RMS and charge radii in a potential model

The Dalgarno's method of perturbation is used to solve the Schrodinger's equation with the Cornell potential V(r) = -4 alpha(s)/3r + br + c. The short range and long range effect of the potential is incorporated in the same wave function by using two scales r(S) and r(L) as an integration limit. The results for bounds on r.m.s. radii of various heavy flavored mesons are reported. We have also showed the relation between r.m.s. and charge radius of mesons.