2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/43817We review a recent calculation of the two-loop next-to-leading logarithmic electroweak corrections to the form factors for massless chiral fermions coupling to an SU(2)xU(1) singlet gauge boson.4 pages. Talk given at the LCWS Paris, France, April 2004High Energy Physics - Phenomenologytext