Six-quark Structure In The Chiral Su(3) Quark Model With New Parameters

The study of Multi-quark States is an important research topic in strong interaction physics and an important field to study the non-perturbative effect of QCD.In the past decades,the chiral quark model has made great efforts in explaining the static properties of ground state baryons,nucleon-nucleon and nucleon-hyperon interactions.However,there is still an important problem in the related research at home and abroad:the treatment of wave functions of single baryon and double subsystem is inconsistent.This problem was not successfully solved until 2018.In this paper,we will use this self-consistent model to describe the energy of a single baryon and the interaction between two Nucleons to study the six-quark group which with nonsingular and strangeness-6.Based on the basic principles of group theory and symmetry in quantum mechanics,we construct a wave function with definite symmetry(seven states)for all six quark configurations consisting of u(d)quarks and all s quarks.The masses of the six quark state is calculated and the contribution of the interaction potential of each part to the masses is analyzedThe results show that under chiral SU(3)quark model,the threshold of nonsingular six-quark states are 300-600 MeV higher than that of corresponding two nonsingular baryons,and the threshold of singular six-quark states is more than 500 MeV higher than that of corresponding two nonsingular baryons.Compared with previous studies,the masses of the six-quark states obtained in our work are 140-260 MeV higher.This difference is mainly attributed to the confinement potential in the interaction potential,and the contribution of the one gluon exchange potential,kinetic energy and meson exchange to the poor masses is relatively small.Specifically,the repulsive force provided by the square confinement potential increases by about 200 MeV under the new parameters,because the repulsive force provided by the square confinement potential increases by about 100 MeV,while the gravitational force of the other part decreases by about 100 MeV;while the repulsive force provided by the linear confinement potential increases by about 400 MeV under the new parameters,its contribution mainly comes from the decrease of gravitational force by about 380 MeV,while the confinement potential decreases by about 380 MeV.The contribution of the difference is small,which shows that the repulsive force increases only a dozen MeV.On the other hand,the gravitational force of the one gluon exchange potential obtained by the new parameters increases about 50-130 MeV,mainly because the gravitational force provided by the color-coulomb interaction term increases by about 200 MeV,while the influence of the color-electric interaction term and the color-magnetic interaction term providing the repulsion force is relatively small,only increasing dozens of MeVOur results show that the masses of the six-quark state is sensitive to the parameters of the model,which requires that the parameters of the model have high reliability.It is necessary and important to study the six-quark states and other strong subsystems by using parameters that can self-consistently deal with the energy of a single baryon and the nucleon-nucleon interaction.In addition,we have initiated the research on the excited states of nucleons.At present,we have completed the construction of wave functions of the excited states of nucleons with definite symmetry according to the basic principles of group theory and quantum mechanics symmetry.In the following work,we will further calculate the masses of corresponding excited states by using early parameters and the new parameters respectively.