  Light meson ( $\pi,\ \sigma,\ a_0$) properties in the environment with chiral
imbalance are analyzed with the help of meson effective Lagrangian associated
with QCD. New spatial parity violating decays of scalar mesons arise as a
result of mixing of $\pi$ and $a_0$ mesons under influence of chiral charge
density. The pion electromagnetic form-factor gets an unusual parity-odd
contribution. Pion effective masses depend on their velocities and may vanish
in flight. The possible determination of chiral chemical potential in heavy ion
collisions based on above mentioned phenomena is discussed.
