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B -> K transition form factor up to O(1/m(b)(2)) within the kappa(T) factorization approach
Wu, XG; 黄涛(理); Huang, T; Fang, ZY
2007
发表期刊EUROPEAN PHYSICAL JOURNAL C
卷号52期号:3页码:561-570
通讯作者Chongqing Univ, Dept Phys, Chongqing 400044, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
文章类型Article
摘要We apply the k(T) factorization approach to deal with the B-->K transition form factor F-+,0(B-->K) (q(2)) in the large recoil regions. The B-meson wave functions Psi(B) and Psi(B) that include the 3-particle Fock states' contributions are adopted to give a consistent PQCD analysis of the form factor up to O(1/m(b)(2)). It has been found that the two wave functions Psi(B) and Psi(B) can give sizable contributions to the form factor and should be kept for a better understanding of the B-meson decays. Next the contributions from different twist structures of the kaon wave function are discussed, including SUf(3)-breaking effects. A sizable contribution from the twist-3 wave function Psi(p) is found, whose model dependence is discussed by taking two groups of parameters that are determined by different distribution amplitude moments obtained in the literature. It is also shown that F-+,0(B-->K) (0) = 0.30 +/- 0.04 and [F-+,0(B-->K) (0)/F-+,0(B-->pi) (0)] = 1.13 +/- 0.02, which are more reasonable and consistent with the light-cone sum rule results in the large recoil regions.
学科领域Physics
研究领域[WOS]Physics ; Physics
DOI10.1140/epjc/s10052-007-0421-5
URL查看原文
语种英语
研究领域[WOS]Physics ; Physics
WOS类目Physics, Particles & Fields
WOS记录号WOS:000250632800006
引用统计
被引频次:13[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/237958
专题理论物理室
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
Wu, XG,Huang T,Huang, T,et al. B -> K transition form factor up to O(1/m(b)(2)) within the kappa(T) factorization approach[J]. EUROPEAN PHYSICAL JOURNAL C,2007,52(3):561-570.
APA Wu, XG,黄涛,Huang, T,&Fang, ZY.(2007).B -> K transition form factor up to O(1/m(b)(2)) within the kappa(T) factorization approach.EUROPEAN PHYSICAL JOURNAL C,52(3),561-570.
MLA Wu, XG,et al."B -> K transition form factor up to O(1/m(b)(2)) within the kappa(T) factorization approach".EUROPEAN PHYSICAL JOURNAL C 52.3(2007):561-570.
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