Extracting the Strange Density from $x{F}_3$

We present a QCD analysis of the strange and charm contributions to the neutrino deep inelastic structure function $x{F}_3$. We show that next-to-leading order effects, which are relatively important for $F_2$, play a lesser role in the case of $x{F}_3$. The neutrino–antineutrino difference $xF_3^{\nu} - xF_3^{\bar \nu}$ provides a new determination of the strange density, which exhibits some advantages with respect to other traditional methods.