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K(-)p scattering and hyperon excitations in a chiral quark model
Zhong, XH; Zhao Q(赵强); Zhao, QA
2010
发表期刊CHINESE PHYSICS C
卷号34期号:9页码:1428-1432
通讯作者[Zhong Xian-Hui] Hunan Normal Univ, Dept Phys, Changsha 410081, Hunan, Peoples R China ; [Zhao Qiang] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China ; [Zhong Xian-Hui ; Zhao Qiang] Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China
文章类型Article; Proceedings Paper
摘要A chiral quark-model approach is employed to study the RN scattering at low energies The processes of K(-)p -> Sigma(0)pi(0), Lambda pi(0) and (K) over bar (0)n at P-K less than or similar to 800 MeV/c e the center mass energy W less than or similar to 1 7 GeV) are investigated The analysis shows that the Lambda(1405)S-01 dominates the processes K(-)p -> Sigma(0)pi(0), (K) over bar (0)n in the energy region considered here Around P-K less than or similar to 400 MeV/c, the Lambda(1520)D-03 is responsible for a strong resonant peak in the cross section of K(-)p -> Sigma(0)pi(0) and (K) over bar (0)n To reproduce the data, an unexpectedly large coupling for Lambda(1520)D-03 to KN is needed In contrast, the coupling for Lambda(1670)S-01 to KN appears to be weak, which could be due to configuration mixings between Lambda(1405)S-01, and Lambda(1670)S-01 By analyzing K(-)p -> Lambda pi(0), evidences for two low mass S-wave states, Lambda(1480)S-01 and Lambda(1560)S-01, seem to be available. With these two states, the reaction K(-)p -> (K) over bar (0)n can also be described well However, it is difficult to understand the low masses of Sigma(1480)S-11 and Sigma(1560)S-11 The s-channel amplitudes for K-p An 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
关键词strange resonance quark model meson-baryon interaction
学科领域Physics
研究领域[WOS]Physics ; Physics
URL查看原文
语种英语
研究领域[WOS]Physics ; Physics
WOS类目Physics, Nuclear ; Physics, Particles & Fields
WOS记录号WOS:000281540100063
引用统计
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/239351
专题理论物理室
作者单位中国科学院高能物理研究所
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GB/T 7714
Zhong, XH,Zhao Q,Zhao, QA. K(-)p scattering and hyperon excitations in a chiral quark model[J]. CHINESE PHYSICS C,2010,34(9):1428-1432.
APA Zhong, XH,赵强,&Zhao, QA.(2010).K(-)p scattering and hyperon excitations in a chiral quark model.CHINESE PHYSICS C,34(9),1428-1432.
MLA Zhong, XH,et al."K(-)p scattering and hyperon excitations in a chiral quark model".CHINESE PHYSICS C 34.9(2010):1428-1432.
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