SU(f)(3)-symmetry breaking effects of the B -> K transition form factor in the QCD light-cone sum rules

	SU(f)(3)-symmetry breaking effects of the B -> K transition form factor in the QCD light-cone sum rules
	Wu, XG; Huang, T; Fang, ZY; Lv CD(吕才典)
刊名	PHYSICAL REVIEW D
	2008
卷号	77 期号:7 页码:74001
通讯作者	[Wu, Xing-Gang ; Fang, Zhen-Yun] Chongqing Univ, Dept Phys, Chongqing 400044, Peoples R China ; [Huang, Tao] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
英文摘要	We present an improved calculation of the B -> K transition form factor with a chiral current in the QCD light-cone sum rule approach. Under the present approach, the most uncertain twist-3 contribution is eliminated. And the contributions from the twist-2 and the twist-4 structures of the kaon wave function are discussed, including the SU(f)(3)-breaking effects. One-loop radiative corrections to the kaonic twist-2 contribution together with the leading-order twist-4 corrections are studied. The SU(f)(3)-breaking effect is obtained, F(+)(B -> K)(0)/F(+)(B ->pi)(0)=1.16 +/- 0.03. By combining the light-cone sum rule results with the newly obtained perturbative QCD results that have been calculated up to O(1/m(b)(2)) by Wu, Huang, and Fang [Eur. Phys. J. C 52, 561 (2007)], we present a consistent analysis of the B -> K transition form factor in the large and intermediate energy regions.
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:000255457800018
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/240767]
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	Wu, XG,Huang, T,Fang, ZY,et al. SU(f)(3)-symmetry breaking effects of the B -> K transition form factor in the QCD light-cone sum rules[J]. PHYSICAL REVIEW D,2008,77(7):74001.
APA	Wu, XG,Huang, T,Fang, ZY,&吕才典.(2008).SU(f)(3)-symmetry breaking effects of the B -> K transition form factor in the QCD light-cone sum rules.PHYSICAL REVIEW D,77(7),74001.
MLA	Wu, XG,et al."SU(f)(3)-symmetry breaking effects of the B -> K transition form factor in the QCD light-cone sum rules".PHYSICAL REVIEW D 77.7(2008):74001.