  In the paper two combinations of correlators are defined in order to
investigate the evolution of possible $\mathcal{P/CP}$ invariance violation in
strong interactions with initial energy for heavy ion collisions. These
combinations correspond to absolute and relative asymmetry of distribution of
electrically charge particles with respect to the reaction plane in heavy ion
collisions. Energy dependence of the parameters was derived from data of STAR
and ALICE experiments. Significant decreasing both absolute and relative
asymmetry is observed at energies $\sqrt{s_{NN}} < 20$ GeV. This feature agrees
qualitatively with other results of stage-I beam energy scan program in STAR
experiment. General behavior of dependence of absolute asymmetry on initial
energy agree reasonably with behavior of similar dependence of Chern -- Simons
diffusion rate calculated at different values of external Abelian magnetic
field. The observed behavior of understudying parameters vs energy can be
considered as indication on possible transition to predominance of hadronic
states over quark-gluon degrees of freedom in the mixed phase created in heavy
ion collisions at intermediate energies.
