2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/46738The polarization dependence of the electromagnetic vertex for polarized proton is discussed. Such a dependence is shown to be a result of gluon polarization and gluon interactions with the constituents within proton. One more form factor is introduced to give such a dependence in the electromagnetic vertex for proton. Due the polarization dependence of the vertex, a nonzero single-spin asymmetry for unpolarized lepton scattering off transversely polarized proton is predicted.4 pages, in revtexHigh Energy Physics - Phenomenologytext