Nuclear structure corrections to deuterium hyperfine splitting

The low-energy theorem for the forward Compton scattering is generalized to the case of an arbitrary target spin. The generalization is used to calculate the corresponding contribution to the deuterium hyperfine structure. The nuclear-structure corrections are quite essential in this case due to the deuteron large size. Within their estimated accuracy, corrections of this type calculated here remove the discrepancy between the theoretical and experimental values of the deuterium hyperfine splitting.