Precision Beta-Decay Studies of ⁸B: Reconstructing the Neutrino Energy Spectrum and Setting Tensor Current Limits

⁸B beta decay is the dominant source of the high-energy neutrinos generated in the Sun and observed on Earth. Furthermore, the large Q value of the decay and the fact that the daughter ⁸Be breaks up into two alpha particles makes it particularly sensitive to Beyond the Standard Model Physics. Preliminary results from a high-statistics experiment performed using the Beta-decay Paul Trap (BPT) surrounded by four double-sided silicon strip detectors at Argonne National Laboratory will be presented. Precise measurements of the alpha and beta particle energies were performed to set limits on the exotic tensor current contribution to the weak interaction. Additionally, the kinematics of the decay products were leveraged to reconstruct the undistorted ⁸B neutrino energy spectrum, an important input for the analysis of solar neutrino astrophysics experiments.