Next-to-leading order corrections to gauge-mediated gaugino masses Original Research Article

We compute the next-to-leading order corrections to the gaugino masses Mi in gauge-mediated models for generic values of the messenger masses M and discuss the predictions of unified messenger models. If M < 100 TeV there can be corrections of up to 10% to the leading order relations Mi ∝ αi. If the messengers are heavier there are only correctionas of a few %. We also study the messenger corrections to gauge coupling unification: as a result of cancellations dictated by supersymmetry, the predicted value of the strong coupling constant is typically only negligibly increased.