Charmless two-body B((s))-> VP decays in soft collinear effective theory

	Charmless two-body B((s))-> VP decays in soft collinear effective theory
	Wang W(王伟); Wang YM(王玉明); Lv CD(吕才典); Wang, W; Wang, YM; Yang, DS; Lu, CD
刊名	PHYSICAL REVIEW D
	2008
卷号	78 期号:3 页码:34011
通讯作者	[Wang, Wei ; Wang, Yu-Ming ; Lue, Cai-Dian] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China ; [Wang, Wei ; Wang, Yu-Ming ; Yang, De-Shan] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
英文摘要	We provide the analysis of charmless two-body B -> VP decays under the framework of the soft collinear effective theory (SCET), where V(P) denotes a light vector (pseudoscalar) meson. Besides the leading power contributions, some power corrections (chiraly enhanced penguins) are also taken into account. Using the current available B -> PP and B -> VP experimental data on branching fractions and CP asymmetry variables, we find two kinds of solutions in chi(2) fit for the 16 nonperturbative inputs which are essential in the 87 B -> PP and B -> VP decay channels. Chiraly enhanced penguins can change several charming penguins sizably, since they share the same topology. However, most of the other nonperturbative inputs and predictions on branching ratios and CP asymmetries are not changed too much. With the two sets of inputs, we predict the branching fractions and CP asymmetries of other modes especially B(s)-> VP decays. The agreements and differences with results in QCD factorization and perturbative QCD approach are analyzed. We also study the time-dependent CP asymmetries in channels with CP eigenstates in the final states and some other channels such as (B) over bar (0)/B(0)->pi(+/-)rho(-/+) and (B) over bar (0)(s)/B(s)(0)-> K(+/-) K*(-/+). In the perturbative QCD approach, the (S-P)(S+P) penguins in annihilation diagrams play an important role. Although they have the same topology with charming penguins in SCET, there are many differences between the two objects in weak phases, magnitudes, strong phases, and factorization properties.
学科主题	Astronomy & Astrophysics; Physics
类目[WOS]	Astronomy & Astrophysics ; Physics, Particles & Fields
研究领域[WOS]	Astronomy & Astrophysics ; Physics
原文出处	SCI
语种	英语
WOS记录号	WOS:000258975300045
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/240545]
专题	高能物理研究所_理论物理室高能物理研究所_实验物理中心高能物理研究所_计算中心
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 W,Wang YM,Lv CD,et al. Charmless two-body B((s))-> VP decays in soft collinear effective theory[J]. PHYSICAL REVIEW D,2008,78(3):34011.
APA	王伟.,王玉明.,吕才典.,Wang, W.,Wang, YM.,...&Lu, CD.(2008).Charmless two-body B((s))-> VP decays in soft collinear effective theory.PHYSICAL REVIEW D,78(3),34011.
MLA	王伟,et al."Charmless two-body B((s))-> VP decays in soft collinear effective theory".PHYSICAL REVIEW D 78.3(2008):34011.