Exotic states with QQ■ configuration

In the framework of a non-relativistic quark model, we have calculated the masses of the QQ■(Q = c, b, s and ■=■,■,■) tetraquark states. Using the linear and quadratic confinement potentials inside a Cornell-type potential along with all possible spin and color configurations, the Schr?dinger equation masses of these tetraquark states have been calculated.Based on our numerical analysis, linear confinement and quadratic confinement produce acceptable results. Models that use linear confinement estimate charmonium-like tetraquark mass close to experimental data, as well as bottomonium-like tetraquark mass below the threshold of their meson–meson channels.