Decay Properties of Conventional and Hybrid Charmonium Mesons

In this paper, decay constants, lepton and photon decay widths for radially and orbitally excited conventional, as well as hybrid, charmonium mesons are calculated. The Schrödinger equation with non-relativistic potential model is used to obtain the spectrum and the radial wave function at the origin for the S and the P states conventional, as well as hybrid, charmonium mesons. The calculated spectrum agree with experimental findings within a 0.43-GeV standard deviation. The leptonic decay widths agree with other theoretical results, but are lower than the experimental measurements. The two-photon decay widths for ¹S₀ and ³P₂ states are in agreement with the experimental findings, but that for the ³P₀ states is not.