Energy dependence of the zero-range normalization constant for the (p,t) reaction at incident energies of 34.9, 45.1, 54.7, and 65.0 MeV

Angular distributions of ${}_{}{}^{124}{}_{}{}^{}\mathrm{Sn}$($p$,$t$) reactions to low-lying states of ${}_{}{}^{122}{}_{}{}^{}\mathrm{Sn}$ were measured at $E_p=34.9, 45.1, 54.7, \mathrm{and} 65.0$ MeV and analyzed with zero-range distorted-wave Born approximation theory. It is found that the zero-range normalization constant $D_0^2$ is smoothly decreasing as a function of the incident proton energy in the several tens of MeV region of bombarding energy.