Strong decay of $ { \boldsymbol Y({\bf{4230}}){\bf\to}\boldsymbol J/\boldsymbol\psi \boldsymbol f_{\bf 0}({\bf{980}}) }$ in light cone sum rules

Abstract：

In this study, we assign the tetraquark state for the $ Y(4230) $ resonance and investigate the mass and decay constant of $ Y(4230) $ in the framework of SVZ sum rules through a different calculation technique. Then, we calculate the strong coupling $ g_{Y J/\psi f_0} $ by considering soft-meson approximation techniques within the framework of light cone sum rules, and we use the strong coupling $ g_{Y J/\psi f_0} $ to obtain the width of the decay $ Y(4230)\to $ $ J/\psi f_0(980) $ . Our prediction for the mass agrees with the experimental measurement, and that for the decay width of $ Y(4230)\to J/\psi f_0(980) $ is within the upper limit.