Dibaryon Signals in NN Scattering Data and Further Measurement at COSY,LEPS and CSR  

作　　者：C. W. Wong 

机构地区：[1]Department of Physics and Astronomy,University of California

出　　处：《原子核物理评论》2009年第S1期137-141,共5页Nuclear Physics Review

基　　金：National Natural Science Foundation of China(90503011,10375030,10435080,10775072)

摘　　要：The NΔ and ΔΔ dibaryon resonances are studied by calculating the NN scattering phase shifts with explicitly coupling these dibaryon channels in a multi-channel coupling calculation with two quark models. These quark models,the chiral quark model and quark delocalization color screening model,describe the NN S-,D-wave phase shifts below the π production threshold quantitatively well. Both quark models predict the 1D2 resonance discovered in NN partial wave phase shift analysis and the J=1 or 3 isoscalar resonance recently reported by CELSIUS-WASA Collaboration are NΔ5S2 and ΔΔ7S3 resonance,respectively. Further measurements at COSY,LEPS and Lanzhou Cooling Storage Ring(CSR) to check the ΔΔ resonance are discussed.The NΔ and ΔΔ dibaryon resonances are studied by calculating the NN scattering phase shifts with explicitly coupling these dibaryon channels in a multi-channel coupling calculation with two quark models. These quark models,the chiral quark model and quark delocalization color screening model,describe the NN S-,D-wave phase shifts below the π production threshold quantitatively well. Both quark models predict the 1D2 resonance discovered in NN partial wave phase shift analysis and the J=1 or 3 isoscalar resonance recently reported by CELSIUS-WASA Collaboration are NΔ5S2 and ΔΔ7S3 resonance,respectively. Further measurements at COSY,LEPS and Lanzhou Cooling Storage Ring(CSR) to check the ΔΔ resonance are discussed.

关 键 词：nucleon-nucleon scattering DIBARYON QUARK model 

分 类 号：O572.25[理学—粒子物理与原子核物理]