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Reexamining charmless B -> PV decays in the QCD factorization approach
Li, Xinqiang; Yang, Yadong; Yang, YD , Henan Normal Univ, Dept Phys, Xinxiang 453007, Henan, Peoples R China, Peoples R China
2006
发表期刊PHYSICAL REVIEW D
ISSN1550-7998
卷号73期号:11页码:-
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.
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
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
学科领域Physics
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收录类别SCI
WOS记录号WOS:000238698300051
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被引频次:12[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/311006/5973
专题理论物理所1978-2010年知识产出
通讯作者Yang, YD , Henan Normal Univ, Dept Phys, Xinxiang 453007, Henan, Peoples R China, Peoples R China
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Li, Xinqiang,Yang, Yadong,Yang, YD , Henan Normal Univ, Dept Phys, Xinxiang 453007, Henan, Peoples R China, Peoples R China. Reexamining charmless B -> PV decays in the QCD factorization approach[J]. PHYSICAL REVIEW D,2006,73(11):-.
APA Li, Xinqiang,Yang, Yadong,&Yang, YD , Henan Normal Univ, Dept Phys, Xinxiang 453007, Henan, Peoples R China, Peoples R China.(2006).Reexamining charmless B -> PV decays in the QCD factorization approach.PHYSICAL REVIEW D,73(11),-.
MLA Li, Xinqiang,et al."Reexamining charmless B -> PV decays in the QCD factorization approach".PHYSICAL REVIEW D 73.11(2006):-.
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