Isospin relation and SU(3) breaking effects of strong phases in charmless B decays
文献类型：期刊论文
| 作者 | Wu, Yue-Liang ; Zhou, Yu-Feng; Wu, YL , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.
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| 刊名 | EUROPEAN PHYSICAL JOURNAL C
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| 出版日期 | 2004 |
| 卷号 | 32期号:0页码:S179-S189 |
| ISSN号 | 1434-6044 |
| 英文摘要 | Isospin and flavor SU(3) relations in charmless hadronic B decays B -> pi pi, pi K are investigated in detail with paying attention to the SU(3) symmetry breaking effects in both amplitudes and strong phases. In general, the isospin and the flavor SU(3) structure of the effective Hamiltonian provide several relations among the amplitudes and strong phases. Whereas a global fit to the latest data shows that some relation seems not to be favorable for a consistent explanation to the current data within the standard model (SM). By considering several patterns of SU(3) breaking, the amplitudes and the corresponding strong phases are extracted and compared with the theoretical estimations. It is found that in the case of SU(3) limits and also the case with SU(3) breaking only in amplitudes, the fitting results lead to an unexpected large ratio between two isospin amplitudes a(3)(c)/2/a(3)(u)/2, which is about an order of magnitude larger than the SM prediction. The results are found to be insensitive to the weak phase gamma. By including SU(3) breaking effects on the strong phases, one is able to obtain a consistent fit to the current data within the SM, which implies that the SU(3) breaking effect on strong phases may play an important role in understanding the observed charmless hadronic B decay modes B -> pi pi and pi K. It is possible to test those breaking effects in the near future from more precise measurements of direct CP violation in B factories. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000207562800008 |
| 公开日期 | 2012-08-30 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/14055]  |
| 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 | Wu, YL , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Wu, Yue-Liang,Zhou, Yu-Feng,Wu, YL , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.. Isospin relation and SU(3) breaking effects of strong phases in charmless B decays[J]. EUROPEAN PHYSICAL JOURNAL C,2004,32(0):S179-S189. |
| APA | Wu, Yue-Liang,Zhou, Yu-Feng,&Wu, YL , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China..(2004).Isospin relation and SU(3) breaking effects of strong phases in charmless B decays.EUROPEAN PHYSICAL JOURNAL C,32(0),S179-S189. |
| MLA | Wu, Yue-Liang,et al."Isospin relation and SU(3) breaking effects of strong phases in charmless B decays".EUROPEAN PHYSICAL JOURNAL C 32.0(2004):S179-S189. |
入库方式： OAI收割
来源：理论物理研究所
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