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Recently, we developed a mean-field-type framework which treats thecorrelation induced by the tensor force. To exploit the tensor correlation weintroduce single-particle states with the parity and charge mixing. To make atotal wave function have a definite charge number and a good parity, the chargenumber and parity projections are performed. Taking a variation of theprojected wave function with respect to single-particle states aHartree-Fock-like equation, the charge- and parity-projected Hartree-Fockequation, is obtained. In the charge- and parity-projected Hartree-Fock method,we solve the equation selfconsistently. In this paper we extend the charge- andparity-projected Hartree-Fock method to include a three-body force, which isimportant to reproduce the saturation property of nuclei in mean-fieldframeworks. We apply the charge- and parity-projected Hartree-Fock method tosub-closed-shell oxygen isotopes (14O, 16O, 22O, 24O, and 28O) to study theeffect of the tenor correlation and its dependence on neutron numbers. Weobtain reasonable binding energies and matter radii for these nuclei. It isfound that relatively large energy gains come from the tensor force in theseisotopes and there is the blocking effect by occupied neutron orbits on thetensor correlation

Study of the effect of the tensor correlation in oxygen isotopes with the charge- and parity-projected Hartree-Fock method