Twist-4 contributions to semi-inclusive $e^{+}{e}^{-}$-annihilation process

Wei-hua Yang, Kai-bao Chen, Zuo-tang Liang

We present the complete twist-4 results for the semi-inclusive annihilation process $e^{+}+e^{-}\to h+\bar{q}+X$ at the tree level of perturbative quantum chromodynamics. The calcula…