Testing Supersymmetry with Neutron Decay

It has been recently realized that the neutrino correlation parameter $B$ in neutron decay is sensitive to Minimal Supersymmetric Models for the case of maximal mixing. $B$ is currently known to a precision of $3\times10^{-3}$, but a precision of better than $1\times10^{-3}$ is required to test these models. Improvements in experimental techniques developed for the ongoing UCNA experiment and the planned abBA experiment may allow an improved measurement of $B$ with a precision approaching $1\times10^{-4}$. An emerging concept for combining these techniques into an experiment to measure $B$ using ultracold neutrons and large-area silicon detectors will be discussed.