One loop amplitudes in ABJM

A bstract For three dimensional superconformal field theories we compute oneloop scattering amplitudes for any number of external particles. We focus on a particular subsector of invariant superamplitudes for which the ordinary perturbative evaluation becomes very easy. The result we obtain is in general non-vanishing. For six external particles our findings are sufficient for determining the complete expression of the superamplitude at this order. We discuss the symmetries of the result and its anomalous variation under superconformal generators.