Power Corrections and Renormalons in Deep Inelastic Structure Functions

الأصل · EN

We study the power corrections (infrared renormalon contributions) to the coefficient functions for non-singlet deep inelastic structure functions due to gluon vacuum polarization insertions in one-loop graphs. Remarkably, for all the structure functions F₁, F₂, F₃ and g₁, there are only two such contributions, corresponding to 1/Q² and 1/Q⁴ power corrections. We compute their dependence on Bjorken x. The results could be used to model the dominant higher-twist contributions.