Speaker
Description
The rise of the precision measurements in neutrino oscillation experiments marks a new era in flavour physics. With many of the standard oscillation parameters measured to nearly percent-level accuracy, the data from neutrino oscillation experiments can be used to test the fundamental laws of particle physics. We investigate whether non-minimal Lorentz invariance violation can solve the tensions that are still present in the long-baseline experiments T2K and NO$\nu$A, where the atmospheric mixing angle $\theta_{23}$ has been measured inconclusively. We present the results from Lorentz-violating terms of dimensions $D =$ 4, 5 and 6 in a combined analysis of the experimental data. We find that parameters of dimension $D =$ 4 can potentially solve the discrepancy in $\theta_{23}$ measurements. In this talk, we will examine these fit results in detail and discuss how they stand against the constraints derived from previous experiments.