Speaker
Description
Final-state interaction (FSI) is one of the most relevant nuclear effects involved in the neutrino-nucleus interactions, where the produced hadrons re-scatter with the nucleons within the nucleus. FSI accounts for a large source of uncertainties to neutrino detections, and hadron-nucleus scattering data can provide experimental constraints. Historically, experiments use hadron beam impinge on a thin target of material and measure its survival rate to extract the cross-section. However, in the case of liquid argon (LAr), which is used in many modern neutrino experiments, the large-size tank is not a thin-target in terms of hadrons. Therefore, the slicing method is proposed by the LArIAT collaboration, which hypothetically divide the LAr detector into several thin slices, and perform measurement in each slice. We further develop the method, deriving three energy-related variables in each event, and enable multi-dimensional unfolding of these variables, in order to fully consider the correlations among different slices. In this talk, the method as well as the procedures are applied to ProtoDUNE-SP Monte-Carlo (MC) sample. The consistency between the measured cross-section and the theoretical curve used for MC generation serves as a validation.
