Electromagnetic form factors of Σ+ and Σ? in the vector-meson dominance model

doi:10.1088/1572-9494/abea0f

	Electromagnetic form factors of Σ+ and Σ? in the vector-meson dominance model
	Li,Zhong-Yi 1,2; Xie,Ju-Jun 1,2,3
刊名	Communications in Theoretical Physics
	2021-03-25
卷号	73 期号: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()
英文摘要	Abstract Based on the recent measurements of the e + e ? → Σ + Σ ˉ ? and e + e ? → Σ ? Σ ˉ + processes by the Beijing Spectrometer III (BESIII) collaboration, the electromagnetic form factors of the hyperon Σ+ and Σ? in the timelike region are investigated using the vector-meson dominance model, where the contributions of the ρ, ω, and ? mesons are taken into account. The model parameters are determined from the BESIII experimental data of the timelike effective form factors ∣Geff∣ of the Σ+ and Σ? 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 Σ+ and Σ?. The electromagnetic form factors obtained for the Σ+ and Σ? baryons are comparable with those of other model calculations.
语种	英语
出版者	IOP Publishing
WOS记录号	IOP:0253-6102-73-5-ABEA0F
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/137966]
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.Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China 2.School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 101408, China 3.School of Physics and Microelectronics, Zhengzhou University, Zhengzhou, Henan 450001, China
推荐引用方式 GB/T 7714	Li,Zhong-Yi,Xie,Ju-Jun. Electromagnetic form factors of Σ+ and Σ? in the vector-meson dominance model[J]. Communications in Theoretical Physics,2021,73(5).
APA	Li,Zhong-Yi,&Xie,Ju-Jun.(2021).Electromagnetic form factors of Σ+ and Σ? in the vector-meson dominance model.Communications in Theoretical Physics,73(5).
MLA	Li,Zhong-Yi,et al."Electromagnetic form factors of Σ+ and Σ? in the vector-meson dominance model".Communications in Theoretical Physics 73.5(2021).