Microscopic calculation of the⁶He β-decay spectrum for new physics searches

In this contribution, we review a recent calculation of the⁶He β-decay spectrum in a microscopic framework that treats nucleons as interacting degrees of freedom. The calculation presented in this contribution includes one- and two-body electroweak currents describing the interaction of single nucleons and correlated pairs of nucleons with an external field, along with dynamics emerging from two- and three-nucleon correlations. With precision measurements of this quantity on-going, the comparably precise theoretical calculation reviewed in this contribution will make it possible to constrain or observe new physics in the near future should the experimental uncertainty goals be achieved.