Constraining charming penguins in charmless B -> pi pi, pi K and KK decays
文献类型：期刊论文
| 作者 | Zhou, Yu-Feng ; Wu, YL , Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, Key Lab Frontiers Theoret Phys, Beijing 100080, Peoples R China; Wu, Yue-Liang; Zhuang, Ci
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| 刊名 | JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
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| 出版日期 | 2010 |
| 卷号 | 37期号:2页码:- |
| 关键词 | Final-state Interactions Direct Cp Violation Enhanced Branching Ratio Spectator Scattering 2 Pseudoscalars Standard Model Su(3) Symmetry Rare Decays Amplitudes Physics |
| ISSN号 | 0954-3899 |
| 英文摘要 | We discuss the correlations induced by the charming penguin contributions to B -> pi pi, pi K and KK modes in the flavor SU(3) diagrammatic approach. Strong constraints are found from the measurements of the direct CP asymmetries, especially that of pi K modes. We make global fits to the latest data, and show that only a relatively small charming penguin is allowed. In the presence of the charming penguin, the size of color-suppressed tree amplitude (C) relative to that of tree amplitude (T) still remains large C/T similar or equal to 0.6, which disfavors the possibility of a large charming penguin alone as an explanation for the pi pi puzzle. We find that this conclusion remains unchanged for various SU(3) breaking schemes. Nevertheless, together with an enhanced annihilation-type W-exchange diagram (E) which is allowed by the current data, the ratio C/T can be reduced to similar to 0.4. We show that a small charming penguin amplitude can still have significant contribution to the time-dependent CP asymmetry in the K(S)K(S) mode. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000273656900008 |
| 公开日期 | 2012-08-02 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/5173]  |
| 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, Kavli Inst Theoret Phys China, Key Lab Frontiers Theoret Phys, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Yu-Feng,Wu, YL , Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, Key Lab Frontiers Theoret Phys, Beijing 100080, Peoples R China,Wu, Yue-Liang,et al. Constraining charming penguins in charmless B -> pi pi, pi K and KK decays[J]. JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS,2010,37(2):-. |
| APA | Zhou, Yu-Feng,Wu, YL , Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, Key Lab Frontiers Theoret Phys, Beijing 100080, Peoples R China,Wu, Yue-Liang,&Zhuang, Ci.(2010).Constraining charming penguins in charmless B -> pi pi, pi K and KK decays.JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS,37(2),-. |
| MLA | Zhou, Yu-Feng,et al."Constraining charming penguins in charmless B -> pi pi, pi K and KK decays".JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS 37.2(2010):-. |
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来源：理论物理研究所
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