Searching for Tensor Currents in the Weak Interaction Using $^{8}$Li $\beta$ Decay*

Precision beta-neutrino correlation measurements are often used as a broadband test for New Physics by limiting interaction contributions other than the vector-axial vector structure the Standard Model requires. We present the results of a pure Gamow-Teller $\beta-\nu$ correlation coefficient (a$_{\beta\nu}$) measurement via the beta decay of $^{8}$Li, which is sensitive to tensor currents. This data set was taken at Argonne National Lab with the Beta decay Paul Trap (BPT) and surpasses the statistics of our previous limit-defining $^{8}$Li experiment by an order of magnitude. With the analysis nearing its conclusion, we intend to push the low energy limit of a$_{\beta\nu}$’s relative uncertainty into the 0.1 percent range.