Electromagnetic form factors of Sigma(+) and Sigma(-) in the vector-meson dominance model

doi:10.1088/1572-9494/abea0f

	Electromagnetic form factors of Sigma(+) and Sigma(-) in the vector-meson dominance model
	Li, Zhong-Yi 1,2; Xie, Ju-Jun 1,2,3
刊名	COMMUNICATIONS IN THEORETICAL PHYSICS
	2021-05-01
卷号	73 期号:5 页码:5
关键词	Electromagnetic form factors Vector-meson dominance Hyperon-antihyperon pair production
ISSN号	0253-6102
DOI	10.1088/1572-9494/abea0f
通讯作者	Xie, Ju-Jun(xiejujun@impcas.ac.cn)
英文摘要	Based on the recent measurements of the e(+) e(-) -> Sigma(+)Sigma(-)and e(+) e(-) -> Sigma(-)Sigma(+)processes by the Beijing Spectrometer III (BESIII) collaboration, the electromagnetic form factors of the hyperon Sigma(+) and Sigma(-) in the timelike region are investigated using the vector-meson dominance model, where the contributions of the rho, omega, and phi mesons are taken into account. The model parameters are determined from the BESIII experimental data of the timelike effective form factors vertical bar G(eff)vertical bar of the Sigma(+) and Sigma(-) baryons for center-of-mass energies from 2.3864 to 3.02 GeV. It is found that we can provide quantitative descriptions of the available data using as few as one adjustable model parameter. We then progress to an analysis of the electromagnetic form factors in the spacelike region and evaluate the spacelike form factors of the hyperons Sigma(+) and Sigma(-) . The electromagnetic form factors obtained for the Sigma(+) and Sigma(-) baryons are comparable with those of other model calculations.
资助项目	National Natural Science Foundation of China[12 075 288] ; National Natural Science Foundation of China[11 735 003] ; National Natural Science Foundation of China[11 961 141 012]
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000632861200001
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/137739]
专题	中国科学院近代物理研究所
通讯作者	Xie, Ju-Jun
作者单位	1.Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 101408, Peoples R China 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 3.Zhengzhou Univ, Sch Phys & Microelect, Zhengzhou 450001, Henan, Peoples R China
推荐引用方式 GB/T 7714	Li, Zhong-Yi,Xie, Ju-Jun. Electromagnetic form factors of Sigma(+) and Sigma(-) in the vector-meson dominance model[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2021,73(5):5.
APA	Li, Zhong-Yi,&Xie, Ju-Jun.(2021).Electromagnetic form factors of Sigma(+) and Sigma(-) in the vector-meson dominance model.COMMUNICATIONS IN THEORETICAL PHYSICS,73(5),5.
MLA	Li, Zhong-Yi,et al."Electromagnetic form factors of Sigma(+) and Sigma(-) in the vector-meson dominance model".COMMUNICATIONS IN THEORETICAL PHYSICS 73.5(2021):5.