Global analysis of charmless B decays into two vector mesons in soft-collinear effective theory

doi:10.1103/PhysRevD.96.073004

	Global analysis of charmless B decays into two vector mesons in soft-collinear effective theory
	Wang, C; Wang C(王超); Zhou, SH; Lv CD(吕才典); Lu, CD; Li, Y
刊名	PHYSICAL REVIEW D
	2017
卷号	96 期号:7 页码:73004
ISSN号	2470-0010
DOI	10.1103/PhysRevD.96.073004
文献子类	Article
英文摘要	Under the framework of soft-collinear effective theory, we analyze the charmless B -> VV decays in a global way at leading power in 1/m(b) and leading order in alpha(s) with V denoting a light vector meson. In the flavor SU(3) symmetry, decay amplitudes for the 28 decay modes are expressed in terms of eight nonperturbative parameters. We fit these eight nonperturbative parameters with 35 experimental results. Annihilation contributions are neglected due to power suppression in the m(b)->infinity limit, so we include in the fit the nonperturbative charm penguins, which will play an important role in understanding the direct CP asymmetries. Charming penguins are also responsible for the large transverse polarizations of penguin-dominated and color-suppressed decays. With the best-fitted parameters, we calculate all possible physical observables of 28 decay modes, including branching fractions, direct CP asymmetries, and the complete set of polarization observables. Most of our results are compatible with the present experimental data when available, while others can be examined on the ongoing LHCb experiment and the forthcoming Belle II experiment. Moreover, the agreements and differences with results in QCD factorization and perturbative QCD approach are also discussed. A few observables are suggested to discriminate between these different approaches.
电子版国际标准刊号	2470-0029
WOS关键词	CHARMING PENGUINS ; QCD FACTORIZATION ; VV DECAYS ; POLARIZATION
WOS研究方向	Astronomy & Astrophysics ; Physics
语种	英语
WOS记录号	WOS:000412248200002
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/284650]
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	Wang, C,Wang C,Zhou, SH,et al. Global analysis of charmless B decays into two vector mesons in soft-collinear effective theory[J]. PHYSICAL REVIEW D,2017,96(7):73004.
APA	Wang, C,王超,Zhou, SH,吕才典,Lu, CD,&Li, Y.(2017).Global analysis of charmless B decays into two vector mesons in soft-collinear effective theory.PHYSICAL REVIEW D,96(7),73004.
MLA	Wang, C,et al."Global analysis of charmless B decays into two vector mesons in soft-collinear effective theory".PHYSICAL REVIEW D 96.7(2017):73004.