Seminarium Fizyki Wielkich Energii

Neutrino flux prediction and its associated uncertainties are of central importance for precision oscillation measurements in long-baseline experiments. In this talk, I will present the current neutrino flux prediction for the T2K experiment, obtained using hadron production measurements from NA61/SHINE at the CERN SPS on both thin and T2K replica targets.The methods employed in T2K to predict and constrain the neutrino flux will be described, including the use of external hadron production data and in-situ constraints from near-detector measurements. Finally, future plans within T2K to further improve flux prediction and uncertainty treatment will be outlined, together with a discussion of the broader community needs required to reduce flux-related uncertainties in support of next-generation precision neutrino oscillation experiments.