Strangeness in the proton and N*(1535)
The newest progress on the study of the strangeness in the proton and in the lowest negative parity nucleon excited state N*(1535) is reviewed. Implications on the internal quark structure of the proton, N*(1535) and other baryons are discussed.The diquark cluster picture for the 5-quark components in baryons gives a natural explanation not only to the empirical indications for a positive strangeness magnetic moment μs and positive strangeness radius of the proton but also the longstanding mass-reverse problem of N*(1535), N*(1440) and A*(1405) resonances as well as the unusual decay pattern of the N*(1535) resonance. Evidence for possible existence of N*(1535),s 1/2- SU(3) nonet partners in this picture is pointed out, and suggestion is made to search for these 1/2- hyperon excited states under the well known ∑*(1385),A*(1520) and (E)*(1530) peaks in various reactions.
Bing Song Zou
Institute of High Energy Physics, CAS,P.O.Box 918(4), Beijing 100049, China
国际会议
The International Workshop on Strangeness Nuclear Phusics 2006(国际奇异性核物理研讨会)
湖南张家界
英文
28-37
2006-09-05（万方平台首次上网日期，不代表论文的发表时间）