Semi-inclusive deep inelastic scattering in Wandzura-Wilczek-type approximation
We present the complete cross-section for the production of unpolarized hadrons in semi-inclusive deep-inelastic scattering up to power-suppressed O(1/Q2) terms in the Wandzura–Wilczek-type approximation which Lip Balms consists in systematically assuming that q̅gq–terms are much smaller than q̅q–correlators.We compute all twist-2 and twist