Speaker
Description
MicroBooNE, located at the Fermi National Accelerator Laboratory, is an 85-tonne liquid argon time-projection chamber designed to study neutrinos from the Booster Neutrino Beam (BNB) and the Neutrinos at the Main Injector (NuMI) beam. Operating between 2015 and 2021, it has performed some of the first measurements of electron-neutrino interactions on argon, including channels with visible final-state protons and no pions. Understanding electron-neutrino–argon interactions is essential for improving the accuracy of neutrino event generators, which are critical for modelling neutrino interactions and interpreting data from oscillation experiments. We present new measurements of electron-neutrino charged-current pionless cross sections on argon using the MicroBooNE detector. These measurements probe neutrino interactions in energy regimes directly relevant to the upcoming long-baseline oscillation experiment DUNE, where electron-neutrino appearance forms the primary signal. Differential cross sections are extracted in two separate analyses as functions of electron and proton kinematics for final states containing one electron, one or more visible protons, and no pions, using approximately 30% of the NuMI dataset and the full BNB dataset collected by MicroBooNE. The results are compared to a range of neutrino interaction generator predictions, and overall good agreement is observed, particularly in lepton kinematics.
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