Electrons for neutrinos: leveraging electron scattering data to constrain neutrino interactions

The ability of current and next generation accelerator based neutrino oscillation measurements to reach their desired sensitivity heavily relies on proper modelling of neutrino-nucleus interactions and the reconstruction of the incident neutrino energy from the measured final state particles. Using wide phase-space electron scattering data, collected using the CLAS spectrometer at the Thomas Jefferson National Accelerator Facility (JLab), we studied the reconstruction of the incoming lepton energy from the measured final state. Disagreements with current event generators, used in neutrino oscillation measurements, are observed which indicate possible underestimation of nuclear effects. The impact of these findings on bias in oscillation analyses will be discussed.