D wave mass spectra and triple gluon decay of Charmonia

The hadron spectroscopy is interesting due to the number of states observed experimentally. The theoretical explanation of orbitally excited state of charmonium is challenging because many states may have possibilities of exotic states. As the mass of the charm quark is in the higher side we consider non-relativistic approach to determine the D wave mass spectra of charmonia. And further we have calculated the triple gluon decay of Decay of the D wave state at zero separation and at color compton radius. There are many methods to estimate the mass of a hadron, among which the phenomenological potential model is fairly reliable one, epically for heavier hadrons