Transition form factors of B decays into p-wave axial-vector mesons in the perturbative QCD approach

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	Transition form factors of B decays into p-wave axial-vector mesons in the perturbative QCD approach
	Li, Run-Hui; Lue, Cai-Dian; Wang, Wei; Li, RH , Inst High Energy Phys, POB 918 4, Beijing 100049, Peoples R China
刊名	PHYSICAL REVIEW D
	2009
卷号	79 期号:3 页码:-
关键词	Distribution Amplitudes Semileptonic b Quark-model
ISSN号	1550-7998
英文摘要	The B(u,d,s) -> V, A form factors are studied in the perturbative QCD approach (V, A denote a vector meson and two kinds of p-wave axial-vector mesons: (3)P(1) and (1)P(1) states, respectively). The form factors are directly studied in the large recoiling region and extrapolated to the whole kinematic region within the dipole parametrization. Adopting decay constants with different signs for the two kinds of axial vectors, we find that the two kinds of B -> A form factors have the same sign. The two strange mesons K(1A) and K(1B) mix with each other via the SU(3) symmetry breaking effect. In order to reduce the ambiguities in the mixing angle between K(1A) and K(1B), we propose a model-independent way that utilizes the B decay data. Most of the branching fractions of the semilteptonic B -> Al (nu) over bar (l) decays are of the order 10(-4), which still need experimental tests in the ongoing and forthcoming experiments.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000263816600038
公开日期	2012-08-02
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/5393]
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	Li, RH , Inst High Energy Phys, POB 918 4, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Li, Run-Hui,Lue, Cai-Dian,Wang, Wei,et al. Transition form factors of B decays into p-wave axial-vector mesons in the perturbative QCD approach[J]. PHYSICAL REVIEW D,2009,79(3):-.
APA	Li, Run-Hui,Lue, Cai-Dian,Wang, Wei,&Li, RH , Inst High Energy Phys, POB 918 4, Beijing 100049, Peoples R China.(2009).Transition form factors of B decays into p-wave axial-vector mesons in the perturbative QCD approach.PHYSICAL REVIEW D,79(3),-.
MLA	Li, Run-Hui,et al."Transition form factors of B decays into p-wave axial-vector mesons in the perturbative QCD approach".PHYSICAL REVIEW D 79.3(2009):-.