Charged currents, color dipoles and $xF_3$ at small $x$

We develop the light-cone color dipole description of highly asymmetric diffractive interactions of left-handed and right-handed electroweak bosons. We identify the origin and estimate the strength of the left-right asymmetry effect in terms of the light-cone wave functions. We report an evaluation of the small-$x$ neutrino-nucleon deep inelastic scattering structure functions $xF_3$ and $2xF_1$ and present comparison with experimental data.