)) -> pi pi, pi K, KK
文献类型：期刊论文
| 作者 | Yang, Yi-Bo ; Su, F , Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China, Peoples R China; Su, Fang; Wu, Yue-Liang; Zhuang, Ci
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| 刊名 | INTERNATIONAL JOURNAL OF MODERN PHYSICS A
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| 出版日期 | 2010 |
| 卷号 | 25期号:1页码:69-111 |
| 关键词 | Renormalization Regularization Parameters Extraction |
| ISSN号 | 0217-751X |
| 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. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| 公开日期 | 2012-08-02 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/5183]  |
| 专题 | 理论物理研究所_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 |
| 推荐引用方式 GB/T 7714 | Yang, Yi-Bo,Su, F , Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China, Peoples R China,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[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS A,2010,25(1):69-111. |
| APA | Yang, Yi-Bo,Su, F , Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China, Peoples R China,Su, Fang,Wu, Yue-Liang,&Zhuang, Ci.(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 | 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".INTERNATIONAL JOURNAL OF MODERN PHYSICS A 25.1(2010):69-111. |
入库方式： OAI收割
来源：理论物理研究所
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