Electromagnetic properties of S-11 states in a light cone quark model
He J(何军); Dong YB(董宇兵); He, J; Dong, YB
刊名COMMUNICATIONS IN THEORETICAL PHYSICS
2006
卷号46期号:2页码:#REF!
关键词electromagntic properties S-11 states light cone quark model
学科分类Physics
通讯作者He, J (reprint author), Chinese Acad Sci, Inst High Energy Phys, POB 918-4, Beijing 100049, Peoples R China.
文章类型Article
英文摘要Using relativistic spin-flavor wave functions of a L'orentz-covariant light cone quark model, we calculate the electromagnetic form factors of two S-11 resonances, N(1535) and N(1650), and the helicity amplitudes A(1/2), and S-1/2 for electroexcitation of the S-11 resonances from the nucleon. The electromagnetic form factors of these S-11 resonances are found to be similar to those of the nucleon in shape, while the charge form factor of neutral N(1650) is nearly zero. The relative peak height of the S-11 charge form factors is controlled by the mixing angle common to both resonance wave functions. As in most quark models, there is a systematic overestimate of A(1/2)p in both N(1535) and N(1650) cases at the photon point. A sizeable S-1/2 for all cases is produced as suggested by experiments.
类目[WOS]Physics, Multidisciplinary
收录类别SCI
WOS记录号WOS:000240123000018
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/227303
专题中国科学院高能物理研究所_理论物理室_期刊论文
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GB/T 7714
He J,Dong YB,He, J,et al. Electromagnetic properties of S-11 states in a light cone quark model[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2006,46(2):#REF!.
APA 何军,董宇兵,He, J,&Dong, YB.(2006).Electromagnetic properties of S-11 states in a light cone quark model.COMMUNICATIONS IN THEORETICAL PHYSICS,46(2),#REF!.
MLA 何军,et al."Electromagnetic properties of S-11 states in a light cone quark model".COMMUNICATIONS IN THEORETICAL PHYSICS 46.2(2006):#REF!.
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