Precision corrections to superpartner masses

By Stephen Martin, Northern Illinois University and Fermilab

After the experimental verification of low-energy supersymmetry, one of the most important tasks will be to decipher the mechanism of supersymmetry breaking. This will require a precise matching of measured superpartner masses and other observables to the underlying Lagrangian parameters. I will present results for the two-loop corrections to the masses of the squarks, the gluino, and the top quark in supersymmetry. These corrections are much larger than future experimental uncertainties at the LHC and a future linear collider. I will discuss their impact on efforts to understand the supersymmetry breaking mechanism.