D-s-meson leading-twist distribution amplitude within the QCD sum rules and its application to the B-s -> D-s transition form factor

doi:10.1103/PhysRevD.103.114024

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	D-s-meson leading-twist distribution amplitude within the QCD sum rules and its application to the B-s -> D-s transition form factor
	Zhang, Yi ; Zhong, Tao ; Fu, Hai-Bing ; Cheng, Wei 2; Wu, Xing-Gang
刊名	PHYSICAL REVIEW D
	2021
卷号	103 期号:11 页码:114024
关键词	DISPERSIVE BOUNDS DECAY
ISSN号	2470-0010
DOI	10.1103/PhysRevD.103.114024
英文摘要	We make a detailed study of the D-s-meson leading-twist light-cone distribution amplitude phi(2;Ds) by using the QCD sum rules within the framework of the background field theory. To improve the precision, its moments (2;Ds) are calculated up to dimension-six condensates. At the scale mu = 2 GeV, we obtain (2;Ds) = -0.261(-0.020)(+0.020), (2; Ds) = 0.184(-0.012)(+0.012), (2; Ds) = -0.111(-0.012)(+0.007), and (2; Ds) = 0.075(-0.005)(+0.005). Using those moments, the phi(2;Ds) is then constructed by using the light-cone harmonic oscillator model. As an application, we calculate the transition form factor f(+)(Bs -> Ds) (q(2)) within the light-cone sum rules (LCSR) approach by using a right-handed chiral current, in which the terms involving phi(2;Ds) dominate the LCSR. It is noted that the extrapolated f(Bs -> Ds) (q(2)) agrees with the lattice QCD prediction. After extrapolating the transition form factor to the physically allowable q(2) region, we calculate the branching ratio and the CKM matrix element, which give B((K) over bar (0)(s) -> D-s(+) l nu(e)) = (2.03(-0.49)(+0.35)) x 10(-2) and vertical bar V-cb vertical bar = (40.00(-4.08)(+4.93)) x 10(-3).
学科主题	Astronomy & Astrophysics ; Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/27310]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Chongqing Univ, Dept Phys, Chongqing 401331, Peoples R China 2.Guizhou Minzu Univ, Dept Phys, Guiyang 550025, Peoples R China 3.Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China 4.Chongqing Key Lab Strongly Coupled Phys, Chongqing 401331, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yi,Zhong, Tao,Fu, Hai-Bing,et al. D-s-meson leading-twist distribution amplitude within the QCD sum rules and its application to the B-s -> D-s transition form factor[J]. PHYSICAL REVIEW D,2021,103(11):114024.
APA	Zhang, Yi,Zhong, Tao,Fu, Hai-Bing,Cheng, Wei,&Wu, Xing-Gang.(2021).D-s-meson leading-twist distribution amplitude within the QCD sum rules and its application to the B-s -> D-s transition form factor.PHYSICAL REVIEW D,103(11),114024.
MLA	Zhang, Yi,et al."D-s-meson leading-twist distribution amplitude within the QCD sum rules and its application to the B-s -> D-s transition form factor".PHYSICAL REVIEW D 103.11(2021):114024.