Charmless B-(s) -> VV decays in factorization-assisted topological-amplitude approach
文献类型：期刊论文
| 作者 | Li, Y; Wang, C; Zhang, QA; Lu, CD; Wang C(王超); Zhang QA(张其安); Lv CD(吕才典)
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| 刊名 | EUROPEAN PHYSICAL JOURNAL C
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| 出版日期 | 2017 |
| 卷号 | 77期号:5页码:333 |
| ISSN号 | 1434-6044 |
| DOI | 10.1140/epjc/s10052-017-4889-3 |
| 文献子类 | Article |
| 英文摘要 | Within the factorization-assisted topological-amplitude approach, we studied the 33 charmless B-(s) -> VV decays, where V stands for a light vector meson. According to the flavor flows, the amplitude of each process can be decomposed into eight different topologies. In contrast to the conventional flavor diagrammatic approach, we further factorize each topological amplitude into decay constant, form factors and unknown universal parameters. By chi(2) fitting 46 experimental observables, we extracted 10 theoretical parameters with chi(2) per degree of freedom around 2. Using the fitted parameters, we calculated the branching fractions, polarization fractions, CP asymmetries and relative phases between polarization amplitudes of each decay mode. The decay channels dominated by tree diagram have large branching fractions and large longitudinal polarization fraction. The branching fractions and longitudinal polarization fractions of color-suppressed decays become smaller. Current experimental data of large transverse polarization fractions in the penguin dominant decay channels can be explained by only one transverse amplitude of penguin annihilation diagram. Our predictions of the not yet measured channels can be tested in the ongoing LHCb experiment and the Belle-II experiment in the future. |
| 电子版国际标准刊号 | 1434-6052 |
| WOS关键词 | COLLINEAR EFFECTIVE THEORY ; B-MESONS ; QCD FACTORIZATION ; QUARK ; POLARIZATION |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000411292800001 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/284440]  |
| 专题 | 高能物理研究所_理论物理室 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Li, Y,Wang, C,Zhang, QA,et al. Charmless B-(s) -> VV decays in factorization-assisted topological-amplitude approach[J]. EUROPEAN PHYSICAL JOURNAL C,2017,77(5):333. |
| APA | Li, Y.,Wang, C.,Zhang, QA.,Lu, CD.,王超.,...&吕才典.(2017).Charmless B-(s) -> VV decays in factorization-assisted topological-amplitude approach.EUROPEAN PHYSICAL JOURNAL C,77(5),333. |
| MLA | Li, Y,et al."Charmless B-(s) -> VV decays in factorization-assisted topological-amplitude approach".EUROPEAN PHYSICAL JOURNAL C 77.5(2017):333. |
入库方式： OAI收割
来源：高能物理研究所
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