Speaker
Description
We report on global extractions of the $\rm^{12}C$, $\rm^{40}Ca$ and $\rm^{56}Fe$ longitudinal (${\cal R}_L$) and transverse (${\cal R}_T$) nuclear electromagnetic response functions from an analysis of all available electron scattering and photoprodution data on these nuclei. The response functions are extracted for energy transfer $\nu$, spanning the nuclear excitation, quasielastic (QE) scattering with one nucleon (1p1h) and two nucleon (2p2h) final states, and the resonance and inelastic continuum. We extract ${\cal R}_L$ and ${\cal R}_T$ as functions of $\nu$ for both fixed values of $Q^2$ and also for fixed values of 3-momentum transfer $\bf q$. Given the nuclear physics common to both electron and neutrino scattering from nuclei, extracted response functions from electron scattering spanning a large range of $Q^2$ and $\nu$ also provide a powerful tool for validation and tuning of neutrino Monte Carlo (MC) generators. In this paper we present comparisons of our previous measurements of $\rm^{12}C$ and new measurements of $\rm^{40}Ca$ and $\rm^{56}Fe$ nuclear response functions to the predictions of the ``Energy Dependent-Relativistic Mean Field'' (ED-RMF) calculation, and the predictions of an improved superscaling model (SuSAv2) over the entire kinematic range.
