Effects of Delta(1905)5/2(+) on K*Sigma photoproduction

doi:10.1103/PhysRevC.98.045209

	*Effects of Delta(1905)5/2(+) on KSigma photoproduction**
	Wang, Wen-Ling; Huang, Fei; Wang, Ai-Chao; Huang F(黄飞)
刊名	PHYSICAL REVIEW C
	2018
卷号	98 期号:4 页码:45209
ISSN号	2469-9985
DOI	10.1103/PhysRevC.98.045209
文献子类	Article
英文摘要	The two-channel photoproductions of gamma p -> K(+)Sigma(0) and gamma p -> K(0)Sigma(+) are investigated based on an effective Lagrangian approach at the tree-level Born approximation. In addition to the t-channel K, kappa, K* exchanges, the s-channel nucleon (N) and Delta exchanges, the u-channel Lambda, Sigma, Sigma* exchanges, and the generalized contact term, we try to take into account the minimum number of baryon resonances in constructing the reaction amplitudes to describe the experimental data. It is found that by including the Delta(1905)5/2(+) resonance with its mass, width, and helicity amplitudes taken from the Review of Particle Physics [Particle Data Group, C. Patrignani et al., Chin. Phys. C 40, 100001 (2016)], the calculated differential and total cross sections for these two reactions are in good agreement with the experimental data. An analysis of the reaction mechanisms shows that the cross sections of gamma p -> K(+)Sigma(0) are dominated by the s-channel Delta(1905)5/2(+) exchange at low energies and t-channel K exchange at high energies, with the s-channel A exchange providing significant contributions in the near threshold region. For gamma p -> K(0)Sigma(+), the angular dependences are dominated by the t-channel K exchange at forward angles and the u-channel Sigma exchange at backward angles, with the s-channel Delta and Delta(1905)5/2(+) exchanges making considerable contributions at low energies. Predictions are given for the beam, target, and recoil asymmetries for both reactions.
电子版国际标准刊号	2469-9993
WOS关键词	MODEL ; OCTET
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:000448166500006
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/286806]
专题	高能物理研究所_理论物理室
通讯作者	Huang F(黄飞)
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Wang, Wen-Ling,Huang, Fei,Wang, Ai-Chao,et al. Effects of Delta(1905)5/2(+) on K*Sigma photoproduction[J]. PHYSICAL REVIEW C,2018,98(4):45209.
APA	Wang, Wen-Ling,Huang, Fei,Wang, Ai-Chao,&黄飞.(2018).Effects of Delta(1905)5/2(+) on K*Sigma photoproduction.PHYSICAL REVIEW C,98(4),45209.
MLA	Wang, Wen-Ling,et al."Effects of Delta(1905)5/2(+) on K*Sigma photoproduction".PHYSICAL REVIEW C 98.4(2018):45209.