Dibaryon resonances and short-range NN interaction  

作　　者：V.I.Kukulin V.N.Pomerantsev O.A.Rubtsova M.N.Platonova I.T.Obukhovsky 

机构地区：[1]Skobeltsyn Institute of Nuclear Physics,Lomonosov Moscow State University,Leninskie Gory 1/2,119991 Moscow,Russia

出　　处：《Chinese Physics C》2022年第11期238-261,共24页中国物理C（英文版）

基　　金：partially supported by RFBR,grants Nos.19-02-00011 and 19-02-00014;support from the Foundation for the Advancement of Theoretical Physics and Mathematics“BASIS”。

摘　　要：The dibaryon concept for nuclear force is presented,assuming that the attraction between nucleons at medium distances is mainly due to the s-channel exchange of an intermediate six-quark(dibaryon)state.To construct the respective NN interaction model,a microscopic six-quark description of the NN system is used,in which symmetry aspects play a special role.It is shown that the NN interaction in all important partial waves can be described by the superposition of long-range t-channel one-pion exchange and s-channel exchange by an intermediate dibaryon.The model developed in this study provides a good description of both elastic phase shifts and inelasticities of NN scattering in all S,P,D,and F partial waves at energies from zero to 600-800 MeV and even higher.The parameters of the intermediate six-quark states,corresponding to the best fit of NN scattering data,are found to be consistent with the parameters of the known dibaryon resonances in those NN partial configurations,where their existence has been experimentally confirmed.Predictions for new dibaryon states are given as well.

关 键 词：nucleon-nucleon interaction dibaryon resonances short-range nuclear force 

分 类 号：O572.34[理学—粒子物理与原子核物理]