Left and Right in small-x neutrino DIS

Abstract

The color dipole analysis of nuclear effects in charge current DIS is presented. The emphasis is put on the pronounced effect of left-right asymmetry of shadowing in neutrino-nucleus DIS at small values of Bjorken $x$. Strikingly different scaling behavior of nuclear shadowing for the left-handed andright-handed $W^{+}$ is predicted. Large, about 25%, shadowing in the $Fe$ structure functions is predicted, which is important for a precise determination of the P-odd nucleon structure functions $x{F}_3^{\nu (\bar{\nu })}$ and $\Delta x{F}_3=x{F}_3^{\nu }-x{F}_3^{\bar{\nu }}$.

Comments: 7 pages, 1 figures, Talk given at Diffraction 06,International Workshop on Diffraction in High-Energy Physics,September 5-10, 2006 Adamantas, Milos island, Greece