Speaker
Description
The electroweak interaction in the Standard Model is described by a pure vector–axial-vector structure, though other Lorentz-invariant terms could also contribute. Recent high-precision measurements of beta decays in 8Li and 8B have imposed stringent constraints on the potential contributions from Lorentz-invariant tensor currents in weak interactions. One of the significant sources of uncertainty in these low-energy measurements arises from higher-order nuclear beta decay terms, referred to as recoil-order terms, which become non-negligible in such high-precision experiments. In this talk, I will discuss how precise calculations of these higher-order corrections, using modern ab initio approaches, help distinguish between new physics and conventional nuclear effects. I will review some of the key results from the recent measurements of BSM tensor currents in the weak interaction and present the impact of theoretical calculations on reducing some of the leading uncertainties in these experiments.
