Off-Shell and Interference Effects for SUSY Particle Production
arXiv:0709.0068
Abstract
We 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, Hamburg