2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/219690We show that the narrow-width approximation is insufficient for describing production of supersymmetric particles at the ILC. Especially when cuts are taken into account to extract signals using the narrow-width approximation can be wrong by an order of magnitude.Talk given at LCWS/ILC 2007 at DESY, HamburgHigh Energy Physics - Phenomenologytext