Near-threshold photoproduction of J/psi in two-gluon exchange model

doi:10.1140/epjc/s10052-020-08584-6

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	Near-threshold photoproduction of J/psi in two-gluon exchange model
	Zeng, Fancong 2; Wang, Xiao-Yun 2,3; Zhang, Li 2,3; Xie, Ya-Ping 4,5; Wang, Rong 4,5; Chen, Xurong 1,4,5
刊名	EUROPEAN PHYSICAL JOURNAL C
	2020-11-06
卷号	80 期号:11
ISSN号	1434-6044
DOI	10.1140/epjc/s10052-020-08584-6
英文摘要	The near-threshold photoproduction of J/psi is regarded as one golden process to unveil the nucleon mass structure, pentaquark state involving the charm quarks, and the poorly constrained gluon distribution of the nucleon at large x (> 0.1). In this paper, we present an analysis of the current experimental data under a two-gluon exchange model, which shows a good consistency. Using a parameterized function form with three free parameters, we have determined the nucleonic gluon distribution at the J/psi mass scale. Moreover, we predict the differential cross-section of the electroproduction of J/psi as a function of the invariant mass of the final hadrons W, at EicC, as a practical application of the model and the obtained gluon distribution. According to our estimation, hundreds of J/psi events can be detected per year on EicC near the threshold. Therefore, the relevant experimental measurements are suggested to be carried out on EicC.
WOS研究方向	Physics
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000590065300001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/155055]
专题	理学院
作者单位	1.South China Normal Univ, Inst Quantum Matter, Guangdong Prov Key Lab Nucl Sci, Guangzhou 510006, Peoples R China 2.Lanzhou Univ Technol, Lanzhou 730050, Peoples R China; 3.Lanzhou Univ Technol, Dept Phys, Lanzhou 730050, Peoples R China; 4.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China; 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China;
推荐引用方式 GB/T 7714	Zeng, Fancong,Wang, Xiao-Yun,Zhang, Li,et al. Near-threshold photoproduction of J/psi in two-gluon exchange model[J]. EUROPEAN PHYSICAL JOURNAL C,2020,80(11).
APA	Zeng, Fancong,Wang, Xiao-Yun,Zhang, Li,Xie, Ya-Ping,Wang, Rong,&Chen, Xurong.(2020).Near-threshold photoproduction of J/psi in two-gluon exchange model.EUROPEAN PHYSICAL JOURNAL C,80(11).
MLA	Zeng, Fancong,et al."Near-threshold photoproduction of J/psi in two-gluon exchange model".EUROPEAN PHYSICAL JOURNAL C 80.11(2020).