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Wu, Yue-Liang; Zhou, Yu-Feng; Zhuang, Ci; Wu, YL , Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, Key Lab Frontiers Theoret Phys, Beijing 100080, Peoples R China
Constraining charming penguins in charmless B -> pi pi, pi K and KK decays
Source PublicationJOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
KeywordFinal-state Interactions Direct Cp Violation Enhanced Branching Ratio Spectator Scattering 2 Pseudoscalars Standard Model Su(3) Symmetry Rare Decays Amplitudes Physics
AbstractWe 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.
2010
ISSN0954-3899
Volume37Issue:2Pages:-
Subject AreaPhysics
Indexed BySCI
Funding OrganizationNational Science Foundation of China (NSFC)[10475105, 10491306]; Key Project of Chinese Academy of Sciences (CAS) ; National Science Foundation of China (NSFC)[10475105, 10491306]; Key Project of Chinese Academy of Sciences (CAS) ; National Science Foundation of China (NSFC)[10475105, 10491306]; Key Project of Chinese Academy of Sciences (CAS) ; National Science Foundation of China (NSFC)[10475105, 10491306]; Key Project of Chinese Academy of Sciences (CAS)
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/5173
Collection理论物理所科研产出_SCI论文
Corresponding AuthorWu, YL , Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, Key Lab Frontiers Theoret Phys, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Wu, Yue-Liang,Zhou, Yu-Feng,Zhuang, Ci,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 Wu, Yue-Liang,Zhou, Yu-Feng,Zhuang, Ci,&Wu, YL , Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, Key Lab Frontiers Theoret Phys, Beijing 100080, Peoples R China.(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 Wu, Yue-Liang,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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