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Zeng, Long; Fu, Hai-Bing; Hu, Dan-Dan; Chen, Ling-Li; Cheng, Wei1,2; Wu, Xing-Gang
Revisiting the production of J /psi + eta(c) via the e(+) e(-) annihilation within the QCD light-cone sum rules
Source PublicationPHYSICAL REVIEW D
Language英语
KeywordQCD SUM-RULES DECAY J/PSI
AbstractWe make a detailed study on the typical production channel of double charmoniums, e(+)e(-) -> J / psi + eta(c), at the center-of-mass collision energy root s = 10.58 GeV. The key component of the process is the form factor F (VP)(q(2)), which has been calculated within the QCD light-cone sum rules (LCSR). To improve the accuracy of the derived LCSR, we keep the J / psi light-cone distribution amplitude up to twist-4 accuracy. Total cross sections for e(+)e(-) -> J / psi + eta(c) at three typical factorization scales are sigma vertical bar(mu s) = 22.53(-3.49)(+3.46) fb, sigma vertical bar(mu k) = 21.98(-3.38)(+3.35)( )fb, and sigma vertical bar(mu 0) = 21.74(-3.33)(+3.29) fb, respectively. The factorization scale dependence is small, and those predictions are consistent with the BABAR and Belle measurements within errors.
2021
ISSN2470-0010
Volume103Issue:5Pages:56012
Cooperation Status国内
Subject AreaAstronomy & Astrophysics ; Physics
MOST Discipline CatalogueAstronomy & Astrophysics ; Physics, Particles & Fields
DOI10.1103/PhysRevD.103.056012
Indexed BySCIE
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/27467
CollectionSCI期刊论文
Affiliation1.Guizhou Minzu Univ, Dept Phys, Guiyang 550025, Peoples R China
2.Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China
3.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China
4.Chongqing Univ, Dept Phys, Chongqing 401331, Peoples R China
Recommended Citation
GB/T 7714
Zeng, Long,Fu, Hai-Bing,Hu, Dan-Dan,et al. Revisiting the production of J /psi + eta(c) via the e(+) e(-) annihilation within the QCD light-cone sum rules[J]. PHYSICAL REVIEW D,2021,103(5):56012.
APA Zeng, Long,Fu, Hai-Bing,Hu, Dan-Dan,Chen, Ling-Li,Cheng, Wei,&Wu, Xing-Gang.(2021).Revisiting the production of J /psi + eta(c) via the e(+) e(-) annihilation within the QCD light-cone sum rules.PHYSICAL REVIEW D,103(5),56012.
MLA Zeng, Long,et al."Revisiting the production of J /psi + eta(c) via the e(+) e(-) annihilation within the QCD light-cone sum rules".PHYSICAL REVIEW D 103.5(2021):56012.
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