Corrections to the energy levels of atoms of the type [(dtμ)e] and dμ due to the finite size of mesic molecules and nuclei

The shifts of the energy levels of atoms of the type [(dtμ)e] and dμ due to the non-pointlike nature of mesic molecules and nuclei are calculated. It is shown that the monopole correction to a level of an atom of the type [(dtμ)e] is to a considerable degree cancelled by the dipole correction in second-order perturbation theory in the operator for the interaction of the electron with the dipole moment of the mesic molecule in a weakly bound state J = v = 1