Reexamining charmless B -> PV decays in the QCD factorization approach
文献类型：期刊论文
| 作者 | 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
 |
| 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 |
| 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 |
| 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):-. |
入库方式： OAI收割
来源：理论物理研究所
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