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 | Su, Fang1,2; Wu, Yue-Liang1; Yang, Yi-Bo1,3; Zhuang, Ci1 |
| 刊名 | International journal of modern physics a
 |
| 出版日期 | 2010-01-10 |
| 卷号 | 25期号:1页码:69-111 |
| ISSN号 | 0217-751X |
| 关键词 | Six-quark operator Qcd factorization Charmless b meson decays |
| DOI | 10.1142/s0217751x10048044 |
| 通讯作者 | Su, fang() |
| 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. |
| WOS关键词 | RENORMALIZATION ; REGULARIZATION ; PARAMETERS ; EXTRACTION |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Nuclear ; Physics, Particles & Fields |
| 语种 | 英语 |
| 出版者 | WORLD SCIENTIFIC PUBL CO PTE LTD |
| WOS记录号 | WOS:000274879600003 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2412471 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Su, Fang |
| 作者单位 | 1.Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China 2.Rhein Westfal TH Aachen, Inst Theoret Phys E, D-52056 Aachen, Germany 3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 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.(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. |
入库方式： iSwitch采集
来源：中国科学院大学
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。