【摘 要】
：
The study of nucleon resonance is an interesting area in hadron physics.As of now,the nucleon resonances around 2.1GeV are still in confusion.The CQM predicted
【出 处】
：
IMP & HIRFL Annual Report
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The study of nucleon resonance is an interesting area in hadron physics.As of now,the nucleon resonances around 2.1GeV are still in confusion.The CQM predicted about two dozens of the nucleon resonances in this region,most of which are in n=3shell.Only a few of them have been observed as shown in PDG with large uncertainties[1].Hence,more efforts should be paid to figure out the nucleon resonances around 2.1GeV.Due to the high threshold ofΛ(1520)production,about 2GeV,it is appropriate to enrich our knowledge of nucleon resonances,especially ones with mass larger than 2GeV.In recent years,excited by the claimed finding of the pentaquarkΘwith a mass of about 1.540GeV,many experiments,
The study of nucleon resonance is an interesting area in hadron physics. As of now, the nucleon resonances around 2.1 GeV are still in confusion. The CQM predicted about two dozens of the nucleon resonances in this region, most of which are in n = 3shell .Only a few of them have been observed as shown in PDG with large uncertainties [1] .ence, more efforts should be paid to figure out the nucleon resonances around 2.1GeV.Due to the high threshold ofΛ (1520) production, about 2GeV , it is appropriate to enrich our knowledge of nucleon resonances, especially ones with mass larger than 2GeV. recent years, excited by the claimed finding of the pentaquark Θ with a mass of about 1.540GeV, many experiments,
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