Study of nucleon resonances in a chiral quark model via eta productions

	Study of nucleon resonances in a chiral quark model via eta productions
	He Jun1 ; Saghai, B.2
	2009-12
关键词	N* chiral quark model photoproduction
卷号	33
期号	12
页码	1389-1392
英文摘要	In this report we investigate eta-meson productions oil the proton via electromagnetic and hadron probes in a chiral quark model approach. The observables, such as, differential cross section and beam asymmetry for the two productions are calculated and compared with the experiment. The five known resonances S(11)(1535) S(11)(1650); P(13)(1720) D(13)(1520), and F(15)(1680) are found to be dominant in the reaction mech-anisms in both channels. Significant, contribution from a new S(11) resonances are deduced. For the so-called "missing resonances", no evidence is found within the investigated reactions. The partial wave amplitudes for pi(-)p -> eta n are also presented.
会议录	CHINESE PHYSICS C
会议录出版者	CHINESE PHYSICAL SOC
会议录出版地	P O BOX 603, BEIJING 100080, PEOPLES R CHINA
语种	英语
WOS研究方向	Physics
WOS记录号	WOS:000272577200062
内容类型	会议论文
源URL	[http://119.78.100.186/handle/113462/57845]
专题	中国科学院近代物理研究所
通讯作者	He Jun
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.CEA, Inst Rech Fondamentales Univers, IRFU, F-91191 Gif Sur Yvette, France
推荐引用方式 GB/T 7714	He Jun,Saghai, B.. Study of nucleon resonances in a chiral quark model via eta productions[C]. 见:.