2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/42292The claim in hep-ph/0301231 is refuted in a pedagogical way. It is explicitly shown that extremely relativistic neutrinos produced in pion decay are correctly described by the standard flavor neutrino states which are a coherent superposition of massive neutrino states.4 pagesHigh Energy Physics - Phenomenologytext