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The Standard Model has been remarkably successful, yet fundamental questions concerning neutrino masses, dark matter, the baryon asymmetry of the Universe, and flavor mixing remain unanswered, motivating searches for physics beyond the Standard Model (BSM). High-intensity neutrino beams and large Liquid Argon Time Projection Chambers (LArTPCs) provide powerful opportunities to probe rare BSM phenomena through their excellent tracking, calorimetry, timing, and low-energy sensitivity. In this talk, I will briefly discuss neutrino oscillations and BSM searches in fixed-target neutrino experiments, highlighting recent results and novel experimental approaches using LArTPCs. I will also discuss how machine-learning techniques, including the SPINE framework, can exploit the detailed three-dimensional detector information to improve event reconstruction and enhance sensitivity to challenging neutrino and BSM signatures. |