Reexamining charmless B -> PV decays in the QCD factorization approach

CORC > 理论物理研究所 > 中国科学院理论物理研究所 > 理论物理所科研产出 > 理论物理所1978-2010年知识产出

	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
刊名	PHYSICAL REVIEW D
	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
ISSN号	1550-7998
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.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000238698300051
公开日期	2012-08-02
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/5973]
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	Yang, YD , Henan Normal Univ, Dept Phys, Xinxiang 453007, Henan, Peoples R China, Peoples R China
推荐引用方式 GB/T 7714	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):-.