2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/197433We consider the bosonic fields which describe a particle which may exist in states with spins one and zero with different masses. All the linearly independent solutions of the equation for a free particle are obtained in the form of the projection matrix-dyads (density-matrices). The interaction with anomalous magnetic dipole and quadruple electric moments of a particle is studied. The Hamiltonian form of the first order equation has been investigated.17 pages, LaTeX, typos corrected, accepted for publication in Int. J. Mod. Phys. AHigh Energy Physics - Theorytext