Speaker
Description
The Short-Baseline Neutrino program in Fermilab aims to resolve the nature of the low-energy excess events observed in LSND and MiniBooNE, and analyze with unprecedented precision neutrino interactions with argon, which requires reliable estimate of neutrino cross sections. We report updates of the NuWro generator that bring the state-of-the-art spectral functions to model the ground state properties of the argon nucleus, and improve the accuracy at low energies by accounting for effects of Coulomb potential and nuclear recoil. We discuss these developments in context of electron and neutrino interactions, by comparing NuWro predictions to experimental data from JLab Hall A and MicroBooNE. The MicroBooNE data are described with the Chi square per degree of freedom of 0.7, compared with 1.0 in the local Fermi gas model. Being obtained using the axial form factor parametrization from MINERvA, our results indicate a consistency between the CCQE measurements in MINERvA and MicroBooNE