2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/42362We analyze color superconductivity of one massive flavor quark matter at moderate baryon density with a spin-zero color-sextet condensate. The most general Higgs-type ground-state expectation value of the order parameter implies complete breakdown of the SU(3)xU(1) symmetry. However, both the conventional fourth-order polynomial effective bosonic description, and the NJL-type fermionic description in the mean-field approximation favor an enhanced SO(3) symmetry of the ground state. We ascribe this finding to the failure of the mean-field approximation and propose that a more sophisticated technique is needed.8 pages, REVTeX4; v2:references added; v3: corrected, new four-quark interaction proposed, extensive discussion of the assumptions added; version to appear in Phys. Rev. DHigh Energy Physics - Phenomenologytext