Full-relativistic calculation of nuclear polarization in atomic and muonic levels

We study the nuclear polarizations in the atomic and muonic 208Pb using the complete set of nuclear excitations constructed by the relativistic mean-field model. We show that the nuclear-polarization energy shift is very sensitive to the contributions of the antinucleon and the effective mass of the nucleon. The persistent anomaly in the nuclear polarization of p-levels in the muonic 208Pb is analyzed in the light of the present results.