Quantum-chromodynamic predictions for high-pTbaryon production

Predictions for high-$p_T$ hadron production based on lowest-order quantum-chromodynamic (QCD) perturbation theory are reexamined in the light of new precise data relevant to the determination of the parton fragmentation functions. In particular, predictions for both $p$ and $\overline{p}$ production are given. It is found that for meson production in $\mathrm{pp}$ interactions the lowest-order QCD perturbation-theory predictions become dominant in the region $\sqrt{s}>50\mathrm{}$ GeV and $p_T>5\mathrm{}$ GeV/c. On the contrary, for baryon production the lowest-order predictions do not dominate until significantly larger $p_T$ values are reached.