K-p scattering and hyperon excitations in a chiral quark model
文献类型：期刊论文
| 作者 | ZHONG Xian-Hui; Zhao Q(赵强)
|
| 刊名 | 中国物理C（英文版）
 |
| 出版日期 | 2010 |
| 期号 | 11页码:1428-1432 |
| 关键词 | strange resonance quark model meson-baryon interaction |
| 英文摘要 | A chiral quark-model approach is employed to study the(K)N scattering at low energies.The processes of K-p→∑0π0,Λπ0 and-K0n at PK(<～)800 MeV/c(I.e.the center mass energy W(<～)1.7 GeV) are investigated.The analysis shows that theΛ(1405)S01 dominates the processes K-p→∑0π0,-K0n in the energy region considered here.Around PK(<～)400 MeV/c,the Λ(1520)D03 is responsible for a strong resonant peak in the cross section of K-p→∑0π0 and-(K)0n.To reproduce the data,an unexpectedly large coupling for Λ(1520)D03 to KN is needed.In contrast,the coupling forΛ(1670)S01 to KN appears to be weak,which could be due to configuration mixings betweenΛ(1405)S01 andΛ(1670)S01.By analyzing K-p →Λπ0,evidences for two low mass S-wave states,∑(1480)S11 and ∑(1560)S11,seem to be available.With these two states,the reaction K-p→(K)0n can also be described well.However,it is difficult to understand the low masses of ∑(1480)S11 and ∑(1560)S11.The s-channel amplitudes for K-p→Λπ0 are also larger than the naive quark model expectations.The non-resonant background contributions,I.e.t-channel and/or u-channel,also play important roles in the explanation of the angular distributions due to amplitude interferences. |
| 收录类别 | CNKI |
| 公开日期 | 2016-02-25 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/215918]  |
| 专题 | 高能物理研究所_理论物理室 |
| 推荐引用方式 GB/T 7714 | ZHONG Xian-Hui,Zhao Q. K-p scattering and hyperon excitations in a chiral quark model[J]. 中国物理C（英文版）,2010(11):1428-1432. |
| APA | ZHONG Xian-Hui,&赵强.(2010).K-p scattering and hyperon excitations in a chiral quark model.中国物理C（英文版）(11),1428-1432. |
| MLA | ZHONG Xian-Hui,et al."K-p scattering and hyperon excitations in a chiral quark model".中国物理C（英文版） .11(2010):1428-1432. |
入库方式： OAI收割
来源：高能物理研究所
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