A GiBUU-Based Monte Carlo Simulation for DUNE Physics Studies

We present a Monte Carlo simulation framework using the GiBUU model for neutrino event generation in liquid argon detectors. This implementation enables detailed studies of neutrino interactions for the DUNE experiment. We highlight the use of GiBUU-generated samples to explore key features of neutrino-argon interactions and examine the impact of model variations on experimental observables that can affect systematics and neutrino energy reconstruction. Comparisons with other generators, such as GENIE, are discussed to contextualize the strengths and differences of the GiBUU approach. The talk will illustrate how this simulation framework can support precision studies and deepen our understanding of neutrino interactions at DUNE for oscillation analysis and other measurements.