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题名: Reexamining charmless B -> PV decays in the QCD factorization approach
作者: Li, Xinqiang ;  Yang, Yadong
刊名: PHYSICAL REVIEW D
出版日期: 2006
卷号: 73, 期号:11, 页码:-
关键词: CKM ANGLE-GAMMA ;  TO-LEADING ORDER ;  PI-K DECAYS ;  CP-VIOLATION ;  BRANCHING RATIOS ;  MESON DECAYS ;  DISTRIBUTION AMPLITUDES ;  PENGUIN CONTRIBUTIONS ;  STRONG PHASES ;  FINAL-STATES
学科分类: Physics
通讯作者: Yang, YD , Henan Normal Univ, Dept Phys, Xinxiang 453007, Henan, Peoples R China, Peoples R China
部门归属: Henan Normal Univ, Dept Phys, Xinxiang 453007, Henan, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
英文摘要: Using the QCD factorization approach, we reexamine the two-body hadronic charmless B-meson decays to final states involving a pseudoscalar (P) and a vector (V) meson, with inclusion of the penguin contractions of spectator-scattering amplitudes induced by the b -> Dg(*)g(*) (where D=d or s, and g(*) denotes an off-shell gluon) transitions, which are of order alpha(2)(s). Their impacts on the CP-averaged branching ratios and CP-violating asymmetries are examined. We find that these higher order penguin contraction contributions have significant impacts on some specific decay modes. Since B ->pi K-*, K rho decays involve the same electroweak physics as B ->pi K puzzles, we present a detailed analysis of these decays and find that the five R-ratios for the B ->pi K-*, K rho system are in agreement with experimental data except for R(pi K-*). Generally, these new contributions are found to be important for penguin-dominated B -> PV decays.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000238698300051
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5973
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Li, Xinqiang,Yang, Yadong. Reexamining charmless B -> PV decays in the QCD factorization approach[J]. PHYSICAL REVIEW D,2006,73(11):-.
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