Status update on $\beta$-$\nu$ correlation measurement in $\beta$-decay of $^{8}$B

Precise measurements of the $\beta$-$\nu$ angular correlation coefficient ($a_{\beta \nu}$) in $\beta$-decay provide information on the presence of possible exotic couplings in the weak interaction. The $^{8}$Li-$^{8}$B radioactive mirror nuclei represent a particularly attractive system for these studies due to their small masses, large $Q$-value, and a triple-correlation between the charged lepton and the two $\alpha$-particles coming from the decay of the daughter $^{8}$Be that allows the extraction of $a_{\beta \nu}$ with higher sensitivity. Furthermore, it is possible to perform tests of the existence of second-class-currents in the Standard Model and the conserved-vector-current hypothesis by comparing correlation measurements in $^{8}$Li and $^{8}$B. Our collaboration has already performed detailed studies of the angular correlation with a trapped sample of cold $^{8}$Li ions in the Beta-Decay Paul trap (BPT) at Argonne National Laboratory with an uncertainty below 1\%. In this talk we present performance tests of our experimental setup with observed decays of $^{8}$B at the BPT as well as the current status on the effort to achieve a measurement with comparable sensitivity.