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题名: Transition form factors of B decays into p-wave axial-vector mesons in the perturbative QCD approach
作者: Li, Run-Hui ;  Lue, Cai-Dian ;  Wang, Wei
刊名: PHYSICAL REVIEW D
出版日期: 2009
卷号: 79, 期号:3, 页码:-
关键词: DISTRIBUTION AMPLITUDES ;  SEMILEPTONIC B ;  QUARK-MODEL
学科分类: Physics
通讯作者: Li, RH , Inst High Energy Phys, POB 918 4, Beijing 100049, Peoples R China
部门归属: [Li, RH; Lue, CD; Wang, W] Inst High Energy Phys, Beijing 100049, Peoples R China; [Li, RH] Shandong Univ, Sch Phys, Jinan 250100, Peoples R China; [Lue, CD] Chinese Acad Sci, Kavli Inst Theoret Phys, Beijing 100190, Peoples R China
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.
资助者: National Natural Science Foundation of China[10735080, 10625525, 10525523, 10805037]; Chinese Academy of Sciences[KJCX2. YW.W10]
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000263816600038
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5393
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Li, Run-Hui,Lue, Cai-Dian,Wang, Wei. Transition form factors of B decays into p-wave axial-vector mesons in the perturbative QCD approach[J]. PHYSICAL REVIEW D,2009,79(3):-.
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