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In the diquark-diantiquark composition, we study the masses of hidden charmtetraquark systems ($cq\bar{c}\bar{q}$, $cs\bar{c}\bar{s}$ and$cs\bar{c}\bar{q}$) using a linear confinement potential. In this study, wehave factorized the four body system into three subsequent two body systems. Toremove degeneracy in the S and P wave masses of mesons and tetraquark states,the spin-spin, spin orbit and tensor components of the confined one gluonexchange interactions are employed. In this attempt, we have been able toassign the $\psi(4230)$ as pure $cq\bar{c}\bar{q}$ tetraquark state.$\psi(4360)$ and $\psi(4390)$ as pure $cs\bar{c}\bar{q}$ tetraquark states.According to our analysis $\psi(4260)$ is an admixture of $^1P_1$ and $^5P_1$$cq\bar{c}\bar{q}$ tetraquark state. Additionally, we have been able to predictthe radiative decay width $\Gamma_{(\psi \rightarrow J/\psi \gamma)}$, leptonicdecay width $\Gamma_{e^+e^-}$ and hadronic decays of $1^{--}$ tetraquark stat

Masses of tetraquark states in the hidden charm sector above $D-D^*$ threshold