  Power series method (PSM) is revisited to find the masses of S, P, and D
states of conventional charmonium ($c\overline{c}$), bottomonium
($b\overline{b}$), and $B_c$ ($\overline{b}c$) mesons by assuming the solution
of N-dimensional radial Schrodinger equation in series form. An extension in
the potential model is proposed by fitting it with lattice data to study the
hybrid mesons. The proposed potential model is used to find the masses of
hybrid $c\overline{c}$, $b\overline{b}$, and $\overline{b}c$ mesons by applying
the power series method. Calculated results are compared with theoretical
findings and available experimental data. Our results can be helpful for the
investigation of newly experimentally discovered charmonium, bottomonium, and
$B_c$ states.
