Revisiting the production of J /psi + eta(c) via the e(+) e(-) annihilation within the QCD light-cone sum rules

doi:10.1103/PhysRevD.103.056012

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	Revisiting the production of J /psi + eta(c) via the e(+) e(-) annihilation within the QCD light-cone sum rules
	Zeng, Long ; Fu, Hai-Bing ; Hu, Dan-Dan ; Chen, Ling-Li ; Cheng, Wei 1,2; Wu, Xing-Gang
刊名	PHYSICAL REVIEW D
	2021
卷号	103 期号:5 页码:56012
关键词	QCD SUM-RULES DECAY J/PSI
ISSN号	2470-0010
DOI	10.1103/PhysRevD.103.056012
英文摘要	We 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.
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/311006/27467]
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.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
推荐引用方式 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.