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

ITP OpenIR > SCI期刊论文

	Zhang, Yi ; Zhong, Tao ; Fu, Hai-Bing ; Cheng, Wei 2; Wu, Xing-Gang
	D-s-meson leading-twist distribution amplitude within the QCD sum rules and its application to the B-s -> D-s transition form factor
Source Publication	PHYSICAL REVIEW D
Language	英语
Keyword	DISPERSIVE BOUNDS DECAY
Abstract	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).
	2021
ISSN	2470-0010
Volume	103 Issue:11 Pages:114024
Cooperation Status	国内
Subject Area	Astronomy & Astrophysics ; Physics
MOST Discipline Catalogue	Astronomy & Astrophysics ; Physics, Particles & Fields
DOI	10.1103/PhysRevD.103.114024
Indexed By	SCIE
Citation statistics
Document Type	期刊论文
Identifier	http://ir.itp.ac.cn/handle/311006/27310
Collection	SCI期刊论文
Affiliation	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
Recommended Citation 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.

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