On QCD $Q^2$-evolution of Deuteron Structure Function $F_2^D(x_D,Q^2)$ for $x_D>1$

Abstract

The deep-inelastic deuteron structure function (SF) $F_2^D(x_D,Q^2)$ in the covariant approach in light-cone variables is considered. The $x_D$ and $Q^2$-dependences of SF are calculated. The QCD analysis of generated data both for non-cumulative $x_D<1$ and cumulative $x_D>1$ ranges was performed. It was shown that $Q^2$-evolution of SF is valid for ranges $0.275<x_D<0.85$ and $1.1<x_D<1.4$ for the same value of QCD scale parameter $Λ$. It was found the $x_D$-dependence of SF for the ranges is essentially different.