2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/47564We recalculate the pion electromagnetic form factor based on the perturbative QCD formalism that includes the Sudakov resummation. We take into account the evolution of the pion wave function in $b$, which represents the transverse extent of the pion. An infrared enhancement is observed when $1/b$ approaches $Λ_{QCD}$. We propose to freeze the evolution of the wave function at some scale above $Λ_{QCD}$, such that perturbative contributions are stablized. Our predictions are consistent with experimental data, and insensitive to the variation of relevant parameters.16 pages in Latex fileHigh Energy Physics - Phenomenologytext