  Single pseudoscalar and vector mesons hard semi-inclusive photoproduction
$\gamma h \to MX" via higher twist (HT) mechanism is calculated using the QCD
running coupling constant method. The structure of infrared renormalon
singularities of the HT subprocess cross section and the Borel sum for it are
found. The problem of normalization of HT process cross section in terms of the
meson elm form factor is discussed.
