2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/132832A numerical estimative error of the magnitude of the vacuum polarization effect due to electron-positron by a factor of $10^3$ in [PRL97(2006)100403; 269901(E)] invalidates the study carried in this work in its present context.Withdrawn: see abstractHigh Energy Physics - Phenomenologytext