2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/97201A complete study of the one-loop induced decay Z -> neutrino antineutrino photon is presented within the framework of the Standard Model. The advantages of using a nonlinear gauge are stressed. We have found that the main contributions come from the electric dipole and the magnetic dipole transitions of the Z gauge boson and the neutrino, respectively. We obtain a branching ratio B=7.16E-10, which is about four orders of magnitude smaller than the bound recentely obtained by the L3 collaboration and thus it leaves open a window to search for new physics effects in single-photon decays of the Z boson.REVTEX,15 pp, 5 eps figures, Approved for publication in Physical Review DHigh Energy Physics - Phenomenologytext