Exotic Strangeonium-like Hadronic Molecular States

Study of molecular state,as one of the exotic states,has been a hot research field in hadron physics since70’s.In the recent decade,the new hadron states named as XYZ particles are always studied as the molecular states,the research of the molecular states provides a good theoretical model for the new found particles.Due to chromodynamcis’s(QCD)analytical solution cannot deal with the problem about the strong interaction at low energy scale,the appli-cation of phenomenological models is imperative.The quark model in-cluding potential models which is one of the phenomenological models is always successful to describe the hadron states at low energy scale,so for the research of the new hadron states like XYZ,the quark model is very important.Whereas the work about the bottomonium-like states Zb(10610)and Zb(10650),we do some research about strangeonium-like state indicated as Zs2,which is near the threshold of K*K*system.The specific research program is that we use OBEP model to research K*K*system, and we’ll study whether there exist K*K*molecular states. After using the effec-tive Lagrangians which are consistence of SU(3)symmetric Lagrangian and SU(3)symmetric Wess-Zumino-Witten action(W-Z-W),we derive the po-tential combining OBEP model.After choosing the appropriate range of the cutoff A,and considering the mixing of S-wave and D-wave meanwhile, we use FESSDE program to calculate Schrodinger equation by Fortran, then we get the binding energy of the system in two situations of isospin symmetry broken and isospin symmetry unbroken,after that,we deduce whether K*K*system could be a molecular state or not. At the end of this article,we make a summary and outlook of our work.