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B-s -> K form factor in the whole kinematically accessible range
Li ZH(李作宏); Wu XY(吴向尧); 黄涛(理); Li, ZH; Liang, FY; Wu, XY; Huang, T
Source PublicationPHYSICAL REVIEW D
Corresponding AuthorYantai Univ, Dept Phys, Yantai 264005, Peoples R China ; CCAST, World Lab, Beijing 100080, Peoples R China ; Inst High Energy Phys, Beijing 100039, Peoples R China ; Beijing Univ, Dept Phys, Beijing 100871, Peoples R China
AbstractA systematic analysis is presented of the B-s-->K form factor f (q(2)) in the whole range of momentum transfer q(2), which would be useful in analyzing the future data on B-s-->K decays and extracting \V-ub\. With a modified QCD light cone sum rule (LCSR) approach, in which the contributions cancel out from the twist 3 wave functions of the K meson, we investigate in detail the behavior of f(q(2)) at small and intermediate q(2) and the nonperturbative quantity f(B*)g(B*BsK) (f(B*) is the decay constant of B* meson and g(B*BsK) the B*BsK strong coupling), whose numerical result is used to the study q(2) dependence of f(q(2)) at large q(2) in the single pole approximation. Based on these findings, a form factor model from the best fit is formulated, which applies to the calculation on f(q(2)) in the whole kinematically accessible range. Also, a comparison is made with the standard LCSR predictions.
Subject AreaAstronomy & Astrophysics; Physics
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Particles & Fields
WOS IDWOS:000170726200062
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Document Type期刊论文
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Li ZH,Wu XY,Huang T,et al. B-s -> K form factor in the whole kinematically accessible range[J]. PHYSICAL REVIEW D,2001,64(5):57901.
APA 李作宏.,吴向尧.,黄涛.,Li, ZH.,Liang, FY.,...&Huang, T.(2001).B-s -> K form factor in the whole kinematically accessible range.PHYSICAL REVIEW D,64(5),57901.
MLA 李作宏,et al."B-s -> K form factor in the whole kinematically accessible range".PHYSICAL REVIEW D 64.5(2001):57901.
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