A systematic study is performed of the impact of the various resummed small-x contributions to the anomalous dimensions and coefficient functions on the evolution of unpolarized structure functions in deep-inelastic scattering. The proton structure functions F₂ᵖ and FLᵖ as well as the photon structure function F₂^γ are considered together with the corresponding parton densities. The general analytic solution of the evolution equations in Mellin-N space is derived, and different approximate solutions are compared. Potential effects of less singular small-x terms in the anomalous dimension and coefficient functions are discussed.
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Blümlein et al. (1998) studied this question.
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