Small-x Resummation for the Structure Functions $F_2^p$, $F_L^p$ and $F_2^γ$

Abstract

The numerical effects of the known all-order leading and next-to-leading logarithmic small-$x$ contributions to the anomalous dimensions and coefficient functions of the unpolarized singlet evolution are discussed for the structure functions $F_2^{ ep}(x,Q^2)$, $F_L^{ ep}(x,Q^2)$, and $F_2^{ eγ}(x,Q^2)$.