DUNE Sensitivity to Lorentz- and CPT-Symmetry Violations: Considering a Model with Two Free SME Parameters

The Deep Underground Neutrino Experiment is a next-generation long-baseline neutrino-oscillation experiment that will start operating in a few years and will conduct a wide range of searches for physics beyond the Standard Model. In this work we investigate the neutrino sector of the Standard-Model Extension considering two coefficients. We modify the General Long Baseline Experiment Simulator to compute the expected number of events and perform a minimum square analysis to determine the best-fit values and allowed ranges of the coefficients for several confidence levels. We compare our results with previous calculations made at the probability level.