The Effect Of Hidden Color Channel Of Strangeness-1 Dibaryon

Since the confirmation of the six-quark exotic state d*by recent COSY experiment,the related study on exotic states has gained extensive attention both experimentally and theoreti-cally.Undoubtedly it is an important place to test the interaction of quantum chromodynamics(QCD),since it is a totally new structure of hardon.The chiral SU(3)quark model is one of the most successful model with QCD-inspired to describe strong interaction.We have predicted the existence and binding energy of d*,which have confirmed by COSY experiment ten years later.Its rationality and effectiveness is obvious and has the predictive ability.Also we find that the effect of the hidden color channel(CC)is very important in forming nonstrange the d*exotic state.How to extend the study from nonstrange to strange systems,naturally,is of interest both experimentally and theoretically.It is a meaningful on hadron physics.In this work,we investigate the structure of strangeness-1 system ?*? in the chiral SU(3)quark model by using the Resonating group Method(RGM),the effect from hidden color channel is included.Firstly,the wave function of CC is constructed,and utilizing new method to evaluate the interaction matrix elements in spin-flavor-color space in single-channel and coupled-channel cases.Then we perform a dynamical calculation on ?*? system,and calculate the binding energy and root mean square radius.Also the effects from different chiral fields on this system are analyzed in detail.The binding energy in single-channel calculation is about 32 MeV and becomes 40 MeV in coupled-channel calculation.The results show that the hidden color channel has a relatively large influence on this ?*? state with strangeness-1.