  The unity of symmetry laws emphasizes, in the case of a mirror CP-even Dirac
Lagrangian, the regularity that the left- and right-handed axial-vector photons
refer to long- and short-lived bosons of true neutrality, respectively. Such a
difference in lifetimes expresses the unidenticality of masses, energies, and
momenta of axial-vector photons of the different components. They require the
generalization of the classical Klein-Gordon equation to the case of C-odd
types of particles with a nonzero spin. Together with a new Dirac equation for
truly neutral particles with the half-integral spin, the latter reflects the
availability in nature of the second type of the local axial-vector gauge
transformation responsible for origination in a Lagrangian of C-oddity of an
interaction Newton component, which gives an axial-vector mass to all the
interacting particles and fields. The quantum axial-vector mass, energy, and
momentum operators constitute herewith the CP-invariant Schr\"odinger equation,
confirming that each of them can individually influence on the matter field.
Thereby, findings define at the new level, namely, at the level of the
mass-charge structure of gauge invariance the mirror Euler-Lagrange equation
such that it has an axial-vector nature.
