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Interplay between weak and strong phases and direct CP violation from the charmless B-meson decays
Zhou, YF; Wu, YL; Ng, JN; Geng, CQ; Zhou, YF , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.
2001
发表期刊PHYSICAL REVIEW D
ISSN0556-2821
卷号63期号:5页码:-
摘要We present a general analysis on charmless B-meson decays B --> pi pi and piK. It is noticed that the final state interactions and inelastic rescattering effects must be significant in order to understand the consistency of the current data. By using general isospin decompositions, the isospin amplitudes and the corresponding strong phases could be extracted from a global chi (2) fit Of the experimental data. We emphasize that in general there are two. rather than one, relative strong phases in the decomposition. In the assumption of two equal strong phases as considered in the literature, the current data, especially the ones concerning Bi --> pi K-o(o(+/-)) decays, will imply a large isospin amplitude \a(3/2)(c)\>40, which is larger by a factor of 5 than the one from the naive factorization estimation. When two different strong phases are considered, all the isospin amplitudes can become, within the la level, comparable with the theoretical values. We also show that the difference between the two strong phases cannot be too large and will be restricted by the most recent upper bound of B --> pi (o)pi (o) decay. In any case, the strong phases are found to be large and the branching ratio of B --> pi (o)pi (o) is likely to be enhanced by an order of magnitude in comparison with the one obtained from the naive factorization approach. Direct CP violations in all decay modes are also calculated and found to be close to the sensitivity of the present experiments.
部门归属Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Natl Ctr Theoret Sci, Hsinchu 300, Taiwan; TRIUMF, Vancouver, BC V6T 2A3, Canada; Natl Tsing Hua Univ, Dept Phys, Hsinchu 300, Taiwan
关键词Ckm Angle-gamma State Interaction Phases Pi-k Decays Penguin Diagrams B->k-pi Decays Electroweak Factorization Constraints Physics Tests
学科领域Physics
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收录类别SCI
WOS记录号WOS:000167258000029
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被引频次:21[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/12806
专题理论物理所1978-2010年知识产出
通讯作者Zhou, YF , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.
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Zhou, YF,Wu, YL,Ng, JN,et al. Interplay between weak and strong phases and direct CP violation from the charmless B-meson decays[J]. PHYSICAL REVIEW D,2001,63(5):-.
APA Zhou, YF,Wu, YL,Ng, JN,Geng, CQ,&Zhou, YF , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China..(2001).Interplay between weak and strong phases and direct CP violation from the charmless B-meson decays.PHYSICAL REVIEW D,63(5),-.
MLA Zhou, YF,et al."Interplay between weak and strong phases and direct CP violation from the charmless B-meson decays".PHYSICAL REVIEW D 63.5(2001):-.
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