| 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
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| 2006
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| 发表期刊 | COMMUNICATIONS IN THEORETICAL PHYSICS
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| 卷号 | 46期号:2页码:#REF! |
| 通讯作者 | He, J (reprint author), Chinese Acad Sci, Inst High Energy Phys, POB 918-4, Beijing 100049, Peoples R China.
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| 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. |
| 文章类型 | Article
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| 关键词 | electromagntic properties
S-11 states
light cone quark model
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| 学科领域 | Physics
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| 收录类别 | SCI
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| WOS类目 | Physics, Multidisciplinary
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| WOS记录号 | WOS:000240123000018
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.ihep.ac.cn/handle/311005/227303
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| 专题 | 理论物理室
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推荐引用方式
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!.
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| 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!.
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| 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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